[英]Customizing pytest parameterized test name
I've the following tests:我有以下测试:
@pytest.mark.parametrize(
"nums",
[[3, 1, 5, 4, 2], [2, 6, 4, 3, 1, 5], [1, 5, 6, 4, 3, 2]]
)
def test_cyclic_sort(nums):
pass
@pytest.mark.parametrize(
"nums, missing",
[([4, 0, 3, 1], 2)]
)
def test_find_missing_number(nums, missing):
pass
I'd like to customize the test names to include the input array.我想自定义测试名称以包含输入数组。 I've read the pytest docs , and this question and this question , but none answer the following questions:
我已经阅读了pytest 文档,以及这个问题和这个问题,但没有人回答以下问题:
@staticmethod
. @staticmethod
。 Trying to reference the static method with TestClass.static_method
from inside TestClass
gives an error in PyCharm;TestClass
内部使用TestClass.static_method
引用 static 方法会导致 PyCharm 出现错误; what is the correct syntax for doing this? Edit: Created https://github.com/pytest-dev/pytest/issues/8448 .编辑:创建https://github.com/pytest-dev/pytest/issues/8448 。
When using a callable for the ids
keyword, it will be called with a single argument: the value of the test parameter being parametrized.当为
ids
关键字使用可调用对象时,将使用单个参数调用它:被参数化的测试参数的值。 The callable ids
return a string, which will be used in square brackets as the test name suffix.可调用的
ids
返回一个字符串,该字符串将在方括号中用作测试名称后缀。
If the test is parametrizing over multiple values, the function will still be called with a single argument, but it will be called multiple times per test.如果测试对多个值进行参数化,则 function 仍将使用单个参数调用,但每次测试将调用多次。 The generated name will be joined with dashes, something like
生成的名称将与破折号相连,例如
"-".join([idfunc(val) for val in parameters])
For example:例如:
test_something[val1-val2-val3]
Here is the join in the pytest source . 这是 pytest 源中的连接。
To use a static method, this syntax works:要使用 static 方法,此语法有效:
class TestExample:
@staticmethod
def idfunc(val):
return f"foo{val}"
@pytest.mark.parametrize(
"x, y",
[
[1, 2],
["a", "b"],
],
ids=idfunc.__func__,
)
def test_vals(self, x, y):
assert x
assert y
This will generate two tests, calling idfunc
four times as described above.这将生成两个测试,如上所述调用
idfunc
四次。
TestExample::test_vals[foo1-foo2]
TestExample::test_vals[fooa-foob]
I like wims answer, and this is intended as a comment to his answer (I dont have the points to make a comment).我喜欢wims的回答,这是对他的回答的评论(我没有发表评论的要点)。 This seems more pythonic to me.
这对我来说似乎更pythonic。 It also helps avoid using a static method.
它还有助于避免使用 static 方法。
class TestExample:
@pytest.mark.parametrize(
"x, y",
[
[1, 2],
["a", "b"],
],
ids= lamba val : f"foo{val}"
)
def test_vals(self, x, y):
assert x
assert y
This will have the same output:这将具有相同的 output:
TestExample::test_vals[foo1-foo2]
TestExample::test_vals[fooa-foob]
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