如何在Pysys的基类中添加标准验证

Question

I have a number of unit tests that extends a base class.

I want to add a validate condition to all testcases. I know I can do in each test

def validate(self):
    # The base validation 
    BaseTest.validate(self)

    # This test validation 
    self.assertGrep(file='correlator.log', exprList='TEST PASSED')

Is there a way I can do this only by modifying the base class and without having to modify all testcases?

Or is it something that needs to be done in a Runner extension?

Answer 1

TemplateMethod pattern to the rescue:

class BaseTest(unitest.Testcase):
    def validate(self):
       do_the_common_validation()
       self.validate_more()

    def validate_more(self):
        pass

Then in your subclasses you just have to override validate_more() .

Answer 2

In terms of the pysys test framework which this question is based on, there is no specific support within the framework for what you want to achieve. The answer to this previous question (stackoverflow.com/questions/8618157/…) using metaclasses may allow you to do what you want without having to update each and every one of your tests