如何指定使用Boost.Test应该会有异常？ [英] How do you specify that an exception should be expected using Boost.Test?

问题描述

我有一个Boost单元测试用例，导致被测对象抛出异常（这是测试引起异常）。如何在测试中指定要预期的特定异常。

我可以通过使用BOOST_AUTO_TEST_CASE_EXPECTED_FAILURES指定测试应该有一定数量的故障，但是这似乎是非特定的。我想能够在测试中的一个特定点说出应该抛出一个异常，并且不应该被视为失败。

解决方案

这不行吗？

  BOOST_CHECK_THROW（expression，an_exception_type）; 
  

如果表达式抛出给定的异常类型或失败，则应该导致测试通过。如果您需要与CHECK不同的严重性，您还可以使用 BOOST_WARN_THROW（）或 BOOST_REQUIRE_THROW（）。请参见文档

I have a Boost unit test case which causes the object under test to throw an exception (that's the test, to cause an exception). How do I specify in the test to expect that particular exception.

I can specify that the test should have a certain number of failures by using BOOST_AUTO_TEST_CASE_EXPECTED_FAILURES but that seems rather unspecific. I want to be able to say at a specific point in the test that an exception should be thrown and that it should not be counted as a failure.

解决方案

Doesn't this work?

BOOST_CHECK_THROW (expression, an_exception_type);

That should cause the test to pass if the expression throws the given exception type or fail otherwise. If you need a different severity than 'CHECK', you could also use BOOST_WARN_THROW() or BOOST_REQUIRE_THROW() instead. See the documentation

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