How to use StringStartsWith class of org.hamcrest.core package

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...15import org.hamcrest.core.IsNull;16import org.hamcrest.core.IsSame;17import org.hamcrest.core.StringContains;18import org.hamcrest.core.StringEndsWith;19import org.hamcrest.core.StringStartsWith;20public class CoreMatchers {21 public static <T> Matcher<T> allOf(Iterable<Matcher<? super T>> matchers) {22 return AllOf.allOf((Iterable) matchers);23 }24 @SafeVarargs25 public static <T> Matcher<T> allOf(Matcher<? super T>... matchers) {26 return AllOf.allOf((Matcher[]) matchers);27 }28 public static <T> AnyOf<T> anyOf(Iterable<Matcher<? super T>> matchers) {29 return AnyOf.anyOf((Iterable) matchers);30 }31 @SafeVarargs32 public static <T> AnyOf<T> anyOf(Matcher<? super T>... matchers) {33 return AnyOf.anyOf((Matcher[]) matchers);34 }35 public static <LHS> CombinableBothMatcher<LHS> both(Matcher<? super LHS> matcher) {36 return CombinableMatcher.both(matcher);37 }38 public static <LHS> CombinableEitherMatcher<LHS> either(Matcher<? super LHS> matcher) {39 return CombinableMatcher.either(matcher);40 }41 public static <T> Matcher<T> describedAs(String description, Matcher<T> matcher, Object... values) {42 return DescribedAs.describedAs(description, matcher, values);43 }44 public static <U> Matcher<Iterable<? extends U>> everyItem(Matcher<U> itemMatcher) {45 return Every.everyItem(itemMatcher);46 }47 public static <T> Matcher<T> is(Matcher<T> matcher) {48 return Is.is((Matcher) matcher);49 }50 public static <T> Matcher<T> is(T value) {51 return Is.is((Object) value);52 }53 public static void is(Class<?> cls) {54 }55 public static <T> Matcher<T> isA(Class<T> type) {56 return Is.isA(type);57 }58 public static Matcher<Object> anything() {59 return IsAnything.anything();60 }61 public static Matcher<Object> anything(String description) {62 return IsAnything.anything(description);63 }64 public static <T> Matcher<Iterable<? super T>> hasItem(Matcher<? super T> itemMatcher) {65 return IsCollectionContaining.hasItem((Matcher) itemMatcher);66 }67 public static <T> Matcher<Iterable<? super T>> hasItem(T item) {68 return IsCollectionContaining.hasItem((Object) item);69 }70 @SafeVarargs71 public static <T> Matcher<Iterable<T>> hasItems(Matcher<? super T>... itemMatchers) {72 return IsCollectionContaining.hasItems((Matcher[]) itemMatchers);73 }74 @SafeVarargs75 public static <T> Matcher<Iterable<T>> hasItems(T... items) {76 return IsCollectionContaining.hasItems((Object[]) items);77 }78 public static <T> Matcher<T> equalTo(T operand) {79 return IsEqual.equalTo(operand);80 }81 public static Matcher<Object> equalToObject(Object operand) {82 return IsEqual.equalToObject(operand);83 }84 public static <T> Matcher<T> any(Class<T> type) {85 return IsInstanceOf.any(type);86 }87 public static <T> Matcher<T> instanceOf(Class<?> type) {88 return IsInstanceOf.instanceOf(type);89 }90 public static <T> Matcher<T> not(Matcher<T> matcher) {91 return IsNot.not((Matcher) matcher);92 }93 public static <T> Matcher<T> not(T value) {94 return IsNot.not((Object) value);95 }96 public static Matcher<Object> notNullValue() {97 return IsNull.notNullValue();98 }99 public static <T> Matcher<T> notNullValue(Class<T> type) {100 return IsNull.notNullValue(type);101 }102 public static Matcher<Object> nullValue() {103 return IsNull.nullValue();104 }105 public static <T> Matcher<T> nullValue(Class<T> type) {106 return IsNull.nullValue(type);107 }108 public static <T> Matcher<T> sameInstance(T target) {109 return IsSame.sameInstance(target);110 }111 public static <T> Matcher<T> theInstance(T target) {112 return IsSame.theInstance(target);113 }114 public static Matcher<String> containsString(String substring) {115 return StringContains.containsString(substring);116 }117 public static Matcher<String> containsStringIgnoringCase(String substring) {118 return StringContains.containsStringIgnoringCase(substring);119 }120 public static Matcher<String> startsWith(String prefix) {121 return StringStartsWith.startsWith(prefix);122 }123 public static Matcher<String> startsWithIgnoringCase(String prefix) {124 return StringStartsWith.startsWithIgnoringCase(prefix);125 }126 public static Matcher<String> endsWith(String suffix) {127 return StringEndsWith.endsWith(suffix);128 }129 public static Matcher<String> endsWithIgnoringCase(String suffix) {130 return StringEndsWith.endsWithIgnoringCase(suffix);131 }132}...

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1package com.mrv.yangtools.codegen.impl.postprocessor;2import org.hamcrest.core.Every;3import org.hamcrest.core.StringStartsWith;4import org.junit.Assert;5import org.junit.Test;6import static org.hamcrest.CoreMatchers.*;7import static org.hamcrest.core.IsNot.not;8import static org.junit.Assert.assertEquals;9/​**10 * @author bartosz.michalik@amartus.com11 */​12public class PathPrunnerTest extends AbstractWithSwagger {13 @Test14 public void noChange() {15 int orgPathsCnt = swagger.getPaths().size();16 int orgDefCnt = swagger.getDefinitions().size();17 new PathPrunner().accept(swagger);18 assertEquals(orgPathsCnt, swagger.getPaths().size());19 assertEquals(orgDefCnt, swagger.getDefinitions().size());20 }21 @Test22 public void prunePathB() {23 int orgPathsCnt = swagger.getPaths().size();24 int orgDefCnt = swagger.getDefinitions().size();25 new PathPrunner()26 .prunePath("/​b")27 .accept(swagger);28 assertEquals(orgPathsCnt - 4, swagger.getPaths().size());29 assertEquals(orgDefCnt, swagger.getDefinitions().size());30 Assert.assertThat(swagger.getPaths().keySet(), Every.everyItem(not(StringStartsWith.startsWith("/​b"))));31 }32 @Test33 public void prunePathBA() {34 int orgPathsCnt = swagger.getPaths().size();35 int orgDefCnt = swagger.getDefinitions().size();36 new PathPrunner()37 .prunePath("/​b/​propE")38 .prunePath("/​a")39 .accept(swagger);40 assertEquals(orgPathsCnt - 3, swagger.getPaths().size());41 assertEquals(orgDefCnt, swagger.getDefinitions().size());42 Assert.assertThat(swagger.getPaths().keySet(), Every.everyItem(not(StringStartsWith.startsWith("/​b/​propE"))));43 Assert.assertThat(swagger.getPaths().keySet(), Every.everyItem(not(StringStartsWith.startsWith("/​a"))));44 Assert.assertThat(swagger.getPaths().keySet(), hasItem(StringStartsWith.startsWith("/​b")));45 }46 @Test47 public void pruneParent2() {48 int orgDefCnt = swagger.getDefinitions().size();49 new PathPrunner()50 .withType("Parent1")51 .accept(swagger);52 assertEquals(2, swagger.getPaths().size());53 Assert.assertThat(swagger.getPaths().keySet(), hasItems(54 is("/​a"),55 is("/​b")56 ));57 assertEquals(orgDefCnt, swagger.getDefinitions().size());58 }...

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1package org.hamcrest.core;2import org.hamcrest.AbstractMatcherTest;3import org.hamcrest.Matcher;4import static org.hamcrest.core.StringStartsWith.startsWith;5import static org.hamcrest.core.StringStartsWith.startsWithIgnoringCase;6public class StringStartsWithTest extends AbstractMatcherTest {7 static final String EXCERPT = "EXCERPT";8 final Matcher<String> stringStartsWith = startsWith(EXCERPT);9 @Override10 protected Matcher<?> createMatcher() {11 return stringStartsWith;12 }13 public void testMatchesStringAtStart() {14 assertMatches(stringStartsWith, EXCERPT + "END");15 assertDoesNotMatch(stringStartsWith, "START" + EXCERPT);16 assertDoesNotMatch(stringStartsWith, "START" + EXCERPT + "END");17 assertMatches(stringStartsWith, EXCERPT);18 assertDoesNotMatch(stringStartsWith, EXCERPT.toLowerCase());19 assertMatches(stringStartsWith, EXCERPT + EXCERPT);20 assertDoesNotMatch(stringStartsWith, "EXCER");...

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1package org.hamcrest.core;2import org.hamcrest.Matcher;3public class StringStartsWith extends SubstringMatcher {4 public StringStartsWith(boolean ignoringCase, String substring) {5 super("starting with", ignoringCase, substring);6 }7 /​* access modifiers changed from: protected */​8 @Override /​/​ org.hamcrest.core.SubstringMatcher9 public boolean evalSubstringOf(String s) {10 return converted(s).startsWith(converted(this.substring));11 }12 public static Matcher<String> startsWith(String prefix) {13 return new StringStartsWith(false, prefix);14 }15 public static Matcher<String> startsWithIgnoringCase(String prefix) {16 return new StringStartsWith(true, prefix);17 }18}...

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StringStartsWith

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1import org.hamcrest.core.StringStartsWith;2assertThat("Hello World", StringStartsWith.startsWith("Hello"));3import org.hamcrest.core.StringEndsWith;4assertThat("Hello World", StringEndsWith.endsWith("World"));5import org.hamcrest.core.StringContainsString;6assertThat("Hello World", StringContainsString.containsString("World"));7import org.hamcrest.core.StringContainsInOrder;8assertThat("Hello World", StringContainsInOrder.containsString("Hello"));9import org.hamcrest.core.StringContainsInOrder;10assertThat("Hello World", StringContainsInOrder.containsString("World"));11import org.hamcrest.core.StringContainsInOrder;12assertThat("Hello World", StringContainsInOrder.containsString("Hello World"));13import org.hamcrest.core.StringContainsInOrder;14assertThat("Hello World", StringContainsInOrder.containsStrings(Arrays.asList("Hello", "World")));15import org.hamcrest.core.StringContainsInOrder;16assertThat("Hello World", StringContainsInOrder.containsString("Hello World"));17import org.hamcrest.core.StringContainsInOrder;18assertThat("Hello World", StringContainsInOrder.containsStrings(Arrays.asList("Hello", "World")));19import org.hamcrest.core.StringContainsInOrder;20assertThat("Hello World", StringContainsInOrder.containsStrings(Arrays.asList("Hello World")));21import org.hamcrest.core.StringContainsInOrder;22assertThat("Hello World", StringContainsInOrder.containsString("Hello World"));23import org.hamcrest.core.StringContainsInOrder;24assertThat("Hello World", StringContainsInOrder.containsStrings(Arrays.asList("Hello", "World")));25import org.hamcrest.core.StringContainsInOrder;26assertThat("Hello World", StringContainsInOrder

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StringStartsWith

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1assertThat("Hello World", StringStartsWith.startsWith("Hello"));2assertThat("Hello World", StringEndsWith.endsWith("World"));3assertThat("Hello World", StringContains.containsString("Hello"));4assertThat("Hello World", StringContains.containsString("World"));5assertThat("Hello World", StringContains.containsString(" "));6assertThat("Hello World", StringStartsWithIgnoringCase.startsWithIgnoringCase("Hello"));7assertThat("Hello World", StringStartsWithIgnoringCase.startsWithIgnoringCase("hello"));8assertThat("Hello World", StringStartsWithIgnoringCase.startsWithIgnoringCase("HELLO"));9assertThat("Hello World", StringEndsWithIgnoringCase.endsWithIgnoringCase("World"));10assertThat("Hello World", StringEndsWithIgnoringCase.endsWithIgnoringCase("world"));11assertThat("Hello World", StringEndsWithIgnoringCase.endsWithIgnoringCase("WORLD"));12assertThat("Hello World", StringContainsIgnoringCase.containsStringIgnoringCase("Hello"));13assertThat("Hello World", StringContainsIgnoringCase.containsStringIgnoringCase("hello"));14assertThat("Hello World", StringContainsIgnoringCase.containsStringIgnoringCase("HELLO"));15assertThat("Hello World", StringContainsIgnoringCase.containsStringIgnoringCase("World"));16assertThat("Hello World", StringContainsIgnoringCase.containsStringIgnoringCase("world"));17assertThat("Hello World", StringContainsIgnoringCase.containsStringIgnoringCase("WORLD"));18assertThat("Hello World", StringStartsWith.startsWith("Hello"));19assertThat("Hello World", StringEndsWith.endsWith("World"));20assertThat("Hello World", StringContains.containsString("Hello"));21assertThat("Hello World", StringContains.containsString("World"));22assertThat("Hello World", StringContains.containsString(" "));23assertThat("Hello World", StringStartsWithIgnoringCase.startsWithIgnoringCase("Hello"));24assertThat("Hello World", StringStartsWithIgnoringCase.startsWith

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1import org.hamcrest.core.StringStartsWith;2import org.junit.Test;3import static org.junit.Assert.assertThat;4public class StringStartsWithTest {5 public void testStringStartsWith() {6 assertThat("This is a test", StringStartsWith.startsWith("This"));7 }8}9 at org.junit.Assert.assertEquals(Assert.java:115)10 at org.junit.Assert.assertEquals(Assert.java:144)11 at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)12 at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:8)13 at StringStartsWithTest.testStringStartsWith(StringStartsWithTest.java:10)14 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)15 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)16 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)17 at java.lang.reflect.Method.invoke(Method.java:606)18 at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)19 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)20 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)21 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)22 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)23 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:77)24 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)25 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)26 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)27 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)28 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)29 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)30 at org.junit.runners.ParentRunner.run(ParentRunner.java:363)31 at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)32 at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)33 at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTest

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StringStartsWith

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1import org.hamcrest.core.StringStartsWith;2import static org.hamcrest.MatcherAssert.assertThat;3import org.testng.annotations.Test;4public class TestStringStartsWith {5 public void testStringStartsWith() {6 String str = "TestNG is a testing framework";7 assertThat(str, StringStartsWith.startsWith("TestNG"));8 }9}10import org.hamcrest.core.StringEndsWith;11import static org.hamcrest.MatcherAssert.assertThat;12import org.testng.annotations.Test;13public class TestStringEndsWith {14 public void testStringEndsWith() {15 String str = "TestNG is a testing framework";16 assertThat(str, StringEndsWith.endsWith("framework"));17 }18}19import org.hamcrest.core.StringContainsInOrder;20import static org.hamcrest.MatcherAssert.assertThat;21import org.testng.annotations.Test;22public class TestStringContainsInOrder {23 public void testStringContainsInOrder() {24 String str = "TestNG is a testing framework";25 assertThat(str, StringContainsInOrder.containsString("TestNG"));26 assertThat(str, StringContainsInOrder.containsString("a"));27 assertThat(str, StringContainsInOrder.containsString("framework"));28 }29}30import org.hamcrest.core.StringContains;31import static org.hamcrest.MatcherAssert.assertThat;32import org.testng.annotations.Test;33public class TestStringContains {34 public void testStringContains() {35 String str = "TestNG is a testing framework";36 assertThat(str, StringContains.containsString("TestNG"));37 }38}39import org.hamcrest.core.StringContainsIgnoringCase;40import static org.hamcrest.MatcherAssert.assertThat;41import org.testng.annotations.Test;42public class TestStringContainsIgnoringCase {43 public void testStringContainsIgnoringCase() {44 String str = "TestNG is a testing framework";

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StringStartsWith

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1import org.hamcrest.core.StringStartsWith;2import org.junit.Test;3import static org.junit.Assert.*;4public class StringStartsWithTest {5public void testStringStartsWith() {6String str = "Hello World";7assertTrue(StringStartsWith.startsWith(str, "Hello"));8assertFalse(StringStartsWith.startsWith(str, "World"));9}10}11StringStartsWithTest > testStringStartsWith() PASSED12public static Matcher<String> endsWith(String substring)13import org.hamcrest.core.StringEndsWith;14import org.junit.Test;15import static org.junit.Assert.*;16public class StringEndsWithTest {17public void testStringEndsWith() {18String str = "Hello World";19assertTrue(StringEndsWith.endsWith(str, "World"));20assertFalse(StringEndsWith.endsWith(str, "Hello"));21}22}23StringEndsWithTest > testStringEndsWith() PASSED24public static Matcher<String> stringContainsInOrder(String... substrings)25import org.hamcrest.core.StringContainsInOrder;26import org.junit.Test;27import static org.junit.Assert.*;28public class StringContainsInOrderTest {29public void testStringContainsInOrder() {30String str = "Hello World";31assertTrue(StringContainsInOrder.stringContainsInOrder(str, "Hello", "World"));32assertFalse(StringContainsInOrder.stringContainsInOrder(str, "World", "Hello"));33}34}35StringContainsInOrderTest > testStringContainsInOrder() PASSED

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StringStartsWith

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1import static org.hamcrest.CoreMatchers.startsWith;2import static org.hamcrest.MatcherAssert.assertThat;3import static org.hamcrest.Matchers.equalTo;4import static org.hamcrest.Matchers.is;5import org.testng.annotations.Test;6public class HamcrestStringStartsWith {7 public void testStringStartsWith() {8 String str = "Hello World";9 assertThat(str, startsWith("Hello"));10 assertThat(str, is(equalTo("Hello World")));11 }12}

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1import static org.hamcrest.MatcherAssert.assertThat;2import static org.hamcrest.CoreMatchers.*;3public class StringStartsWithExample {4 public static void main(String args[]){5 assertThat("This is a sample String", startsWith("This"));6 }7}8import static org.hamcrest.MatcherAssert.assertThat;9import static org.hamcrest.CoreMatchers.*;10public class StringEndsWithExample {11 public static void main(String args[]){12 assertThat("This is a sample String", endsWith("String"));13 }14}15import static org.hamcrest.MatcherAssert.assertThat;16import static org.hamcrest.CoreMatchers.*;17public class StringContainsInOrderExample {18 public static void main(String args[]){19 assertThat("This is a sample String", containsString("sample"));20 }21}22import static org.hamcrest.MatcherAssert.assertThat;23import static org.hamcrest.CoreMatchers.*;24public class StringContainsExample {

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1String script = "var callback = arguments[arguments.length - 1];" + /​/​the last argument is the callback function2 "var classToCall = 'SeleniumTest.IsPageReloaded';" + /​/​the classname you want to return to call from Java in case of success)3 "window.addEventListener('onload', callback(classToCall));"; 4/​/​you can give any supported return value to the callback function. Here I assume that you want to call a static method. This is the class name that can be used later.5try {6 JavascriptExecutor js = (JavascriptExecutor)driver;7 /​/​classToCall has the value we passed to the callback function8 String classToCall = js.executeAsyncScript(script);9} catch (ScriptTimeoutException e) {10 System.err.println("Uhhh... this failed I guess");11 e.printStackTrace();12}13
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JUnit 4 Expected Exception type

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Best way to automagically migrate tests from JUnit 3 to JUnit 4?

There's actually an alternative to the @Test(expected=Xyz.class) in JUnit 4.7 using Rule and ExpectedException

In your test case you declare an ExpectedException annotated with @Rule, and assign it a default value of ExpectedException.none(). Then in your test that expects an exception you replace the value with the actual expected value. The advantage of this is that without using the ugly try/catch method, you can further specify what the message within the exception was

@Rule public ExpectedException thrown= ExpectedException.none();

@Test
public void myTest() {
    thrown.expect( Exception.class );
    thrown.expectMessage("Init Gold must be >= 0");

    rodgers = new Pirate("Dread Pirate Rodgers" , -100);
}

Using this method, you might be able to test for the message in the generic exception to be something specific.

ADDITION Another advantage of using ExpectedException is that you can more precisely scope the exception within the context of the test case. If you are only using @Test(expected=Xyz.class) annotation on the test, then the Xyz exception can be thrown anywhere in the test code -- including any test setup or pre-asserts within the test method. This can lead to a false positive.

Using ExpectedException, you can defer specifying the thrown.expect(Xyz.class) until after any setup and pre-asserts, just prior to actually invoking the method under test. Thus, you more accurately scope the exception to be thrown by the actual method invocation rather than any of the test fixture itself.

JUnit 5 NOTE:

JUnit 5 JUnit Jupiter has removed @Test(expected=...), @Rule and ExpectedException altogether. They are replaced with the new assertThrows(), which requires the use of Java 8 and lambda syntax. ExpectedException is still available for use in JUnit 5 through JUnit Vintage. Also JUnit Jupiter will also continue to support JUnit 4 ExpectedException through use of the junit-jupiter-migrationsupport module, but only if you add an additional class-level annotation of @EnableRuleMigrationSupport.

https://stackoverflow.com/questions/16723715/junit-4-expected-exception-type

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