How to use Assertions_assertThat_with_Throwable_Test class of org.assertj.core.api package

Best Assertj code snippet using org.assertj.core.api.Assertions_assertThat_with_Throwable_Test

Source:Assertions_assertThat_with_Throwable_Test.java

...15import org.assertj.core.api.ThrowableAssert.ThrowingCallable;16import org.assertj.core.util.AssertionsUtil;17import org.assertj.core.util.Throwables;18import org.junit.jupiter.api.Test;19public class Assertions_assertThat_with_Throwable_Test {20    @Test21    public void should_build_ThrowableAssert_with_runtime_exception_thrown() {22        Assertions.assertThatThrownBy(Assertions_assertThat_with_Throwable_Test.codeThrowing(new IllegalArgumentException("boom"))).isInstanceOf(IllegalArgumentException.class).hasMessage("boom");23    }24    @Test25    public void should_build_ThrowableAssert_with_throwable_thrown() {26        Assertions.assertThatThrownBy(Assertions_assertThat_with_Throwable_Test.codeThrowing(new Throwable("boom"))).isInstanceOf(Throwable.class).hasMessage("boom");27    }28    @Test29    public void should_be_able_to_pass_a_description_to_assertThatThrownBy() {30        Throwable assertionError = Assertions.catchThrowable(() -> {31            // make assertThatThrownBy fail to verify the description afterwards32            assertThatThrownBy(raisingException("boom"), "Test %s", "code").hasMessage("bam");33        });34        Assertions.assertThat(assertionError).isInstanceOf(AssertionError.class).hasMessageContaining("[Test code]");35    }36    @Test37    public void should_fail_if_no_throwable_was_thrown() {38        Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThatThrownBy(() -> {39        }).hasMessage("boom ?")).withMessage(String.format("%nExpecting code to raise a throwable."));40    }41    @Test42    public void can_capture_exception_and_then_assert_following_AAA_or_BDD_style() {43        // when44        Exception exception = new Exception("boom!!");45        Throwable boom = Assertions.catchThrowable(Assertions_assertThat_with_Throwable_Test.codeThrowing(exception));46        // then47        Assertions.assertThat(boom).isSameAs(exception);48    }49    @Test50    public void catchThrowable_returns_null_when_no_exception_thrown() {51        // when52        Throwable boom = Assertions.catchThrowable(() -> {53        });54        // then55        Assertions.assertThat(boom).isNull();56    }57    @Test58    public void catchThrowableOfType_should_fail_with_a_message_containing_the_original_stack_trace_when_the_wrong_Throwable_type_was_thrown() {59        // GIVEN60        final Exception exception = new Exception("boom!!");61        ThrowingCallable codeThrowingException = Assertions_assertThat_with_Throwable_Test.codeThrowing(exception);62        // WHEN63        AssertionError assertionError = AssertionsUtil.expectAssertionError(() -> catchThrowableOfType(codeThrowingException, .class));64        // THEN65        Assertions.assertThat(assertionError).hasMessageContaining(IOException.class.getName()).hasMessageContaining(Exception.class.getName()).hasMessageContaining(Throwables.getStackTrace(exception));66    }67    @Test68    public void catchThrowableOfType_should_succeed_and_return_actual_instance_with_correct_class() {69        // GIVEN70        final Exception expected = new RuntimeException("boom!!");71        // WHEN72        Exception exception = Assertions.catchThrowableOfType(Assertions_assertThat_with_Throwable_Test.codeThrowing(expected), Exception.class);73        // THEN74        Assertions.assertThat(exception).isSameAs(expected);75    }76    @Test77    public void catchThrowableOfType_should_succeed_and_return_null_if_no_exception_thrown() {78        IOException actual = Assertions.catchThrowableOfType(() -> {79        }, IOException.class);80        Assertions.assertThat(actual).isNull();81    }82    @Test83    public void should_fail_with_good_message_when_assertion_is_failing() {84        Assertions.assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThatThrownBy(raisingException("boom")).hasMessage("bam")).withMessageContaining("Expecting message:").withMessageContaining("<\"bam\">").withMessageContaining("but was:").withMessageContaining("<\"boom\">");85    }86}...

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