Python单元测试:使用Nose重试失败吗?

问题描述

我有一个随机失败的测试，我想让它重试几次，然后再发送错误消息.

I have a test which randomly fails and I want to let it retry a number of times before sending an error message.

我正在将Python与Nose配合使用.

I'm using python with Nose.

我写了以下内容，但不幸的是，即使使用try/except处理，当第一次尝试失败时，Nose也会返回错误.

I wrote the following, but unfortunately, even with the try/except handling, Nose returns an error when the test fails on the first try.

def test_something(self):
    maxAttempts = 3
    func = self.run_something

    attempt = 1
    while True:
        if attempt == maxAttempts:
            yield func
            break

        else:
            try:
                yield func
                break
            except:
                attempt += 1

def run_something(self):
    #Do stuff

谢谢

推荐答案

使用生成器，您可以运行鼻子maxAttempts测试.如果其中的任何失败，则套件失败. try/catch并不特别适用于您的收益率测试，因为它的鼻子在运行它们.像这样重写测试:

By using a generator, you're giving nose maxAttempts tests to run. if any of them fail, the suite fails. The try/catch doesn't particularly apply to the tests your yielding, since its nose that runs them. Rewrite your test like so:

def test_something(self):
    maxAttempts = 3
    func = self.run_something

    attempt = 1
    while True:
        if attempt == maxAttempts:
            func() # <<<--------
            break

        else:
            try:
                func() # <<<--------
                break
            except:
                attempt += 1

def run_something(self):
    #Do stuff

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