[英]How to verify that static method throws an exception using AssertJ?
When I try to test this method 当我尝试测试此方法时
static void validatePostcode(final String postcode, final String addressLine)
{
if(! hasValidPostcode(postcode, addressLine)) {
throw new InvalidFieldException("Postcode is null or empty ");
}
}
using the following test 使用以下测试
@Test
public void testThrowsAnException()
{
assertThatThrownBy(validatePostcode("", "")).isInstanceOf(InvalidFieldException.class);
}
I get this error message in IntelliJ 我在IntelliJ中收到此错误消息
assertThatThrownBy (org.assertj.core.api.ThrowableAssert.ThrowingCallable) in Assertions cannot be applied to (void) 断言中的assertThatThrownBy(org.assertj.core.api.ThrowableAssert.ThrowingCallable)不能应用于(void)
Same thing with assertThatExceptionOfType
. 与assertThatExceptionOfType
相同。
Is it possible to test that static method actually throws an unchecked exception using AssertJ? 是否有可能使用AssertJ测试静态方法实际上抛出未经检查的异常? What should I change in my test? 我的考试应该改变什么?
As the compilation error demonstrates, that method expects a throwing callable. 正如编译错误所表明的那样,该方法期望抛出throwable。
@Test
public void testThrowsAnException()
{
assertThatThrownBy(() -> validatePostcode("", "")).isInstanceOf(InvalidFieldException.class);
}
change to this way. 改为这种方式。 you need to pass lambda to test with assertj 您需要通过lambda来使用assertj进行测试
assertThatThrownBy(()->validatePostcode("","")).isInstanceOf(InvalidFieldException.class);
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