Created
July 9, 2014 18:44
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Example code from the book Test-Driven Development By Example by Kent Beck
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#!/usr/bin/env python | |
''' | |
TODO | |
1. Invoke tearDown even if the test method fails | |
2. Catch and report setUp errors | |
3. Create TestSuite from a TestCase class | |
''' | |
class TestCase(object): | |
def __init__(self, name): | |
self.name = name | |
def setUp(self): | |
pass | |
def run(self, result): | |
result.testStarted() | |
self.setUp() | |
try: | |
method = getattr(self, self.name) | |
method() | |
except Exception as error: | |
if not error: | |
print error | |
result.testFailed() | |
self.tearDown() | |
return result | |
def tearDown(self): | |
pass | |
class TestResult(object): | |
def __init__(self): | |
self.runCount = 0 | |
self.errorCount = 0 | |
def testStarted(self): | |
self.runCount += 1 | |
def testFailed(self): | |
self.errorCount += 1 | |
def summary(self): | |
return "%d run, %d failed" % (self.runCount, self.errorCount) | |
class WasRun(TestCase): | |
def __init__(self, name): | |
TestCase.__init__(self, name) | |
def setUp(self): | |
self.log = "setUp " | |
def testMethod(self): | |
self.log += "testMethod " | |
def testBrokenMethod(self): | |
raise Exception | |
def tearDown(self): | |
self.log += "tearDown " | |
class TestCaseTest(TestCase): | |
def setUp(self): | |
self.result = TestResult() | |
def testTemplateMethod(self): | |
test = WasRun("testMethod") | |
test.run(self.result) | |
assert("setUp testMethod tearDown " == test.log) | |
def testResult(self): | |
test = WasRun("testMethod") | |
test.run(self.result) | |
assert("1 run, 0 failed" == self.result.summary()) | |
def testFailedResult(self): | |
test = WasRun("testBrokenMethod") | |
test.run(self.result) | |
assert("1 run, 1 failed" == self.result.summary()) | |
def testFailedResultFormatting(self): | |
self.result.testStarted() | |
self.result.testFailed() | |
assert("1 run, 1 failed" == self.result.summary()) | |
def testSuite(self): | |
suite = TestSuite() | |
suite.add(WasRun("testMethod")) | |
suite.add(WasRun("testBrokenMethod")) | |
suite.run(self.result) | |
assert("2 run, 1 failed" == self.result.summary()) | |
class TestSuite(object): | |
def __init__(self): | |
self.tests = [] | |
def add(self, test): | |
self.tests.append(test) | |
def run(self, result): | |
for test in self.tests: | |
test.run(result) | |
suite = TestSuite() | |
suite.add(TestCaseTest("testTemplateMethod")) | |
suite.add(TestCaseTest("testResult")) | |
suite.add(TestCaseTest("testFailedResult")) | |
suite.add(TestCaseTest("testFailedResultFormatting")) | |
suite.add(TestCaseTest("testSuite")) | |
result = TestResult() | |
suite.run(result) | |
print result.summary() |
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