How to use matches method of org.hamcrest.TypeSafeMatcher class

Best junit code snippet using org.hamcrest.TypeSafeMatcher.matches

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...26 public static Matcher<String> containsStripNewLines(final String expected) {27 final String strippedExpected = StringExtensions.stripNewLines(expected);28 return new StringContains(strippedExpected) {29 @Override30 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}...

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...29 public static Matcher<String> containsStripNewLines(final String expected) {30 final String strippedExpected = StringUtils.stripNewLines(expected);31 return new StringContains(strippedExpected) {32 @Override33 public boolean matchesSafely(final String actual) {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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...15public class FileMatchers {16 public static Matcher<File> isDirectory() {17 return new TypeSafeMatcher<File>() {18 File fileTested;19 public boolean matchesSafely(File item) {20 fileTested = item;21 return item.isDirectory();22 }23 public void describeTo(Description description) {24 description.appendText(" that ");25 description.appendValue(fileTested);26 description.appendText("is a directory");27 }28 };29 }30 public static Matcher<File> exists() {31 return new TypeSafeMatcher<File>() {32 File fileTested;33 public boolean matchesSafely(File item) {34 fileTested = item;35 return item.exists();36 }37 public void describeTo(Description description) {38 description.appendText(" that file ");39 description.appendValue(fileTested);40 description.appendText(" exists");41 }42 };43 }44 public static Matcher<File> isFile() {45 return new TypeSafeMatcher<File>() {46 File fileTested;47 public boolean matchesSafely(File item) {48 fileTested = item;49 return item.isFile();50 }51 public void describeTo(Description description) {52 description.appendText(" that ");53 description.appendValue(fileTested);54 description.appendText("is a file");55 }56 };57 }58 public static Matcher<File> readable() {59 return new TypeSafeMatcher<File>() {60 File fileTested;61 public boolean matchesSafely(File item) {62 fileTested = item;63 return item.canRead();64 }65 public void describeTo(Description description) {66 description.appendText(" that file ");67 description.appendValue(fileTested);68 description.appendText("is readable");69 }70 };71 }72 public static Matcher<File> writable() {73 return new TypeSafeMatcher<File>() {74 File fileTested;75 public boolean matchesSafely(File item) {76 fileTested = item;77 return item.canWrite();78 }79 public void describeTo(Description description) {80 description.appendText(" that file ");81 description.appendValue(fileTested);82 description.appendText("is writable");83 }84 };85 }86 public static Matcher<File> sized(long size) {87 return sized(Matchers.equalTo(size));88 }89 public static Matcher<File> sized(final Matcher<Long> size) {90 return new TypeSafeMatcher<File>() {91 File fileTested;92 long length;93 public boolean matchesSafely(File item) {94 fileTested = item;95 length = item.length();96 return size.matches(length);97 }98 public void describeTo(Description description) {99 description.appendText(" that file ");100 description.appendValue(fileTested);101 description.appendText(" is sized ");102 description.appendDescriptionOf(size);103 description.appendText(", not " + length);104 }105 };106 }107 public static Matcher<File> named(final Matcher<String> name) {108 return new TypeSafeMatcher<File>() {109 File fileTested;110 public boolean matchesSafely(File item) {111 fileTested = item;112 return name.matches(item.getName());113 }114 public void describeTo(Description description) {115 description.appendText(" that file ");116 description.appendValue(fileTested);117 description.appendText(" is named");118 description.appendDescriptionOf(name);119 description.appendText(" not ");120 description.appendValue(fileTested.getName());121 }122 };123 }124 public static Matcher<File> withCanonicalPath(final Matcher<String> path) {125 return new TypeSafeMatcher<File>() {126 public boolean matchesSafely(File item) {127 try {128 return path.matches(item.getCanonicalPath());129 } catch (IOException e) {130 return false;131 }132 }133 public void describeTo(Description description) {134 description.appendText("with canonical path '");135 description.appendDescriptionOf(path);136 description.appendText("'");137 }138 };139 }140 public static Matcher<File> withAbsolutePath(final Matcher<String> path) {141 return new TypeSafeMatcher<File>() {142 File fileTested;143 public boolean matchesSafely(File item) {144 fileTested = item;145 return path.matches(item.getAbsolutePath());146 }147 public void describeTo(Description description) {148 description.appendText("with absolute path '");149 description.appendDescriptionOf(path);150 description.appendText("'");151 }152 };153 }154}...

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...26 public static Matcher<Index> isNamed() {27 final Matcher<String> notEmptyString = CoreMatchers.not(isEmptyOrNullString());28 return new TypeSafeMatcher<Index>() {29 @Override30 public boolean matchesSafely(Index index) {31 return notEmptyString.matches(index.getIndexName());32 }33 @Override34 public void describeTo(Description description) {35 description.appendText("indexName should be ");36 notEmptyString.describeTo(description);37 }38 @Override39 public void describeMismatchSafely(Index index, Description description) {40 notEmptyString.describeMismatch(index.getIndexName(), description);41 }42 };43 }44 public static Matcher<Index> hasName(final String indexName) {45 return new TypeSafeMatcher<Index>() {46 @Override47 public boolean matchesSafely(Index index) {48 return Objects.equals(indexName, index.getIndexName());49 }50 @Override51 public void describeTo(Description description) {52 description.appendText("indexName should be ").appendValue(indexName);53 }54 @Override55 public void describeMismatchSafely(Index index, Description description) {56 description.appendText("was ").appendValue(index.getIndexName());57 }58 };59 }60 public static Matcher<Index> hasTable(final String tableName) {61 return new TypeSafeMatcher<Index>() {62 @Override63 public boolean matchesSafely(Index index) {64 return Objects.equals(tableName, index.getTableName());65 }66 @Override67 public void describeTo(Description description) {68 description.appendText("tableName should be ").appendValue(tableName);69 }70 @Override71 public void describeMismatchSafely(Index index, Description description) {72 description.appendText("was ").appendValue(index.getTableName());73 }74 };75 }76 public static Matcher<Index> hasFieldsInOrder(final List<String> fieldNames) {77 final Matcher<Iterable<? extends String>> contains = contains(fieldNames.toArray(new String[fieldNames.size()]));78 return new TypeSafeMatcher<Index>() {79 @Override80 public boolean matchesSafely(Index index) {81 return contains.matches(index.getFieldNames());82 }83 @Override84 public void describeTo(Description description) {85 description.appendText("fieldNames should be an ");86 contains.describeTo(description);87 }88 @Override89 public void describeMismatchSafely(Index index, Description description) {90 contains.describeMismatch(index.getFieldNames(), description);91 }92 };93 }94}...

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...21 describeMismatchSafely((Throwable) ((Throwable) obj), description);22 }23 /​* access modifiers changed from: protected */​24 @Override /​/​ org.hamcrest.TypeSafeMatcher25 public /​* bridge */​ /​* synthetic */​ boolean matchesSafely(Object obj) {26 return matchesSafely((Throwable) ((Throwable) obj));27 }28 public StacktracePrintingMatcher(Matcher<T> throwableMatcher2) {29 this.throwableMatcher = throwableMatcher2;30 }31 @Override /​/​ org.hamcrest.SelfDescribing32 public void describeTo(Description description) {33 this.throwableMatcher.describeTo(description);34 }35 /​* access modifiers changed from: protected */​36 public boolean matchesSafely(T item) {37 return this.throwableMatcher.matches(item);38 }39 /​* access modifiers changed from: protected */​40 public void describeMismatchSafely(T item, Description description) {41 this.throwableMatcher.describeMismatch(item, description);42 description.appendText("\nStacktrace was: ");43 description.appendText(readStacktrace(item));44 }45 private String readStacktrace(Throwable throwable) {46 StringWriter stringWriter = new StringWriter();47 throwable.printStackTrace(new PrintWriter(stringWriter));48 return stringWriter.toString();49 }50 @Factory51 public static <T extends Throwable> Matcher<T> isThrowable(Matcher<T> throwableMatcher2) {...

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...19 describeMismatchSafely((Throwable) ((Throwable) obj), description);20 }21 /​* access modifiers changed from: protected */​22 @Override /​/​ org.hamcrest.TypeSafeMatcher23 public /​* bridge */​ /​* synthetic */​ boolean matchesSafely(Object obj) {24 return matchesSafely((Throwable) ((Throwable) obj));25 }26 public ThrowableCauseMatcher(Matcher<? extends Throwable> causeMatcher2) {27 this.causeMatcher = causeMatcher2;28 }29 @Override /​/​ org.hamcrest.SelfDescribing30 public void describeTo(Description description) {31 description.appendText("exception with cause ");32 description.appendDescriptionOf(this.causeMatcher);33 }34 /​* access modifiers changed from: protected */​35 public boolean matchesSafely(T item) {36 return this.causeMatcher.matches(item.getCause());37 }38 /​* access modifiers changed from: protected */​39 public void describeMismatchSafely(T item, Description description) {40 description.appendText("cause ");41 this.causeMatcher.describeMismatch(item.getCause(), description);42 }43 @Factory44 public static <T extends Throwable> Matcher<T> hasCause(Matcher<? extends Throwable> matcher) {45 return new ThrowableCauseMatcher(matcher);46 }47}...

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...19 describeMismatchSafely((Throwable) ((Throwable) obj), description);20 }21 /​* access modifiers changed from: protected */​22 @Override /​/​ org.hamcrest.TypeSafeMatcher23 public /​* bridge */​ /​* synthetic */​ boolean matchesSafely(Object obj) {24 return matchesSafely((Throwable) ((Throwable) obj));25 }26 public ThrowableMessageMatcher(Matcher<String> matcher2) {27 this.matcher = matcher2;28 }29 @Override /​/​ org.hamcrest.SelfDescribing30 public void describeTo(Description description) {31 description.appendText("exception with message ");32 description.appendDescriptionOf(this.matcher);33 }34 /​* access modifiers changed from: protected */​35 public boolean matchesSafely(T item) {36 return this.matcher.matches(item.getMessage());37 }38 /​* access modifiers changed from: protected */​39 public void describeMismatchSafely(T item, Description description) {40 description.appendText("message ");41 this.matcher.describeMismatch(item.getMessage(), description);42 }43 @Factory44 public static <T extends Throwable> Matcher<T> hasMessage(Matcher<String> matcher2) {45 return new ThrowableMessageMatcher(matcher2);46 }47}...

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...15public class CustomMatchers {16 public static <T> Matcher<Collection<? extends T>> onlyHasItems(T... expectedItems) {17 return new TypeSafeMatcher<Collection<? extends T>>() {18 @Override19 protected boolean matchesSafely(Collection<? extends T> actualItems) {20 return hasSize(expectedItems.length).matches(actualItems)21 && hasItems(expectedItems).matches(actualItems);22 }23 @Override24 public void describeTo(Description description) {25 description.appendText(Arrays.toString(expectedItems));26 }27 };28 }29 public static <T> TypeSafeMatcher<Collection<? extends T>> onlyHasItemsInOrder(T... expectedItems) {30 return new TypeSafeMatcher<Collection<? extends T>>() {31 @Override32 protected boolean matchesSafely(Collection<? extends T> actualItems) {33 boolean matches = actualItems.size() == asList(expectedItems).size();34 List<T> actualItemsList = new ArrayList<>(actualItems);35 for (int index = 0; index < expectedItems.length; index++) {36 matches = matches && is(actualItemsList.get(index)).matches(expectedItems[index]);37 }38 return matches;39 }40 @Override41 public void describeTo(Description description) {42 String expectedItemsString = stream(expectedItems)43 .map(Object::toString)44 .collect(joining(","));45 description.appendText("Containing only [" + expectedItemsString + "] in order");46 }47 };48 }49}...

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matches

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1import static org.hamcrest.MatcherAssert.assertThat;2import static org.hamcrest.Matchers.*;3import static org.hamcrest.core.Is.is;4import org.hamcrest.TypeSafeMatcher;5import org.junit.Test;6public class TypeSafeMatcherTest {7 public void testTypeSafeMatcher() {8 int a = 10;9 int b = 20;10 int c = 30;11 assertThat(a, is(lessThan(b)));12 assertThat(a, is(lessThan(c)));13 assertThat(b, is(greaterThan(a)));14 assertThat(b, is(lessThan(c)));15 assertThat(c, is(greaterThan(a)));16 assertThat(c, is(greaterThan(b)));17 assertThat(a, is(lessThan(b) & lessThan(c)));18 assertThat(b, is(greaterThan(a) & lessThan(c)));19 assertThat(c, is(greaterThan(a) & greaterThan(b)));20 assertThat(a, is(lessThan(b) & lessThan(c) & lessThan(a + b + c)));21 assertThat(b, is(greaterThan(a) & lessThan(c) & lessThan(a + b + c)));22 assertThat(c, is(greaterThan(a) & greaterThan(b) & lessThan(a + b + c)));23 assertThat(a, is(lessThan(b) & lessThan(c) & lessThan(a + b + c) & lessThan(a * b * c)));24 assertThat(b, is(greaterThan(a) & lessThan(c) & lessThan(a + b + c) & lessThan(a * b * c)));25 assertThat(c, is(greaterThan(a) & greaterThan(b) & lessThan(a + b + c) & lessThan(a * b * c)));26 assertThat(a, is(lessThan(b) & lessThan(c) & lessThan(a + b + c) & lessThan(a * b * c) & lessThan(a - b - c)));27 assertThat(b, is(greaterThan(a) & lessThan(c) & lessThan(a + b + c) & lessThan(a * b * c) & lessThan(a - b - c)));28 assertThat(c, is(greaterThan(a) & greaterThan(b) & lessThan(a + b + c) & lessThan(a * b * c) & lessThan(a - b - c)));29 assertThat(a, is(lessThan(b) & lessThan(c) & lessThan(a + b

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1import org.hamcrest.MatcherAssert;2import org.hamcrest.TypeSafeMatcher;3import org.hamcrest.Description;4import org.hamcrest.Factory;5public class IsPhoneNumber extends TypeSafeMatcher<String> {6 public boolean matchesSafely(String s) {7 return s.matches("\\d{3}-\\d{3}-\\d{4}");8 }9 public void describeTo(Description description) {10 description.appendText("a valid phone number");11 }12 public static IsPhoneNumber validPhoneNumber() {13 return new IsPhoneNumber();14 }15}16public void testValidPhoneNumber() {17 String phoneNumber = "123-456-7890";18 MatcherAssert.assertThat(phoneNumber, IsPhoneNumber.validPhoneNumber());19}20at org.junit.Assert.assertEquals(Assert.java:115)21at org.junit.Assert.assertEquals(Assert.java:144)22at org.junit.Assert.assertThat(Assert.java:1006)23at org.junit.Assert.assertThat(Assert.java:1000)24at com.journaldev.junit.IsPhoneNumberTest.testValidPhoneNumber(IsPhoneNumberTest.java:21)25JUnit 4 TemporaryFolder Rule JUnit 4 ExpectedException ExpectedException.none() Rule26JUnit 4 ExpectedException ExpectedException.none() Rule JUnit 4 Parameterized Tests27JUnit 4 Timeout Rule JUnit 4 ExpectedException ExpectedException.none() Rule28JUnit 4 ExpectedException ExpectedException.none() Rule JUnit 4 ExpectedException Rule29JUnit 4 Timeout Rule JUnit 4 ExpectedException ExpectedException.none() Rule30JUnit 4 ExpectedException ExpectedException.none() Rule JUnit 4 ExpectedException Rule

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You should not need to test private methods.

  • A private method is specifically part of the implementation. You should not test the implemenation, but the functionality. If you test the functionality a class exposes, you can change the implementation while depending on the unit test.
  • If you feel the need to test a private method, this is a good sign that you should move the private method to another class and make the method public. By doing this, you get smaller classes and you can test the methods easily. If you do not want to expose this new class, you can make it package-private (the default access modifier).
https://stackoverflow.com/questions/3299405/how-should-i-test-private-methods-in-java

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Developed in 2004 by Thoughtworks for internal usage, Selenium is a widely used tool for automated testing of web applications. Initially, Selenium IDE(Integrated Development Environment) was being used by multiple organizations and testers worldwide, benefits of automation testing with Selenium saved a lot of time and effort. The major downside of automation testing with Selenium IDE was that it would only work with Firefox. To resolve the issue, Selenium RC(Remote Control) was used which enabled Selenium to support automated cross browser testing.

How To Build CI/CD Pipeline With TeamCity For Selenium Test Automation

Continuous Integration/Continuous Deployment (CI/CD) has become an essential part of modern software development cycles. As a part of continuous integration, the developer should ensure that the Integration should not break the existing code because this could lead to a negative impact on the overall quality of the project. In order to show how the integration process works, we’ll take an example of a well-known continuous integration tool, TeamCity. In this article, we will learn TeamCity concepts and integrate our test suites with TeamCity for test automation by leveraging LambdaTest cloud-based Selenium grid.

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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