Question

如何在不执行py.test中的父脚本的情况下运行测试？目前我从目录Project_dir运行命令pytest -v，这将运行 script.py 并最终进行测试。理想情况下，只需要运行测试。这是我当前的目录设置：

Project_dir
    script.py
    test
        test_script.py

script.py

def add(a,b):
    added = a + b
    return added

x = add(1,3)
print x, 'yup'

test_script.py

import script

def test_add():
    assert script.add(3,4) == 7

工作目录： Project_dir

命令： pytest -vs

========================================== test session starts ==========================================
platform darwin -- Python 2.7.10, pytest-3.0.7, py-1.4.33, pluggy-0.4.0 -- /usr/bin/python
cachedir: .cache
rootdir: **, inifile:
plugins: cov-2.4.0
collecting 0 items
Sum is 4
collected 1 items

test/test_script.py::test_add PASSED

======================================= 1 passed in 0.00 seconds ========================================

Sum is 4显示 script.py 完全执行而不仅仅是测试。当 script.py 作为模块导入时，会发生这种情况。但我一直认为必须有办法避免这种情况，直接执行测试。

Answer 1

在Python中导入模块会执行其中的所有顶级代码。

您应该将代码放在if __name__ == '__main__':中，以便它只在您运行脚本时执行（但在导入时不会执行） - 请参阅例如this answer了解详情。

Answer 2

尝试Ignore paths during test collection

rs = RenderScript.create(this);
yuvToRgbIntrinsic = ScriptIntrinsicYuvToRGB.create(rs, Element.U8_4(rs));

// you don´t need Type.Builder objects , with cameraPreviewWidth and cameraPreviewHeight do:
int yuvDatalength = cameraPreviewWidth*cameraPreviewHeight*3/2;  // this is 12 bit per pixel  
aIn = Allocation.createSized(rs, Element.U8(rs), yuvDatalength);

// of course you will need the Bitmap
bmpout = Bitmap.createBitmap(cameraPreviewWidth, cameraPreviewHeight, Bitmap.Config.ARGB_8888);

// create output allocation from bitmap
aOut = Allocation.createFromBitmap(rs,bmpout);  // this simple !

// set the script´s in-allocation, this has to be done only once
yuvToRgbIntrinsic.setInput(aIn);

或者在目录上运行pytest：

pytest -v --ignore=script.py

请参阅Specifying tests / selecting tests

Answer 3

如何运行pytest test/？只是为了说清楚： https://docs.pytest.org/en/latest/usage.html#specifying-tests-selecting-tests

pytest somepath      # run all tests below somepath

在不执行父脚本的情况下仅使用pytest执行测试

3 个答案: