test_program.py 文件源码

def testCatchBreakInstallsHandler(self):
        module = sys.modules['unittest.main']
        original = module.installHandler
        def restore():
            module.installHandler = original
        self.addCleanup(restore)

        self.installed = False
        def fakeInstallHandler():
            self.installed = True
        module.installHandler = fakeInstallHandler

        program = self.program
        program.catchbreak = True

        program.testRunner = FakeRunner

        program.runTests()
        self.assertTrue(self.installed)