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

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

Source:GenericJaxbIOTest.java

...15 */16package org.optaplanner.core.impl.io.jaxb;17import static org.assertj.core.api.Assertions.assertThat;18import static org.assertj.core.api.Assertions.assertThatExceptionOfType;19import static org.assertj.core.api.Assertions.assertThatNullPointerException;20import static org.assertj.core.api.SoftAssertions.assertSoftly;21import java.io.StringReader;22import java.io.StringWriter;23import java.util.Objects;24import javax.xml.bind.annotation.XmlAttribute;25import javax.xml.bind.annotation.XmlRootElement;26import javax.xml.bind.annotation.XmlValue;27import org.junit.jupiter.api.Test;28import org.optaplanner.core.impl.io.OptaPlannerXmlSerializationException;29class GenericJaxbIOTest {30    private final GenericJaxbIO<DummyJaxbClass> xmlIO = new GenericJaxbIO<>(DummyJaxbClass.class);31    @Test32    void readWriteSimpleObject() {33        DummyJaxbClass original = new DummyJaxbClass(1, "");34        StringWriter stringWriter = new StringWriter();35        xmlIO.write(original, stringWriter);36        DummyJaxbClass marshalledObject = xmlIO.read(new StringReader(stringWriter.toString()));37        assertThat(marshalledObject).isEqualTo(original);38    }39    @Test40    void writeThrowsExceptionOnNullParameters() {41        assertSoftly(softly -> {42            softly.assertThat(assertThatNullPointerException().isThrownBy(() -> xmlIO.write(null, new StringWriter())));43            softly.assertThat(assertThatNullPointerException().isThrownBy(() -> xmlIO.write(new DummyJaxbClass(1, ""), null)));44        });45    }46    @Test47    void readThrowsExceptionOnNullParameter() {48        assertThatNullPointerException().isThrownBy(() -> new GenericJaxbIO<>(DummyJaxbClass.class).read(null));49    }50    @Test51    void readThrowsExceptionOnInvalidXml() {52        String invalidXml = "<unknownRootElement/>";53        StringReader stringReader = new StringReader(invalidXml);54        assertThatExceptionOfType(OptaPlannerXmlSerializationException.class).isThrownBy(() -> xmlIO.read(stringReader));55    }56    @Test57    void readOverridingNamespaceIsProtectedFromXXE() {58        String maliciousXml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n"59                + "<!DOCTYPE dummyJaxbClass [  \n"60                + "  <!ELEMENT dummyJaxbClass ANY >\n"61                + "  <!ENTITY xxe SYSTEM \"file:///etc/passwd\" >]"62                + ">"...

Source:StatistiekTest.java

2import org.junit.jupiter.api.Test;3import java.math.BigDecimal;4import static org.assertj.core.api.Assertions.assertThat;5import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;6import static org.assertj.core.api.Assertions.assertThatNullPointerException;7class StatistiekTest {8    @Test9    void hetGemiddeldeVan0En10Is5() {10        assertThat(Statistiek.getGemiddelde(new BigDecimal[]{BigDecimal.ZERO, BigDecimal.TEN})).isEqualByComparingTo("5");11    }12    @Test13    void hetGemiddeldeVanEenGetalIsDatGetal() {14        var enigGetal = BigDecimal.valueOf(1.23);15        assertThat(Statistiek.getGemiddelde(new BigDecimal[]{enigGetal})).isEqualByComparingTo(enigGetal);16    }17    @Test18    void hetGemiddeldeVanEenLegeVerzamelingKanJeNietBerekenen() {19        assertThatIllegalArgumentException().isThrownBy(() -> Statistiek.getGemiddelde(new BigDecimal[]{}));20    }21    @Test22    void hetGemiddeldeVanNullKanJeNietBerekenen() {23        assertThatNullPointerException().isThrownBy(() -> Statistiek.getGemiddelde(null));24    }25    @Test26    void eenArrayElementMagNietNullBevatten() {27        assertThatNullPointerException().isThrownBy(() -> Statistiek.getGemiddelde(new BigDecimal[]{null}));28    }29}...

assertThatNullPointerException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class AssertionsTest {4    public void testAssertThatNullPointerException() {5        String str = null;6        Assertions.assertThatNullPointerException().isThrownBy(() -> {7            str.length();8        });9    }10}11Related Posts: How to use assertThatIllegalArgumentException() method of org.assertj.core.api.Assertions class in JUnit12How to use assertThatNullPointerException() metho

assertThatNullPointerException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2public class 1 {3    public static void main(String[] args) {4        Assertions.assertThatNullPointerException().isThrownBy(() -> {5            throw new NullPointerException();6        });7    }8}9import org.assertj.core.api.Assertions;10public class 2 {11    public static void main(String[] args) {12        Assertions.assertThatNullPointerException().isThrownBy(() -> {13            throw new NullPointerException();14        });15    }16}17import org.assertj.core.api.Assertions;18public class 3 {19    public static void main(String[] args) {20        Assertions.assertThatNullPointerException().isThrownBy(() -> {21            throw new NullPointerException();22        });23    }24}25import org.assertj.core.api.Assertions;26public class 4 {27    public static void main(String[] args) {28        Assertions.assertThatNullPointerException().isThrownBy(() -> {29            throw new NullPointerException();30        });31    }32}33import org.assertj.core.api.Assertions;34public class 5 {35    public static void main(String[] args) {36        Assertions.assertThatNullPointerException().isThrownBy(() -> {37            throw new NullPointerException();38        });39    }40}41import org.assertj.core.api.Assertions;42public class 6 {43    public static void main(String[] args) {44        Assertions.assertThatNullPointerException().isThrownBy(() -> {45            throw new NullPointerException();46        });47    }48}49import org.assertj.core.api.Assertions;50public class 7 {51    public static void main(String[] args) {52        Assertions.assertThatNullPointerException().isThrownBy(() -> {53            throw new NullPointerException();54        });55    }56}57import org.assertj.core.api.Assertions;58public class 8 {59    public static void main(String[] args) {60        Assertions.assertThatNullPointerException().isThrownBy(() -> {61            throw new NullPointerException();62        });63    }64}

assertThatNullPointerException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class AssertionsAssertThatNullPointerExceptionTest {4	public void testAssertThatNullPointerException() {5		Assertions.assertThatNullPointerException().isThrownBy(() -> {6			throw new NullPointerException("The Message");7		}).withMessage("The Message");8	}9}10	at org.assertj.core.api.Assertions.assertThatNullPointerException(As

assertThatNullPointerException

Using AI Code Generation

1import org.junit.Test;2import java.util.ArrayList;3import java.util.List;4import static org.assertj.core.api.Assertions.assertThatNullPointerException;5public class AssertJNullPointerExceptionTest {6    public void testAssertJNullPointerException() {7        List<String> list = new ArrayList<>();8        list.add("one");9        list.add("two");10        list.add("three");11        assertThatNullPointerException().isThrownBy(() -> {12            list.get(3);13        });14    }15}16	at org.assertj.core.api.ThrowableAssert.catchThrowable(ThrowableAssert.java:57)17	at org.assertj.core.api.Assertions.catchThrowable(Assertions.java:1532)18	at org.assertj.core.api.Assertions.catchThrowable(Assertions.java:1504)19	at org.assertj.core.api.Assertions.assertThatNullPointerException(Assertions.java:1281)20	at AssertJNullPointerExceptionTest.testAssertJNullPointerException(AssertJNullPointerExceptionTest.java:13)21	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)22	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)23	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)24	at java.lang.reflect.Method.invoke(Method.java:498)25	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)26	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)27	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)28	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)29	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)30	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)31	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)32	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)33	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)34	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)35	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)36	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)37	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)38	at org.junit.runner.JUnitCore.run(JUnitCore.java:

assertThatNullPointerException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class AssertionsTest {4public void test() {5Assertions.assertThatNullPointerException().isThrownBy(() -> {6throw new NullPointerException();7});8}9}10at org.assertj.core.api.Assertions.fail(Assertions.java:1153)11at org.assertj.core.api.Assertions.assertThatNullPointerException(Assertions.java:1162)12at org.assertj.core.api.Assertions.assertThatNullPointerException(Assertions.java:1158)13at AssertionsTest.test(AssertionsTest.java:9)14at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)15at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)16at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)17at java.lang.reflect.Method.invoke(Method.java:498)18at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)19at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)20at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)21at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)22at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)23at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)24at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)25at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)26at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)27at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)28at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)29at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)30at org.junit.runners.ParentRunner.run(ParentRunner.java:363)31at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)32at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)33at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)34at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)

assertThatNullPointerException

Using AI Code Generation

1package org.kodejava.example.assertj;2import org.assertj.core.api.Assertions;3public class AssertJExample4 {4    public static void main(String[] args) {5        String name = null;6        Assertions.assertThatNullPointerException().isThrownBy(() -> {7            if (name.equals("KodeJava")) {8                System.out.println("Name is KodeJava");9            }10        });11    }12}13How can we use assertThatNullPointerException().isThrownBy(() -> name.equals("KodeJava"));? I am getting error14I'm getting this error: java.lang.NoSuchMethodError: org.assertj.core.api.ThrowableAssert$ThrowableAssertAlternative.isThrownBy(Ljava/lang/Runnable;)Lorg/assertj/core/api/ThrowableAssertAlternative;15I'm getting this error: java.lang.NoSuchMethodError: org.assertj.core.api.ThrowableAssert$ThrowableAssertAlternative.isThrownBy(Ljava/lang/Runnable;)Lorg/assertj/core/api/ThrowableAssertAlternative;16java.lang.NoSuchMethodError: org.assertj.core.api.ThrowableAssert$ThrowableAssertAlternative.isThrownBy(Ljava/lang/Runnable;)Lorg/assertj/core/api/ThrowableAssertAlternative;17java.lang.NoSuchMethodError: org.assertj.core.api.ThrowableAssert$ThrowableAssertAlternative.isThrownBy(Ljava/lang/Runnable;)Lorg/assertj/core/api/ThrowableAssertAlternative;18java.lang.NoSuchMethodError: org.assertj.core.api.ThrowableAssert$ThrowableAssertAlternative.isThrownBy(Ljava/lang/Runnable;)Lorg/assertj/core/api/ThrowableAssertAlternative;

assertThatNullPointerException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.api.ThrowableAssert.ThrowingCallable;3public class AssertJTest {4    public static void main(String[] args) {5        ThrowingCallable callable = new ThrowingCallable() {6            public void call() throws Throwable {7                throw new NullPointerException();8            }9        };10        Assertions.assertThatNullPointerException().isThrownBy(callable);11    }12}

assertThatNullPointerException

Using AI Code Generation

1package com.automationtesting.assertions;2import static org.assertj.core.api.Assertions.assertThatNullPointerException;3import org.testng.annotations.Test;4public class _1_AssertThatNullPointerException {5	public void test1() {6		String s = null;7		assertThatNullPointerException().isThrownBy(() -> {8			s.length();9		}).withMessage("s should not be null");10	}11}12	at org.assertj.core.api.ThrowableAssert.catchThrowable(ThrowableAssert.java:62)13	at org.assertj.core.api.AssertionsForClassTypes.catchThrowable(AssertionsForClassTypes.java:1032)14	at org.assertj.core.api.AssertionsForClassTypes.assertThatNullPointerException(AssertionsForClassTypes.java:1008)15	at com.automationtesting.assertions._1_AssertThatNullPointerException.test1(_1_AssertThatNullPointerException.java:14)16	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)17	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)18	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)19	at java.lang.reflect.Method.invoke(Method.java:498)20	at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)21	at org.testng.internal.Invoker.invokeMethod(Invoker.java:583)22	at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:719)23	at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:989)24	at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)25	at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)26	at org.testng.TestRunner.privateRun(TestRunner.java:648)27	at org.testng.TestRunner.run(TestRunner.java:505)28	at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)29	at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)30	at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)31	at org.testng.SuiteRunner.run(SuiteRunner.java:364)32	at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)33	at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)34	at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)35	at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)36	at org.testng.TestNG.runSuites(TestNG.java:

assertThatNullPointerException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2public class AssertjNullPointer {3public static void main(String args[]) {4String string = null;5Assertions.assertThatNullPointerException().isThrownBy(() -> string.length());6}7}8import org.assertj.core.api.Assertions;9public class AssertjNullPointer {10public static void main(String args[]) {11String string = null;12Assertions.assertThatNullPointerException().isThrownBy(() -> string.length());13}14}15import org.assertj.core.api.Assertions;16public class AssertjNullPointer {17public static void main(String args[]) {18String string = null;19Assertions.assertThatNullPointerException().isThrownBy(() -> string.length());20}21}22import org.assertj.core.api.Assertions;23public class AssertjNullPointer {24public static void main(String args[]) {25String string = null;26Assertions.assertThatNullPointerException().isThrownBy(() -> string.length());27}28}29import org.assertj.core.api.Assertions;30public class AssertjNullPointer {31public static void main(String args[]) {32String string = null;33Assertions.assertThatNullPointerException().isThrownBy(() -> string.length());34}35}36import org.assertj.core.api.Assertions;37public class AssertjNullPointer {38public static void main(String args[]) {39String string = null;40Assertions.assertThatNullPointerException().isThrownBy(() -> string.length());41}42}

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