Best junit code snippet using org.hamcrest.BaseMatcher.describeMismatch
Source: FileMatchers.java
...49 public void describeTo(Description description) {50 description.appendText("file that exists");51 }52 @Override53 public void describeMismatch(Object item, Description description) {54 if (item instanceof File) {55 description.appendValue(item);56 description.appendText(" does not exist");57 } else {58 description.appendValue(item);59 description.appendText(" was not a File object");60 }61 }62 };63 }64 /** Matcher for a regular (non-directory) file */65 public static Matcher<File> file() {66 return new BaseMatcher<File>() {67 @Override68 public boolean matches(Object item) {69 if (item instanceof File) {70 return ((File) item).isFile();71 } else {72 return false;73 }74 }75 @Override76 public void describeTo(Description description) {77 description.appendText("file that is a file (Not a directory)");78 }79 @Override80 public void describeMismatch(Object item, Description description) {81 if (item instanceof File) {82 if (((File) item).exists()) {83 description.appendValue(item);84 description.appendText(" is a directory");85 } else {86 description.appendValue(item);87 description.appendText(" does not exist");88 }89 } else {90 description.appendValue(item);91 description.appendText(" was not a File object");92 }93 }94 };95 }96 /** Matcher for a directory */97 public static Matcher<File> directory() {98 return new BaseMatcher<File>() {99 @Override100 public boolean matches(Object item) {101 if (item instanceof File) {102 return ((File) item).isDirectory();103 } else {104 return false;105 }106 }107 @Override108 public void describeTo(Description description) {109 description.appendText("file that is a directory");110 }111 @Override112 public void describeMismatch(Object item, Description description) {113 if (item instanceof File) {114 if (((File) item).exists()) {115 description.appendValue(item);116 description.appendText(" is not a directory");117 } else {118 description.appendValue(item);119 description.appendText(" does not exist");120 }121 } else {122 description.appendValue(item);123 description.appendText(" was not a File object");124 }125 }126 };127 }128 /** Matcher for a directory's contents */129 public static Matcher<File> directoryContaining(Matcher<Iterable<File>> filesMatcher) {130 return new BaseMatcher<File>() {131 @Override132 public boolean matches(Object item) {133 if (item instanceof File) {134 return ((File) item).isDirectory()135 && filesMatcher.matches(Arrays.asList(((File) item).listFiles()));136 } else {137 return false;138 }139 }140 @Override141 public void describeTo(Description description) {142 description.appendText("directory that contains ");143 description.appendDescriptionOf(filesMatcher);144 }145 @Override146 public void describeMismatch(Object item, Description description) {147 if (!(item instanceof File)) {148 description.appendValue(item);149 description.appendText(" was not a File object");150 } else if (!((File) item).exists()) {151 description.appendValue(item);152 description.appendText(" does not exist");153 } else if (!((File) item).isDirectory()) {154 description.appendValue(item);155 description.appendText(" is not a directory");156 } else {157 description.appendValue(item);158 description.appendText(" had files ");159 filesMatcher.describeMismatch(((File) item).listFiles(), description);160 }161 }162 };163 }164 public static Matcher<File> directoryEmpty() {165 return directoryContaining(Matchers.emptyIterableOf(File.class));166 }167 /** Matcher for last modified time */168 public static Matcher<File> lastModified(final Matcher<Long> timeMatcher) {169 return new BaseMatcher<File>() {170 @Override171 public boolean matches(Object item) {172 if (item instanceof File) {173 return timeMatcher.matches(((File) item).lastModified());174 } else {175 return false;176 }177 }178 @Override179 public void describeTo(Description description) {180 description.appendText("file last modified ");181 description.appendDescriptionOf(timeMatcher);182 }183 @Override184 public void describeMismatch(Object item, Description description) {185 if (item instanceof File) {186 if (((File) item).exists()) {187 description.appendValue(item);188 description.appendText(" had modification time ");189 timeMatcher.describeMismatch(((File) item).lastModified(), description);190 } else {191 description.appendValue(item);192 description.appendText(" does not exist");193 }194 } else {195 description.appendValue(item);196 description.appendText(" was not a File object");197 }198 }199 };200 }201 /** Matcher for file with a particular name */202 @SuppressWarnings("unchecked")203 public static Matcher<File> named(String name) {204 return both(instanceOf(File.class)).and((Matcher) hasProperty("name", equalTo(name)));205 }206 /**207 * Executes the given {@link Callable} and then returns a matcher for values of {@link208 * System#currentTimeMillis()} during the execution.209 */210 public static Matcher<Long> whileRunning(Callable<Void> stuffToDo) throws Exception {211 final long start = System.currentTimeMillis();212 stuffToDo.call();213 final long end = System.currentTimeMillis();214 return both(greaterThan(start)).and(lessThan(end));215 }216 public static Matcher<Resource> resource(final Resource expected) {217 return new BaseMatcher<Resource>() {218 @Override219 public boolean matches(Object item) {220 if (item instanceof Resource) {221 try (InputStream itemStream = ((Resource) item).getInputStream();222 InputStream expectedStream = expected.getInputStream(); ) {223 return IOUtils.contentEquals(itemStream, expectedStream);224 } catch (IOException e) {225 return false;226 }227 } else {228 return false;229 }230 }231 @Override232 public void describeTo(Description description) {233 description.appendText("Resource with content equal to that given");234 }235 @Override236 public void describeMismatch(Object item, Description description) {237 if (item instanceof Resource) {238 description.appendText("did not match given Resource");239 } else {240 description.appendText("was not a Resource");241 }242 }243 };244 }245}...
...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: Matchers.java
...47 description.appendText(currentTime.toString());48 }4950 @Override51 public void describeMismatch(Object item, Description description) {52 Date date = (Date) item;53 description54 .appendText(Long.toString(date.getTime()))55 .appendText(" (").appendText(Long.toString(abs(date.getTime() - currentTime)))56 .appendText(" ms)");57 }58 };59 }6061 public static org.hamcrest.Matcher<Long> equalToWithin(long expectedValue, long precision) {62 return new BaseMatcher<Long>() {6364 @Override65 public boolean matches(Object item) {66 Long value = (Long) item;67 long difference = value - expectedValue;68 return abs(difference) <= precision;69 }7071 @Override72 public void describeTo(Description description) {73 description.appendText(Long.toString(expectedValue));74 }7576 @Override77 public void describeMismatch(Object item, Description description) {78 Long value = (Long) item;79 description80 .appendText(Long.toString(value))81 .appendText(" (").appendText(Long.toString(abs(value - expectedValue)))82 .appendText(")");83 }84 };85 }8687 public static <T> org.hamcrest.Matcher<Observable<T>> hasOnlyOneItem() {88 return hasOnlyOneItem(null, item -> true);89 }9091 @SuppressWarnings("WeakerAccess")92 public static <T> org.hamcrest.Matcher<Observable<T>> hasOnlyOneItem(String descr, Func1<? super T, Boolean> predicate) {93 return new BaseMatcher<Observable<T>>() {94 @Override95 public boolean matches(Object item) {96 List<T> list = getList(item);97 System.out.println(list);98 return list.size() == 1;99 }100101 @Override102 public void describeTo(Description description) {103 description.appendText("only one item");104 if (descr != null)105 description.appendText(" ").appendText(descr);106 }107108 @Override109 public void describeMismatch(Object item, Description description) {110 List<T> list = getList(item);111 description.appendText(list.toString());112 }113114 private List<T> getList(Object item) {115 //noinspection unchecked116 Observable<T> observable = (Observable<T>) item;117 return observable.filter(predicate).toList().toBlocking().single();118 }119 };120 }121}
...
Source: StartMatchers.java
...39 description.appendText("Path should exist");40 }41 42 @Override43 public void describeMismatch(Object item, Description description)44 {45 description.appendText("Path did not exist ").appendValue(item);46 }47 };48 }49 50 public static Matcher<Path> notPathExists()51 {52 return new BaseMatcher<Path>()53 {54 @Override55 public boolean matches(Object item)56 {57 final Path path = (Path)item;58 return !Files.exists(path);59 }60 @Override61 public void describeTo(Description description)62 {63 description.appendText("Path should not exist");64 }65 66 @Override67 public void describeMismatch(Object item, Description description)68 {69 description.appendText("Path exists ").appendValue(item);70 }71 };72 }73 74 public static Matcher<Path> fileExists()75 {76 return new BaseMatcher<Path>()77 {78 @Override79 public boolean matches(Object item)80 {81 final Path path = (Path)item;82 return Files.exists(path) && Files.isRegularFile(path);83 }84 @Override85 public void describeTo(Description description)86 {87 description.appendText("File should exist");88 }89 90 @Override91 public void describeMismatch(Object item, Description description)92 {93 description.appendText("File did not exist ").appendValue(item);94 }95 };96 }97}
Source: DescribedAs.java
...30 description.appendText(this.descriptionTemplate.substring(textStart));31 }32 }33 @Override // org.hamcrest.BaseMatcher, org.hamcrest.Matcher34 public void describeMismatch(Object item, Description description) {35 this.matcher.describeMismatch(item, description);36 }37 public static <T> Matcher<T> describedAs(String description, Matcher<T> matcher2, Object... values2) {38 return new DescribedAs(description, matcher2, values2);39 }40}...
Source: TypeSafeMatcher.java
...14 protected TypeSafeMatcher(ReflectiveTypeFinder typeFinder) {15 this.expectedType = typeFinder.findExpectedType(getClass());16 }17 /* access modifiers changed from: protected */18 public void describeMismatchSafely(T item, Description mismatchDescription) {19 super.describeMismatch(item, mismatchDescription);20 }21 @Override // org.hamcrest.Matcher22 public final boolean matches(Object item) {23 return item != null && this.expectedType.isInstance(item) && matchesSafely(item);24 }25 @Override // org.hamcrest.BaseMatcher, org.hamcrest.Matcher26 public final void describeMismatch(Object item, Description description) {27 if (item == null) {28 super.describeMismatch(null, description);29 } else if (!this.expectedType.isInstance(item)) {30 description.appendText("was a ").appendText(item.getClass().getName()).appendText(" (").appendValue(item).appendText(")");31 } else {32 describeMismatchSafely(item, description);33 }34 }35}...
Source: SrpMatchers.java
...12 public boolean matches(Object o) {13 return ((Map) o).isEmpty();14 }15 @Override16 public void describeMismatch(Object item, Description description) {17 super.describeMismatch(mapSizeMessage(item), description);18 }19 @Override20 public void describeTo(Description description) {21 description.appendText("Empty Map");22 }23 };24 }25 public static <K, V> org.hamcrest.Matcher<Map<K, V>> mapWithSize(final int size) {26 return new BaseMatcher<Map<K, V>>() {27 @Override28 public boolean matches(Object o) {29 return ((Map) o).size() == size;30 }31 @Override32 public void describeMismatch(Object item, Description description) {33 super.describeMismatch(mapSizeMessage(item), description);34 }35 @Override36 public void describeTo(Description description) {37 description.appendText("Map with size " + size);38 }39 };40 }41 private static String mapSizeMessage(Object item) {42 return "Map with size " + ((Map) item).size() + ": " + item;43 }44}...
Source: Is.java
...15 public void describeTo(Description description) {16 description.appendText("is ").appendDescriptionOf(this.matcher);17 }18 @Override // org.hamcrest.BaseMatcher, org.hamcrest.Matcher19 public void describeMismatch(Object item, Description mismatchDescription) {20 this.matcher.describeMismatch(item, mismatchDescription);21 }22 public static <T> Matcher<T> is(Matcher<T> matcher2) {23 return new Is(matcher2);24 }25 public static <T> Matcher<T> is(T value) {26 return is(IsEqual.equalTo(value));27 }28 public static <T> Matcher<T> isA(Class<T> type) {29 return is((Matcher) IsInstanceOf.instanceOf(type));30 }31}...
describeMismatch
Using AI Code Generation
1org.hamcrest.BaseMatcher.describeMismatch(Object item, Description description)2org.hamcrest.BaseMatcher.describeTo(Description description)3org.hamcrest.BaseMatcher.matches(Object item)4org.hamcrest.BaseMatcher.toString()5org.hamcrest.BaseMatcher.wrapMatcher(org.hamcrest.Matcher matcher)6org.hamcrest.BaseMatcher.wrapMatcher(java.lang.String description, org.hamcrest.Matcher matcher)7org.hamcrest.BaseMatcher.wrapMatcher(java.lang.String description, org.hamcrest.SelfDescribing value, org.hamcrest.Matcher matcher)8org.hamcrest.BaseMatcher.wrapMismatchDescription(java.lang.String description, org.hamcrest.SelfDescribing value, org.hamcrest.SelfDescribing mismatchDescription)9org.hamcrest.BaseMatcher.wrapValueDescription(java.lang.String description, org.hamcrest.SelfDescribing value)10org.hamcrest.BaseMatcher.wrapValueWithIsEqualTo(java.lang.Object value)11org.hamcrest.BaseMatcher.wrapValueWithIsSame(java.lang.Object value)12org.hamcrest.BaseMatcher.wrapWithIsEqual(java.lang.Object value)13org.hamcrest.BaseMatcher.wrapWithIsSame(java.lang.Object value)14org.hamcrest.BaseMatcher.wrapWithIs(java.lang.String description, org.hamcrest.SelfDescribing value)15org.hamcrest.BaseMatcher.wrapWithIs(java.lang.String description, org.hamcrest.SelfDescribing value, org.hamcrest.Matcher matcher)16org.hamcrest.BaseMatcher.wrapWithIsNot(java.lang.String description, org.hamcrest.SelfDescribing value, org.hamcrest.Matcher matcher)17org.hamcrest.BaseMatcher.wrapWithNot(org.hamcrest.Matcher matcher)
describeMismatch
Using AI Code Generation
1package com.zetcode;2import org.hamcrest.BaseMatcher;3import org.hamcrest.Description;4import org.hamcrest.Matcher;5public class JavaMatcher extends BaseMatcher {6 private final int expected;7 public JavaMatcher(int expected) {8 this.expected = expected;9 }10 public boolean matches(Object actual) {11 return actual.equals(expected);12 }13 public void describeTo(Description desc) {14 desc.appendText(String.valueOf(expected));15 }16 public void describeMismatch(Object actual, Description desc) {17 desc.appendText("was ").appendText(String.valueOf(actual));18 }19 public static Matcher<Integer> isJava(int expected) {20 return new JavaMatcher(expected);21 }22}23package com.zetcode;24import org.junit.Test;25import static org.junit.Assert.*;26public class JavaMatcherTest {27 public void testJavaMatcher() {28 int actual = 8;29 int expected = 8;30 assertThat(actual, JavaMatcher.isJava(expected));31 }32}
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