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

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

Source:PriceFeedIT.java

1package integration;2import static org.assertj.core.api.Assertions.assertThat;3import static org.assertj.core.api.Assertions.assertThatException;4import java.io.IOException;5import java.io.InputStream;6import java.math.BigDecimal;7import java.nio.charset.StandardCharsets;8import java.util.List;9import org.apache.commons.io.IOUtils;10import org.junit.jupiter.api.BeforeAll;11import org.junit.jupiter.api.Test;12import com.fasterxml.jackson.core.type.TypeReference;13import com.fasterxml.jackson.databind.ObjectMapper;14import lombok.Data;15import pl.sii.price.adapters.api.PriceFeedResponse;16import pl.sii.price.adapters.messagebroker.converter.ConversionException;17import pl.sii.price.config.MarketPriceHandlerExerciseConfig;18import pl.sii.price.domain.entity.PriceFeedNotExists;19public class PriceFeedIT {20    private static MarketPriceHandlerExerciseConfig marketPriceHandlerExercise;21    22    private static ObjectMapper objectMapper;23    24    @BeforeAll25    public static void init() {26        marketPriceHandlerExercise = new MarketPriceHandlerExerciseConfig();        27        objectMapper = new ObjectMapper();28    }29    30    @Test31    void sendPriceFeedCorrectly() throws IOException {32        // given       33        String message = readFile("test-data.csv");34        List<ExpectedResult> expectedResults = objectMapper.readValue(35                readFile("expected-result.json"),36                new TypeReference<List<ExpectedResult>>(){});37        38        // when39        marketPriceHandlerExercise.getPriceFeedReceiver().onMessage(message);40        41        // then42        expectedResults.stream().forEach(this::checkExpectedResult);43    }44    45    @Test46    void sendWrongPriceFeed() throws IOException {47        // given       48        String message = "wrong data";49        50        // then51        assertThatException()52            .isThrownBy(() -> {53                // when54                marketPriceHandlerExercise.getPriceFeedReceiver().onMessage(message);55            })56            .isExactlyInstanceOf(ConversionException.class)57            .withMessage(String.format("Can't convert: %s into PriceFeed", message));58    }59    60    @Test61    void getWrongPriceFeed() throws IOException {62        // given       63        String instrumentName = "wrong data";64        65        // then66        assertThatException()            67            .isThrownBy(() -> {68                // when69                marketPriceHandlerExercise.getPriceFeedEndpoint().getTheLatestPriceFeed(instrumentName);70            })71            .isExactlyInstanceOf(PriceFeedNotExists.class)72            .withMessage(String.format("Can't find price feed for instrumentName: %s", instrumentName));73    }74    75    private void checkExpectedResult(ExpectedResult expectedResult) {76        PriceFeedResponse expectedResponse = PriceFeedResponse.builder()77                .buyPrice(expectedResult.getBuyPrice())78                .sellPrice(expectedResult.getSellPrice())79                .build();80        assertThat(marketPriceHandlerExercise.getPriceFeedEndpoint()...

Source:Assertions_assertThatException_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.assertThatException;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_assertThatException_Test {22  @Test23  void should_pass_when_throw_Exception() {24    assertThatException().isThrownBy(codeThrowing(new Exception()));25  }26  @Test27  void should_pass_when_throw_Exception_Subclass() {28    assertThatException().isThrownBy(codeThrowing(new RuntimeException()));29  }30  @Test31  void should_fail_when_throw_wrong_type() {32    // GIVEN33    ThrowingCallable throwingCallable = () -> assertThatException().isThrownBy(codeThrowing(new Error()));34    // WHEN35    AssertionError assertionError = expectAssertionError(throwingCallable);36    // THEN37    then(assertionError).hasMessageContainingAll(Error.class.getName(), Exception.class.getName());38  }39  @Test40  void should_fail_when_no_exception_thrown() {41    // GIVEN42    ThrowingCallable throwingCallable = () -> assertThatException().isThrownBy(() -> {});43    // WHEN44    AssertionError assertionError = expectAssertionError(throwingCallable);45    // THEN46    then(assertionError).hasMessage(format("%nExpecting code to raise a throwable."));47  }48}

assertThatException

Using AI Code Generation

1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThatExceptionOfType;3public class Test1 {4    public void test1() {5        assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> {6            throw new NullPointerException("NPE");7        }).withMessage("NPE");8    }9}10  assertThatCode(...).doesNotThrowAnyException()11  assertThatCode(...).doesNotThrowAnyException()12  assertThatCode(...).doesNotThrowAnyException()13  assertThatCode(...).doesNotThrowAnyException()14  assertThatCode(...).doesNotThrowAnyException()

assertThatException

Using AI Code Generation

1import org.junit.Test;2import static org.assertj.core.api.Assertions.*;3public class AssertJExceptionTest {4    public void testException() {5        assertThatExceptionOfType(IllegalArgumentException.class)6                .isThrownBy(() -> {7                    throw new IllegalArgumentException("Illegal argument");8                })9                .withMessage("Illegal argument")10                .withMessageContaining("argument")11                .withNoCause();12    }13}14	at org.junit.Assert.assertEquals(Assert.java:115)15	at org.junit.Assert.assertEquals(Assert.java:144)16	at org.assertj.core.api.ThrowableAssert.hasMessage(ThrowableAssert.java:86)17	at org.assertj.core.api.ThrowableAssert.hasMessage(ThrowableAssert.java:65)18	at AssertJExceptionTest.testException(AssertJExceptionTest.java:16)19Related Posts: JUnit 5 assertThrows() method20JUnit 5 assertTimeout() method21JUnit 5 assertTimeoutPreemptively() method22JUnit 5 assertDoesNotThrow() method23JUnit 5 assertAll() method24JUnit 5 assertArrayEquals() method25JUnit 5 assertLinesMatch() method26JUnit 5 assertIterableEquals() method27JUnit 5 assertTimeoutPreemptively() method28JUnit 5 assertTimeout() method29JUnit 5 assertThrows() method30JUnit 5 assertDoesNotThrow() method31JUnit 5 assertArrayEquals() method32JUnit 5 assertIterableEquals() method33JUnit 5 assertLinesMatch() method34JUnit 5 assertThrows() method35JUnit 5 assertDoesNotThrow() method36JUnit 5 assertTimeoutPreemptively() method37JUnit 5 assertTimeout() method38JUnit 5 assertArrayEquals() method39JUnit 5 assertLinesMatch() method40JUnit 5 assertIterableEquals() method41JUnit 5 assertThrows() method42JUnit 5 assertDoesNotThrow() method43JUnit 5 assertTimeoutPreemptively() method44JUnit 5 assertTimeout() method45JUnit 5 assertArrayEquals() method46JUnit 5 assertIterableEquals() method47JUnit 5 assertLinesMatch() method48JUnit 5 assertThrows() method49JUnit 5 assertDoesNotThrow() method50JUnit 5 assertTimeoutPreemptively() method51JUnit 5 assertTimeout() method52JUnit 5 assertArrayEquals() method

assertThatException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.jupiter.api.Test;3public class AppTest {4    public void testAssertThatException() {5        Assertions.assertThatExceptionOfType(NullPointerException.class)6                .isThrownBy(() -> {7                    throw new NullPointerException();8                });9    }10}11import org.assertj.core.api.Assertions;12import org.junit.jupiter.api.Test;13public class AppTest {14    public void testAssertThatException() {15        Assertions.assertThatExceptionOfType(NullPointerException.class)16                .isThrownBy(() -> {17                    throw new IndexOutOfBoundsException();18                });19    }20}21import org.assertj.core.api.Assertions;22import org.junit.jupiter.api.Test;23public class AppTest {24    public void testAssertThatException() {25        Assertions.assertThatExceptionOfType(NullPointerException.class)26                .isThrownBy(() -> {27                    throw new NullPointerException();28                }).withMessage("hello");29    }30}31import org.assertj.core.api.Assertions;32import org.junit.jupiter.api.Test;33public class AppTest {34    public void testAssertThatException() {35        Assertions.assertThatExceptionOfType(NullPointerException.class)36                .isThrownBy(() -> {37                    throw new NullPointerException();38                }).withMessage("hello");39    }40}

assertThatException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Test1 {4    public void test() {5        Assertions.assertThatExceptionOfType(NullPointerException.class).isThrownBy(() -> {6            throw new NullPointerException("test");7        }).withMessage("test");8    }9}

assertThatException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class TestClass {4    @Test(expected = ArithmeticException.class)5    public void test1() {6        int i = 1 / 0;7    }8    public void test2() {9        Assertions.assertThatExceptionOfType(ArithmeticException.class).isThrownBy(() -> {10            int i = 1 / 0;11        });12    }13}14    at org.junit.Assert.assertEquals(Assert.java:115)15    at org.junit.Assert.assertEquals(Assert.java:144)16    at TestClass.test2(TestClass.java:13)17import org.assertj.core.api.Assertions;18import org.junit.Test;19public class TestClass {20    public void test1() {21        Assertions.assertThatExceptionOfType(ArithmeticException.class).isThrownBy(() -> {22            int i = 1 / 0;23        }).withMessage("/ by zero");24    }25}26    at org.junit.Assert.assertEquals(Assert.java:115)27    at org.junit.Assert.assertEquals(Assert.java:144)28    at TestClass.test1(TestClass

assertThatException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2public class App {3    public static void main(String[] args) {4        Assertions.assertThatException(() -> { throw new RuntimeException("boom!"); })5                  .isInstanceOf(RuntimeException.class)6                  .hasMessage("boom!");7    }8}9	at org.assertj.core.api.Assertions.assertThatException(Assertions.java:1369)10	at App.main(1.java:5)

assertThatException

Using AI Code Generation

1import org.junit.Test;2import static org.assertj.core.api.Assertions.assertThatException;3public class AppTest {4    public void testAssertThatException() {5        assertThatException(() -> {6            throw new Exception("exception");7        }).isInstanceOf(Exception.class).hasMessage("exception");8    }9}10	at org.junit.Assert.assertEquals(Assert.java:115)11	at org.junit.Assert.assertEquals(Assert.java:144)12	at org.assertj.core.api.ThrowableAssert.hasMessage(ThrowableAssert.java:99)13	at AppTest.lambda$testAssertThatException$0(AppTest.java:13)14	at org.assertj.core.api.ThrowableAssert.catchThrowable(ThrowableAssert.java:57)15	at org.assertj.core.api.Assertions.assertThatException(Assertions.java:1252)16	at AppTest.testAssertThatException(AppTest.java:11)17import org.junit.jupiter.api.Test;18import static org.junit.jupiter.api.Assertions.assertThrows;19public class AppTest {20    public void testAssertThrows() {21        Exception exception = assertThrows(Exception.class, () -> {22            throw new Exception("exception");23        });24        assertEquals("exception", exception.getMessage());25    }26}27	at org.junit.Assert.assertEquals(Assert.java:115)28	at org.junit.Assert.assertEquals(Assert.java:144)29	at AppTest.testAssertThrows(AppTest.java:14)30import org.junit.Test;31import static org.assertj.core.api.Assertions.assertThatExceptionOfType;32public class AppTest {33    public void testAssertThatExceptionOfType() {34        assertThatExceptionOfType(Exception.class).isThrownBy(() -> {35            throw new Exception("exception");36        }).withMessage("exception");37    }38}

assertThatException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.junit.Test;3public class Test1 {4public void test1() {5Assertions.assertThatExceptionOfType(NullPointerException.class)6.isThrownBy(() -> {7throw new NullPointerException();8});9}10}11import org.assertj.core.api.Assertions;12import org.junit.Test;13public class Test1 {14public void test1() {15Assertions.assertThatExceptionOfType(NullPointerException.class)16.isThrownBy(() -> {17throw new NullPointerException();18})19.withMessage("null");20}21}22import org.assertj.core.api.Assertions;23import org.junit.Test;24public class Test1 {25public void test1() {26Assertions.assertThatExceptionOfType(NullPointerException.class)27.isThrownBy(() -> {28throw new NullPointerException();29})30.withMessage("null")31.withNoCause();32}33}34import org.assertj.core.api.Assertions;35import org.junit.Test;

assertThatException

Using AI Code Generation

1import org.assertj.core.api.Assertions;2import org.assertj.core.api.ThrowableAssert.ThrowingCallable;3import java.util.Arrays;4import java.util.List;5public class 1 {6public static void main(String[] args) {7List<String> list = Arrays.asList("a", "b", "c");8ThrowingCallable callable = () -> list.get(3);9Assertions.assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(callable);10}11}12	at org.junit.Assert.assertEquals(Assert.java:115)13	at org.junit.Assert.assertEquals(Assert.java:144)14	at org.assertj.core.api.ThrowableAssert.isThrownBy(ThrowableAssert.java:89)15	at org.assertj.core.api.Assertions.assertThatExceptionOfType(Assertions.java:1973)16	at 1.main(1.java:14)17Example 2: Using assertThatExceptionOfType() method18import org.assertj.core.api.Assertions;19import org.assertj.core.api.ThrowableAssert.ThrowingCallable;20import java.util.Arrays;21import java.util.List;22public class 2 {23public static void main(String[] args) {24List<String> list = Arrays.asList("a", "b", "c");25ThrowingCallable callable = () -> list.get(3);26Assertions.assertThatExceptionOfType(IndexOutOfBoundsException.class).isThrownBy(callable);27}28}29	at org.junit.Assert.assertEquals(Assert.java:115)30	at org.junit.Assert.assertEquals(Assert.java:144)31	at org.assertj.core.api.ThrowableAssert.isThrownBy(ThrowableAssert.java:89)

assertThatException

Using AI Code Generation

1package learning.assertj;2import static org.assertj.core.api.Assertions.assertThatException;3import org.junit.Test;4public class AssertJTest {5    public void testAssertJ() {6        assertThatException().isThrownBy(() -> { throw new Exception("Exception"); })7            .withMessage("Exception")8            .withMessageContaining("Excep")9            .withMessageStartingWith("Excep")10            .withMessageEndingWith("tion")11            .withCauseInstanceOf(Exception.class)12            .withNoCause();13    }14}

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.