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

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

Source:LauncherTest.java Github

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...5public class LauncherTest {6 private final Launcher launcher = new Launcher();7 @Test8 void mainTest1(){9 org.assertj.core.api.Assertions.assertThatExceptionOfType(IllegalArgumentException.class).isThrownBy(() -> Launcher.main(new String[] {})).withMessage("il doit y avoir 1 ou 2 arguments pour fonctionner");10 }11 @Test12 void mainTest2(){13 org.assertj.core.api.Assertions.assertThatExceptionOfType(IllegalArgumentException.class).isThrownBy(() -> Launcher.main(new String[] {"9786","ok","ok"})).withMessage("il doit y avoir 1 ou 2 arguments pour fonctionner");14 }15 @Test16 void mainTest3(){17 org.assertj.core.api.Assertions.assertThatNoException().isThrownBy(() -> Launcher.main(new String[] {"9786"}));18 }19 @Test20 void mainTest4(){21 org.assertj.core.api.Assertions.assertThatNoException().isThrownBy(() -> Launcher.main(new String[] {"9786", "http://localhost:9786"}));22 }23}...

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Source:ClassPathFileLoaderTest.java Github

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2import org.assertj.core.api.Assertions;3import org.junit.jupiter.api.Test;4import java.util.stream.Stream;5import static org.assertj.core.api.Assertions.assertThat;6import static org.assertj.core.api.Assertions.assertThatExceptionOfType;7class ClassPathFileLoaderTest {8 @Test9 void loading_from_non_existing_file_throws() {10 assertThatExceptionOfType(IllegalArgumentException.class)11 .isThrownBy(() -> new ClassPathFileLoader().readLines("not-existing.txt"))12 .withMessage("No file named not-existing.txt in classPath");13 }14 @Test15 void loading_first_manifest() {16 Stream<String> lines = new ClassPathFileLoader().readLines("sample.txt");17 assertThat(lines).containsExactly("first line", "second line");18 }19}...

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assertThatExceptionOfType

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1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThatExceptionOfType;3public class 1 {4 public void test() {5 assertThatExceptionOfType(IllegalArgumentException.class).isThrownBy(() -> {6 throw new IllegalArgumentException("some exception");7 }).withMessage("some exception");8 }9}10import org.junit.Test;11import static org.assertj.core.api.Assertions.assertThatThrownBy;12public class 2 {13 public void test() {14 assertThatThrownBy(() -> {15 throw new IllegalArgumentException("some exception");16 }).isInstanceOf(IllegalArgumentException.class)17 .hasMessage("some exception");18 }19}20import org.junit.jupiter.api.Test;21import static org.junit.jupiter.api.Assertions.assertThrows;22public class 3 {23 public void test() {24 Exception exception = assertThrows(IllegalArgumentException.class, () -> {25 throw new IllegalArgumentException("some exception");26 });27 assertEquals("some exception", exception.getMessage());28 }29}30import org.junit.jupiter.api.Test;31import static org.junit.jupiter.api.Assertions.assertThrows;32public class 4 {33 public void test() {34 Exception exception = assertThrows(IllegalArgumentException.class, () -> {35 throw new IllegalArgumentException("some exception");36 });37 assertEquals("some exception", exception.getMessage());38 }39}40import org.junit.jupiter.api.Test;41import static org.junit.jupiter.api.Assertions.assertThrows;42public class 5 {43 public void test() {44 Exception exception = assertThrows(IllegalArgumentException.class, () -> {45 throw new IllegalArgumentException("some exception");46 });47 assertEquals("some exception", exception

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assertThatExceptionOfType

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1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Test1 {4 public void test1() {5 Assertions.assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> {6 throw new NullPointerException();7 });8 }9}10 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1619)11 at Test1.test1(Test1.java:8)12assertThatExceptionOfType() method13assertThatExceptionOfType(Class<? extends Throwable> expectedType).isThrownBy(ThrowingCallable shouldRaiseThrowable)14import org.assertj.core.api.Assertions;15import org.junit.Test;16public class Test1 {17 public void test1() {18 Assertions.assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> {19 throw new NullPointerException();20 });21 }22}23 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1619)24 at Test1.test1(Test1.java:8)

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assertThatExceptionOfType

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1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThatExceptionOfType;3public class AssertJException {4 public void testException() {5 assertThatExceptionOfType(IllegalArgumentException.class).isThrownBy(() -> {6 throw new IllegalArgumentException("Some message");7 }).withMessage("Some message");8 }9}10 at org.assertj.core.api.Assertions.fail(Assertions.java:1086)11 at org.assertj.core.api.Assertions.fail(Assertions.java:1076)12 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1043)13 at AssertJException.testException(AssertJException.java:10)

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assertThatExceptionOfType

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1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Test1 {4 public void test1() {5 Assertions.assertThatExceptionOfType(Exception.class)6 .isThrownBy(() -> {7 throw new Exception("Test");8 })9 .withMessage("Test");10 }11}12import org.assertj.core.api.Assertions;13import org.junit.Test;14public class Test2 {15 public void test2() {16 Assertions.assertThatExceptionOfType(Exception.class)17 .isThrownBy(() -> {18 throw new Exception("Test");19 })20 .withMessage("Test");21 }22}23import org.assertj.core.api.Assertions;24import org.junit.Test;25public class Test3 {26 public void test3() {27 Assertions.assertThatExceptionOfType(Exception.class)28 .isThrownBy(() -> {29 throw new Exception("Test");30 })31 .withMessage("Test");32 }33}34import org.assertj.core.api.Assertions;35import org.junit.Test;36public class Test4 {37 public void test4() {38 Assertions.assertThatExceptionOfType(Exception.class)39 .isThrownBy(() -> {40 throw new Exception("Test");41 })42 .withMessage("Test");43 }44}45import org.assertj.core.api.Assertions;46import org.junit.Test;47public class Test5 {48 public void test5() {49 Assertions.assertThatExceptionOfType(Exception.class)50 .isThrownBy(() -> {51 throw new Exception("Test");52 })53 .withMessage("Test");54 }55}56import org.assertj.core.api.Assertions;57import org.junit.Test;58public class Test6 {59 public void test6() {60 Assertions.assertThatExceptionOfType(Exception.class)61 .isThrownBy(() -> {62 throw new Exception("Test");63 })64 .withMessage("Test");65 }66}

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assertThatExceptionOfType

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1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThatExceptionOfType;3import org.junit.runner.JUnitCore;4import org.junit.runner.Result;5import org.junit.runner.notification.Failure;6public class AssertJExceptionTest {7 public void testException() {8 assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> {9 throw new NullPointerException();10 });11 }12 public static void main(String[] args) {13 Result result = JUnitCore.runClasses(AssertJExceptionTest.class);14 for (Failure failure : result.getFailures()) {15 System.out.println(failure.toString());16 }17 System.out.println(result.wasSuccessful());18 }19}20org.junit.ComparisonFailure: expected:<...ssertThatExceptionOfType([java.lang.NullPointerException]).isThrownBy(() -> {21throw new NullPointerException();22});23]> but was:<...ssertThatExceptionOfType([org.junit.ComparisonFailure]).isThrownBy(() -> {24throw new NullPointerException();25});26]> at AssertJExceptionTest.testException(AssertJExceptionTest.java:13)27How to use Assertions.assertThrows() method of org.junit.jupiter.api.Assertions class in JUnit 5?28How to use assertThrows() method of org.junit.jupiter.api.Assertions class in JUnit 5?29How to use assertThrows() method of org.junit.jupiter.api.Assertions class in JUnit 4?30How to use assertThrows() method of org.junit.Assert class in JUnit 4?31How to use assertThrows() method of org.junit.Assert class in JUnit 5?32How to use assertThrows() method of org.junit.jupiter.api.Assertions class?33How to use assertThrows() method of org.junit.jupiter.api.Assertions class in JUnit 4 to test a lambda expression?34How to use assertThrows() method of org.junit.jupiter.api.Assertions class in J

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assertThatExceptionOfType

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1package com.automationtesting.assertj;2import static org.assertj.core.api.Assertions.assertThatExceptionOfType;3import org.junit.Test;4public class AssertJException {5 public void testException() {6 assertThatExceptionOfType(NullPointerException.class)7 .isThrownBy(() -> {8 throw new NullPointerException("NullPointerException");9 }).withMessage("NullPointerException");10 }11}12 at org.assertj.core.api.Assertions.fail(Assertions.java:1329)13 at org.assertj.core.api.Assertions.failBecauseExceptionWasNotThrown(Assertions.java:1307)14 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1203)15 at com.automationtesting.assertj.AssertJException.testException(AssertJException.java:16)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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)21 at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)22 at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)23 at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)24 at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)25 at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)26 at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:366)27 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:100)28 at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)29 at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)30 at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)31 at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)32 at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)33 at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)

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assertThatExceptionOfType

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1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Test1 {4public void test1() {5Assertions.assertThatExceptionOfType(Exception.class)6.isThrownBy(() -> {7throw new Exception("Exception");8})9.withMessage("Exception")10.withStackTraceContaining("Test1.java");11}12}

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assertThatExceptionOfType

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1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThatExceptionOfType;3import java.io.File;4import java.io.FileInputStream;5import java.io.FileNotFoundException;6public class Test1 {7 public void test1() {8 assertThatExceptionOfType(FileNotFoundException.class)9 .isThrownBy(() -> new FileInputStream(new File("someFile.txt")))10 .withMessage("someFile.txt (The system cannot find the file specified)");11 }12}13Expected: someFile.txt (The system cannot find the file specified)14 but: was <someFile.txt (The system cannot find the file specified)>15Expected :someFile.txt (The system cannot find the file specified)16Actual :someFile.txt (The system cannot find the file specified)17Expected: someFile.txt (The system cannot find the file specified)18 but: was <someFile.txt (The system cannot find the file specified)>19Expected :someFile.txt (The system cannot find the file specified)20Actual :someFile.txt (The system cannot find the file specified)

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assertThatExceptionOfType

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1import static org.assertj.core.api.Assertions.assertThatExceptionOfType;2import java.io.IOException;3import java.io.UncheckedIOException;4import java.nio.file.Files;5import java.nio.file.Paths;6import java.util.List;7import java.util.function.Predicate;8import java.util.stream.Collectors;9public class Main {10 public static void main(String[] args) {11 String filename = "non-existent-file.txt";12 assertThatExceptionOfType(UncheckedIOException.class)13 .isThrownBy(() -> readLines(filename))14 .withCauseInstanceOf(IOException.class)15 .withMessageContaining(filename);16 }17 public static List<String> readLines(String filename) {18 try {19 return Files.lines(Paths.get(filename)).collect(Collectors.toList());20 } catch (IOException e) {21 throw new UncheckedIOException(e);22 }23 }24}25 at org.assertj.core.api.Assertions.fail(Assertions.java:1166)26 at org.assertj.core.api.Assertions.assertThatThrownBy(Assertions.java:1249)27 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1228)28 at Main.main(Main.java:9)

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