Best junit code snippet using org.junit.rules.ExpectedException.handleAssumptionViolatedExceptions
org.junit.rules.ExpectedException
The ExpectedException is a rule which helps scripts to verify that the script throws the specific exception or not
Here are code snippets that can help you understand more how developers are using
Source: ExpectedException.java
...16public class ExpectedException17implements TestRule {18 private final ExpectedExceptionMatcherBuilder fMatcherBuilder = new ExpectedExceptionMatcherBuilder();19 private boolean handleAssertionErrors = false;20 private boolean handleAssumptionViolatedExceptions = false;21 private ExpectedException() {22 }23 private void failDueToMissingException() throws AssertionError {24 String string2 = StringDescription.toString(this.fMatcherBuilder.build());25 Assert.fail("Expected test to throw " + string2);26 }27 private void handleException(Throwable throwable) throws Throwable {28 if (this.fMatcherBuilder.expectsThrowable()) {29 Assert.assertThat(throwable, this.fMatcherBuilder.build());30 return;31 }32 throw throwable;33 }34 public static ExpectedException none() {35 return new ExpectedException();36 }37 private void optionallyHandleException(Throwable throwable, boolean bl2) throws Throwable {38 if (bl2) {39 this.handleException(throwable);40 return;41 }42 throw throwable;43 }44 @Override45 public Statement apply(Statement statement, Description description) {46 return new ExpectedExceptionStatement(statement);47 }48 public void expect(Class<? extends Throwable> class_) {49 this.expect(CoreMatchers.instanceOf(class_));50 }51 public void expect(Matcher<?> matcher) {52 this.fMatcherBuilder.add(matcher);53 }54 public void expectCause(Matcher<? extends Throwable> matcher) {55 this.expect(ThrowableCauseMatcher.hasCause(matcher));56 }57 public void expectMessage(String string2) {58 this.expectMessage(CoreMatchers.containsString(string2));59 }60 public void expectMessage(Matcher<String> matcher) {61 this.expect(ThrowableMessageMatcher.hasMessage(matcher));62 }63 public ExpectedException handleAssertionErrors() {64 this.handleAssertionErrors = true;65 return this;66 }67 public ExpectedException handleAssumptionViolatedExceptions() {68 this.handleAssumptionViolatedExceptions = true;69 return this;70 }71 private class ExpectedExceptionStatement72 extends Statement {73 private final Statement fNext;74 public ExpectedExceptionStatement(Statement statement) {75 this.fNext = statement;76 }77 @Override78 public void evaluate() throws Throwable {79 try {80 this.fNext.evaluate();81 if (ExpectedException.this.fMatcherBuilder.expectsThrowable()) {82 ExpectedException.this.failDueToMissingException();83 }84 return;85 }86 catch (AssumptionViolatedException var1_1) {87 ExpectedException.this.optionallyHandleException(var1_1, ExpectedException.this.handleAssumptionViolatedExceptions);88 return;89 }90 catch (AssertionError var1_2) {91 ExpectedException.this.optionallyHandleException((Throwable)((Object)var1_2), ExpectedException.this.handleAssertionErrors);92 return;93 }94 catch (Throwable var1_3) {95 ExpectedException.this.handleException(var1_3);96 return;97 }98 }99 }100}...
handleAssumptionViolatedExceptions
Using AI Code Generation
1public ExpectedException thrown = ExpectedException.none();2public void shouldTestExceptionMessage() throws IndexOutOfBoundsException {3 List<Object> list = new ArrayList<Object>();4 thrown.expect(IndexOutOfBoundsException.class);5 thrown.expectMessage("Index: 0, Size: 0");6 thrown.expectMessage(startsWith("Index:"));7 thrown.expectMessage(endsWith("Size: 0"));8 list.get(0);9}10 at org.junit.Assert.assertEquals(Assert.java:115)11 at org.junit.Assert.assertEquals(Assert.java:144)12 at com.baeldung.junit.exception.ExpectedExceptionTest.shouldTestExceptionMessage(ExpectedExceptionTest.java:19)13public void shouldTestExceptionMessage() throws IndexOutOfBoundsException {14 List<Object> list = new ArrayList<Object>();15 thrown.expect(AssertionError.class);16 thrown.expectMessage("Index: 0, Size: 0");17 thrown.expectMessage(startsWith("Index:"));18 thrown.expectMessage(endsWith("Size: 0"));19 Assert.assertEquals("Index: 0, Size: 0", list.get(0));20}21 at org.junit.Assert.assertEquals(Assert.java:115)22 at org.junit.Assert.assertEquals(Assert.java:144)23 at com.baeldung.junit.exception.ExpectedExceptionTest.shouldTestExceptionMessage(ExpectedExceptionTest.java:19)24public void shouldTestExceptionMessage() throws IndexOutOfBoundsException {25 List<Object> list = new ArrayList<Object>();26 thrown.expect(AssertionError.class);27 thrown.expectMessage("Index: 0, Size: 0");28 thrown.expectMessage(startsWith("Index:"));29 thrown.expectMessage(endsWith("Size: 0"));30 Assume.assumeTrue(list.get(0).equals("Index: 0, Size: 0"));31}32 at org.junit.Assume.assumeThat(Assume.java:95)
handleAssumptionViolatedExceptions
Using AI Code Generation
1@Rule public ExpectedException thrown = ExpectedException.none();2@Rule public ExpectedException thrown = ExpectedException.none();3@Rule public ExpectedException thrown = ExpectedException.none();4@Rule public ExpectedException thrown = ExpectedException.none();5@Rule public ExpectedException thrown = ExpectedException.none();6@Rule public ExpectedException thrown = ExpectedException.none();7@Rule public ExpectedException thrown = ExpectedException.none();8@Rule public ExpectedException thrown = ExpectedException.none();9@Rule public ExpectedException thrown = ExpectedException.none();10@Rule public ExpectedException thrown = ExpectedException.none();11@Rule public ExpectedException thrown = ExpectedException.none();12@Rule public ExpectedException thrown = ExpectedException.none();13@Rule public ExpectedException thrown = ExpectedException.none();14@Rule public ExpectedException thrown = ExpectedException.none();15@Rule public ExpectedException thrown = ExpectedException.none();16@Rule public ExpectedException thrown = ExpectedException.none();
handleAssumptionViolatedExceptions
Using AI Code Generation
1import org.junit.*;2import org.junit.rules.*;3import static org.junit.Assert.*;4import static org.junit.rules.ExpectedException.*;5public class TestException {6 public ExpectedException thrown = none();7 public void throwsNothing() {8 }9 public void throwsNullPointerException() {10 thrown.expect(NullPointerException.class);11 throw new NullPointerException();12 }13 public void throwsNullPointerExceptionWithMessage() {14 thrown.expect(NullPointerException.class);15 thrown.expectMessage("happened");16 throw new NullPointerException("What happened?");17 }18 public void throwsNullPointerExceptionWithMessageUsingMatcher() {19 thrown.expect(NullPointerException.class);20 thrown.expectMessage(containsString("happened"));21 throw new NullPointerException("What happened?");22 }23}
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