在JUnit
4中，可以使用ExpectedException规则轻松完成此操作。
这是来自javadocs的示例：
// These tests all pass.public static class HasExpectedException { @Rule public ExpectedException thrown = ExpectedException.none(); @Test public void throwsNothing() { // no exception expected, none thrown: passes. } @Test public void throwsNullPointerException() { thrown.expect(NullPointerException.class); throw new NullPointerException(); } @Test public void throwsNullPointerExceptionWithMessage() { thrown.expect(NullPointerException.class); thrown.expectMessage("happened?"); thrown.expectMessage(startsWith("What")); throw new NullPointerException("What happened?"); }}
