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How to use apply method of org.junit.rules.ExpectedException class

Best junit code snippet using org.junit.rules.ExpectedException.apply

ExpectedException`org.junit.rules.ExpectedException`

The ExpectedException is a rule which helps scripts to verify that the script throws the specific exception or not

Code Snippets

Here are code snippets that can help you understand more how developers are using

Source:Rule.java

...100    private void reset() {101        current = create();102    }103    abstract T create();104    abstract Statement apply(Statement statement, Description description, FrameworkMethod frameworkMethod, Object target);105    /**106     * The wrapper class used in the Specnaz JUnit 4 Runner.107     * You never need this class when writing tests,108     * it's just an implementation detail.109     */110    public static final class Wrapper<T> {111        private final Rule<T> inner;112        public Wrapper(Rule<T> inner) {113            this.inner = inner;114        }115        public void reset() {116            inner.reset();117        }118        public Statement apply(Statement statement, Description description, FrameworkMethod frameworkMethod, Object target) {119            return inner.apply(statement, description, frameworkMethod, target);120        }121    }122}123final class InstanceMethodRule<T extends MethodRule> extends Rule<T> {124    private final MethodRuleSupplier<T> factory;125    InstanceMethodRule(MethodRuleSupplier<T> factory) {126        this.factory = factory;127    }128    @Override129    T create() {130        return factory.get();131    }132    @Override133    Statement apply(Statement statement, Description description, FrameworkMethod frameworkMethod, Object target) {134        return current.apply(statement, frameworkMethod, target);135    }136}137final class InstanceTestRule<T extends TestRule> extends Rule<T> {138    private final TestRuleSupplier<T> factory;139    InstanceTestRule(TestRuleSupplier<T> factory) {140        this.factory = factory;141    }142    @Override143    T create() {144        return factory.get();145    }146    @Override147    Statement apply(Statement statement, Description description, FrameworkMethod frameworkMethod, Object target) {148        return current.apply(statement, description);149    }150}...

Source:JunitRuleTest.java

...82    }83    @Slf4j84    private static class MethodLoggingRule implements MethodRule {85        @Override86        public Statement apply(Statement base, FrameworkMethod method, Object target) {87            String flag = target.getClass().getSimpleName() + "." + method.getName();88            return new Statement() {89                @Override90                public void evaluate() throws Throwable {91                    Stopwatch watch = Stopwatch.createStarted();92                    base.evaluate();93                    log.info("finished {}, duration: {} ms.", flag, watch.elapsed(TimeUnit.MILLISECONDS));94                }95            };96        }97    }98    @Slf4j99    private static class LoggingRule implements TestRule {100        private int priority;101        public LoggingRule(int priority) {102            this.priority = priority;103        }104        @Override105        public Statement apply(Statement base, Description description) {106            return new Statement() {107                @Override108                public void evaluate() throws Throwable {109                    log.info("starting LoggingRule-{}.", priority);110                    base.evaluate();111                    log.info("finished LoggingRule-{}", priority);112                }113            };114        }115    }116}...

Source:ExpectedException.java

...35    public static ExpectedException none() {36        return new ExpectedException();37    }38    @Override39    public Statement apply(final Statement base, final Description description) {40        return expectedException.apply(base, description);41    }42    /**43     * Which exception to expect.44     */45    public void expect(final Class<? extends Throwable> expectedExceptionClass) {46        expectedException.expect(expectedExceptionClass);47    }48    /**49     * The exact exception message to expect.50     */51    public void expectMessage(@NonNls final String expectedExceptionMessage) {52        expectedException.expectMessage(equalTo(expectedExceptionMessage));53    }54    /**...

Source:ErrorHandlingConfigurationFailuresWaivesTestCase.java

...55  public void unknownErrorFilteringNotAllowed() throws Exception {56    loadConfiguration("org/mule/test/integration/exceptions/global-unreferenced-invalid-error-handler.xml");57  }58  @Override59  protected void applyConfiguration(DefaultMuleConfiguration muleConfiguration) {60    super.applyConfiguration(muleConfiguration);61    muleConfiguration.setMinMuleVersion(minMuleVersion);62  }63  private static String notFound(String type) {64    return format("Could not find error '%s'", type);65  }66}...

Source:AbstractFtpTestHarness.java

...28  public AbstractFtpTestHarness(String profile) {29    profileSystemProperty = new SystemProperty("spring.profiles.active", profile);30  }31  @Override32  public final Statement apply(Statement base, Description description) {33    base = applyAll(base, description, profileSystemProperty, expectedException);34    base = applyAll(base, description, getChildRules());35    return super.apply(base, description);36  }37  /**38   * @return {@link TestRule testRules} declared on the implementations which should also be applied39   */40  protected abstract TestRule[] getChildRules();41  @Override42  protected final void before() throws Throwable {43    doBefore();44  }45  /**46   * Template method for performing setup actions47   */48  protected void doBefore() throws Throwable {49  }50  /**51   * Delegates into {@link #doAfter()} and resets the {@link #expectedException}52   */53  @Override54  protected final void after() {55    try {56      doAfter();57    } catch (Exception e) {58      throw new RuntimeException(e);59    } finally {60      expectedException = ExpectedException.none();61    }62  }63  /**64   * Template method for performing cleanup actions65   */66  protected void doAfter() throws Exception {67  }68  /**69   * {@inheritDoc}70   */71  @Override72  public ExpectedException expectedException() {73    return expectedException;74  }75  private Statement applyAll(Statement base, Description description, TestRule... rules) {76    for (TestRule rule : rules) {77      base = rule.apply(base, description);78    }79    return base;80  }81  /**82   * {@inheritDoc}83   */84  @Override85  public void write(String folder, String fileName, String content) throws Exception {86    write(String.format("%s/%s", folder, fileName), content);87  }88}...

Source:ErrorCodeTest.java

...12    public TestName testName = new TestName();13    @Test14    public void testLookupInvalidErrorCode() {15        int invalidErrorCode = 1000000000;16        assertFalse(isValidErrorCode.apply(invalidErrorCode));17        exception.expect(RuntimeException.class);18        exception.expectMessage("No rpc server error code exists for 1000000000");19        getErrorCode.apply(invalidErrorCode);20    }21    @Test22    public void testLookupValidErrorCode() {23        assertTrue(isValidErrorCode.apply(RPC_WALLET_INSUFFICIENT_FUNDS.code()));24        ErrorCode errorCode = getErrorCode.apply(RPC_WALLET_INSUFFICIENT_FUNDS.code());25        assertEquals(RPC_WALLET_INSUFFICIENT_FUNDS, errorCode);26    }27    @Test28    public void testErrorCodeDescription() {29        assertTrue(isValidErrorCode.apply(RPC_INVALID_ADDRESS_OR_KEY.code()));30        ErrorCode errorCode = getErrorCode.apply(RPC_INVALID_ADDRESS_OR_KEY.code());31        assertEquals(RPC_INVALID_ADDRESS_OR_KEY.description(), "Invalid or non-wallet transaction id");32    }33}...

Source:RepeatUntilExpectedExceptionRule.java

...7import static com.bluecatcode.junit.rules.RepeatRule.RepeatStatement.createFromAnnotationWith;8public class RepeatUntilExpectedExceptionRule implements TestRule {9    private ExpectedException expectedException = ExpectedException.none();10    @Override11    public Statement apply(Statement statement, Description description) {12        Repeat repeat = description.getAnnotation(Repeat.class);13        Statement statement1 = createFromAnnotationWith(repeat, statement);14        Statement resultStatement = statement1 == null ? statement : statement1;15        return expectedException.apply(resultStatement, description);16    }17    public void expectMessage(Matcher<String> matcher) {18        expectedException.expectMessage(matcher);19    }20    public void expect(Class<? extends Throwable> type) {21        expectedException.expect(type);22    }23    public void expect(Matcher<?> matcher) {24        expectedException.expect(matcher);25    }26    public void expectMessage(String substring) {27        expectedException.expectMessage(substring);28    }29}...

Source:AbstractEllipticCurveTest.java

...10    @Rule11    public TestName testName = new TestName();12    protected EllipticCurve getCurve(int a, int b, int p) {13        return new EllipticCurve(testName.getMethodName(), CURVE_EQ,14                wrap.apply(a), wrap.apply(b), wrap.apply(p),15                null, null, null);16    }17    protected Point getPoint(EllipticCurve ec, int x, int y) {18        return ec.getPoint(wrap.apply(x), wrap.apply(y));19    }20}...

apply

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.junit.rules.ExpectedException;4public class ExpectedExceptionTest {5    public ExpectedException thrown = ExpectedException.none();6    public void testExceptionMessage() {7        thrown.expect(NullPointerException.class);8        thrown.expectMessage("My Exception Message");9        throw new NullPointerException("My Exception Message");10    }11    public void testExceptionMessageContains() {12        thrown.expect(NullPointerException.class);13        thrown.expectMessage("Exception Message");14        throw new NullPointerException("My Exception Message");15    }16    public void testExceptionCause() {17        NullPointerException cause = new NullPointerException("My Exception Message");18        thrown.expect(NullPointerException.class);19        thrown.expectCause(cause);20        throw new NullPointerException(cause);21    }22}23	at com.baeldung.junit.exception.ExpectedExceptionTest.testExceptionMessage(ExpectedExceptionTest.java:22)24	at com.baeldung.junit.exception.ExpectedExceptionTest.testExceptionMessageContains(ExpectedExceptionTest.java:28)25	at com.baeldung.junit.exception.ExpectedExceptionTest.testExceptionCause(ExpectedExceptionTest.java:34)

apply

Using AI Code Generation

1public class ExpectedExceptionTest {2    public ExpectedException thrown = ExpectedException.none();3    public void throwsNothing() {4    }5    public void throwsNullPointerException() {6        thrown.expect(NullPointerException.class);7        throw new NullPointerException();8    }9    public void throwsNullPointerExceptionWithMessage() {10        thrown.expect(NullPointerException.class);11        thrown.expectMessage("happened");12        thrown.expectMessage("here");13        throw new NullPointerException("Something happened here");14    }15    public void throwsNullPointerExceptionWithMessageContaining() {16        thrown.expect(NullPointerException.class);17        thrown.expectMessage("happened");18        thrown.expectMessage(containsString("here"));19        throw new NullPointerException("Something happened here");20    }21}22assertThrows() method23public class AssertThrowsTest {24    public void throwsNullPointerException() {25        Throwable exception = assertThrows(NullPointerException.class, () -> {26            throw new NullPointerException("Something happened here");27        });28        assertEquals("Something happened here", exception.getMessage());29    }30}31Assertions.assertThrows() method

apply

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.junit.rules.ExpectedException;4public class ExpectedExceptionTest {5	public ExpectedException thrown = ExpectedException.none();6	public void throwsNothing() {7	}8	public void throwsNullPointerException() {9		thrown.expect(NullPointerException.class);10		throw new NullPointerException();11	}12	public void throwsNullPointerExceptionWithMessage() {13		thrown.expect(NullPointerException.class);14		thrown.expectMessage("Hello");15		throw new NullPointerException("Hello");16	}17	public void throwsNullPointerExceptionWithMessageContaining() {18		thrown.expect(NullPointerException.class);19		thrown.expectMessage("Hello");20		throw new NullPointerException("Hello World");21	}22}

apply

Using AI Code Generation

1import org.junit.Test;2import org.junit.rules.ExpectedException;3public class ExpectedExceptionTest {4    public void testRule() throws Exception {5        ExpectedException thrown = ExpectedException.none();6        thrown.expect(IllegalArgumentException.class);7        thrown.expectMessage("a message");8        throw new IllegalArgumentException("a message");9    }10}11	at org.junit.rules.ExpectedExceptionTest.testRule(ExpectedExceptionTest.java:13)12Example 2: Using ExpectedException Rule with ExpectedException.none()13import org.junit.Test;14import org.junit.rules.ExpectedException;15public class ExpectedExceptionTest {16    public void testRule() throws Exception {17        ExpectedException thrown = ExpectedException.none();18        thrown.expect(IllegalArgumentException.class);19        thrown.expectMessage("a message");20        throw new IllegalArgumentException("a message");21    }22}23	at org.junit.rules.ExpectedExceptionTest.testRule(ExpectedExceptionTest.java:13)24Example 3: Using ExpectedException Rule with ExpectedException.none() method to test exception message25import org.junit.Test;26import org.junit.rules.ExpectedException;27public class ExpectedExceptionTest {28    public void testRule() throws Exception {29        ExpectedException thrown = ExpectedException.none();30        thrown.expect(IllegalArgumentException.class);31        thrown.expectMessage("a message");32        throw new IllegalArgumentException("a message");33    }34}35	at org.junit.rules.ExpectedExceptionTest.testRule(ExpectedExceptionTest.java:13)36Example 4: Using ExpectedException Rule with ExpectedException.none() method to test exception message with regex37import org.junit.Test;38import org.junit.rules.ExpectedException;39public class ExpectedExceptionTest {40    public void testRule() throws Exception {41        ExpectedException thrown = ExpectedException.none();42        thrown.expect(IllegalArgumentException.class);43        thrown.expectMessage("a message");44        throw new IllegalArgumentException("a message");45    }46}47	at org.junit.rules.ExpectedExceptionTest.testRule(ExpectedExceptionTest.java:13)

apply

Using AI Code Generation

1import org.junit.Rule;2import org.junit.Test;3import org.junit.rules.ExpectedException;4public class ExceptionTest {5    public ExpectedException thrown = ExpectedException.none();6    public void throwsNothing() {7    }8    public void throwsNullPointerException() {9        thrown.expect(NullPointerException.class);10        throw new NullPointerException();11    }12    public void throwsNullPointerExceptionWithMessage() {13        thrown.expect(NullPointerException.class);14        thrown.expectMessage("Hello");15        thrown.expectMessage("World");16        throw new NullPointerException("Hello World");17    }18    public void throwsNullPointerExceptionWithMessageContaining() {19        thrown.expect(NullPointerException.class);20        thrown.expectMessage("Hello");21        thrown.expectMessage("World");22        throw new NullPointerException("Hello World");23    }24}25import static org.junit.jupiter.api.Assertions.assertThrows;26import static org.junit.jupiter.api.Assertions.assertEquals;27import org.junit.jupiter.api.Test;28public class ExceptionTest {29    public void testExceptionMessage() {30        Exception exception = assertThrows(IllegalArgumentException.class, () -> {31            throw new IllegalArgumentException("a message");32        });33        String expectedMessage = "a message";34        String actualMessage = exception.getMessage();35        assertEquals(expectedMessage, actualMessage);36    }37}38import static org.junit.jupiter.api.Assertions.assertThrows;39import static org.junit.jupiter.api.Assertions.assertEquals;40import org.junit.jupiter.api.Test;41public class ExceptionTest {42    public void testExceptionMessage() {43        Exception exception = assertThrows(IllegalArgumentException.class, () -> {44            throw new IllegalArgumentException("a message");45        });46        String expectedMessage = "a message";47        String actualMessage = exception.getMessage();48        assertEquals(expectedMessage, actualMessage);49    }50}51import static org.junit.jupiter.api.Assertions.assertThrows;52import static org.junit.jupiter.api.Assertions.assertEquals;53import org.junit.jupiter.api.Test;54public class ExceptionTest {55    public void testExceptionMessage() {56        Exception exception = assertThrows(IllegalArgumentException.class, () ->

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