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How to use getAssertion method of org.assertj.core.api.throwable.ThrowableAssert_rootCause_Test class

Best Assertj code snippet using org.assertj.core.api.throwable.ThrowableAssert_rootCause_Test.getAssertion

Source:ThrowableAssert_rootCause_Test.java

...49    // THEN50    assertThat(error).hasMessage(actualIsNull());51  }52  @Override53  public ThrowableAssert<Throwable> getAssertion() {54    return new ThrowableAssert<>(new Throwable(cause));55  }56  @Override57  public AbstractAssert<?, ?> invoke_navigation_method(ThrowableAssert<Throwable> assertion) {58    return assertion.rootCause();59  }60}...

getAssertion

Using AI Code Generation

1    public void should_pass_if_root_cause_is_instance_of_expected_type() {2      Throwable throwable = new Throwable(new Exception());3      assertThat(throwable).rootCause().isInstanceOf(Exception.class);4    }5    public void should_fail_if_root_cause_is_not_instance_of_expected_type() {6      Throwable throwable = new Throwable(new Exception());7      try {8        assertThat(throwable).rootCause().isInstanceOf(RuntimeException.class);9      } catch (AssertionError e) {10        assertThat(e).hasMessage(11            String.format("%nExpecting actual:%n  <java.lang.Exception>%nto be an instance of:%n  <java.lang.RuntimeException>%nbut was not."));12        return;13      }14      fail("AssertionError expected");15    }16>  org.assertj.core.api.throwable.ThrowableAssert_rootCause_Test.should_fail_if_root_cause_is_not_instance_of_expected_type(ThrowableAssert_rootCause_Test.java:31)17> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)18>  sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)19>  sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)20> at java.lang.reflect.Method.invoke(Method.java:497)21>  org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)

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