How to use describeMismatch method of org.hamcrest.core.Is class

Best junit code snippet using org.hamcrest.core.Is.describeMismatch

Source:ValidationErrorMatchers.java

...38      @Override39      protected boolean matchesSafely(JsonObject representation, Description description) {40        final Matcher<Iterable<? super ValidationError>> iterableMatcher = IsIterableContaining.hasItem(matcher);41        final List<ValidationError> errors = errorsFromJson(representation);42        iterableMatcher.describeMismatch(errors, description);43        return iterableMatcher.matches(errors);44      }45    };46  }47  public static TypeSafeDiagnosingMatcher<HttpFailure> isErrorWith(Matcher<ValidationError> matcher) {48    return new TypeSafeDiagnosingMatcher<HttpFailure>() {49      @Override50      public void describeTo(Description description) {51        description52          .appendText("Validation error which ").appendDescriptionOf(matcher);53      }54      @Override55      protected boolean matchesSafely(HttpFailure failure, Description description) {56        if (failure instanceof ValidationErrorFailure) {57          final Matcher<Iterable<? super ValidationError>> iterableMatcher58            = IsIterableContaining.hasItem(matcher);59          final Collection<ValidationError> errors = ((ValidationErrorFailure) failure).getErrors();60          iterableMatcher.describeMismatch(errors, description);61          return iterableMatcher.matches(errors);62        } else {63          description.appendText("is not a validation error failure");64          return false;65        }66      }67    };68  }69  public static TypeSafeDiagnosingMatcher<ValidationError> hasNullParameter(String key) {70    return hasParameter(key, null);71  }72  public static TypeSafeDiagnosingMatcher<ValidationError> hasUUIDParameter(String key, UUID value) {73    return hasParameter(key, value.toString());74  }75  public static TypeSafeDiagnosingMatcher<ValidationError> hasParameter(String key, String value) {76    return new TypeSafeDiagnosingMatcher<>() {77      @Override78      public void describeTo(Description description) {79        description.appendText("has parameter with key ").appendValue(key)80          .appendText(" and value ").appendValue(value);81      }82      @Override83      protected boolean matchesSafely(ValidationError error, Description description) {84        final boolean hasParameter = error.hasParameter(key, value);85        if (!hasParameter) {86          if (!error.hasParameter(key)) {87            description.appendText("does not have parameter ").appendValue(key);88          } else {89            description.appendText("parameter has value ").appendValue(error.getParameter(key));90          }91        }92        return hasParameter;93      }94    };95  }96  public static TypeSafeDiagnosingMatcher<ValidationError> hasMessage(String message) {97    return new TypeSafeDiagnosingMatcher<>() {98      @Override99      public void describeTo(Description description) {100        description.appendText("has message ").appendValue(message);101      }102      @Override103      protected boolean matchesSafely(ValidationError error, Description description) {104        final Matcher<Object> matcher = hasProperty("message", equalTo(message));105        matcher.describeMismatch(error, description);106        return matcher.matches(error);107      }108    };109  }110  public static TypeSafeDiagnosingMatcher<ValidationError> hasMessageContaining(String message) {111    return new TypeSafeDiagnosingMatcher<>() {112      @Override113      public void describeTo(Description description) {114        description.appendText("has message ").appendValue(message);115      }116      @Override117      protected boolean matchesSafely(ValidationError error, Description description) {118        final Matcher<Object> matcher = hasProperty("message", containsString(message));119        matcher.describeMismatch(error, description);120        return matcher.matches(error);121      }122    };123  }124  public static TypeSafeDiagnosingMatcher<JsonObject> hasErrors(int numberOfErrors) {125    return new TypeSafeDiagnosingMatcher<>() {126      @Override127      public void describeTo(Description description) {128        description.appendText("Errors array of size ").appendValue(numberOfErrors);129      }130      @Override131      protected boolean matchesSafely(JsonObject representation, Description description) {132        int actualNumberOfErrors = ofNullable(representation.getJsonArray("errors"))133          .map(JsonArray::size)134          .orElse(0);135        Matcher<Integer> sizeMatcher = Is.is(actualNumberOfErrors);136        sizeMatcher.describeMismatch(actualNumberOfErrors, description);137        return sizeMatcher.matches(numberOfErrors);138      }139    };140  }141  private static ValidationError fromJson(JsonObject representation) {142    final Map<String, String> parameters = toStream(representation, "parameters")143      .filter(Objects::nonNull)144      .filter(p -> p.containsKey("key"))145      .filter(p -> p.containsKey("value"))146      .filter(p -> p.getString("key") != null)147      .filter(p -> p.getString("value") != null)148      .collect(Collectors.toMap(149        p -> p.getString("key"),150        p -> p.getString("value")));...

Source:CombinableTest.java

...26    @Test27    public void bothDescribesItself() {28        assertEquals("(not <3> and not <4>)", NOT_3_AND_NOT_4.toString());29        StringDescription mismatch = new StringDescription();30        NOT_3_AND_NOT_4.describeMismatch(3, mismatch);31        assertEquals("was <3>", mismatch.toString());32    }33    @Test34    public void eitherAcceptsAndRejects() {35        assertThat(3, EITHER_3_OR_4);36        assertThat(6, not(EITHER_3_OR_4));37    }38    @Test39    public void acceptsAndRejectsThreeOrs() {40        final CombinableMatcher<Integer> orTriple = EITHER_3_OR_4.or(greaterThan(10));41        assertThat(11, orTriple);42        assertThat(9, not(orTriple));43    }44    @Test45    public void eitherDescribesItself() {46        Assert.assertEquals("(<3> or <4>)", EITHER_3_OR_4.toString());47        StringDescription mismatch = new StringDescription();48        EITHER_3_OR_4.describeMismatch(6, mismatch);49        Assert.assertEquals("was <6>", mismatch.toString());50    }51    @Test52    public void picksUpTypeFromLeftHandSideOfExpression() {53        assertThat("yellow", both(equalTo("yellow")).and(notNullValue()));54    }55}...

Source:Is.java

...24    public void describeTo(Description description) {25        description.appendText("is ").appendDescriptionOf(matcher);26    }27    @Override28    public void describeMismatch(Object item, Description mismatchDescription) {29        matcher.describeMismatch(item, mismatchDescription);30    }31    /**32     * Decorates another Matcher, retaining its behaviour, but allowing tests33     * to be slightly more expressive.34     * For example:35     * <pre>assertThat(cheese, is(equalTo(smelly)))</pre>36     * instead of:37     * <pre>assertThat(cheese, equalTo(smelly))</pre>38     * 39     */40    public static <T> Matcher<T> is(Matcher<T> matcher) {41        return new Is<T>(matcher);42    }43    /**...

Source:C3352Is.java

...28    @Factory29    public static <T> Matcher<T> isA(Class<T> cls) {30        return m9128is(IsInstanceOf.instanceOf(cls));31    }32    public void describeMismatch(Object obj, Description description) {33        this.matcher.describeMismatch(obj, description);34    }35    public void describeTo(Description description) {36        description.appendText("is ").appendDescriptionOf(this.matcher);37    }38    public boolean matches(Object obj) {39        return this.matcher.matches(obj);40    }41}...

describeMismatch

Using AI Code Generation

1import org.hamcrest.BaseMatcher;2import org.hamcrest.Description;3import org.hamcrest.Matcher;4import org.hamcrest.core.Is;5import org.hamcrest.core.IsNot;6import org.hamcrest.core.IsNull;7import org.junit.Test;8import static org.hamcrest.MatcherAssert.assertThat;9import static org.hamcrest.Matchers.*;10import static org.hamcrest.core.Is.is;11import static org.hamcrest.core.IsNot.not;12import static org.hamcrest.core.IsNull.nullValue;13public class HamcrestMatchersTest {14    public void testAssertThatTwoValuesAreEqual() {15        assertThat("failure - strings are not equal", "text", is("text"));16    }17    public void testAssertThatTwoValuesAreNotEqual() {18        assertThat("failure - strings are equal", "text", is(not("text")));19    }20    public void testAssertThatTextDoesNotContainText() {21        assertThat("failure - text contains text", "text", not(containsString("text")));22    }23    public void testAssertThatArrayHasSize() {24        assertThat("failure - array does not have correct size", new String[]{"one", "two", "three"}, arrayWithSize(3));25    }26    public void testAssertThatMapHasSize() {27        assertThat("failure - map does not have correct size", new HashMap<String, String>() {{28            put("one", "two");29            put("three", "four");30        }}, hasSize(2));31    }32    public void testAssertThatCollectionIsEmpty() {33        assertThat("failure - collection is not empty", new ArrayList<Object>(), empty());34    }35    public void testAssertThatTextIsEmpty() {36        assertThat("failure - text is not empty", "", emptyString());37    }38    public void testAssertThatTextIsNotEmpty() {39        assertThat("failure - text is empty", "text", not(emptyString()));40    }41    public void testAssertThatObjectIsNull() {42        assertThat("failure - object is not null", null, nullValue());43    }44    public void testAssertThatObjectIsNotNull() {45        assertThat("failure - object is null", new Object(), notNullValue());46    }47    public void testAssertThatObjectIsSame() {48        Object object = new Object();49        assertThat("failure - objects are not same", object, sameInstance(object));

describeMismatch

Using AI Code Generation

1import org.hamcrest.core.Is;2public class IsTest {3    public static void main(String[] args) {4        Is is = new Is("test");5        System.out.println(is.matches("test"));6        System.out.println(is.matches("test1"));7        System.out.println(is.matches(null));8    }9}10import org.hamcrest.Description;11import org.hamcrest.StringDescription;12import org.hamcrest.core.Is;13public class IsTest {14    public static void main(String[] args) {15        Is is = new Is("test");16        Description desc = new StringDescription();17        is.describeMismatch("test1", desc);18        System.out.println(desc.toString());19    }20}21import org.hamcrest.Description;22import org.hamcrest.StringDescription;23import org.hamcrest.core.Is;24public class IsTest {25    public static void main(String[] args) {26        Is is = new Is("test");27        Description desc = new StringDescription();28        is.describeMismatch(null, desc);29        System.out.println(desc.toString());30    }31}32import org.hamcrest.Description;33import org.hamcrest.StringDescription;34import org.hamcrest.core.Is;35public class IsTest {36    public static void main(String[] args) {37        Is is = new Is("test");38        Description desc = new StringDescription();39        is.describeMismatch("test", desc);40        System.out.println(desc.toString());41    }42}43import org.hamcrest.Description;44import org.hamcrest.StringDescription;45import org.hamcrest.core.Is;46public class IsTest {47    public static void main(String[] args) {48        Is is = new Is(null);49        Description desc = new StringDescription();50        is.describeMismatch(null, desc);51        System.out.println(desc.toString());52    }53}54import org.hamcrest.Description;55import org.hamcrest.StringDescription;56import org.hamcrest.core.Is;57public class IsTest {58    public static void main(String[] args) {59        Is is = new Is("test");

describeMismatch

Using AI Code Generation

1package org.hamcrest.core;2import org.hamcrest.Description;3import org.hamcrest.Matcher;4import org.hamcrest.TypeSafeMatcher;5public class Is<T> extends TypeSafeMatcher<T> {6  private final Matcher<? super T> matcher;7  public Is(Matcher<? super T> matcher) {8    this.matcher = matcher;9  }10  public boolean matchesSafely(T item) {11    return matcher.matches(item);12  }13  public void describeTo(Description description) {14    description.appendText("is ").appendDescriptionOf(matcher);15  }16  protected void describeMismatchSafely(T item, Description mismatchDescription) {17    matcher.describeMismatch(item, mismatchDescription);18  }19}20package org.hamcrest.core;21import org.hamcrest.Description;22import org.hamcrest.Matcher;23import org.hamcrest.StringDescription;24import org.junit.Test;25import static org.hamcrest.MatcherAssert.assertThat;26import static org.hamcrest.core.Is.is;27public class IsTest {28  public void delegatesMismatchDescriptionToNestedMatcher() throws Exception {29    final Matcher<String> matcher = new Is<String>(new Matcher<String>() {30      public boolean matches(Object item) {31        return false;32      }33      public void describeTo(Description description) {34        description.appendText("a string");35      }36      public void describeMismatch(Object item, Description mismatchDescription) {37        mismatchDescription.appendText("was ").appendValue(item);38      }39    });40    final Description description = new StringDescription();41    matcher.describeMismatch("something", description);42    assertThat(description.toString(), is("was \"something\""));43  }44}45package org.hamcrest.core;46import org.hamcrest.Description;47import org.hamcrest.Matcher;48import org.hamcrest.StringDescription;49import org.junit.Test;50import static org.hamcrest.MatcherAssert.assertThat;51import static org.hamcrest.core.Is.is;52public class IsTest {53  public IsTest();54  public void delegatesMismatchDescriptionToNestedMatcher() throws Exception;

describeMismatch

Using AI Code Generation

1import org.hamcrest.Matcher2import org.hamcrest.core.Is3import org.junit.Assert.assertThat4class IsTest {5    def "IsTest"() {6        def matcher = Is.is(expected)7        assertThat(actual, matcher)8    }9}10import org.hamcrest.Matcher11import org.hamcrest.core.IsNot12import org.junit.Assert.assertThat13class IsNotTest {14    def "IsNotTest"() {15        def matcher = IsNot.not(Is.is(notExpected))16        assertThat(actual, matcher)17    }18}19import org.hamcrest.Matcher20import org.hamcrest.core.IsEqual21import org.junit.Assert.assertThat22class IsEqualTest {23    def "IsEqualTest"() {24        def matcher = IsEqual.equalTo(expected)25        assertThat(actual, matcher)26    }27}

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