How to use appendDescriptionOf method of org.hamcrest.Description.NullDescription class

Best junit code snippet using org.hamcrest.Description.NullDescription.appendDescriptionOf

Source:ViewMatchers.java

...533      String mismatchDescriptionString = getMismatchDescriptionString(actual, matcher);534      description535          .appendText(message)536          .appendText("\nExpected: ")537          .appendDescriptionOf(matcher)538          .appendText("\n     Got: ")539          .appendText(mismatchDescriptionString);540      if (actual instanceof View) {541        // Get the human readable view description.542        description543            .appendText("\nView Details: ")544            .appendText(HumanReadables.describe((View) actual));545      }546      description.appendText("\n");547      throw new AssertionFailedError(description.toString());548    }549  }550  private static <T> String getMismatchDescriptionString(T actual, Matcher<T> matcher) {551    Description mismatchDescription = new StringDescription();552    matcher.describeMismatch(actual, mismatchDescription);553    String mismatchDescriptionString = mismatchDescription.toString().trim();554    return mismatchDescriptionString.isEmpty() ? actual.toString() : mismatchDescriptionString;555  }556  /**557   * Returns a matcher that matches a descendant of {@link Spinner} that is displaying the string of558   * the selected item associated with the given resource id.559   *560   * @param resourceId the resource id of the string resource the text view is expected to hold.561   */562  public static Matcher<View> withSpinnerText(final int resourceId) {563    return new WithSpinnerTextIdMatcher(resourceId);564  }565  /**566   * Returns a matcher that matches {@link Spinner Spinner's} based on {@code toString} value of the567   * selected item.568   *569   * @param stringMatcher <a570   *     href="http://hamcrest.org/JavaHamcrest/javadoc/1.3/org/hamcrest/Matcher.html"><code>Matcher571   *     </code></a> of {@link String} with text to match.572   */573  public static Matcher<View> withSpinnerText(final Matcher<String> stringMatcher) {574    return new WithSpinnerTextMatcher(checkNotNull(stringMatcher));575  }576  /**577   * Returns a matcher that matches {@link Spinner} based on it's selected item's {@code toString}578   * value.579   *580   * <p>Note: Sugar for {@code withSpinnerText(is("string"))}.581   */582  public static Matcher<View> withSpinnerText(String text) {583    return withSpinnerText(is(text));584  }585  /** Returns a matcher that matches {@link WebView} if they are evaluating {@code JavaScript}. */586  public static Matcher<View> isJavascriptEnabled() {587    return new IsJavascriptEnabledMatcher();588  }589  /**590   * Returns a matcher that matches {@link EditText} based on edit text error string value.591   *592   * <p><b>Note:</b> View's error property can be <code>null</code>, to match against it use <code>593   * hasErrorText(nullValue(String.class)</code>594   */595  public static Matcher<View> hasErrorText(final Matcher<String> stringMatcher) {596    return new HasErrorTextMatcher(checkNotNull(stringMatcher));597  }598  /**599   * Returns a matcher that matches {@link EditText} based on edit text error string value.600   *601   * <p>Note: Sugar for {@code hasErrorText(is("string"))}.602   */603  public static Matcher<View> hasErrorText(final String expectedError) {604    return hasErrorText(is(expectedError));605  }606  /** Returns a matcher that matches {@link android.text.InputType}. */607  public static Matcher<View> withInputType(final int inputType) {608    return new WithInputTypeMatcher(inputType);609  }610  /** Returns a matcher that matches the child index inside the {@link ViewParent}. */611  public static Matcher<View> withParentIndex(final int index) {612    checkArgument(index >= 0, "Index %s must be >= 0", index);613    return new WithParentIndexMatcher(index);614  }615  static final class WithIdMatcher extends TypeSafeDiagnosingMatcher<View> {616    @VisibleForTesting617    @RemoteMsgField(order = 0)618    Matcher<Integer> viewIdMatcher;619    private Resources resources;620    @RemoteMsgConstructor621    private WithIdMatcher(Matcher<Integer> integerMatcher) {622      this.viewIdMatcher = integerMatcher;623    }624    @SuppressWarnings("JdkObsolete") // java.util.regex.Matcher requires the use of StringBuffer625    @Override626    public void describeTo(Description description) {627      String id = getViewIdString(viewIdMatcher.toString());628      description.appendText("view.getId() ").appendText(id);629    }630    @Override631    protected boolean matchesSafely(View view, Description mismatchDescription) {632      resources = view.getResources();633      boolean matches = viewIdMatcher.matches(view.getId());634      // Only log if no match is found and if the description isn't a NullDescription. This avoids635      // a call to query the resources which may cause some issues as it logs several errors.636      if (!matches && !(mismatchDescription instanceof NullDescription)) {637        mismatchDescription638            .appendText("view.getId() was ")639            .appendText(getViewIdString("<" + view.getId() + ">"));640      }641      return matches;642    }643    private String getViewIdString(String idDescription) {644      java.util.regex.Matcher matcher = RESOURCE_ID_PATTERN.matcher(idDescription);645      StringBuffer buffer = new StringBuffer(idDescription.length());646      while (matcher.find()) {647        if (resources != null) {648          String idString = matcher.group();649          int id = Integer.parseInt(idString);650          String resourceName = safeGetResourceName(resources, id);651          if (resourceName != null) {652            matcher.appendReplacement(buffer, idString + "/" + resourceName);653          } else {654            // No big deal, will just use the int value.655            matcher.appendReplacement(656                buffer, String.format(Locale.ROOT, "%s (resource name not found)", idString));657          }658        }659      }660      matcher.appendTail(buffer);661      return buffer.toString();662    }663  }664  static final class WithTextMatcher extends BoundedDiagnosingMatcher<View, TextView> {665    @RemoteMsgField(order = 0)666    private final Matcher<String> stringMatcher;667    @RemoteMsgConstructor668    private WithTextMatcher(Matcher<String> stringMatcher) {669      super(TextView.class);670      this.stringMatcher = stringMatcher;671    }672    @Override673    protected void describeMoreTo(Description description) {674      description.appendText("view.getText() with or without transformation to match: ");675      stringMatcher.describeTo(description);676    }677    @Override678    protected boolean matchesSafely(TextView textView, Description mismatchDescription) {679      String text = textView.getText().toString();680      // The reason we try to match both original text and the transformed one is because some UI681      // elements may inherit a default theme which behave differently for SDK below 19 and above.682      // So it is implemented in a backwards compatible way.683      if (stringMatcher.matches(text)) {684        return true;685      }686      mismatchDescription.appendText("view.getText() was ").appendValue(text);687      if (textView.getTransformationMethod() != null) {688        CharSequence transformedText =689            textView.getTransformationMethod().getTransformation(text, textView);690        mismatchDescription.appendText(" transformed text was ").appendValue(transformedText);691        if (transformedText != null) {692          return stringMatcher.matches(transformedText.toString());693        }694      }695      return false;696    }697  }698  static final class WithResourceNameMatcher extends TypeSafeDiagnosingMatcher<View> {699    @RemoteMsgField(order = 0)700    private final Matcher<String> stringMatcher;701    @RemoteMsgConstructor702    private WithResourceNameMatcher(Matcher<String> stringMatcher) {703      this.stringMatcher = stringMatcher;704    }705    @Override706    public void describeTo(Description description) {707      description708          .appendText("view.getId()'s resource name should match ")709          .appendDescriptionOf(stringMatcher);710    }711    @Override712    protected boolean matchesSafely(View view, Description mismatchDescription) {713      final int id = view.getId();714      if (id == View.NO_ID) {715        mismatchDescription.appendText("view.getId() was View.NO_ID");716        return false;717      }718      if (view.getResources() == null) {719        mismatchDescription.appendText("view.getResources() was null, can't resolve resource name");720        return false;721      }722      if (isViewIdGenerated(id)) {723        mismatchDescription.appendText(724            "view.getId() was generated by a call to View.generateViewId()");725        return false;726      }727      String resourceName = safeGetResourceEntryName(view.getResources(), view.getId());728      if (resourceName == null) {729        mismatchDescription730            .appendText("view.getId() was ")731            .appendValue(id)732            .appendText(" which fails to resolve resource name");733        return false;734      }735      if (!stringMatcher.matches(resourceName)) {736        mismatchDescription737            .appendText("view.getId() was <")738            .appendText(resourceName)739            .appendText(">");740        return false;741      }742      return true;743    }744  }745  static final class WithTagKeyMatcher extends TypeSafeDiagnosingMatcher<View> {746    @RemoteMsgField(order = 0)747    private final int key;748    @RemoteMsgField(order = 1)749    private final Matcher<?> objectMatcher;750    @RemoteMsgConstructor751    private WithTagKeyMatcher(int key, Matcher<?> objectMatcher) {752      this.key = key;753      this.objectMatcher = objectMatcher;754    }755    @Override756    public void describeTo(Description description) {757      description.appendText("view.getTag(" + key + ") ").appendDescriptionOf(objectMatcher);758    }759    @Override760    protected boolean matchesSafely(View view, Description mismatchDescription) {761      final Object tag = view.getTag(key);762      if (!objectMatcher.matches(tag)) {763        mismatchDescription.appendText("view.getTag(" + key + ") ");764        objectMatcher.describeMismatch(tag, mismatchDescription);765        return false;766      }767      return true;768    }769  }770  static final class IsAssignableFromMatcher extends TypeSafeDiagnosingMatcher<View> {771    @RemoteMsgField(order = 0)772    private final Class<?> clazz;773    @RemoteMsgConstructor774    private IsAssignableFromMatcher(@NonNull Class<?> clazz) {775      this.clazz = checkNotNull(clazz);776    }777    @Override778    public void describeTo(Description description) {779      description.appendText("is assignable from class ").appendValue(clazz);780    }781    @Override782    protected boolean matchesSafely(View view, Description mismatchDescription) {783      if (!clazz.isAssignableFrom(view.getClass())) {784        mismatchDescription.appendText("view.getClass() was ").appendValue(view.getClass());785        return false;786      }787      return true;788    }789  }790  static final class WithClassNameMatcher extends TypeSafeDiagnosingMatcher<View> {791    @VisibleForTesting792    @RemoteMsgField(order = 0)793    final Matcher<String> classNameMatcher;794    @RemoteMsgConstructor795    private WithClassNameMatcher(Matcher<String> classNameMatcher) {796      this.classNameMatcher = classNameMatcher;797    }798    @Override799    public void describeTo(Description description) {800      description801          .appendText("view.getClass().getName() matches: ")802          .appendDescriptionOf(classNameMatcher);803    }804    @Override805    protected boolean matchesSafely(View view, Description mismatchDescription) {806      final String className = view.getClass().getName();807      if (!classNameMatcher.matches(className)) {808        mismatchDescription.appendText("view.getClass().getName() ");809        classNameMatcher.describeMismatch(className, mismatchDescription);810        return false;811      }812      return true;813    }814  }815  static final class IsDisplayedMatcher extends TypeSafeDiagnosingMatcher<View> {816    private final Matcher<View> visibilityMatcher = withEffectiveVisibility(Visibility.VISIBLE);817    @RemoteMsgConstructor818    private IsDisplayedMatcher() {}819    @Override820    public void describeTo(Description description) {821      description822          .appendText("(")823          .appendDescriptionOf(visibilityMatcher)824          .appendText(" and view.getGlobalVisibleRect() to return non-empty rectangle)");825    }826    @Override827    protected boolean matchesSafely(View view, Description mismatchDescription) {828      if (!visibilityMatcher.matches(view)) {829        visibilityMatcher.describeMismatch(view, mismatchDescription);830        return false;831      }832      if (!view.getGlobalVisibleRect(new Rect())) {833        mismatchDescription.appendText("view.getGlobalVisibleRect() returned empty rectangle");834        return false;835      }836      return true;837    }838  }839  static final class IsDisplayingAtLeastMatcher extends TypeSafeDiagnosingMatcher<View> {840    @VisibleForTesting841    @RemoteMsgField(order = 0)842    final int areaPercentage;843    private final Matcher<View> visibilityMatchers = withEffectiveVisibility(Visibility.VISIBLE);844    @RemoteMsgConstructor845    private IsDisplayingAtLeastMatcher(int areaPercentage) {846      this.areaPercentage = areaPercentage;847    }848    @Override849    public void describeTo(Description description) {850      description851          .appendText("(")852          .appendDescriptionOf(visibilityMatchers)853          .appendText(" and view.getGlobalVisibleRect() covers at least ")854          .appendValue(areaPercentage)855          .appendText(" percent of the view's area)");856    }857    @Override858    protected boolean matchesSafely(View view, Description mismatchDescription) {859      if (!visibilityMatchers.matches(view)) {860        visibilityMatchers.describeMismatch(view, mismatchDescription);861        return false;862      }863      Rect visibleParts = new Rect();864      boolean visibleAtAll = view.getGlobalVisibleRect(visibleParts);865      if (!visibleAtAll) {866        mismatchDescription867            .appendText("view was ")868            .appendValue(0)869            .appendText(" percent visible to the user");870        return false;871      }872      Rect screen = getScreenWithoutStatusBarActionBar(view);873      float viewHeight = (view.getHeight() > screen.height()) ? screen.height() : view.getHeight();874      float viewWidth = (view.getWidth() > screen.width()) ? screen.width() : view.getWidth();875      if (Build.VERSION.SDK_INT >= 11) {876        // For API level 11 and above, factor in the View's scaleX and scaleY properties.877        viewHeight = Math.min(view.getHeight() * Math.abs(view.getScaleY()), screen.height());878        viewWidth = Math.min(view.getWidth() * Math.abs(view.getScaleX()), screen.width());879      }880      double maxArea = viewHeight * viewWidth;881      double visibleArea = visibleParts.height() * visibleParts.width();882      int displayedPercentage = (int) ((visibleArea / maxArea) * 100);883      if (displayedPercentage < areaPercentage) {884        mismatchDescription885            .appendText("view was ")886            .appendValue(displayedPercentage)887            .appendText(" percent visible to the user");888        return false;889      }890      return true;891    }892    private Rect getScreenWithoutStatusBarActionBar(View view) {893      DisplayMetrics m = new DisplayMetrics();894      ((WindowManager) view.getContext().getSystemService(Context.WINDOW_SERVICE))895          .getDefaultDisplay()896          .getMetrics(m);897      // Get status bar height898      int resourceId =899          view.getContext().getResources().getIdentifier("status_bar_height", "dimen", "android");900      int statusBarHeight =901          (resourceId > 0) ? view.getContext().getResources().getDimensionPixelSize(resourceId) : 0;902      // Get action bar height903      TypedValue tv = new TypedValue();904      int actionBarHeight =905          view.getContext().getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)906              ? TypedValue.complexToDimensionPixelSize(907                  tv.data, view.getContext().getResources().getDisplayMetrics())908              : 0;909      return new Rect(0, 0, m.widthPixels, m.heightPixels - (statusBarHeight + actionBarHeight));910    }911  }912  static final class IsEnabledMatcher extends TypeSafeDiagnosingMatcher<View> {913    @RemoteMsgField(order = 0)914    private final boolean isEnabled;915    @RemoteMsgConstructor916    private IsEnabledMatcher(boolean isEnabled) {917      this.isEnabled = isEnabled;918    }919    @Override920    public void describeTo(Description description) {921      description.appendText("view.isEnabled() is ").appendValue(isEnabled);922    }923    @Override924    protected boolean matchesSafely(View view, Description mismatchDescription) {925      final boolean isEnabled = view.isEnabled();926      if (isEnabled != this.isEnabled) {927        mismatchDescription.appendText("view.isEnabled() was ").appendValue(isEnabled);928        return false;929      }930      return true;931    }932  }933  static final class IsFocusableMatcher extends TypeSafeDiagnosingMatcher<View> {934    @RemoteMsgField(order = 0)935    private final boolean isFocusable;936    @RemoteMsgConstructor937    private IsFocusableMatcher(boolean isFocusable) {938      this.isFocusable = isFocusable;939    }940    @Override941    public void describeTo(Description description) {942      description.appendText("view.isFocusable() is ").appendValue(isFocusable);943    }944    @Override945    protected boolean matchesSafely(View view, Description mismatchDescription) {946      final boolean isFocusable = view.isFocusable();947      if (isFocusable != this.isFocusable) {948        mismatchDescription.appendText("view.isFocusable() was ").appendValue(isFocusable);949        return false;950      }951      return true;952    }953  }954  static final class IsFocusedMatcher extends TypeSafeDiagnosingMatcher<View> {955    @RemoteMsgField(order = 0)956    private final boolean isFocused;957    @RemoteMsgConstructor958    private IsFocusedMatcher(boolean isFocused) {959      this.isFocused = isFocused;960    }961    @Override962    public void describeTo(Description description) {963      description.appendText("view.isFocused() is ").appendValue(isFocused);964    }965    @Override966    protected boolean matchesSafely(View view, Description mismatchDescription) {967      final boolean isFocused = view.isFocused();968      if (isFocused != this.isFocused) {969        mismatchDescription.appendText("view.isFocused() was ").appendValue(isFocused);970        return false;971      }972      return true;973    }974  }975  static final class HasFocusMatcher extends TypeSafeDiagnosingMatcher<View> {976    @RemoteMsgField(order = 0)977    private final boolean hasFocus;978    @RemoteMsgConstructor979    private HasFocusMatcher(boolean hasFocus) {980      this.hasFocus = hasFocus;981    }982    @Override983    public void describeTo(Description description) {984      description.appendText("view.hasFocus() is ").appendValue(hasFocus);985    }986    @Override987    protected boolean matchesSafely(View view, Description mismatchDescription) {988      final boolean hasFocus = view.hasFocus();989      if (hasFocus != this.hasFocus) {990        mismatchDescription.appendText("view.hasFocus() is ").appendValue(hasFocus);991        return false;992      }993      return true;994    }995  }996  static final class IsSelectedMatcher extends TypeSafeDiagnosingMatcher<View> {997    @RemoteMsgField(order = 0)998    private final boolean isSelected;999    @RemoteMsgConstructor1000    private IsSelectedMatcher(boolean isSelected) {1001      this.isSelected = isSelected;1002    }1003    @Override1004    public void describeTo(Description description) {1005      description.appendText("view.isSelected() is ").appendValue(isSelected);1006    }1007    @Override1008    protected boolean matchesSafely(View view, Description mismatchDescription) {1009      final boolean isSelected = view.isSelected();1010      if (isSelected != this.isSelected) {1011        mismatchDescription.appendText("view.isSelected() was ").appendValue(isSelected);1012        return false;1013      }1014      return true;1015    }1016  }1017  static final class HasSiblingMatcher extends TypeSafeDiagnosingMatcher<View> {1018    @RemoteMsgField(order = 0)1019    private final Matcher<View> siblingMatcher;1020    private final Matcher<ViewGroup> parentMatcher = Matchers.isA(ViewGroup.class);1021    @RemoteMsgConstructor1022    private HasSiblingMatcher(final Matcher<View> siblingMatcher) {1023      this.siblingMatcher = siblingMatcher;1024    }1025    @Override1026    public void describeTo(Description description) {1027      description1028          .appendText("(view.getParent() ")1029          .appendDescriptionOf(parentMatcher)1030          .appendText(" and has a sibling matching ")1031          .appendDescriptionOf(siblingMatcher)1032          .appendText(")");1033    }1034    @Override1035    protected boolean matchesSafely(View view, Description mismatchDescription) {1036      ViewParent parent = view.getParent();1037      if (!parentMatcher.matches(parent)) {1038        mismatchDescription.appendText("view.getParent() ");1039        parentMatcher.describeMismatch(parent, mismatchDescription);1040        return false;1041      }1042      ViewGroup parentGroup = (ViewGroup) parent;1043      if (parentGroup.getChildCount() == 1) {1044        // No siblings can exist for view.1045        mismatchDescription.appendText("no siblings found");1046        return false;1047      }1048      for (int i = 0; i < parentGroup.getChildCount(); i++) {1049        View child = parentGroup.getChildAt(i);1050        if (view != child && siblingMatcher.matches(child)) {1051          return true;1052        }1053      }1054      mismatchDescription1055          .appendText("none of the ")1056          .appendValue(parentGroup.getChildCount() - 1)1057          .appendText(" siblings match");1058      return false;1059    }1060  }1061  static final class WithContentDescriptionFromIdMatcher extends TypeSafeDiagnosingMatcher<View> {1062    @RemoteMsgField(order = 0)1063    private final int resourceId;1064    private String resourceName = null;1065    private String expectedText = null;1066    @RemoteMsgConstructor1067    private WithContentDescriptionFromIdMatcher(final int resourceId) {1068      this.resourceId = resourceId;1069    }1070    @Override1071    public void describeTo(Description description) {1072      description1073          .appendText("view.getContentDescription() to match resource id ")1074          .appendValue(resourceId);1075      if (resourceName != null) {1076        description.appendText("[").appendText(resourceName).appendText("]");1077      }1078      if (expectedText != null) {1079        description.appendText(" with value ").appendValue(expectedText);1080      }1081    }1082    @Override1083    protected boolean matchesSafely(View view, Description mismatchDescription) {1084      if (null == this.expectedText) {1085        try {1086          expectedText = view.getResources().getString(resourceId);1087        } catch (Resources.NotFoundException ignored) {1088          // view could be from a context unaware of the resource id.1089        }1090        resourceName = safeGetResourceEntryName(view.getResources(), resourceId);1091      }1092      if (expectedText == null) {1093        mismatchDescription.appendText("Failed to resolve resource id ").appendValue(resourceId);1094        return false;1095      }1096      final CharSequence contentDescription = view.getContentDescription();1097      if (contentDescription == null || !expectedText.contentEquals(contentDescription)) {1098        mismatchDescription1099            .appendText("view.getContentDescription() was ")1100            .appendValue(contentDescription);1101        return false;1102      }1103      return true;1104    }1105  }1106  @VisibleForTesting1107  static final class WithContentDescriptionMatcher extends TypeSafeDiagnosingMatcher<View> {1108    @RemoteMsgField(order = 0)1109    private final Matcher<? extends CharSequence> charSequenceMatcher;1110    @RemoteMsgConstructor1111    private WithContentDescriptionMatcher(Matcher<? extends CharSequence> charSequenceMatcher) {1112      this.charSequenceMatcher = charSequenceMatcher;1113    }1114    @Override1115    public void describeTo(Description description) {1116      description1117          .appendText("view.getContentDescription() ")1118          .appendDescriptionOf(charSequenceMatcher);1119    }1120    @Override1121    protected boolean matchesSafely(View view, Description mismatchDescription) {1122      final CharSequence contentDescription = view.getContentDescription();1123      if (!charSequenceMatcher.matches(contentDescription)) {1124        mismatchDescription.appendText("view.getContentDescription() ");1125        charSequenceMatcher.describeMismatch(contentDescription, mismatchDescription);1126        return false;1127      }1128      return true;1129    }1130  }1131  @VisibleForTesting1132  static final class WithContentDescriptionTextMatcher extends TypeSafeDiagnosingMatcher<View> {1133    @RemoteMsgField(order = 0)1134    private final Matcher<String> textMatcher;1135    @RemoteMsgConstructor1136    private WithContentDescriptionTextMatcher(Matcher<String> textMatcher) {1137      this.textMatcher = textMatcher;1138    }1139    @Override1140    public void describeTo(Description description) {1141      description.appendText("view.getContentDescription() ").appendDescriptionOf(textMatcher);1142    }1143    @Override1144    protected boolean matchesSafely(View view, Description mismatchDescription) {1145      String descriptionText =1146          (view.getContentDescription() != null) ? view.getContentDescription().toString() : null;1147      if (!textMatcher.matches(descriptionText)) {1148        mismatchDescription.appendText("view.getContentDescription() ");1149        textMatcher.describeMismatch(descriptionText, mismatchDescription);1150        return false;1151      }1152      return true;1153    }1154  }1155  @VisibleForTesting1156  static final class WithTagValueMatcher extends TypeSafeDiagnosingMatcher<View> {1157    @RemoteMsgField(order = 0)1158    private final Matcher<Object> tagValueMatcher;1159    @RemoteMsgConstructor1160    private WithTagValueMatcher(Matcher<Object> tagValueMatcher) {1161      this.tagValueMatcher = tagValueMatcher;1162    }1163    @Override1164    public void describeTo(Description description) {1165      description.appendText("view.getTag() ").appendDescriptionOf(tagValueMatcher);1166    }1167    @Override1168    protected boolean matchesSafely(View view, Description mismatchDescription) {1169      final Object tag = view.getTag();1170      if (!tagValueMatcher.matches(tag)) {1171        mismatchDescription.appendText("view.getTag() ");1172        tagValueMatcher.describeMismatch(tag, mismatchDescription);1173        return false;1174      }1175      return true;1176    }1177  }1178  @VisibleForTesting1179  static final class WithCharSequenceMatcher extends BoundedDiagnosingMatcher<View, TextView> {1180    @RemoteMsgField(order = 0)1181    private final int resourceId;1182    @RemoteMsgField(order = 1)1183    private final TextViewMethod method;1184    @Nullable private String resourceName;1185    @Nullable private String expectedText;1186    private enum TextViewMethod {1187      GET_TEXT,1188      GET_HINT1189    }1190    @RemoteMsgConstructor1191    private WithCharSequenceMatcher(int resourceId, TextViewMethod method) {1192      super(TextView.class);1193      this.resourceId = resourceId;1194      this.method = method;1195    }1196    @Override1197    protected void describeMoreTo(Description description) {1198      switch (method) {1199        case GET_TEXT:1200          description.appendText("view.getText()");1201          break;1202        case GET_HINT:1203          description.appendText("view.getHint()");1204          break;1205      }1206      description.appendText(" equals string from resource id: ").appendValue(resourceId);1207      if (null != resourceName) {1208        description.appendText(" [").appendText(resourceName).appendText("]");1209      }1210      if (null != expectedText) {1211        description.appendText(" value: ").appendText(expectedText);1212      }1213    }1214    @Override1215    protected boolean matchesSafely(TextView textView, Description mismatchDescription) {1216      if (null == expectedText) {1217        try {1218          expectedText = textView.getResources().getString(resourceId);1219        } catch (Resources.NotFoundException ignored) {1220          /* view could be from a context unaware of the resource id. */1221        }1222        resourceName = safeGetResourceEntryName(textView.getResources(), resourceId);1223      }1224      CharSequence actualText;1225      switch (method) {1226        case GET_TEXT:1227          actualText = textView.getText();1228          mismatchDescription.appendText("view.getText() was ");1229          break;1230        case GET_HINT:1231          actualText = textView.getHint();1232          mismatchDescription.appendText("view.getHint() was ");1233          break;1234        default:1235          throw new IllegalStateException("Unexpected TextView method: " + method);1236      }1237      mismatchDescription.appendValue(actualText);1238      // FYI: actualText may not be string ... its just a char sequence convert to string.1239      return null != expectedText && null != actualText && expectedText.contentEquals(actualText);1240    }1241  }1242  @VisibleForTesting1243  static final class WithHintMatcher extends BoundedDiagnosingMatcher<View, TextView> {1244    @RemoteMsgField(order = 0)1245    private final Matcher<String> stringMatcher;1246    @RemoteMsgConstructor1247    private WithHintMatcher(Matcher<String> stringMatcher) {1248      super(TextView.class);1249      this.stringMatcher = stringMatcher;1250    }1251    @Override1252    protected void describeMoreTo(Description description) {1253      description.appendText("view.getHint() matching: ");1254      stringMatcher.describeTo(description);1255    }1256    @Override1257    protected boolean matchesSafely(TextView textView, Description mismatchDescription) {1258      CharSequence hint = textView.getHint();1259      mismatchDescription.appendText("view.getHint() was ").appendValue(hint);1260      return stringMatcher.matches(hint);1261    }1262  }1263  @VisibleForTesting1264  static final class WithCheckBoxStateMatcher<E extends View & Checkable>1265      extends BoundedDiagnosingMatcher<View, E> {1266    @RemoteMsgField(order = 0)1267    private final Matcher<Boolean> checkStateMatcher;1268    @RemoteMsgConstructor1269    private WithCheckBoxStateMatcher(Matcher<Boolean> checkStateMatcher) {1270      super(View.class, Checkable.class);1271      this.checkStateMatcher = checkStateMatcher;1272    }1273    @Override1274    protected void describeMoreTo(Description description) {1275      description.appendText("view.isChecked() matching: ").appendDescriptionOf(checkStateMatcher);1276    }1277    @Override1278    protected boolean matchesSafely(E checkable, Description mismatchDescription) {1279      boolean isChecked = checkable.isChecked();1280      mismatchDescription.appendText("view.isChecked() was ").appendValue(isChecked);1281      return checkStateMatcher.matches(isChecked);1282    }1283  }1284  @VisibleForTesting1285  static final class HasContentDescriptionMatcher extends TypeSafeDiagnosingMatcher<View> {1286    @RemoteMsgConstructor1287    private HasContentDescriptionMatcher() {}1288    @Override1289    public void describeTo(Description description) {1290      description.appendText("view.getContentDescription() is not null");1291    }1292    @Override1293    protected boolean matchesSafely(View view, Description mismatchDescription) {1294      if (view.getContentDescription() == null) {1295        mismatchDescription.appendText("view.getContentDescription() was null");1296        return false;1297      }1298      return true;1299    }1300  }1301  @VisibleForTesting1302  static final class HasDescendantMatcher extends TypeSafeDiagnosingMatcher<View> {1303    @RemoteMsgField(order = 0)1304    private final Matcher<View> descendantMatcher;1305    private final Matcher<ViewGroup> isViewGroupMatcher = Matchers.isA(ViewGroup.class);1306    @RemoteMsgConstructor1307    private HasDescendantMatcher(Matcher<View> descendantMatcher) {1308      this.descendantMatcher = descendantMatcher;1309    }1310    @Override1311    public void describeTo(Description description) {1312      description1313          .appendText("(view ")1314          .appendDescriptionOf(isViewGroupMatcher)1315          .appendText(" and has descendant matching ")1316          .appendDescriptionOf(descendantMatcher)1317          .appendText(")");1318    }1319    @Override1320    protected boolean matchesSafely(final View view, Description mismatchDescription) {1321      if (!isViewGroupMatcher.matches(view)) {1322        mismatchDescription.appendText("view ");1323        isViewGroupMatcher.describeMismatch(view, mismatchDescription);1324        return false;1325      }1326      final Predicate<View> matcherPredicate =1327          input -> input != view && descendantMatcher.matches(input);1328      Iterator<View> matchedViewIterator =1329          Iterables.filter(breadthFirstViewTraversal(view), matcherPredicate).iterator();1330      if (!matchedViewIterator.hasNext()) {1331        mismatchDescription1332            .appendText("no descendant matching ")1333            .appendDescriptionOf(descendantMatcher)1334            .appendText(" was found");1335        return false;1336      }1337      return true;1338    }1339  }1340  @VisibleForTesting1341  static final class IsClickableMatcher extends TypeSafeDiagnosingMatcher<View> {1342    @RemoteMsgField(order = 0)1343    private final boolean isClickable;1344    @RemoteMsgConstructor1345    private IsClickableMatcher(boolean isClickable) {1346      this.isClickable = isClickable;1347    }1348    @Override1349    public void describeTo(Description description) {1350      description.appendText("view.isClickable() is ").appendValue(isClickable);1351    }1352    @Override1353    protected boolean matchesSafely(View view, Description mismatchDescription) {1354      final boolean isClickable = view.isClickable();1355      if (isClickable != this.isClickable) {1356        mismatchDescription.appendText("view.isClickable() was ").appendValue(isClickable);1357        return false;1358      }1359      return true;1360    }1361  }1362  @VisibleForTesting1363  static final class IsDescendantOfAMatcher extends TypeSafeDiagnosingMatcher<View> {1364    @RemoteMsgField(order = 0)1365    private final Matcher<View> ancestorMatcher;1366    @RemoteMsgConstructor1367    private IsDescendantOfAMatcher(Matcher<View> ancestorMatcher) {1368      this.ancestorMatcher = ancestorMatcher;1369    }1370    @Override1371    public void describeTo(Description description) {1372      description1373          .appendText("is descendant of a view matching ")1374          .appendDescriptionOf(ancestorMatcher);1375    }1376    @Override1377    protected boolean matchesSafely(View view, Description mismatchDescription) {1378      boolean matches = checkAncestors(view.getParent());1379      if (!matches) {1380        mismatchDescription1381            .appendText("none of the ancestors match ")1382            .appendDescriptionOf(ancestorMatcher);1383      }1384      return matches;1385    }1386    private boolean checkAncestors(ViewParent viewParent) {1387      if (!(viewParent instanceof View)) {1388        return false;1389      }1390      if (ancestorMatcher.matches(viewParent)) {1391        return true;1392      }1393      return checkAncestors(viewParent.getParent());1394    }1395  }1396  @VisibleForTesting1397  static final class WithEffectiveVisibilityMatcher extends TypeSafeDiagnosingMatcher<View> {1398    @RemoteMsgField(order = 0)1399    private final Visibility visibility;1400    @RemoteMsgConstructor1401    private WithEffectiveVisibilityMatcher(Visibility visibility) {1402      this.visibility = visibility;1403    }1404    @Override1405    public void describeTo(Description description) {1406      description.appendText("view has effective visibility ").appendValue(visibility);1407    }1408    @Override1409    protected boolean matchesSafely(View view, Description mismatchDescription) {1410      if (visibility.getValue() == View.VISIBLE) {1411        if (view.getVisibility() != visibility.getValue()) {1412          mismatchDescription1413              .appendText("view.getVisibility() was ")1414              .appendValue(Visibility.forViewVisibility(view));1415          return false;1416        }1417        while (view.getParent() instanceof View) {1418          view = (View) view.getParent();1419          if (view.getVisibility() != visibility.getValue()) {1420            mismatchDescription1421                .appendText("ancestor ")1422                .appendValue(view)1423                .appendText("'s getVisibility() was ")1424                .appendValue(Visibility.forViewVisibility(view));1425            return false;1426          }1427        }1428        return true;1429      } else {1430        if (view.getVisibility() == visibility.getValue()) {1431          return true;1432        }1433        while (view.getParent() instanceof View) {1434          view = (View) view.getParent();1435          if (view.getVisibility() == visibility.getValue()) {1436            return true;1437          }1438        }1439        mismatchDescription1440            .appendText("neither view nor its ancestors have getVisibility() set to ")1441            .appendValue(visibility);1442        return false;1443      }1444    }1445  }1446  /**1447   * Returns a matcher that matches {@link android.view.View} based on background resource.1448   *1449   * <p>Note: This method compares images at a pixel level and might have significant performance1450   * implications for larger bitmaps.1451   *1452   * <p><b>This API is currently in beta.</b>1453   */1454  @ExperimentalTestApi1455  public static Matcher<View> hasBackground(final int drawableId) {1456    return new HasBackgroundMatcher(drawableId);1457  }1458  /**1459   * Returns a matcher that matches {@link android.widget.TextView} based on it's color.1460   *1461   * <p><b>This API is currently in beta.</b>1462   */1463  @ExperimentalTestApi1464  public static Matcher<View> hasTextColor(final int colorResId) {1465    return new BoundedDiagnosingMatcher<View, TextView>(TextView.class) {1466      private Context context;1467      @Override1468      protected boolean matchesSafely(TextView textView, Description mismatchDescription) {1469        context = textView.getContext();1470        int textViewColor = textView.getCurrentTextColor();1471        int expectedColor;1472        if (Build.VERSION.SDK_INT <= 22) {1473          expectedColor = context.getResources().getColor(colorResId);1474        } else {1475          expectedColor = context.getColor(colorResId);1476        }1477        mismatchDescription1478            .appendText("textView.getCurrentTextColor() was ")1479            .appendText(getColorHex(textViewColor));1480        return textViewColor == expectedColor;1481      }1482      @Override1483      protected void describeMoreTo(Description description) {1484        description.appendText("textView.getCurrentTextColor() is color with ");1485        if (context == null) {1486          description.appendText("ID ").appendValue(colorResId);1487        } else {1488          int color =1489              (Build.VERSION.SDK_INT <= 22)1490                  ? context.getResources().getColor(colorResId)1491                  : context.getColor(colorResId);1492          description.appendText("value " + getColorHex(color));1493        }1494      }1495      private String getColorHex(int color) {1496        return String.format(1497            Locale.ROOT, "#%02X%06X", (0xFF & Color.alpha(color)), (0xFFFFFF & color));1498      }1499    };1500  }1501  @VisibleForTesting1502  static final class WithAlphaMatcher extends TypeSafeDiagnosingMatcher<View> {1503    @RemoteMsgField(order = 0)1504    private final float alpha;1505    @RemoteMsgConstructor1506    private WithAlphaMatcher(final float alpha) {1507      this.alpha = alpha;1508    }1509    @Override1510    public void describeTo(Description description) {1511      description.appendText("view.getAlpha() is ").appendValue(alpha);1512    }1513    @Override1514    protected boolean matchesSafely(View view, Description mismatchDescription) {1515      final float alpha = view.getAlpha();1516      if (alpha != this.alpha) {1517        mismatchDescription.appendText("view.getAlpha() was ").appendValue(alpha);1518        return false;1519      }1520      return true;1521    }1522  }1523  @VisibleForTesting1524  static final class WithParentMatcher extends TypeSafeDiagnosingMatcher<View> {1525    @RemoteMsgField(order = 0)1526    private final Matcher<View> parentMatcher;1527    @RemoteMsgConstructor1528    private WithParentMatcher(Matcher<View> parentMatcher) {1529      this.parentMatcher = parentMatcher;1530    }1531    @Override1532    public void describeTo(Description description) {1533      description.appendText("view.getParent() ").appendDescriptionOf(parentMatcher);1534    }1535    @Override1536    protected boolean matchesSafely(View view, Description mismatchDescription) {1537      final ViewParent parent = view.getParent();1538      if (!parentMatcher.matches(parent)) {1539        mismatchDescription.appendText("view.getParent() ");1540        parentMatcher.describeMismatch(parent, mismatchDescription);1541        return false;1542      }1543      return true;1544    }1545  }1546  @VisibleForTesting1547  static final class WithChildMatcher extends TypeSafeDiagnosingMatcher<View> {1548    @RemoteMsgField(order = 0)1549    private final Matcher<View> childMatcher;1550    private final Matcher<ViewGroup> viewGroupMatcher = Matchers.isA(ViewGroup.class);1551    @RemoteMsgConstructor1552    private WithChildMatcher(Matcher<View> childMatcher) {1553      this.childMatcher = childMatcher;1554    }1555    @Override1556    public void describeTo(Description description) {1557      description1558          .appendText("(view ")1559          .appendDescriptionOf(viewGroupMatcher)1560          .appendText(" and has child matching: ")1561          .appendDescriptionOf(childMatcher)1562          .appendText(")");1563    }1564    @Override1565    protected boolean matchesSafely(View view, Description mismatchDescription) {1566      if (!viewGroupMatcher.matches(view)) {1567        mismatchDescription.appendText("view ");1568        viewGroupMatcher.describeMismatch(view, mismatchDescription);1569        return false;1570      }1571      ViewGroup group = (ViewGroup) view;1572      for (int i = 0; i < group.getChildCount(); i++) {1573        if (childMatcher.matches(group.getChildAt(i))) {1574          return true;1575        }1576      }1577      mismatchDescription1578          .appendText("All ")1579          .appendValue(group.getChildCount())1580          .appendText(" children did not match");1581      return false;1582    }1583  }1584  @VisibleForTesting1585  static final class HasChildCountMatcher extends BoundedDiagnosingMatcher<View, ViewGroup> {1586    @RemoteMsgField(order = 0)1587    private final int childCount;1588    @RemoteMsgConstructor1589    private HasChildCountMatcher(int childCount) {1590      super(ViewGroup.class);1591      this.childCount = childCount;1592    }1593    @Override1594    protected void describeMoreTo(Description description) {1595      description.appendText("viewGroup.getChildCount() to be ").appendValue(childCount);1596    }1597    @Override1598    protected boolean matchesSafely(ViewGroup viewGroup, Description mismatchDescription) {1599      mismatchDescription1600          .appendText("viewGroup.getChildCount() was ")1601          .appendValue(viewGroup.getChildCount());1602      return viewGroup.getChildCount() == childCount;1603    }1604  }1605  @VisibleForTesting1606  static final class HasMinimumChildCountMatcher extends BoundedDiagnosingMatcher<View, ViewGroup> {1607    @RemoteMsgField(order = 0)1608    private final int minChildCount;1609    @RemoteMsgConstructor1610    private HasMinimumChildCountMatcher(int minChildCount) {1611      super(ViewGroup.class);1612      this.minChildCount = minChildCount;1613    }1614    @Override1615    protected void describeMoreTo(Description description) {1616      description1617          .appendText("viewGroup.getChildCount() to be at least ")1618          .appendValue(minChildCount);1619    }1620    @Override1621    protected boolean matchesSafely(ViewGroup viewGroup, Description mismatchDescription) {1622      mismatchDescription1623          .appendText("viewGroup.getChildCount() was ")1624          .appendValue(viewGroup.getChildCount());1625      return viewGroup.getChildCount() >= minChildCount;1626    }1627  }1628  @VisibleForTesting1629  static final class IsRootMatcher extends TypeSafeDiagnosingMatcher<View> {1630    @RemoteMsgConstructor1631    private IsRootMatcher() {}1632    @Override1633    public void describeTo(Description description) {1634      description.appendText("view.getRootView() to equal view");1635    }1636    @Override1637    protected boolean matchesSafely(View view, Description mismatchDescription) {1638      final View rootView = view.getRootView();1639      if (rootView != view) {1640        mismatchDescription.appendText("view.getRootView() was ").appendValue(rootView);1641        return false;1642      }1643      return true;1644    }1645  }1646  @VisibleForTesting1647  static final class SupportsInputMethodsMatcher extends TypeSafeDiagnosingMatcher<View> {1648    @RemoteMsgConstructor1649    private SupportsInputMethodsMatcher() {}1650    @Override1651    public void describeTo(Description description) {1652      description.appendText("view.onCreateInputConnection() is not null");1653    }1654    @Override1655    protected boolean matchesSafely(View view, Description mismatchDescription) {1656      // At first glance, it would make sense to use view.onCheckIsTextEditor, but the android1657      // javadoc is wishy-washy about whether authors are required to implement this method when1658      // implementing onCreateInputConnection.1659      if (view.onCreateInputConnection(new EditorInfo()) == null) {1660        mismatchDescription.appendText("view.onCreateInputConnection() was null");1661        return false;1662      }1663      return true;1664    }1665  }1666  @VisibleForTesting1667  static final class HasImeActionMatcher extends TypeSafeDiagnosingMatcher<View> {1668    @RemoteMsgField(order = 0)1669    private final Matcher<Integer> imeActionMatcher;1670    @RemoteMsgConstructor1671    private HasImeActionMatcher(final Matcher<Integer> imeActionMatcher) {1672      this.imeActionMatcher = imeActionMatcher;1673    }1674    @Override1675    public void describeTo(Description description) {1676      description1677          .appendText("(view.onCreateInputConnection() is not null and editorInfo.actionId ")1678          .appendDescriptionOf(imeActionMatcher)1679          .appendText(")");1680    }1681    @Override1682    protected boolean matchesSafely(View view, Description mismatchDescription) {1683      EditorInfo editorInfo = new EditorInfo();1684      InputConnection inputConnection = view.onCreateInputConnection(editorInfo);1685      if (inputConnection == null) {1686        mismatchDescription.appendText("view.onCreateInputConnection() was null");1687        return false;1688      }1689      int actionId =1690          editorInfo.actionId != 01691              ? editorInfo.actionId1692              : editorInfo.imeOptions & EditorInfo.IME_MASK_ACTION;1693      if (!imeActionMatcher.matches(actionId)) {1694        mismatchDescription.appendText("editorInfo.actionId ");1695        imeActionMatcher.describeMismatch(actionId, mismatchDescription);1696        return false;1697      }1698      return true;1699    }1700  }1701  @VisibleForTesting1702  static final class HasLinksMatcher extends BoundedDiagnosingMatcher<View, TextView> {1703    @RemoteMsgConstructor1704    private HasLinksMatcher() {1705      super(TextView.class);1706    }1707    @Override1708    protected void describeMoreTo(Description description) {1709      description.appendText("textView.getUrls().length > 0");1710    }1711    @Override1712    protected boolean matchesSafely(TextView textView, Description mismatchDescription) {1713      mismatchDescription1714          .appendText("textView.getUrls().length was ")1715          .appendValue(textView.getUrls().length);1716      return textView.getUrls().length > 0;1717    }1718  }1719  @VisibleForTesting1720  static final class WithSpinnerTextIdMatcher extends BoundedDiagnosingMatcher<View, Spinner> {1721    @RemoteMsgField(order = 0)1722    private final int resourceId;1723    private String resourceName = null;1724    private String expectedText = null;1725    @RemoteMsgConstructor1726    private WithSpinnerTextIdMatcher(int resourceId) {1727      super(Spinner.class);1728      this.resourceId = resourceId;1729    }1730    @Override1731    protected void describeMoreTo(Description description) {1732      description1733          .appendText("spinner.getSelectedItem().toString() to match string from resource id: ")1734          .appendValue(resourceId);1735      if (resourceName != null) {1736        description.appendText(" [").appendText(resourceName).appendText("]");1737      }1738      if (expectedText != null) {1739        description.appendText(" value: ").appendText(expectedText);1740      }1741    }1742    @Override1743    protected boolean matchesSafely(Spinner spinner, Description mismatchDescription) {1744      if (expectedText == null) {1745        try {1746          expectedText = spinner.getResources().getString(resourceId);1747        } catch (Resources.NotFoundException ignored) {1748          /*1749           * view could be from a context unaware of the resource id.1750           */1751        }1752        resourceName = safeGetResourceEntryName(spinner.getResources(), resourceId);1753      }1754      if (expectedText == null) {1755        mismatchDescription.appendText("failure to resolve resourceId ").appendValue(resourceId);1756        return false;1757      }1758      Object selectedItem = spinner.getSelectedItem();1759      if (selectedItem == null) {1760        mismatchDescription.appendText("spinner.getSelectedItem() was null");1761        return false;1762      }1763      mismatchDescription1764          .appendText("spinner.getSelectedItem().toString() was ")1765          .appendValue(selectedItem.toString());1766      return expectedText.equals(selectedItem.toString());1767    }1768  }1769  @VisibleForTesting1770  static final class WithSpinnerTextMatcher extends BoundedDiagnosingMatcher<View, Spinner> {1771    @RemoteMsgField(order = 0)1772    private final Matcher<String> stringMatcher;1773    @RemoteMsgConstructor1774    private WithSpinnerTextMatcher(Matcher<String> stringMatcher) {1775      super(Spinner.class);1776      this.stringMatcher = stringMatcher;1777    }1778    @Override1779    protected void describeMoreTo(Description description) {1780      description1781          .appendText("spinner.getSelectedItem().toString() to match ")1782          .appendDescriptionOf(stringMatcher);1783    }1784    @Override1785    protected boolean matchesSafely(Spinner spinner, Description mismatchDescription) {1786      Object selectedItem = spinner.getSelectedItem();1787      if (selectedItem == null) {1788        mismatchDescription.appendText("spinner.getSelectedItem() was null");1789        return false;1790      }1791      mismatchDescription1792          .appendText("spinner.getSelectedItem().toString() was ")1793          .appendValue(selectedItem.toString());1794      return stringMatcher.matches(spinner.getSelectedItem().toString());1795    }1796  }1797  @VisibleForTesting1798  static final class IsJavascriptEnabledMatcher extends BoundedDiagnosingMatcher<View, WebView> {1799    @RemoteMsgConstructor1800    private IsJavascriptEnabledMatcher() {1801      super(WebView.class);1802    }1803    @Override1804    protected void describeMoreTo(Description description) {1805      description.appendText("webView.getSettings().getJavaScriptEnabled() is ").appendValue(true);1806    }1807    @Override1808    protected boolean matchesSafely(WebView webView, Description mismatchDescription) {1809      mismatchDescription1810          .appendText("webView.getSettings().getJavaScriptEnabled() was ")1811          .appendValue(webView.getSettings().getJavaScriptEnabled());1812      return webView.getSettings().getJavaScriptEnabled();1813    }1814  }1815  @VisibleForTesting1816  static final class HasErrorTextMatcher extends BoundedDiagnosingMatcher<View, EditText> {1817    @RemoteMsgField(order = 0)1818    private final Matcher<String> stringMatcher;1819    @RemoteMsgConstructor1820    private HasErrorTextMatcher(Matcher<String> stringMatcher) {1821      super(EditText.class);1822      this.stringMatcher = stringMatcher;1823    }1824    @Override1825    protected void describeMoreTo(Description description) {1826      description.appendText("editText.getError() to match ").appendDescriptionOf(stringMatcher);1827    }1828    @Override1829    protected boolean matchesSafely(EditText view, Description mismatchDescription) {1830      mismatchDescription.appendText("editText.getError() was ").appendValue(view.getError());1831      return stringMatcher.matches(view.getError());1832    }1833  }1834  @VisibleForTesting1835  static final class WithInputTypeMatcher extends BoundedDiagnosingMatcher<View, EditText> {1836    @RemoteMsgField(order = 0)1837    private final int inputType;1838    @RemoteMsgConstructor1839    private WithInputTypeMatcher(int inputType) {1840      super(EditText.class);1841      this.inputType = inputType;1842    }1843    @Override1844    protected void describeMoreTo(Description description) {1845      description.appendText("editText.getInputType() is ").appendValue(inputType);1846    }1847    @Override1848    protected boolean matchesSafely(EditText view, Description mismatchDescription) {1849      mismatchDescription1850          .appendText("editText.getInputType() was ")1851          .appendValue(view.getInputType());1852      return view.getInputType() == inputType;1853    }1854  }1855  @VisibleForTesting1856  static final class WithParentIndexMatcher extends TypeSafeDiagnosingMatcher<View> {1857    @RemoteMsgField(order = 0)1858    private final int index;1859    private final Matcher<ViewGroup> parentViewGroupMatcher = Matchers.isA(ViewGroup.class);1860    @RemoteMsgConstructor1861    private WithParentIndexMatcher(int index) {1862      this.index = index;1863    }1864    @Override1865    public void describeTo(Description description) {1866      description1867          .appendText("(view.getParent() ")1868          .appendDescriptionOf(parentViewGroupMatcher)1869          .appendText(" and is at child index ")1870          .appendValue(index)1871          .appendText(")");1872    }1873    @Override1874    protected boolean matchesSafely(View view, Description mismatchDescription) {1875      ViewParent parent = view.getParent();1876      if (!parentViewGroupMatcher.matches(parent)) {1877        mismatchDescription.appendText("view.getParent() ");1878        parentViewGroupMatcher.describeMismatch(parent, mismatchDescription);1879        return false;1880      }1881      if (((ViewGroup) parent).getChildCount() <= index) {1882        mismatchDescription...

Source:IsAvroObjectEqual.java

...290                    matches = false;291                }292            }293            if (!matches && objectPath.isEmpty()) { // mismatch and we are the top-level element294                mismatchDescription.appendDescriptionOf(mismatchList);295            }296            return matches;297        }298    }299    private static abstract class AbstractFieldMatcher<T> extends AvroDiagnosingMatcher<T> {300        private final Matcher<?> valueMatcher;301        public AbstractFieldMatcher(Class<?> expectedType, List<String> fieldPath, Matcher<?> valueMatcher) {302            super(expectedType, fieldPath);303            this.valueMatcher = valueMatcher;304        }305        @Override306        protected boolean matchesSafely(T item, Description mismatchDescription) {307            Object value = getValue(item);308            if (valueMatcher.matches(value)) {...

Source:InvocationMatcher_ESTest.java

...190  public void test10()  throws Throwable  {191      Class<StringEndsWith> class0 = StringEndsWith.class;192      StringStartsWith stringStartsWith0 = new StringStartsWith("UU!iWT2y=4wfNK~");193      Description.NullDescription description_NullDescription0 = new Description.NullDescription();194      Description description0 = description_NullDescription0.appendDescriptionOf(stringStartsWith0);195      stringStartsWith0.describeMismatchSafely(".Win", description0);196      IsEventFrom isEventFrom0 = new IsEventFrom(class0, stringStartsWith0);197      Object[] objectArray0 = new Object[6];198      objectArray0[2] = (Object) ".Win";199      Object object0 = new Object();200      objectArray0[4] = (Object) stringStartsWith0;201      IsInstanceOf isInstanceOf0 = new IsInstanceOf(class0);202      Invocation invocation0 = mock(Invocation.class, new ViolatedAssumptionAnswer());203      Invocation invocation1 = mock(Invocation.class, new ViolatedAssumptionAnswer());204      doReturn("UU!iWT2y=4wfNK~", "").when(invocation1).toString();205      doReturn(objectArray0).when(invocation1).getArguments();206      doReturn(isInstanceOf0, "UU!iWT2y=4wfNK~", (Object) null, (Object) null).when(invocation1).getMock();207      InvocationMatcher invocationMatcher0 = new InvocationMatcher(invocation1);208      Answer<StringStartsWith> answer0 = (Answer<StringStartsWith>) mock(Answer.class, new ViolatedAssumptionAnswer());...

Source:ExpectationCheckResult.java

...51        return new ExpectationCheckResult<E, Q>(true, foundElements);52    }53    54    public String toString(){55    	return Describer.newDescription().appendDescriptionOf(this).toString();56    }57}...

Source:DescriptionBuilder.java

...49  }50  private <T> void addError(String reason, T actual, Matcher<? super T> matcher) {51    description.appendText(reason)52      .appendText("\nExpected: ")53      .appendDescriptionOf(matcher)54      .appendText("\n     but: ");55    matcher.describeMismatch(actual, description);56    description.appendText("\nLocation: ")57      .appendText(Throwables.getStackTraceAsString(new Exception()));58    matches = false;59  }60  public <T> DescriptionBuilder expected(String reason) {61    description.appendText(reason).appendText("\nExpected to not be reachable");62    description.appendText("\nLocation: ").appendText(63        Throwables.getStackTraceAsString(new Exception()));64    matches = false;65    return this;66  }67  public Description getDescription() {...

Source:CastingMatcher.java

...48    @Override49    public void describeTo(Description description) {50        description.appendText(typeDescription);51        if (matcher != null) {52            description.appendText(" ").appendDescriptionOf(matcher);53        }54    }55}...

Source:Description$NullDescription.java

1public final class org.hamcrest.Description$NullDescription implements org.hamcrest.Description {2  public org.hamcrest.Description$NullDescription();3  public org.hamcrest.Description appendDescriptionOf(org.hamcrest.SelfDescribing);4  public org.hamcrest.Description appendList(java.lang.String, java.lang.String, java.lang.String, java.lang.Iterable<? extends org.hamcrest.SelfDescribing>);5  public org.hamcrest.Description appendText(java.lang.String);6  public org.hamcrest.Description appendValue(java.lang.Object);7  public <T> org.hamcrest.Description appendValueList(java.lang.String, java.lang.String, java.lang.String, T...);8  public <T> org.hamcrest.Description appendValueList(java.lang.String, java.lang.String, java.lang.String, java.lang.Iterable<T>);9  public java.lang.String toString();10}...

appendDescriptionOf

Using AI Code Generation

1import org.hamcrest.Description;2import org.hamcrest.StringDescription;3import org.hamcrest.TextDescription;4import org.hamcrest.core.IsEqual;5public class NullDescriptionExample {6    public static void main(String[] args) {7        Description description = new StringDescription();8        description.appendDescriptionOf(new IsEqual("test"));9        System.out.println(description);10        description = new TextDescription(System.out);11        description.appendDescriptionOf(new IsEqual("test"));12        System.out.println(description);13        description = new NullDescription();14        description.appendDescriptionOf(new IsEqual("test"));15        System.out.println(description);16    }17}

appendDescriptionOf

Using AI Code Generation

1package com.java2novice.hamcrest;2import org.hamcrest.Description;3import org.hamcrest.Matcher;4import org.hamcrest.StringDescription;5import org.junit.Assert;6import org.junit.Test;7public class MyNullDescriptionTest {8	public void testNullDescription() {9		Matcher<String> matcher = new MyStringMatcher();10		Description desc = new StringDescription();11		matcher.describeTo(desc);12		Assert.assertEquals("My custom string matcher", desc.toString());13	}14	private class MyStringMatcher extends org.hamcrest.TypeSafeMatcher<String> {15		public void describeTo(Description desc) {16			desc.appendText("My custom string matcher");17		}18		protected boolean matchesSafely(String str) {19			return false;20		}21	}22}

appendDescriptionOf

Using AI Code Generation

1import org.hamcrest.Description2import org.hamcrest.Description.NullDescription3import org.hamcrest.Matcher4import org.hamcrest.Matchers.equalTo5import org.hamcrest.Matchers.is6def description = new NullDescription()7def matcher = is(equalTo(1))8matcher.appendDescriptionOf(description)9println description.toString()10import org.hamcrest.Description11import org.hamcrest.Description.StringDescription12import org.hamcrest.Matcher13import org.hamcrest.Matchers.equalTo14import org.hamcrest.Matchers.is15def description = new StringDescription()16def matcher = is(equalTo(1))17matcher.appendDescriptionOf(description)

appendDescriptionOf

Using AI Code Generation

1package com.example;2import org.hamcrest.Description;3import org.hamcrest.Description.NullDescription;4public class NullDescriptionAppendDescriptionOfExample {5    public static void main(String[] args) {6        NullDescription nullDescription = new NullDescription();7        nullDescription.appendDescriptionOf(null);8        System.out.println(nullDescription.toString());9    }10}

JUnit Tutorial:

LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.

JUnit Tutorial Chapters:

Here are the detailed JUnit testing chapters to help you get started:

Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
What is the JUnit framework
Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.