python之parameterized模块

parameterized扩展了py.test参数化测试，unittest参数化测试。

<1>一个小练习

import unittest
import math

@parameterized([
    (2, 2, 4),
    (2, 3, 8),
    (1, 9, 1),
    (0, 9, 0),
])
def test_pow(base, exponent, expected):
    assert_equal(math.pow(base, exponent), expected)

class TestMathUnitTest(unittest.TestCase):
    @parameterized.expand([
        ("negative", -1.5, -2.0),
        ("integer", 1, 1.0),
        ("large fraction", 1.6, 1),
    ])
    def test_floor(self, name, input, expected):
        assert_equal(math.floor(input), expected)

用unittest运行，结果如下:

D:\pythonstudy\WonderStitch>python3 -m unittest -v test
test_floor_0_negative (test.TestMathUnitTest) ... ok
test_floor_1_integer (test.TestMathUnitTest) ... ok
test_floor_2_large_fraction (test.TestMathUnitTest) ... ok

----------------------------------------------------------------------
Ran 3 tests in 0.002s

OK

用nose运行，结果如下:

D:\pythonstudy\WonderStitch>nosetests -v test.py
test_floor_0_negative (test.TestMathUnitTest) ... ok
test_floor_1_integer (test.TestMathUnitTest) ... ok
test_floor_2_large_fraction (test.TestMathUnitTest) ... ok
test.test_pow(2, 2, 4) ... ok
test.test_pow(2, 3, 8) ... ok
test.test_pow(1, 9, 1) ... ok
test.test_pow(0, 9, 0) ... ok

----------------------------------------------------------------------
Ran 7 tests in 0.004s

OK

注意：因为UNITTEST不支持测试装饰器，故只有使用@parameterized.expand创建的测试才会被执行。

>>>>>待续