How to use describeTo method of org.hamcrest.core.Is class
Best junit code snippet using org.hamcrest.core.Is.describeTo
Source:ExpressiveObjectsMatchers.java 
...48 public boolean matchesSafely(final String actual) {49 return super.matchesSafely(StringUtils.stripNewLines(actual));50 }51 @Override52 public void describeTo(final Description description) {53 description.appendText("a string (ignoring new lines) containing").appendValue(strippedExpected);54 }55 };56 }57 @Factory58 public static Matcher<String> equalToStripNewLines(final String expected) {59 final String strippedExpected = StringUtils.stripNewLines(expected);60 return new IsEqual<String>(strippedExpected) {61 @Override62 public boolean matches(final Object actualObj) {63 final String actual = (String) actualObj;64 return super.matches(StringUtils.stripNewLines(actual));65 }66 @Override67 public void describeTo(final Description description) {68 description.appendText("a string (ignoring new lines) equal to").appendValue(strippedExpected);69 }70 };71 }72 @Factory73 public static StringStartsWith startsWithStripNewLines(final String expected) {74 final String strippedExpected = StringUtils.stripNewLines(expected);75 return new StringStartsWith(strippedExpected) {76 @Override77 public boolean matchesSafely(final String actual) {78 return super.matchesSafely(StringUtils.stripNewLines(actual));79 }80 @Override81 public void describeTo(final Description description) {82 description.appendText("a string (ignoring new lines) starting with").appendValue(strippedExpected);83 }84 };85 }86 @Factory87 public static Matcher<String> endsWithStripNewLines(final String expected) {88 final String strippedExpected = StringUtils.stripNewLines(expected);89 return new StringEndsWith(strippedExpected) {90 @Override91 public boolean matchesSafely(final String actual) {92 return super.matchesSafely(StringUtils.stripNewLines(actual));93 }94 @Override95 public void describeTo(final Description description) {96 description.appendText("a string (ignoring new lines) ending with").appendValue(strippedExpected);97 }98 };99 }100 @Factory101 public static <T> Matcher<T> anInstanceOf(final Class<T> expected) {102 return new TypeSafeMatcher<T>() {103 @Override104 public boolean matchesSafely(final T actual) {105 return expected.isAssignableFrom(actual.getClass());106 }107 @Override108 public void describeTo(final Description description) {109 description.appendText("an instance of ").appendValue(expected);110 }111 };112 }113 @Factory114 public static Matcher<String> nonEmptyString() {115 return new TypeSafeMatcher<String>() {116 @Override117 public boolean matchesSafely(final String str) {118 return str != null && str.length() > 0;119 }120 @Override121 public void describeTo(final Description description) {122 description.appendText("a non empty string");123 }124 };125 }126 @Factory127 @SuppressWarnings("unchecked")128 public static Matcher<String> nonEmptyStringOrNull() {129 return CoreMatchers.anyOf(nullValue(String.class), nonEmptyString());130 }131 @Factory132 public static Matcher<List<?>> containsElementThat(final Matcher<?> elementMatcher) {133 return new TypeSafeMatcher<List<?>>() {134 @Override135 public boolean matchesSafely(final List<?> list) {136 for (final Object o : list) {137 if (elementMatcher.matches(o)) {138 return true;139 }140 }141 return false;142 }143 @Override144 public void describeTo(final Description description) {145 description.appendText("contains element that ").appendDescriptionOf(elementMatcher);146 }147 };148 }149 @Factory150 public static <T extends Comparable<T>> Matcher<T> greaterThan(final T c) {151 return Matchers.greaterThan(c);152 }153 @Factory154 public static Matcher<Class<?>> classEqualTo(final Class<?> operand) {155 class ClassEqualsMatcher extends TypeSafeMatcher<Class<?>> {156 private final Class<?> clazz;157 public ClassEqualsMatcher(final Class<?> clazz) {158 this.clazz = clazz;159 }160 @Override161 public boolean matchesSafely(final Class<?> arg) {162 return clazz == arg;163 }164 @Override165 public void describeTo(final Description description) {166 description.appendValue(clazz);167 }168 }169 return new ClassEqualsMatcher(operand);170 }171 @Factory172 public static Matcher<File> existsAndNotEmpty() {173 return new TypeSafeMatcher<File>() {174 @Override175 public void describeTo(final Description arg0) {176 arg0.appendText("exists and is not empty");177 }178 @Override179 public boolean matchesSafely(final File f) {180 return f.exists() && f.length() > 0;181 }182 };183 }184 @Factory185 public static Matcher<String> matches(final String regex) {186 return new TypeSafeMatcher<String>() {187 @Override188 public void describeTo(final Description description) {189 description.appendText("string matching " + regex);190 }191 @Override192 public boolean matchesSafely(final String str) {193 return str.matches(regex);194 }195 };196 }197 @Factory198 public static <X> Matcher<Class<X>> anySubclassOf(final Class<X> cls) {199 return new TypeSafeMatcher<Class<X>>() {200 @Override201 public void describeTo(final Description arg0) {202 arg0.appendText("is subclass of ").appendText(cls.getName());203 }204 @Override205 public boolean matchesSafely(final Class<X> item) {206 return cls.isAssignableFrom(item);207 }208 };209 }210 @Factory211 public static <T> Matcher<List<T>> sameContentsAs(final List<T> expected) {212 return new TypeSafeMatcher<List<T>>() {213 @Override214 public void describeTo(final Description description) {215 description.appendText("same sequence as " + expected);216 }217 @Override218 public boolean matchesSafely(final List<T> actual) {219 return actual.containsAll(expected) && expected.containsAll(actual);220 }221 };222 }223 @Factory224 public static <T> Matcher<List<T>> listContaining(final T t) {225 return new TypeSafeMatcher<List<T>>() {226 227 @Override228 public void describeTo(Description arg0) {229 arg0.appendText("list containing ").appendValue(t);230 }231 232 @Override233 public boolean matchesSafely(List<T> arg0) {234 return arg0.contains(t);235 }236 };237 }238 @Factory239 public static <T> Matcher<List<T>> listContainingAll(final T... items) {240 return new TypeSafeMatcher<List<T>>() {241 @Override242 public void describeTo(Description arg0) {243 arg0.appendText("has items ").appendValue(items);244 245 }246 @Override247 public boolean matchesSafely(List<T> arg0) {248 return arg0.containsAll(Arrays.asList(items));249 }250 };251 }252 @Factory253 public static Matcher<List<Object>> containsObjectOfType(final Class<?> cls) {254 return new TypeSafeMatcher<List<Object>>() {255 @Override256 public void describeTo(final Description desc) {257 desc.appendText("contains instance of type " + cls.getName());258 }259 @Override260 public boolean matchesSafely(final List<Object> items) {261 for (final Object object : items) {262 if (cls.isAssignableFrom(object.getClass())) {263 return true;264 }265 }266 return false;267 }268 };269 }270 @Factory271 public static Matcher<String> startsWith(final String expected) {272 return new TypeSafeMatcher<String>() {273 @Override274 public void describeTo(Description description) {275 description.appendText(" starts with '" + expected + "'");276 }277 @Override278 public boolean matchesSafely(String actual) {279 return actual.startsWith(expected);280 }281 };282 }283 @Factory284 public static Matcher<String> contains(final String expected) {285 return new TypeSafeMatcher<String>() {286 @Override287 public void describeTo(Description description) {288 description.appendText(" contains '" + expected + "'");289 }290 @Override291 public boolean matchesSafely(String actual) {292 return actual.contains(expected);293 }294 };295 }296 297 @Factory298 public static Matcher<File> equalsFile(final File file) throws IOException {299 final String canonicalPath = file.getCanonicalPath();300 return new TypeSafeMatcher<File>() {301 @Override302 public void describeTo(Description arg0) {303 arg0.appendText("file '" + canonicalPath + "'");304 }305 @Override306 public boolean matchesSafely(File arg0) {307 try {308 return arg0.getCanonicalPath().equals(canonicalPath);309 } catch (IOException e) {310 return false;311 }312 }313 };314 }315}...
Source:IsisMatchers.java
...30 public boolean matchesSafely(final String actual) {31 return super.matchesSafely(StringExtensions.stripNewLines(actual));32 }33 @Override34 public void describeTo(final Description description) {35 description.appendText("a string (ignoring new lines) containing").appendValue(strippedExpected);36 }37 };38 }39 @Factory40 public static Matcher<String> equalToStripNewLines(final String expected) {41 final String strippedExpected = StringExtensions.stripNewLines(expected);42 return new IsEqual<String>(strippedExpected) {43 @Override44 public boolean matches(final Object actualObj) {45 final String actual = (String) actualObj;46 return super.matches(StringExtensions.stripNewLines(actual));47 }48 @Override49 public void describeTo(final Description description) {50 description.appendText("a string (ignoring new lines) equal to").appendValue(strippedExpected);51 }52 };53 }54 @Factory55 public static StringStartsWith startsWithStripNewLines(final String expected) {56 final String strippedExpected = StringExtensions.stripNewLines(expected);57 return new StringStartsWith(strippedExpected) {58 @Override59 public boolean matchesSafely(final String actual) {60 return super.matchesSafely(StringExtensions.stripNewLines(actual));61 }62 @Override63 public void describeTo(final Description description) {64 description.appendText("a string (ignoring new lines) starting with").appendValue(strippedExpected);65 }66 };67 }68 @Factory69 public static Matcher<String> endsWithStripNewLines(final String expected) {70 final String strippedExpected = StringExtensions.stripNewLines(expected);71 return new StringEndsWith(strippedExpected) {72 @Override73 public boolean matchesSafely(final String actual) {74 return super.matchesSafely(StringExtensions.stripNewLines(actual));75 }76 @Override77 public void describeTo(final Description description) {78 description.appendText("a string (ignoring new lines) ending with").appendValue(strippedExpected);79 }80 };81 }82 @Factory83 public static <T> Matcher<T> anInstanceOf(final Class<T> expected) {84 return new TypeSafeMatcher<T>() {85 @Override86 public boolean matchesSafely(final T actual) {87 return expected.isAssignableFrom(actual.getClass());88 }89 @Override90 public void describeTo(final Description description) {91 description.appendText("an instance of ").appendValue(expected);92 }93 };94 }95 @Factory96 public static Matcher<String> nonEmptyString() {97 return new TypeSafeMatcher<String>() {98 @Override99 public boolean matchesSafely(final String str) {100 return str != null && str.length() > 0;101 }102 @Override103 public void describeTo(final Description description) {104 description.appendText("a non empty string");105 }106 };107 }108 @Factory109 @SuppressWarnings("unchecked")110 public static Matcher<String> nonEmptyStringOrNull() {111 return CoreMatchers.anyOf(nullValue(String.class), nonEmptyString());112 }113 @Factory114 public static Matcher<List<?>> containsElementThat(final Matcher<?> elementMatcher) {115 return new TypeSafeMatcher<List<?>>() {116 @Override117 public boolean matchesSafely(final List<?> list) {118 for (final Object o : list) {119 if (elementMatcher.matches(o)) {120 return true;121 }122 }123 return false;124 }125 @Override126 public void describeTo(final Description description) {127 description.appendText("contains element that ").appendDescriptionOf(elementMatcher);128 }129 };130 }131 @Factory132 public static <T extends Comparable<T>> Matcher<T> greaterThan(final T c) {133 return Matchers.greaterThan(c);134 }135 @Factory136 public static Matcher<Class<?>> classEqualTo(final Class<?> operand) {137 class ClassEqualsMatcher extends TypeSafeMatcher<Class<?>> {138 private final Class<?> clazz;139 public ClassEqualsMatcher(final Class<?> clazz) {140 this.clazz = clazz;141 }142 @Override143 public boolean matchesSafely(final Class<?> arg) {144 return clazz == arg;145 }146 @Override147 public void describeTo(final Description description) {148 description.appendValue(clazz);149 }150 }151 return new ClassEqualsMatcher(operand);152 }153 @Factory154 public static Matcher<File> existsAndNotEmpty() {155 return new TypeSafeMatcher<File>() {156 @Override157 public void describeTo(final Description arg0) {158 arg0.appendText("exists and is not empty");159 }160 @Override161 public boolean matchesSafely(final File f) {162 return f.exists() && f.length() > 0;163 }164 };165 }166 @Factory167 public static Matcher<String> matches(final String regex) {168 return new TypeSafeMatcher<String>() {169 @Override170 public void describeTo(final Description description) {171 description.appendText("string matching " + regex);172 }173 @Override174 public boolean matchesSafely(final String str) {175 return str.matches(regex);176 }177 };178 }179 @Factory180 public static <X> Matcher<Class<X>> anySubclassOf(final Class<X> cls) {181 return new TypeSafeMatcher<Class<X>>() {182 @Override183 public void describeTo(final Description arg0) {184 arg0.appendText("is subclass of ").appendText(cls.getName());185 }186 @Override187 public boolean matchesSafely(final Class<X> item) {188 return cls.isAssignableFrom(item);189 }190 };191 }192 @Factory193 public static <T> Matcher<List<T>> sameContentsAs(final List<T> expected) {194 return new TypeSafeMatcher<List<T>>() {195 @Override196 public void describeTo(final Description description) {197 description.appendText("same sequence as " + expected);198 }199 @Override200 public boolean matchesSafely(final List<T> actual) {201 return actual.containsAll(expected) && expected.containsAll(actual);202 }203 };204 }205 @Factory206 public static <T> Matcher<List<T>> listContaining(final T t) {207 return new TypeSafeMatcher<List<T>>() {208 209 @Override210 public void describeTo(Description arg0) {211 arg0.appendText("list containing ").appendValue(t);212 }213 214 @Override215 public boolean matchesSafely(List<T> arg0) {216 return arg0.contains(t);217 }218 };219 }220 @Factory221 public static <T> Matcher<List<T>> listContainingAll(final T... items) {222 return new TypeSafeMatcher<List<T>>() {223 @Override224 public void describeTo(Description arg0) {225 arg0.appendText("has items ").appendValue(items);226 227 }228 @Override229 public boolean matchesSafely(List<T> arg0) {230 return arg0.containsAll(Arrays.asList(items));231 }232 };233 }234 @Factory235 public static Matcher<List<Object>> containsObjectOfType(final Class<?> cls) {236 return new TypeSafeMatcher<List<Object>>() {237 @Override238 public void describeTo(final Description desc) {239 desc.appendText("contains instance of type " + cls.getName());240 }241 @Override242 public boolean matchesSafely(final List<Object> items) {243 for (final Object object : items) {244 if (cls.isAssignableFrom(object.getClass())) {245 return true;246 }247 }248 return false;249 }250 };251 }252 @Factory253 public static Matcher<String> startsWith(final String expected) {254 return new TypeSafeMatcher<String>() {255 @Override256 public void describeTo(Description description) {257 description.appendText(" starts with '" + expected + "'");258 }259 @Override260 public boolean matchesSafely(String actual) {261 return actual.startsWith(expected);262 }263 };264 }265 @Factory266 public static Matcher<String> contains(final String expected) {267 return new TypeSafeMatcher<String>() {268 @Override269 public void describeTo(Description description) {270 description.appendText(" contains '" + expected + "'");271 }272 @Override273 public boolean matchesSafely(String actual) {274 return actual.contains(expected);275 }276 };277 }278 279 @Factory280 public static Matcher<File> equalsFile(final File file) throws IOException {281 final String canonicalPath = file.getCanonicalPath();282 return new TypeSafeMatcher<File>() {283 @Override284 public void describeTo(Description arg0) {285 arg0.appendText("file '" + canonicalPath + "'");286 }287 @Override288 public boolean matchesSafely(File arg0) {289 try {290 return arg0.getCanonicalPath().equals(canonicalPath);291 } catch (IOException e) {292 return false;293 }294 }295 };296 }297}...
Source:NofMatchers.java
...34 return super.matchesSafely(StringUtils.stripNewLines(actual));35 }3637 @Override38 public void describeTo(final Description description) {39 description.appendText("a string (ignoring new lines) containing").appendValue(strippedExpected);40 }41 };42 }4344 @Factory45 public static Matcher<String> equalToStripNewLines(final String expected) {46 final String strippedExpected = StringUtils.stripNewLines(expected);47 return new IsEqual<String>(strippedExpected) {48 @Override49 public boolean matches(final Object actualObj) {50 final String actual = (String) actualObj;51 return super.matches(StringUtils.stripNewLines(actual));52 }5354 @Override55 public void describeTo(final Description description) {56 description.appendText("a string (ignoring new lines) equal to").appendValue(strippedExpected);57 }58 };59 }6061 @Factory62 public static Matcher<String> startsWithStripNewLines(final String expected) {63 final String strippedExpected = StringUtils.stripNewLines(expected);64 return new StringStartsWith(strippedExpected) {65 @Override66 public boolean matchesSafely(final String actual) {67 return super.matchesSafely(StringUtils.stripNewLines(actual));68 }6970 @Override71 public void describeTo(final Description description) {72 description.appendText("a string (ignoring new lines) starting with").appendValue(strippedExpected);73 }74 };75 }7677 @Factory78 public static Matcher<String> endsWithStripNewLines(final String expected) {79 final String strippedExpected = StringUtils.stripNewLines(expected);80 return new StringEndsWith(strippedExpected) {81 @Override82 public boolean matchesSafely(final String actual) {83 return super.matchesSafely(StringUtils.stripNewLines(actual));84 }8586 @Override87 public void describeTo(final Description description) {88 description.appendText("a string (ignoring new lines) ending with").appendValue(strippedExpected);89 }90 };91 }9293 public static <T> Matcher<T> anInstanceOf(final Class<T> expected) {94 return new TypeSafeMatcher<T>() {95 @Override96 public boolean matchesSafely(final T actual) {97 return expected.isAssignableFrom(actual.getClass());98 }99100 public void describeTo(final Description description) {101 description.appendText("an instance of ").appendValue(expected);102 }103 };104 }105106 @Factory107 public static Matcher<String> nonEmptyString() {108 return new TypeSafeMatcher<String>() {109 @Override110 public boolean matchesSafely(String str) {111 return str != null && str.length() > 0;112 }113114 public void describeTo(Description description) {115 description.appendText("a non empty string");116 }117 118 };119 }120121 @Factory122 @SuppressWarnings("unchecked")123 public static Matcher<String> nonEmptyStringOrNull() {124 return CoreMatchers.anyOf(nullValue(String.class), nonEmptyString());125 }126127 128 public static Matcher<List<?>> containsElementThat(final Matcher<?> elementMatcher) {129 return new TypeSafeMatcher<List<?>>() {130 public boolean matchesSafely(List<?> list) {131 for(Object o: list) {132 if (elementMatcher.matches(o)) {133 return true;134 }135 }136 return false;137 }138139 public void describeTo(Description description) {140 description.appendText("contains element that ").appendDescriptionOf(elementMatcher);141 }142 };143 }144145146 @Factory147 public static <T extends Comparable<T>> Matcher<T> greaterThan(T c) {148 return new IsGreaterThan<T>(c);149 }150151152 @Factory153 public static Matcher<Class<?>> classEqualTo(final Class<?> operand) {154155 class ClassEqualsMatcher extends TypeSafeMatcher<Class<?>> {156 private final Class<?> clazz;157 public ClassEqualsMatcher(final Class<?> clazz) {158 this.clazz = clazz;159 }160161 @Override162 public boolean matchesSafely(final Class<?> arg) {163 return clazz == arg;164 }165166 public void describeTo(final Description description) {167 description.appendValue(clazz);168 }169 }170171 return new ClassEqualsMatcher(operand);172 }173 174}
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Source:GameMatchers.java
...16 final PlayerResponse response = (PlayerResponse) item;17 return hasItem(searchedEvent).matches(response.getPlayerEvents());18 }19 @Override20 public void describeTo(Description description) {21 description.appendText("Expected player event list to contain event equal to \"" + searchedEvent + "\" but couldn't find it");22 }23 };24 }25 default Matcher<PlayerResponse> hasNoEvent(String searchedEvent) {26 return new BaseMatcher<PlayerResponse>() {27 @Override28 public boolean matches(Object item) {29 final PlayerResponse response = (PlayerResponse) item;30 return not(hasItem(searchedEvent)).matches(response.getPlayerEvents());31 }32 @Override33 public void describeTo(Description description) {34 description.appendText("Expected player event list not to contain event equal to \"" + searchedEvent + "\" but the event was found");35 }36 };37 }38 default Matcher<PlayerResponse> hasEventLike(String partOfSearchedEvent) {39 return new BaseMatcher<PlayerResponse>() {40 @Override41 public boolean matches(Object item) {42 final PlayerResponse response = (PlayerResponse) item;43 return hasItem(containsString(partOfSearchedEvent))44 .matches(response.getPlayerEvents());45 }46 @Override47 public void describeTo(Description description) {48 description.appendText("Expected player event list to contain event like \"" + partOfSearchedEvent + "\" but couldn't find it");49 }50 };51 }52 default Matcher<PlayerResponse> hasNoEvents() {53 return new BaseMatcher<PlayerResponse>() {54 int amountOf;55 @Override56 public boolean matches(Object item) {57 final PlayerResponse response = (PlayerResponse) item;58 amountOf = response.getPlayerEvents().size();59 return hasSize(0).matches(response.getPlayerEvents());60 }61 @Override62 public void describeTo(Description description) {63 description.appendText("Expected empty player event list but has " + amountOf + " events");64 }65 };66 }67 default Matcher<Player> hasEmptyBackpack() {68 return hasThisManyItemsInBackpack(0);69 }70 default Matcher<Player> hasThisManyItemsInBackpack(int expectedAmount) {71 return new BaseMatcher<Player>() {72 int backpackSize;73 @Override74 public boolean matches(Object item) {75 final Player player = (Player) item;76 backpackSize = player.getEquipment().getBackpack().size();77 return hasSize(expectedAmount).matches(player.getEquipment().getBackpack());78 }79 @Override80 public void describeTo(Description description) {81 description.appendText("Expected player with " + expectedAmount + " items in backpack but he has " + backpackSize + " items in it");82 }83 };84 }85}...
Source:FluentAttributeMatcher__28__MultipleAttributesFailAndDescribe.java
...78 m2.matches(this.input.getInteger());79 m3.matches(this.input.getO23());80 m4.matches(this.input.isBool());81 final StringDescription d = new StringDescription();82 m1.describeTo(d);83 m2.describeTo(d);84 m3.describeTo(d);85 m4.describeTo(d);86 return d.toString();87 }88}...
Source:HamcrestAdapter.java
...4142 return result == null || result;43 }4445 public void describeTo(org.hamcrest.Description description)46 {47 }48 };49 }5051 return new HamcrestAdapter<T>(hamcrestMatcher);52 }5354 private HamcrestAdapter(org.hamcrest.Matcher<T> matcher)55 {56 hamcrestMatcher = matcher;57 }5859 public boolean matches(Object item)60 {61 return hamcrestMatcher.matches(item);62 }6364 public void describeTo(Description description)65 {66 org.hamcrest.Description strDescription = new org.hamcrest.StringDescription();67 hamcrestMatcher.describeTo(strDescription);68 description.appendText(strDescription.toString());69 }7071 public Object getInnerValue()72 {73 Object innermostMatcher = getInnermostMatcher();7475 return getArgumentValueFromMatcherIfAvailable(innermostMatcher);76 }7778 private Object getInnermostMatcher()79 {80 org.hamcrest.Matcher<T> innerMatcher = hamcrestMatcher;81
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Source:Behaviour.java
...60 public boolean matchesSafely(T item) {61 return compareTo.compareTo(item) <= 0;62 }63 64 public void describeTo(Description description) {65 description.appendText("a value greater than ");66 description.appendValue(compareTo);67 }68 }69 70 public class IsLessThan<T extends Comparable<T>> extends TypeSafeMatcher<T> {71 private final Comparable<T> compareTo;72 73 public IsLessThan(Comparable<T> compareTo) {74 this.compareTo = compareTo;75 }76 77 public boolean matchesSafely(T item) {78 return compareTo.compareTo(item) > 0;79 }80 81 public void describeTo(Description description) {82 description.appendText("a value greater than ");83 description.appendValue(compareTo);84 }85 }86}...
Source:IsMapContainingSingleton.java
...29 }30 return false;31 }32 @Override33 public void describeTo(Description description) {34 description.appendText("map containing unique entry [");35 keyMatcher.describeTo(description);36 description.appendText("->");37 valueMatcher.describeTo(description);38 description.appendText("]");39 }40 41 @Factory42 public static Matcher<Map<?, ?>> hasSingleEntry(Matcher<?> keyMatcher, Matcher<?> valueMatcher){43 return new IsMapContainingSingleton(keyMatcher, valueMatcher);44 }45 46 @Factory47 public static Matcher<Map<?, ?>> hasSingleEntry(Entry<?, ?> entry){48 return hasSingleEntry(entry.getKey(), entry.getValue());49 }50 51 @Factory...
describeTo
Using AI Code Generation
1import org.hamcrest.core.Is2import org.hamcrest.Matcher3import org.hamcrest.Description4import org.hamcrest.StringDescription5def matcher = new Is([1, 2, 3])6def description = new StringDescription()7matcher.describeTo(description)8println description.toString()
describeTo
Using AI Code Generation
1import org.hamcrest.core.Is2import spock.lang.Specification3class IsTest extends Specification {4 def "IsTest"() {5 }6}7import org.hamcrest.core.Is8import spock.lang.Specification9class IsTest extends Specification {10 def "IsTest"() {11 }12}13import org.hamcrest.core.Is14import spock.lang.Specification15class IsTest extends Specification {16 def "IsTest"() {17 }18}
describeTo
Using AI Code Generation
1assertThat("Hello World", is(equalTo("Hello World")));2assertThat("Hello World", is(equalTo("Hello World")));3assertThat("Hello World", is(equalTo("Hello World")));4assertThat("Hello World", is(equalTo("Hello World")));5assertThat("Hello World", is(equalTo("Hello World")));6assertThat("Hello World", is(equalTo("Hello World")));7assertThat("Hello World", is(equalTo("Hello World")));8assertThat("Hello World", is(equalTo("Hello World")));9assertThat("Hello World", is(equalTo("Hello World")));10assertThat("Hello World", is(equalTo("Hello World")));11assertThat("Hello World", is(equalTo("Hello World")));12assertThat("Hello World", is(equalTo("Hello World")));13assertThat("Hello
describeTo
Using AI Code Generation
1import org.hamcrest.core.Is2import org.hamcrest.Matcher3def "should use describeTo method of Is class"() {4 def matcher = Is.is("Hello World")5 matcher.describeTo(new StringDescription()) == "is \"Hello World\""6}7import org.hamcrest.core.IsEqual8import org.hamcrest.Matcher9def "should use describeTo method of IsEqual class"() {10 def matcher = IsEqual.equalTo("Hello World")11 matcher.describeTo(new StringDescription()) == "is \"Hello World\""12}13import org.hamcrest.core.IsSame14import org.hamcrest.Matcher15def "should use describeTo method of IsSame class"() {16 def matcher = IsSame.sameInstance("Hello World")17 matcher.describeTo(new StringDescription()) == "is the same instance as \"Hello World\""18}19import org.hamcrest.core.IsNot20import org.hamcrest.Matcher21def "should use describeTo method of IsNot class"() {22 def matcher = IsNot.not("Hello World")23 matcher.describeTo(new StringDescription()) == "not \"Hello World\""24}25import org.hamcrest.core.IsNull26import org.hamcrest.Matcher27def "should use describeTo method of IsNull class"() {28 def matcher = IsNull.nullValue()29 matcher.describeTo(new StringDescription()) == "null"30}31import org.hamcrest.core.IsInstanceOf32import org.hamcrest.Matcher33def "should use describeTo method of IsInstanceOf class"() {34 def matcher = IsInstanceOf.instanceOf(String)35 matcher.describeTo(new StringDescription()) == "an instance of java.lang.String"36}37import org.hamcrest.core.IsCollectionContaining38import org.hamcrest.Matcher39def "should use describeTo method of IsCollectionContaining class"() {40 def matcher = IsCollectionContaining.hasItem("Hello World")41 matcher.describeTo(new StringDescription())
describeTo
Using AI Code Generation
1org.hamcrest.core.Is matcher = new org.hamcrest.core.Is(new org.hamcrest.core.IsEqual("Hello World!"))2matcher.describeTo(System.out)3org.hamcrest.core.Is matcher = new org.hamcrest.core.Is(new org.hamcrest.core.IsEqual("Hello World!"))4System.out.println(matcher.toString())5org.hamcrest.core.Is matcher = new org.hamcrest.core.Is(new org.hamcrest.core.IsEqual("Hello World!"))6matcher.describeMismatch("Hello World!", System.out)7org.hamcrest.core.Is matcher = new org.hamcrest.core.Is(new org.hamcrest.core.IsEqual("Hello World!"))8System.out.println(matcher.matches("Hello World!"))9org.hamcrest.core.Is matcher = new org.hamcrest.core.Is(new org.hamcrest.core.IsEqual("Hello World!"))10System.out.println(matcher.matchesSafely("Hello World!"))11org.hamcrest.core.Is matcher = new org.hamcrest.core.Is(new org.hamcrest.core.IsEqual("Hello World!"))12matcher.describeMismatchSafely("Hello World!", System.out)
describeTo
Using AI Code Generation
1import org.hamcrest.core.Is2import org.hamcrest.core.Is.*3import org.hamcrest.MatcherAssert.*4import org.hamcrest.Description5import org.hamcrest.StringDescription6def matcher = Is("some text")7def description = new StringDescription()8matcher.describeTo(description)9println description.toString()10import org.hamcrest.core.Is11import org.hamcrest.core.Is.*12import org.hamcrest.MatcherAssert.*13import org.hamcrest.Description14import org.hamcrest.StringDescription15def matcher = Is("some text")16def description = new StringDescription()17matcher.describeMismatch("some text", description)18println description.toString()19import org.hamcrest.core.Is20import org.hamcrest.core.Is.*21import org.hamcrest.MatcherAssert.*22import org.hamcrest.Description23import org.hamcrest.StringDescription24def matcher = Is("some text")25assertThat "some text", equalTo("some text")26import org.hamcrest.core.Is27import org.hamcrest.core.Is.*28import org.hamcrest.MatcherAssert.*29import org.hamcrest.Description30import org.hamcrest.StringDescription31def matcher = Is("some text")32assertThat "some text", is("some text")
describeTo
Using AI Code Generation
1import org.hamcrest.Description;2import org.hamcrest.TypeSafeMatcher;3public class PalindromeMatcher extends TypeSafeMatcher<String>{4 public void describeTo(Description description) {5 description.appendText("palindrome");6 }7 public boolean matchesSafely(String item) {8 return item.equals(new StringBuilder(item).reverse().toString());9 }10}11import org.junit.Test;12import static org.hamcrest.MatcherAssert.assertThat;13import static org.hamcrest.Matchers.*;14public class PalindromeTest {15 public void testPalindrome() {16 assertThat("abba", is(new PalindromeMatcher()));17 assertThat("abba", is(new PalindromeMatcher()));18 assertThat("abc", is(not(new PalindromeMatcher())));19 }20}
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.
JUnit Certification:
You can also check out our JUnit certification if you wish to take your career in Selenium automation testing with JUnit to the next level.
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