用鼻子重复一次或多次测试 [英] Repeated single or multiple tests with Nose

问题描述

类似于此问题，我想让鼻子进行n次测试(或所有测试)，但不能同时进行 .

Similar to this question, I'd like to have Nose run a test (or all tests) n times -- but not in parallel.

我在一个项目中有几百个测试；一些是一些简单的单元测试.其他是带有某种程度的并发性的集成测试.经常在调试测试时，我想更击中"测试； bash循环可以工作，但是会产生很多混乱的输出-不再有单个的".每次通过测试.能够胜任某些测试的选定测试的能力似乎是要求Nose进行的自然选择，但我在文档中的任何地方都没有找到它.

I have a few hundred tests in a project; some are some simple unit tests. Others are integration tests w/ some degree of concurrency. Frequently when debugging tests I want to "hit" a test harder; a bash loop works, but makes for a lot of cluttered output -- no more nice single "." for each passing test. Having the ability to beat on the selected tests for some number of trials seems like a natural thing to ask Nose to do, but I haven't found it anywhere in the docs.

让Nose做到这一点的最简单方法是什么(bash循环除外)?

What's the simplest way to get Nose to do this (other than a bash loop)?

推荐答案

您可以

You can write a nose test as a generator, and nose will then run each function yielded:

def check_something(arg):
    # some test ...

def test_something():
    for arg in some_sequence:
        yield (check_something, arg)

使用 nose-testconfig ，您可以使测试次数成为命令行参数:

Using nose-testconfig, you could make the number of test runs a command line argument:

from testconfig import config

# ...

def test_something():
    for n in range(int(config.get("runs", 1))):
        yield (check_something, arg)

您希望在命令行中使用例如

Which you'd call from the command line with e.g.

$ nosetests --tc=runs:5

...多次运行.

或者(也使用鼻子测试配置)，您可以编写一个装饰器:

Alternatively (but also using nose-testconfig), you could write a decorator:

from functools import wraps
from testconfig import config

def multi(fn):
    @wraps(fn)
    def wrapper():
        for n in range(int(config.get("runs", 1))):
            fn()
    return wrapper

@multi
def test_something():
    # some test ...

然后，如果要将测试分为不同的组，每个组都有自己的命令行参数来表示运行次数:

And then, if you want to divide your tests into different groups, each with their own command line argument for the number of runs:

from functools import wraps
from testconfig import config

def multi(cmd_line_arg):
    def wrap(fn):
        @wraps(fn)
        def wrapper():
            for n in range(int(config.get(cmd_line_arg, 1))):
                fn()
        return wrapper
    return wrap

@multi("foo")
def test_something():
    # some test ...

@multi("bar")
def test_something_else():
    # some test ...

您可以这样拨打电话:

$ nosetests --tc=foo:3 --tc=bar:7

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