Best junit code snippet using org.hamcrest.Interface Matcher.describeMismatch
...46 private class IntMatcherFromInterface extends BaseMatcher<Integer> {47 public boolean matches(Object o) {48 return true;49 }50 public void describeMismatch(Object item, Description mismatchDescription) {}51 public void describeTo(Description description) {}52 }53 //Static Matcher interface implementation (instead of the BaseMatcher)54 private static class StaticIntMatcherFromInterface extends BaseMatcher<Integer> {55 public boolean matches(Object o) {56 return true;57 }58 public void describeMismatch(Object item, Description mismatchDescription) {}59 public void describeTo(Description description) {}60 }61 //non-generic matcher implementing the interface62 @SuppressWarnings("rawtypes")63 private static class NonGenericMatcherFromInterface extends BaseMatcher {64 public boolean matches(Object o) {65 return true;66 }67 public void describeMismatch(Object item, Description mismatchDescription) {}68 public void describeTo(Description description) {}69 }70 private interface IMatcher extends Matcher<Integer> {}71 //non-generic matcher implementing the interface72 private static class SubclassGenericMatcherFromInterface extends BaseMatcher<Integer> implements Serializable, Cloneable, IMatcher {73 public boolean matches(Object o) {74 return true;75 }76 public void describeMismatch(Object item, Description mismatchDescription) {}77 public void describeTo(Description description) {}78 }79 //I refuse to comment on the sanity of this case80 private static class InsaneEdgeCase extends SubclassGenericMatcherFromInterface {}81 @Test82 public void findsGenericType() {83 assertEquals(Integer.class, genericTypeOfMatcher(IntMatcher.class));84 assertEquals(Integer.class, genericTypeOfMatcher(StaticIntMatcher.class));85 assertEquals(Integer.class, genericTypeOfMatcher(IntMatcherFromInterface.class));86 assertEquals(Integer.class, genericTypeOfMatcher(StaticIntMatcherSubclass.class));87 assertEquals(Integer.class, genericTypeOfMatcher(IntMatcherFromInterface.class));88 assertEquals(Integer.class, genericTypeOfMatcher(StaticIntMatcherFromInterface.class));89 assertEquals(Integer.class, genericTypeOfMatcher(SubclassGenericMatcherFromInterface.class));90 assertEquals(Integer.class, genericTypeOfMatcher(InsaneEdgeCase.class));91 assertEquals(Integer.class, genericTypeOfMatcher(new BaseMatcher<Integer>() {92 public void describeTo(Description description) {93 }94 public boolean matches(Object o) {95 return false;96 }97 }.getClass()));98 assertEquals(Integer.class, genericTypeOfMatcher(new BaseMatcher<Integer>() {99 public void describeTo(Description description) {100 }101 public boolean matches(Object o) {102 return false;103 }104 public void describeMismatch(Object item, Description mismatchDescription) {105 }106 }.getClass()));107 assertEquals(Object.class, genericTypeOfMatcher(Object.class));108 assertEquals(Object.class, genericTypeOfMatcher(String.class));109 assertEquals(Object.class, genericTypeOfMatcher(HashMap.class));110 assertEquals(Object.class, genericTypeOfMatcher(new HashMap<String, String>() {111 }.getClass()));112 assertEquals(Object.class, genericTypeOfMatcher(NonGenericMatcher.class));113 assertEquals(Object.class, genericTypeOfMatcher(NonGenericMatcherFromInterface.class));114 }115}...
Source: QuickMatcherBase.java
...16 * <pre>{@code 17 * if (matches(item)) {18 * return true;19 * } else {20 * describeMismatch(item, description);21 * return false;22 * }23 * }</pre>24 * <p>25 * If you want to override {@link #matches(java.lang.Object, org.hamcrest.Description)},26 * extend {@link QuickDiagnosingMatcherBase} instead.27 * @param <T>28 */29public abstract class QuickMatcherBase<T> 30 extends BaseMatcher<T> 31 implements QuickDiagnosingMatcher<T> {3233 /** {@inheritDoc} */34 @Override35 public abstract boolean matches(Object item);3637 /** {@inheritDoc} */38 @Override39 public abstract void describeMismatch(Object item, Description description);4041 /**42 * <pre>{@code 43 * if (matches(item)) {44 * return true;45 * } else {46 * describeMismatch(item, description);47 * return false;48 * }49 * }</pre>50 * @param item51 * @param mismatch52 * @return match 53 */54 @Override55 public final boolean matches(Object item, Description mismatch) {56 if (matches(item)) {57 return true;58 } else {59 describeMismatch(item, mismatch);60 return false;61 }62 }6364 @Override65 public <I> MatchResult<I> matchResult(I item) {66 StringDescription mismatch = new StringDescription();67 if (matches(item, mismatch)) {68 return new MatchResultSuccess<>(item, this);69 } else {70 return new MatchResultMismatch<>(item, this, mismatch.toString());71 }72 }73}
...
Source: MatcherTestUtils.java
...18 matcher.describeTo(description);19 return description.toString();20 }21 /**22 * Shorthand function to calling {@link Matcher#describeMismatch(Object, Description)} and getting23 * the String representation of that description.24 *25 * @param matcher The matcher which we want the mismatch description for.26 * @param actual The actual value that triggered the mismatch.27 * @return The string set by {@link Matcher#describeMismatch(Object, Description)}.28 */29 public static String getMismatchDescription(Matcher<?> matcher, Object actual) {30 Description description = new StringDescription();31 matcher.describeMismatch(actual, description);32 return description.toString();33 }34 /** Object transformer used for various overloads of the {@code join} method. */35 interface Transformer<F, T> {36 T transform(F original);37 }38 /**39 * Similar implementation to {@link android.text.TextUtils#join(CharSequence, Object[])} but40 * allows for object transformations on each element.41 */42 public static <T> String join(CharSequence delimiter, T[] tokens, Transformer<T, ?> transformer) {43 StringBuilder sb = new StringBuilder();44 for (int i = 0; i < tokens.length; ++i) {45 if (i != 0) {...
Source: DescribingMatcher.java
...15 //---------------------------------------------------------------------16 // Static definitions, members, initialization and constructors17 //---------------------------------------------------------------------18 private DescribeTo describeTo;19 private DescribeMismatch describeMismatch;20 DescribingMatcher()21 {22 super();23 }24 //endregion25 @Override26 public final void describeTo( Description description )27 {28 describeTo.describeTo( description );29 }30 @Override31 protected final void describeMismatchSafely( T item, Description mismatchDescription )32 {33 describeMismatch.describeMismatch( mismatchDescription );34 }35 protected final void assignDescribers( DescribingMatcher.DescribeTo describeTo,36 DescribingMatcher.DescribeMismatch describeMismatch )37 {38 this.describeTo = describeTo;39 this.describeMismatch = describeMismatch;40 }41 protected interface DescribeTo42 {43 void describeTo( Description description );44 }45 protected interface DescribeMismatch46 {47 void describeMismatch( Description description );48 }49}...
describeMismatch
Using AI Code Generation
1import org.hamcrest.Description;2import org.hamcrest.Matcher;3import org.hamcrest.TypeSafeMatcher;4public class MyMatcher extends TypeSafeMatcher<String> {5 public void describeTo(Description description) {6 description.appendText("MyMatcher");7 }8 protected boolean matchesSafely(String item) {9 return true;10 }11 protected void describeMismatchSafely(String item, Description mismatchDescription) {12 mismatchDescription.appendText("MyMatcher mismatch");13 }14}15public class MyMatcherTest {16 public void testMyMatcher() {17 Matcher<String> myMatcher = new MyMatcher();18 assertThat("test", myMatcher);19 }20}21import static org.hamcrest.CoreMatchers.*;22import static org.hamcrest.MatcherAssert.assertThat;23public class MyMatcherTest {24 public void testMyMatcher() {25 Matcher<String> myMatcher = (s) -> s.length() > 3;26 assertThat("test", myMatcher);27 }28}29import static org.hamcrest.CoreMatchers.*;30import static org.hamcrest.MatcherAssert.assertThat;31public class MyMatcherTest {32 public void testMyMatcher() {33 Matcher<String> myMatcher = equalTo("test");34 assertThat("test", myMatcher);35 }36}37import static org.hamcrest.CoreMatchers.*;38import static org.hamcrest.MatcherAssert.assertThat;39public class MyMatcherTest {
describeMismatch
Using AI Code Generation
1Matcher<T> {2 public void describeMismatch(Object item, Description mismatchDescription) {3 mismatchDescription.appendText("was ").appendValue(item);4 }5}6 public void describeMismatchSafely(T item, Description mismatchDescription) {7 mismatchDescription.appendText("was ").appendValue(item);8 }9}10 public void describeMismatchSafely(T item, Description mismatchDescription) {11 mismatchDescription.appendText("was ").appendValue(item);12 }13}14 public void describeMismatchSafely(T item, Description mismatchDescription) {15 mismatchDescription.appendText("was ").appendValue(item);16 }17}18 public void describeMismatchSafely(T item, Description mismatchDescription) {19 mismatchDescription.appendText("was ").appendValue(item);20 }21}22 public void describeMismatchSafely(T item, Description mismatchDescription) {23 mismatchDescription.appendText("was ").appendValue(item);24 }25}26 public void describeMismatchSafely(T item, Description mismatchDescription) {27 mismatchDescription.appendText("was ").appendValue(item);28 }29}30 public void describeMismatchSafely(T item, Description mismatchDescription) {31 mismatchDescription.appendText("was ").appendValue(item);32 }33}
describeMismatch
Using AI Code Generation
1import org.hamcrest.Description;2import org.hamcrest.Matcher;3import org.hamcrest.TypeSafeDiagnosingMatcher;4public class IsIn<T> extends TypeSafeDiagnosingMatcher<Iterable<? super T>> {5 private final Matcher<? super T> elementMatcher;6 public static <T> Matcher<Iterable<? super T>> isIn(Matcher<? super T> elementMatcher) {7 return new IsIn<T>(elementMatcher);8 }9 public IsIn(Matcher<? super T> elementMatcher) {10 this.elementMatcher = elementMatcher;11 }12 public void describeTo(Description description) {13 description.appendText("an iterable containing ").appendDescriptionOf(elementMatcher);14 }15 protected boolean matchesSafely(Iterable<? super T> item, Description mismatchDescription) {16 for (Object actualElement : item) {17 if (elementMatcher.matches(actualElement)) {18 return true;19 }20 }21 mismatchDescription.appendText("no item in iterable ");22 elementMatcher.describeMismatch(item, mismatchDescription);23 return false;24 }25}26import static org.hamcrest.MatcherAssert.assertThat;27import static org.hamcrest
describeMismatch
Using AI Code Generation
1import org.hamcrest.Matcher2import org.hamcrest.StringDescription3import org.hamcrest.core.IsEqual4import org.hamcrest.core.IsNot5def matcher = new IsEqual(expectedValue)6def mismatchDescription = new StringDescription()7matcher.describeMismatch(actualValue, mismatchDescription)8println mismatchDescription.toString()9def matcher = new IsNot(expectedValue)10def mismatchDescription = new StringDescription()11matcher.describeMismatch(actualValue, mismatchDescription)12println mismatchDescription.toString()13import org.hamcrest.Matcher14import org.hamcrest.StringDescription15import org.hamcrest.core.IsEqual16import org.hamcrest.core.IsNot17def matcher = new IsEqual(expectedValue)18def mismatchDescription = new StringDescription()19matcher.describeMismatch(actualValue, mismatchDescription)20println mismatchDescription.toString()21def matcher = new IsNot(expectedValue)22def mismatchDescription = new StringDescription()23matcher.describeMismatch(actualValue, mismatchDescription)24println mismatchDescription.toString()25import org.hamcrest.Matcher26import org.hamcrest.StringDescription27import org.hamcrest.core.IsEqual28import org.hamcrest.core.IsNot29def matcher = new IsEqual(expectedValue)30def mismatchDescription = new StringDescription()31matcher.describeMismatch(actualValue, mismatchDescription)32println mismatchDescription.toString()33def matcher = new IsNot(expectedValue)34def mismatchDescription = new StringDescription()35matcher.describeMismatch(actualValue, mismatchDescription)36println mismatchDescription.toString()37import org.hamcrest.Matcher38import org.hamcrest.StringDescription39import org.hamcrest.core.IsEqual40import org.hamcrest.core.IsNot41def matcher = new IsEqual(expectedValue)42def mismatchDescription = new StringDescription()43matcher.describeMismatch(actualValue, mismatchDescription)
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