python unittest 计数测试

Question

unittest 是否可以有一个选项来计算跳过测试的总测试数和运行的数量。在运行之后，测试失败的次数（我知道可以在输出中看到）。如果我想以编程方式使用它，我想将它转储到 json 中，那会很棒

非常感谢

Answer 1

我不知道 unittest 在 JSON 中报告的任何方式。我知道 nose 以 XML 格式输出结果：

nosetests --with-xunit --xunit-file=mytests.xml mytests.py

以下是此 XML 文件的摘录：

<testsuite name="nosetests" tests="3" errors="0" failures="1" skip="1">

如果您不介意 XML 格式，那么这是一个可以考虑的解决方案。我也听说nose有一个JSON插件，但是还没玩过

Answer 2

经过多次试验和错误，我终于让这个工作...

基于 scoffey's answer.

希望对您有所帮助。

import unittest

class MyTest(unittest.TestCase):

    currentResult = None # holds last result object passed to run method

    @classmethod
    def setResult(cls, amount, errors, failures, skipped):
        cls.amount, cls.errors, cls.failures, cls.skipped = \
            amount, errors, failures, skipped

    def tearDown(self):
        amount = self.currentResult.testsRun
        errors = self.currentResult.errors
        failures = self.currentResult.failures
        skipped = self.currentResult.skipped
        self.setResult(amount, errors, failures, skipped)

    @classmethod
    def tearDownClass(cls):
        print("\ntests run: " + str(cls.amount))
        print("errors: " + str(len(cls.errors)))
        print("failures: " + str(len(cls.failures)))
        print("success: " + str(cls.amount - len(cls.errors) - len(cls.failures)))
        print("skipped: " + str(len(cls.skipped)))

    def run(self, result=None):
        self.currentResult = result # remember result for use in tearDown
        unittest.TestCase.run(self, result) # call superclass run method

    def testA(self):
        self.assertTrue(True) # succeeds

    def testB(self):
        self.assertTrue(False) # fails

    def testC(self):
        self.assertTrue(1 + None is None) # raises TypeError

    @unittest.skip("skip it") # skipped
    def testD(self):
        self.assertTrue("whatever")

if __name__ == '__main__':
    unittest.main()

运行脚本

python test.py > result.txt

result.txt:

tests run: 3
errors: 1
failures: 1
success: 1
skipped: 1

我不确定这是最好的方法，但它确实有效。 unittest模块好用难精，现在感觉自己知之甚少

Answer 3

我使用单元测试 TestSuite (Ref)。

在运行之后，它 returns 一个 TextTestResult，其中包含一个包含失败、错误和已跳过的列表，一个包含 Test_runs 的值，等等。

这里有一个 "minimum" 工作示例，说明我将如何做。

#!/usr/bin/python3
# -*- coding: utf-8 -*-
import unittest


class TestDummy(unittest.TestCase):
    """A Dummy UnitTesting class."""

    def test_failure(self):
        """Fails on test."""
        self.fail(msg="Need a failure")

    @unittest.skip("Need a Skipper")
    def test_skipping(self):
        """Skippes on test."""
        pass

    def test_error(self):
        """Gives a error on test."""
        self.not_a_thing()

    def test_pass(self):
        """Need a test that passes."""
        pass


def warp_test_suite(testcase_class):
    """Load tests from a specific set of TestCase classes."""
    suite = unittest.TestSuite()
    tests = unittest.defaultTestLoader.loadTestsFromTestCase(testcase_class)
    suite.addTest(tests)
    return suite


if __name__ == "__main__":
    import json  # For saving a JSON-file

    # The test results dictionary, for the JSON.
    result_value = {"Failures": 0, "Errors": 0, "Skipped": 0, "Test Runs": 0}

    # Setup and run the Test
    runner = unittest.TextTestRunner()
    TextTestResult = runner.run(warp_test_suite(TestDummy))

    # Passes the Result
    result_value["Failures"] += len(TextTestResult.failures)
    result_value["Errors"] += len(TextTestResult.errors)
    result_value["Skipped"] += len(TextTestResult.skipped)
    result_value["Test Runs"] += TextTestResult.testsRun

    # Save the result to a JSON-file.
    with open("result_data.json", 'w') as fp:
            json.dump(result_value, fp, indent=3)

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