介绍

coverage 在单元测试中可以显示覆盖率，显示更清晰的数据

• 支持python 2.6-python3.X
• pip install coverage安装

测试代码

def add(a, b):
    return a + b
 
 
def subtract(a, b):
    return a - b
 
 
def multiply(a, b):
    return a * b
 
 
def divide(numerator, denominator):
    return float(numerator) / denominator

• unittest测试

import mymath
import unittest
 
class TestAdd(unittest.TestCase):
    """
    Test the add function from the mymath library
    """
 
    def test_add_integers(self):
        """
        Test that the addition of two integers returns the correct total
        """
        result = mymath.add(1, 2)
        self.assertEqual(result, 3)
 
    def test_add_floats(self):
        """
        Test that the addition of two floats returns the correct result
        """
        result = mymath.add(10.5, 2)
        self.assertEqual(result, 12.5)
 
    def test_add_strings(self):
        """
        Test the addition of two strings returns the two string as one
        concatenated string
        """
        result = mymath.add('abc', 'def')
        self.assertEqual(result, 'abcdef')
 
 
if __name__ == '__main__':
    unittest.main()

• 命名运行

coverage run test_mymath.py
coverage report -m

• 结果

Paste_Image.png

更多高级用法:http://www.blog.pythonlibrary.org/2016/07/20/an-intro-to-coverage-py/