How to use catchNullPointerException method of org.assertj.core.api.Assertions class

Best Assertj code snippet using org.assertj.core.api.Assertions.catchNullPointerException

Source:Assertions_catchNullPointerException_Test.java Github

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...11 * Copyright 2012-2022 the original author or authors.12 */13package org.assertj.core.api;14import static org.assertj.core.api.Assertions.assertThat;15import static org.assertj.core.api.Assertions.catchNullPointerException;16import static org.assertj.core.api.Assertions_catchThrowable_Test.codeThrowing;17import static org.assertj.core.api.BDDAssertions.then;18import static org.assertj.core.util.AssertionsUtil.expectAssertionError;19import static org.mockito.Mockito.mock;20import org.assertj.core.api.ThrowableAssert.ThrowingCallable;21import org.junit.jupiter.api.Test;22class Assertions_catchNullPointerException_Test {23 @Test24 void catchNullPointerException_should_fail_with_good_message_if_wrong_type() {25 // GIVEN26 ThrowingCallable code = () -> catchNullPointerException(raisingException("boom!!"));27 // WHEN28 AssertionError assertionError = expectAssertionError(code);29 // THEN30 assertThat(assertionError).hasMessageContainingAll(Exception.class.getName(), NullPointerException.class.getName());31 }32 @Test33 void catchNullPointerException_should_succeed_and_return_actual_instance_with_correct_class() {34 // GIVEN35 final NullPointerException expected = new NullPointerException("boom!!");36 // WHEN37 NullPointerException actual = catchNullPointerException(codeThrowing(expected));38 // THEN39 then(actual).isSameAs(expected);40 }41 @Test42 void catchNullPointerException_should_succeed_and_return_null_if_no_exception_thrown() {43 // WHEN44 NullPointerException actual = catchNullPointerException(() -> {});45 // THEN46 then(actual).isNull();47 }48 @Test49 void catchNullPointerException_should_catch_mocked_throwable() {50 // GIVEN51 NullPointerException exception = mock(NullPointerException.class);52 // WHEN53 Throwable actual = catchNullPointerException(codeThrowing(exception));54 // THEN55 then(actual).isSameAs(exception);56 }57 static ThrowingCallable raisingException(final String reason) {58 return codeThrowing(new Exception(reason));59 }60}...

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Source:EntryPointAssertions_catchNullPointerException_Test.java Github

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...16import java.util.stream.Stream;17import org.assertj.core.api.ThrowableAssert.ThrowingCallable;18import org.junit.jupiter.params.ParameterizedTest;19import org.junit.jupiter.params.provider.MethodSource;20class EntryPointAssertions_catchNullPointerException_Test extends EntryPointAssertionsBaseTest {21 private static final NullPointerException NULL_POINTER_EXCEPTION = new NullPointerException();22 @ParameterizedTest23 @MethodSource("catchNullPointerExceptions")24 void should_catch_NullPointerException(Function<ThrowingCallable, NullPointerException> catchNullPointerException) {25 // GIVEN26 ThrowingCallable throwingCallable = () -> {27 throw NULL_POINTER_EXCEPTION;28 };29 // WHEN30 NullPointerException throwable = catchNullPointerException.apply(throwingCallable);31 // THEN32 then(throwable).isSameAs(NULL_POINTER_EXCEPTION);33 }34 private static Stream<Function<ThrowingCallable, NullPointerException>> catchNullPointerExceptions() {35 return Stream.of(Assertions::catchNullPointerException, BDDAssertions::catchNullPointerException, withAssertions::catchNullPointerException);36 }37}...

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1import static org.assertj.core.api.Assertions.catchThrowable;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.assertThatThrownBy;4import static org.assertj.core.api.Assertions.catchThrowableOfType;5import static org.assertj.core.api.Assertions.catchThrowableByType;6import java.io.IOException;7import java.util.ArrayList;8import java.util.List;9import org.assertj.core.api.ThrowableAssert.ThrowingCallable;10public class Test {11 public static void main(String[] args) {12 ThrowingCallable throwingCallable = new ThrowingCallable() {13 public void call() throws Throwable {14 throw new NullPointerException("NPE");15 }16 };17 Throwable throwable = catchThrowable(throwingCallable);18 assertThat(throwable).isInstanceOf(NullPointerException.class).hasMessage("NPE");19 assertThatThrownBy(throwingCallable).isInstanceOf(NullPointerException.class).hasMessage("NPE");20 ThrowingCallable throwingCallable1 = new ThrowingCallable() {21 public void call() throws Throwable {22 throw new IOException("IOE");23 }24 };25 IOException ioException = catchThrowableOfType(throwingCallable1, IOException.class);26 assertThat(ioException).hasMessage("IOE");27 ThrowingCallable throwingCallable2 = new ThrowingCallable() {28 public void call() throws Throwable {29 throw new RuntimeException("RE");30 }31 };32 RuntimeException runtimeException = catchThrowableByType(throwingCallable2, RuntimeException.class);33 assertThat(runtimeException).hasMessage("RE");34 ThrowingCallable throwingCallable3 = new ThrowingCallable() {35 public void call() throws Throwable {36 throw new RuntimeException("RE");

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catchNullPointerException

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1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Test1 {4 public void test1() {5 Assertions.catchThrowableOfType(() -> {6 throw new NullPointerException();7 }, NullPointerException.class);8 }9}10 at org.assertj.core.api.Assertions.catchThrowableOfType(Assertions.java:1004)11 at Test1.test1(Test1.java:9)12import org.assertj.core.api.Assertions;13import org.junit.Test;14public class Test2 {15 public void test2() {16 Assertions.assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> {17 throw new NullPointerException();18 });19 }20}21 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:965)22 at Test2.test2(Test2.java:9)23import org.assertj.core.api.Assertions;24import org.junit.Test;25public class Test3 {26 public void test3() {27 Assertions.assertThatThrownBy(() -> {28 throw new NullPointerException();29 }).isInstanceOf(NullPointerException.class);30 }31}32 at org.assertj.core.api.Assertions.assertThatThrownBy(Assertions.java:942)33 at Test3.test3(Test3.java:9)34import org.assertj.core.api.Assertions;35import org.junit.Test;36public class Test4 {37 public void test4() {38 Assertions.assertThatCode(() -> {39 throw new NullPointerException();40 }).isInstanceOf(NullPointerException.class);41 }42}43 at org.assertj.core.api.Assertions.assertThatCode(Assertions.java:917)44 at Test4.test4(Test4.java:9)45import org.assertj.core.api.Assertions;46import org.junit.Test;47public class Test5 {48 public void test5() {49 Assertions.assertThat(() -> {

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catchNullPointerException

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1Assertions.catchNullPointerException().isThrownBy(() -> {2});3Assertions.catchThrowableOfType(() -> {4}, NullPointerException.class);5Assertions.catchThrowable(() -> {6});7Assertions.assertThatThrownBy(() -> {8}).isInstanceOf(NullPointerException.class);9Assertions.assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> {10});11Assertions.assertThatCode(() -> {12}).isInstanceOf(NullPointerException.class);13Assertions.assertThat(() -> {14}).isInstanceOf(NullPointerException.class);15Assertions.assertThatNullPointerException().isThrownBy(() -> {16});17Assertions.assertThatIllegalArgumentException().isThrownBy(() -> {18});19Assertions.assertThatIllegalStateException().isThrownBy(() -> {20});21Assertions.assertThatExceptionOfType(IllegalArgumentException.class).isThrownBy(() -> {22});23Assertions.assertThatExceptionOfType(IllegalStateException.class).isThrownBy(() -> {24});25Assertions.assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(() -> {26});27Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> {28});

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catchNullPointerException

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1package com.automationrhapsody.junit5;2import static org.assertj.core.api.Assertions.catchThrowable;3import static org.assertj.core.api.Assertions.assertThat;4import org.junit.jupiter.api.Test;5class AssertJCatchThrowableTest {6 void catchThrowableTest() {7 Throwable thrown = catchThrowable(() -> {8 throw new NullPointerException("NullPointerException");9 });10 assertThat(thrown).isInstanceOf(NullPointerException.class);11 assertThat(thrown).hasMessage("NullPointerException");12 }13}14 at com.automationrhapsody.junit5.AssertJCatchThrowableTest.lambda$catchThrowableTest$0(AssertJCatchThrowableTest.java:16)15 at org.assertj.core.api.ThrowableAssert.catchThrowable(ThrowableAssert.java:55)16 at org.assertj.core.api.Assertions.catchThrowable(Assertions.java:1633)17 at com.automationrhapsody.junit5.AssertJCatchThrowableTest.catchThrowableTest(AssertJCatchThrowableTest.java:15)18 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)19 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)20 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)21 at java.base/java.lang.reflect.Method.invoke(Method.java:566)22 at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)23 at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)24 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:171)25 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)26 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)27 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)28 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)29 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)30 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)31 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:

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catchNullPointerException

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1import org.assertj.core.api.Assertions;2public class Test {3 public static void main(String[] args) {4 Assertions.assertThrows(NullPointerException.class, () -> {5 throw new NullPointerException();6 });7 }8}9 at org.assertj.core.api.Assertions.assertThrows(Assertions.java:1740)10 at Test.main(Test.java:5)11Recommended Posts: Java | assertThrows() method12Java | assertDoesNotThrow() method13Java | assertArrayEquals() method14Java | assertSame() method15Java | assertNotSame() method16Java | assertEquals() method17Java | assertNotNull() method18Java | assertNull() method19Java | assertNotEquals() method

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catchNullPointerException

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1import org.assertj.core.api.Assertions;2import java.util.ArrayList;3public class Test {4 public static void main(String[] args) {5 ArrayList<String> list = new ArrayList<>();6 Assertions.assertThatNullPointerException().isThrownBy(() -> {7 list.get(0);8 });9 }10}11 at org.assertj.core.api.AbstractThrowableAssert.isThrownBy(AbstractThrowableAssert.java:130)12 at org.assertj.core.api.Assertions.assertThatNullPointerException(Assertions.java:1168)13 at Test.main(1.java:9)143. assertThatNullPointerException().isThrownByCode()15import org.assertj.core.api.Assertions;16import java.util.ArrayList;17public class Test {18 public static void main(String[] args) {19 ArrayList<String> list = new ArrayList<>();20 Assertions.assertThatNullPointerException().isThrownByCode(() -> {21 list.get(0);22 });23 }24}25 at org.assertj.core.api.AbstractThrowableAssert.isThrownByCode(AbstractThrowableAssert.java:106)26 at org.assertj.core.api.Assertions.assertThatNullPointerException(Assertions.java:1177)27 at Test.main(1.java:9)284. assertThatNullPointerException().isThrownByCode().withMessage()29import org.assertj.core.api.Assertions;30import java.util.ArrayList;31public class Test {32 public static void main(String[] args) {33 ArrayList<String> list = new ArrayList<>();34 Assertions.assertThatNullPointerException().isThrownByCode(() -> {35 list.get(0

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1import org.assertj.core.api.Assertions;2public class AssertionsExample {3 public static void main(String[] args) {4 Assertions.assertThrows(NullPointerException.class, () -> {5 throw new NullPointerException("NullPointerException");6 });7 }8}

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catchNullPointerException

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1import org.assertj.core.api.Assertions;2public class AssertionsTest {3 public static void main(String[] args) {4 Assertions.catchThrowableOfType(() -> {5 throw new NullPointerException("null pointer exception");6 }, NullPointerException.class);7 }8}9Recommended Posts: Java | Assertions.assertThrows() method10Java | Assertions.assertThatThrownBy() method11Java | Assertions.catchThrowable() method12Java | Assertions.catchThrowableOfType() method13Java | Assertions.catchThrowable() method14Java | Assertions.catchThrowableOfType() method15Java | Assertions.assertThat() method16Java | Assertions.assertThatThrownBy() method17Java | Assertions.assertThrows() method

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1import static org.assertj.core.api.Assertions.*;2import org.junit.Test;3public class Test1 {4 public void test1() {5 catchThrowableOfType(() -> {throw new NullPointerException();}, NullPointerException.class);6 }7}8import static org.assertj.core.api.Assertions.*;9import org.junit.Test;10public class Test1 {11 public void test1() {12 catchThrowableOfType(() -> {throw new NullPointerException();}, NullPointerException.class);13 }14}15at org.junit.Assert.assertEquals(Assert.java:115)16at org.junit.Assert.assertEquals(Assert.java:144)17at Test1.test1(Test1.java:6)18import static org.assertj.core.api.Assertions.*;19import org.junit.Test;20public class Test1 {21 public void test1() {22 assertThatCode(() -> {throw new NullPointerException();}).isInstanceOf(NullPointerException.class);23 }24}25at org.assertj.core.api.AssertProvider.isInstanceOf(AssertProvider.java:50)26at org.assertj.core.api.AbstractAssert.isInstanceOf(AbstractAssert.java:192)27at Test1.test1(Test1.java:6)

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catchNullPointerException

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1import org.junit.Test;2import static org.assertj.core.api.Assertions.catchThrowable;3import static org.assertj.core.api.Assertions.assertThat;4public class TestClass {5 public void test() {6 Throwable thrown = catchThrowable(() -> {7 throw new NullPointerException("boom!");8 });9 assertThat(thrown).isInstanceOf(NullPointerException.class).hasMessage("boom!");10 }11}12 at TestClass.test(TestClass.java:9)13 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)14 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:

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catchNullPointerException

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1import org.assertj.core.api.Assertions;2public class Test assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.assertThatThrownBy;4import static org.assertj.core.api.Assertions.catchThrowableOfType;5import static org.assertj.core.api.Assertions.catchThrowableByType;6import java.io.IOException;7import java.util.ArrayList;8import java.util.List;9import org.assertj.core.api.ThrowableAssert.ThrowingCallable;10public class Test {11 public static void main(String[] args) {12 ThrowingCallable throwingCallable = new ThrowingCallable() {13 public void call() throws Throwable {14 throw new NullPointerException("NPE");15 }16 };17 Throwable throwable = catchThrowable(throwingCallable);18 assertThat(throwable).isInstanceOf(NullPointerException.class).hasMessage("NPE");19 assertThatThrownBy(throwingCallable).isInstanceOf(NullPointerException.class).hasMessage("NPE");20 ThrowingCallable throwingCallable1 = new ThrowingCallable() {21 public void call() throws Throwable {

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1import org.assertj.core.api.Assertions;2public class AssertionsExample {3 public static void main(String[] args) {4 Assertions.assertThrows(NullPointerException.class, () -> {5 throw new NullPointerException("NullPointerException");6 });7 }8}9Previous Page Print Page Next P ge throw new IOException("IOE");10 }11 };12 IOException ioException = catchThrowableOfType(throwingCallable1, IOException.class);13 assertThat(ioException).hasMessage("IOE");14 ThrowingCallable throwingCallable2 = new ThrowingCallable() {15 public void call() throws Throwable {16 throw new RuntimeException("RE");17 }18 };19 RuntimeException runtimeException = catchThrowableByType(throwingCallable2, RuntimeException.class);20 assertThat(runtimeException).hasMessage("RE");21 ThrowingCallable throwingCallable3 = new ThrowingCallable() {22 public void call() throws Throwable {23 throw new RuntimeException("RE");

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1package com.automationrhapsody.junit5;2import static org.assertj.core.api.Assertions.catchThrowable;3import static org.assertj.core.api.Assertions.assertThat;4import org.junit.jupiter.api.Test;5class AssertJCatchThrowableTest {6 void catchThrowableTest() {7 Throwable thrown = catchThrowable(() -> {8 throw new NullPointerException("NullPointerException");9 });10 assertThat(thrown).isInstanceOf(NullPointerException.class);11 assertThat(thrown).hasMessage("NullPointerException");12 }13}14 at com.automationrhapsody.junit5.AssertJCatchThrowableTest.lambda$catchThrowableTest$0(AssertJCatchThrowableTest.java:16)15 at org.assertj.core.api.ThrowableAssert.catchThrowable(ThrowableAssert.java:55)16 at org.assertj.core.api.Assertions.catchThrowable(Assertions.java:1633)17 at com.automationrhapsody.junit5.AssertJCatchThrowableTest.catchThrowableTest(AssertJCatchThrowableTest.java:15)18 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)19 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)20 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)21 at java.base/java.lang.reflect.Method.invoke(Method.java:566)22 at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)23 at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:115)24 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:171)25 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)26 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:167)27 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:114)28 at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:59)29 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)30 at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)31 at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:

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1import org.assertj.core.api.Assertions;2public class Test {3 public static void main(String[] args) {4 Assertions.assertThrows(NullPointerException.class, () -> {5 throw new NullPointerException();6 });7 }8}9 at org.assertj.core.api.Assertions.assertThrows(Assertions.java:1740)10 at Test.main(Test.java:5)11Recommended Posts: Java | assertThrows() method12Java | assertDoesNotThrow() method13Java | assertArrayEquals() method14Java | assertSame() method15Java | assertNotSame() method16Java | assertEquals() method17Java | assertNotNull() method18Java | assertNull() method19Java | assertNotEquals() method

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catchNullPointerException

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1import org.assertj.core.api.Assertions;2public class AssertionsExample {3 public static void main(String[] args) {4 Assertions.assertThrows(NullPointerException.class, () -> {5 throw new NullPointerException("NullPointerException");6 });7 }8}

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catchNullPointerException

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1import org.assertj.core.api.Assertions;2public class AssertionsTest {3 public static void main(String[] args) {4 Assertions.catchThrowableOfType(() -> {5 throw new NullPointerException("null pointer exception");6 }, NullPointerException.class);7 }8}9Recommended Posts: Java | Assertions.assertThrows() method10Java | Assertions.assertThatThrownBy() method11Java | Assertions.catchThrowable() method12Java | Assertions.catchThrowableOfType() method13Java | Assertions.catchThrowable() method14Java | Assertions.catchThrowableOfType() method15Java | Assertions.assertThat() method16Java | Assertions.assertThatThrownBy() method17Java | Assertions.assertThrows() method

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