KaneAI - World’s First E2E Software Testing Agent.Signup for Private Beta 
How to use assertThatReflectiveOperationException method of org.assertj.core.api.Assertions class
Best Assertj code snippet using org.assertj.core.api.Assertions.assertThatReflectiveOperationException
Source:SoftAssertions_ThrowableTypeAssert_Test.java 
...81 new IOException("boom")),82 arguments(softAssertionFunction("assertThatIndexOutOfBoundsException",83 softly -> softly.assertThatIndexOutOfBoundsException()),84 new IndexOutOfBoundsException("boom")),85 arguments(softAssertionFunction("assertThatReflectiveOperationException",86 softly -> softly.assertThatReflectiveOperationException()),87 new ReflectiveOperationException("boom")));88 }89 private static <T extends Throwable> Function<SoftAssertions, ThrowableTypeAssert<T>> softAssertionFunction(String assertionMethod,90 Function<SoftAssertions, ThrowableTypeAssert<T>> softAssertionsFunction) {91 return new SoftAssertionsFunction<>(assertionMethod, softAssertionsFunction);92 }93 // just here to get a nice toString for the ParameterizedTest display name94 private static class SoftAssertionsFunction<T extends Throwable> implements Function<SoftAssertions, ThrowableTypeAssert<T>> {95 private Function<SoftAssertions, ThrowableTypeAssert<T>> function;96 private String assertionMethod;97 SoftAssertionsFunction(String assertionMethod, Function<SoftAssertions, ThrowableTypeAssert<T>> softAssertionsFunction) {98 this.function = softAssertionsFunction;99 this.assertionMethod = assertionMethod;100 }...
Source:Assertions_assertThatReflectiveOperationException_Test.java
...11 * Copyright 2012-2022 the original author or authors.12 */13package org.assertj.core.api;14import static java.lang.String.format;15import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;16import static org.assertj.core.api.BDDAssertions.then;17import static org.assertj.core.test.ThrowingCallableFactory.codeThrowing;18import static org.assertj.core.util.AssertionsUtil.expectAssertionError;19import org.assertj.core.api.ThrowableAssert.ThrowingCallable;20import org.junit.jupiter.api.Test;21class Assertions_assertThatReflectiveOperationException_Test {22 @Test23 void should_pass_when_throw_ReflectiveOperationException() {24 assertThatReflectiveOperationException().isThrownBy(codeThrowing(new ReflectiveOperationException()));25 }26 @Test27 void should_fail_when_throw_wrong_type() {28 // GIVEN29 ThrowingCallable throwingCallable = () -> assertThatReflectiveOperationException().isThrownBy(codeThrowing(new Error()));30 // WHEN31 AssertionError assertionError = expectAssertionError(throwingCallable);32 // THEN33 then(assertionError).hasMessageContainingAll(Error.class.getName(), ReflectiveOperationException.class.getName());34 }35 @Test36 void should_fail_when_no_exception_thrown() {37 // GIVEN38 ThrowingCallable throwingCallable = () -> assertThatReflectiveOperationException().isThrownBy(() -> {});39 // WHEN40 AssertionError assertionError = expectAssertionError(throwingCallable);41 // THEN42 then(assertionError).hasMessage(format("%nExpecting code to raise a throwable."));43 }44}...
assertThatReflectiveOperationException
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.junit.jupiter.api.Test;3import org.junit.jupiter.api.function.Executable;4import static org.assertj.core.api.Assertions.assertThat;5import static org.assertj.core.api.Assertions.assertThatThrownBy;6import static org.assertj.core.api.Assertions.assertThatExceptionOfType;7import static org.assertj.core.api.Assertions.assertThatNoException;8import static org.assertj.core.api.Assertions.assertThatCode;9import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;10import static org.assertj.core.api.Assertions.assertThatIllegalStateException;11import static org.assertj.core.api.Assertions.assertThatNullPointerException;12import static org.assertj.core.api.Assertions.assertThatObject;13import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;14import static org.assertj.core.api.Assertions.assertThatNoCause;15import static org.assertj.core.api.Assertions.assertThatExceptionOfType;16import static org.assertj.core.api.Assertions.assertThatNullPointerException;17import static org.assertj.core.api.Assertions.assertThatIllegalStateException;18import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;19import static org.assertj.core.api.Assertions.assertThatCode;20import static org.assertj.core.api.Assertions.assertThatNoException;21import static org.assertj.core.api.Assertions.assertThatExceptionOfType;22import static org.assertj.core.api.Assertions.assertThatNullPointerException;23import static org.assertj.core.api.Assertions.assertThatIllegalStateException;24import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;25import static org.assertj.core.api.Assertions.assertThatCode;26import static org.assertj.core.api.Assertions.assertThatNoException;27import static org.assertj.core.api.Assertions.assertThatExceptionOfType;28import static org.assertj.core.api.Assertions.assertThatNullPointerException;29import static org.assertj.core.api.Assertions.assertThatIllegalStateException;30import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;31import static org.assertj.core.api.Assertions.assertThatCode;32import static org.assertj.core.api.Assertions.assertThatNoException;33import static org.assertj.core.api.Assertions.assertThatExceptionOfType;34import static org.assertj.core.api.Assertions.assertThatNullPointerException;35import static org.assertj.core.api.Assertions.assertThatIllegalStateException;36import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;37import static org.assertj.core.api.Assertions.assertThatCode;38import static org.assertj.core.api.Assertions.assertThatNoException;39import static org.assertj.core.api.Assertions.assertThatExceptionOfType;40import static org.assertj.core.api.Assertions.assertThatNullPointerException;41import static org.assertj.core.api.Assertions.assertThatIllegalStateException;42import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;43import static org.assertj.core.api.Assertions.assertThatCode;44import static org.assertj.core.api.Assertions.assertThatNoException;45import static org.assertj.core.api.Assertions.assertThatExceptionOfType;46import static org.assertj.core.api.Assertions.assertThatNullPointerException;47import static org.assertj.core.api.Assertions.assertThatIllegalStateException;48import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;49import static
assertThatReflectiveOperationException
Using AI Code Generation
1package org.example;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.assertThatExceptionOfType;4import static org.assertj.core.api.Assertions.catchThrowable;5import java.io.IOException;6import java.util.ArrayList;7import java.util.List;8import org.junit.Test;9public class AppTest {10 public void testException() {11 Throwable thrown = catchThrowable(() -> {12 throw new IOException("boom!");13 });14 assertThat(thrown).isInstanceOf(IOException.class).hasMessageContaining("boom");15 }16 public void testException2() {17 List<Integer> list = new ArrayList<>();18 list.add(1);19 list.add(2);20 list.add(3);21 assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(() -> {22 list.get(5);23 }).withMessageContaining("Index: 5, Size: 3");24 }25 public void testException3() {26 List<Integer> list = new ArrayList<>();27 list.add(1);28 list.add(2);29 list.add(3);30 assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(() -> {31 list.get(5);32 }).withMessageContaining("Index: 5, Size: 3").withMessageContaining("Index: 5, Size: 3");33 }34 public void testException4() {35 List<Integer> list = new ArrayList<>();36 list.add(1);37 list.add(2);38 list.add(3);39 assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(() -> {40 list.get(5);41 }).withMessageContaining("Index: 5, Size: 3").withMessageContaining("Index: 5, Size: 3").withMessageContaining("Index: 5, Size: 3");42 }43 public void testException5() {44 List<Integer> list = new ArrayList<>();45 list.add(1);46 list.add(2);47 list.add(3);48 assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(() -> {49 list.get(5);50 }).withMessageContaining("Index: 5, Size: 3").withMessageContaining("Index: 5, Size: 3").withMessageContaining("Index: 5, Size: 3").withMessageContaining("Index: 5, Size: 3");51 }
assertThatReflectiveOperationException
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.assertj.core.api.reflect.FieldSupport;3import org.assertj.core.api.reflect.FieldSupport.ComparisonStrategy;4import org.assertj.core.api.reflect.FieldSupport.FieldComparisonStrategy;5import org.assertj.core.api.reflect.ReflectionException;6import org.assertj.core.util.diff.Delta;7import org.junit.jupiter.api.Test;8class TestClass {9 public void test() {10 Assertions.assertThatReflectiveOperationException(new Exception("test")).hasMessage("test");11 }12}13import org.assertj.core.api.Assertions;14import org.assertj.core.api.reflect.FieldSupport;15import org.assertj.core.api.reflect.FieldSupport.ComparisonStrategy;16import org.assertj.core.api.reflect.FieldSupport.FieldComparisonStrategy;17import org.assertj.core.api.reflect.ReflectionException;18import org.assertj.core.util.diff.Delta;19import org.junit.jupiter.api.Test;20class TestClass {21 public void test() {22 Assertions.assertThatReflectiveOperationException(new Exception("test")).hasMessage("test1");23 }24}25import org.assertj.core.api.Assertions;26import org.assertj.core.api.reflect.FieldSupport;27import org.assertj.core.api.reflect.FieldSupport.ComparisonStrategy;28import org.assertj.core.api.reflect.FieldSupport.FieldComparisonStrategy;29import org.assertj.core.api.reflect.ReflectionException;30import org.assertj.core.util.diff.Delta;31import org.junit.jupiter.api.Test;32class TestClass {33 public void test() {34 Assertions.assertThatReflectiveOperationException(new Exception("test")).hasMessage("test");35 }36}37import org.assertj.core.api.Assertions;38import org.assertj.core.api.reflect.FieldSupport;39import
assertThatReflectiveOperationException
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.junit.Assert;3import org.junit.Test;4import java.io.File;5import java.io.FileInputStream;6import java.io.FileNotFoundException;7import java.io.IOException;8import java.io.InputStream;9import java.util.NoSuchElementException;10public class AssertJTest{11 public void assertThatReflectiveOperationExceptionTest() {12 Assertions.assertThatExceptionOfType(NoSuchElementException.class).isThrownBy(() -> {13 throw new NoSuchElementException();14 });15 }16}17 at org.assertj.core.api.ThrowableAssert.catchThrowable(ThrowableAssert.java:59)18 at org.assertj.core.api.AssertionsForClassTypes.catchThrowable(AssertionsForClassTypes.java:739)19 at org.assertj.core.api.AssertionsForClassTypes.assertThatExceptionOfType(AssertionsForClassTypes.java:686)20 at AssertJTest.assertThatReflectiveOperationExceptionTest(AssertJTest.java:15)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$2.evaluate(ParentRunner.java:268)37 at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
assertThatReflectiveOperationException
Using AI Code Generation
1package org.myorg;2import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;3import static org.assertj.core.api.Assertions.assertThatExceptionOfType;4public class AssertjTest {5 public static void main(String[] args) {6 assertThatReflectiveOperationException().isThrownBy(() -> {7 throw new Exception("boom!");8 }).withMessage("boom!");9 }10}11 at org.junit.Assert.assertEquals(Assert.java:115)12 at org.junit.Assert.assertEquals(Assert.java:144)13 at org.assertj.core.api.ThrowableAssert.hasMessage(ThrowableAssert.java:138)14 at org.assertj.core.api.ThrowableAssert.hasMessage(ThrowableAssert.java:27)15 at org.assertj.core.api.Assertions$AssertThatThrowable.hasMessage(Assertions.java:630)16 at org.assertj.core.api.Assertions$AssertThatThrowable.hasMessage(Assertions.java:619)17 at org.myorg.AssertjTest.lambda$main$0(AssertjTest.java:11)18 at org.assertj.core.api.ThrowableAssert.isThrownBy(ThrowableAssert.java:98)19 at org.assertj.core.api.ThrowableAssert.isThrownBy(ThrowableAssert.java:27)20 at org.myorg.AssertjTest.main(AssertjTest.java:10)21package org.myorg;22import static org.assertj.core.api.Assertions.assertThatExceptionOfType;23public class AssertjTest {24 public static void main(String[] args) {25 assertThatExceptionOfType(Exception.class).isThrownBy(() -> {26 throw new Exception("boom!");27 }).withMessage("boom!");28 }29}30 at org.assertj.core.api.Assertions.assertThatThrownBy(Assertions.java:1117)31 at org.myorg.AssertjTest.lambda$main$0(AssertjTest.java:8)32 at org.assertj.core.api.ThrowableAssert.isThrownBy(ThrowableAssert.java:98)33 at org.assertj.core.api.ThrowableAssert.isThrownBy(ThrowableAssert.java:27)
assertThatReflectiveOperationException
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import java.io.File;3import java.io.IOException;4import java.util.logging.Level;5import java.util.logging.Logger;6public class AssertJAssertions {7 public static void main(String[] args) {8 try {9 File file = new File("C:\\Users\\user\\Desktop\\file.txt");10 file.createNewFile();11 } catch (IOException ex) {12 Logger.getLogger(AssertJAssertions.class.getName()).log(Level.SEVERE, null, ex);13 }14 }15}16 at org.assertj.core.api.Assertions.assertThatCode(Assertions.java:1489)17 at org.assertj.core.api.Assertions.assertThatThrownBy(Assertions.java:1467)18 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1453)19 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1448)20 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1443)21 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1438)22 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1433)23 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1428)24 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1423)25 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1418)26 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1413)27 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1408)28 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1403)29 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1398)30 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1393)31 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1388)32 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1383)33 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1378)34 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1373)35 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1368)36 at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions
assertThatReflectiveOperationException
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class AssertJTest {4 public void testAssertJ() {5 Assertions.assertThatReflectiveOperationException().isThrownBy(() -> {6 Class.forName("java.lang.String").getDeclaredConstructor().newInstance();7 });8 }9}
assertThatReflectiveOperationException
Using AI Code Generation
1import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;2import org.junit.Test;3public class AssertJAssertThatReflectiveOperationException {4 public void test() {5 assertThatReflectiveOperationException().isThrownBy(() -> {6 throw new Exception("boom!");7 }).withMessage("boom!");8 }9}10import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;11import org.junit.Test;12public class AssertJAssertThatReflectiveOperationException {13 public void test() {14 assertThatReflectiveOperationException().isThrownBy(() -> {15 throw new Exception("boom!");16 }).withMessage("boom!");17 }18}19import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;20import org.junit.Test;21public class AssertJAssertThatReflectiveOperationException {22 public void test() {23 assertThatReflectiveOperationException().isThrownBy(() -> {24 throw new Exception("boom!");25 }).withMessage("boom!");26 }27}28import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;29import org.junit.Test;30public class AssertJAssertThatReflectiveOperationException {31 public void test() {32 assertThatReflectiveOperationException().isThrownBy(() -> {33 throw new Exception("boom!");34 }).withMessage("boom!");35 }36}37import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;38import org.junit.Test;39public class AssertJAssertThatReflectiveOperationException {40 public void test() {41 assertThatReflectiveOperationException().isThrownBy(() -> {42 throw new Exception("boom!");43 }).withMessage("boom!");44 }45}46import static org.assertj.core.api.Assertions.assertThatReflectiveOperationException;47import
assertThatReflectiveOperationException
Using AI Code Generation
1import org.assertj.core.api.Assertions;2import java.io.IOException;3import java.io.FileNotFoundException;4import java.io.FileInputStream;5class AssertionsClass_AssertThatReflectiveOperationException {6 public static void main(String[] args) {7 try {8 FileInputStream file = new FileInputStream("file.txt");9 } catch (FileNotFoundException e) {10 Assertions.assertThatReflectiveOperationException(e).isInstanceOf(FileNotFoundException.class);11 }12 try {13 FileInputStream file = new FileInputStream("file.txt");14 } catch (IOException e) {15 Assertions.assertThatReflectiveOperationException(e).isInstanceOf(IOException.class);16 }17 }18}19import org.assertj.core.api.Assertions;20import java.io.IOException;21import java.io.FileNotFoundException;22import java.io.FileInputStream;23class AssertionsClass_AssertThatReflectiveOperationException {24 public static void main(String[] args) {25 try {26 FileInputStream file = new FileInputStream("file.txt");27 } catch (FileNotFoundException e) {28 Assertions.assertThatReflectiveOperationException(e).isInstanceOf(IOException.class);29 }30 try {31 FileInputStream file = new FileInputStream("file.txt");32 } catch (IOException e) {33 Assertions.assertThatReflectiveOperationException(e).isInstanceOf(FileNotFoundException.class);34 }35 }36}37import org.assertj.core.api.Assertions;38import java.io.IOException;39import java.io.FileNotFoundException;40import java.io.FileInputStream;41class AssertionsClass_AssertThatReflectiveOperationException {42 public static void main(String[] args) {43 try {44 FileInputStream file = new FileInputStream("file.txt");45 }
Automation Testing Tutorials
Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.
LambdaTest Learning Hubs:
- JUnit Tutorial
- TestNG Tutorial
- Webdriver Tutorial
- WebDriverIO Tutorial
- Protractor Tutorial
- Selenium 4 Tutorial
- Jenkins Tutorial
- NUnit Tutorial
- Jest Tutorial
- Playwright Tutorial
- Cypress Tutorial
- PyTest Tutorial
YouTube
You could also refer to video tutorials over LambdaTest YouTube channel to get step by step demonstration from industry experts.
Run Assertj automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Most used method in Assertions
- Assertions
- assertThat
- assertThatPredicate
- createAssert
- testException
- assertThatThrownBy
- assertThatCode
- assertThatObject
- assertWith
- catchThrowable
- TextException
- catchThrowableOfType
- catchException
- catchRuntimeException
- catchNullPointerException
- catchIllegalArgumentException
- catchIOException
- catchReflectiveOperationException
- catchIllegalStateException
- catchIndexOutOfBoundsException
- assertThatExceptionOfType
- assertThatNoException
- assertThatNullPointerException
- assertThatIllegalArgumentException
- assertThatIOException
- assertThatIllegalStateException
- assertThatException
- assertThatRuntimeException
- assertThatReflectiveOperationException
- assertThatIndexOutOfBoundsException
- setRemoveAssertJRelatedElementsFromStackTrace
- fail
- failBecauseExceptionWasNotThrown
- shouldHaveThrown
- setMaxLengthForSingleLineDescription
- setMaxElementsForPrinting
- setPrintAssertionsDescription
- setDescriptionConsumer
- setMaxStackTraceElementsDisplayed
- extractProperty
- tuple
- setAllowExtractingPrivateFields
- setAllowComparingPrivateFields
- setExtractBareNamePropertyMethods
- entry
- atIndex
- offset
- within
- withPrecision
- withMarginOf
- withinPercentage
- byLessThan
- from
- allOf
- anyOf
- doesNotHave
- filter
- notIn
- contentOf
- linesOf
- setLenientDateParsing
- registerCustomDateFormat
- useDefaultDateFormatsOnly
- assertThatIterable
- assertThatIterator
- assertThatCollection
- assertThatList
- assertThatStream
- assertThatPath
- assertThatComparable
- isBlinking
- setBlinking
- AssertDelegateTarget_example
- toStringOf
- useRepresentation
- registerFormatterForType
- useDefaultRepresentation
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
