372 lines
15 KiB
Python
372 lines
15 KiB
Python
from django.conf import settings
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from django.core.exceptions import ImproperlyConfigured
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from django.db.models import get_app, get_apps
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from django.test import _doctest as doctest
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from django.test.utils import setup_test_environment, teardown_test_environment
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from django.test.testcases import OutputChecker, DocTestRunner, TestCase
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from django.utils import unittest
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try:
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all
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except NameError:
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from django.utils.itercompat import all
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__all__ = ('DjangoTestRunner', 'DjangoTestSuiteRunner', 'run_tests')
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# The module name for tests outside models.py
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TEST_MODULE = 'tests'
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doctestOutputChecker = OutputChecker()
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class DjangoTestRunner(unittest.TextTestRunner):
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def __init__(self, *args, **kwargs):
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import warnings
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warnings.warn(
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"DjangoTestRunner is deprecated; it's functionality is indistinguishable from TextTestRunner",
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PendingDeprecationWarning
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)
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super(DjangoTestRunner, self).__init__(*args, **kwargs)
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def get_tests(app_module):
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try:
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app_path = app_module.__name__.split('.')[:-1]
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test_module = __import__('.'.join(app_path + [TEST_MODULE]), {}, {}, TEST_MODULE)
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except ImportError, e:
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# Couldn't import tests.py. Was it due to a missing file, or
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# due to an import error in a tests.py that actually exists?
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import os.path
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from imp import find_module
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try:
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mod = find_module(TEST_MODULE, [os.path.dirname(app_module.__file__)])
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except ImportError:
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# 'tests' module doesn't exist. Move on.
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test_module = None
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else:
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# The module exists, so there must be an import error in the
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# test module itself. We don't need the module; so if the
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# module was a single file module (i.e., tests.py), close the file
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# handle returned by find_module. Otherwise, the test module
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# is a directory, and there is nothing to close.
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if mod[0]:
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mod[0].close()
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raise
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return test_module
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def build_suite(app_module):
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"Create a complete Django test suite for the provided application module"
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suite = unittest.TestSuite()
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# Load unit and doctests in the models.py module. If module has
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# a suite() method, use it. Otherwise build the test suite ourselves.
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if hasattr(app_module, 'suite'):
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suite.addTest(app_module.suite())
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else:
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suite.addTest(unittest.defaultTestLoader.loadTestsFromModule(app_module))
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try:
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suite.addTest(doctest.DocTestSuite(app_module,
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checker=doctestOutputChecker,
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runner=DocTestRunner))
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except ValueError:
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# No doc tests in models.py
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pass
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# Check to see if a separate 'tests' module exists parallel to the
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# models module
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test_module = get_tests(app_module)
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if test_module:
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# Load unit and doctests in the tests.py module. If module has
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# a suite() method, use it. Otherwise build the test suite ourselves.
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if hasattr(test_module, 'suite'):
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suite.addTest(test_module.suite())
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else:
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suite.addTest(unittest.defaultTestLoader.loadTestsFromModule(test_module))
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try:
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suite.addTest(doctest.DocTestSuite(test_module,
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checker=doctestOutputChecker,
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runner=DocTestRunner))
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except ValueError:
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# No doc tests in tests.py
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pass
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return suite
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def build_test(label):
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"""Construct a test case with the specified label. Label should be of the
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form model.TestClass or model.TestClass.test_method. Returns an
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instantiated test or test suite corresponding to the label provided.
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"""
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parts = label.split('.')
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if len(parts) < 2 or len(parts) > 3:
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raise ValueError("Test label '%s' should be of the form app.TestCase or app.TestCase.test_method" % label)
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#
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# First, look for TestCase instances with a name that matches
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#
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app_module = get_app(parts[0])
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test_module = get_tests(app_module)
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TestClass = getattr(app_module, parts[1], None)
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# Couldn't find the test class in models.py; look in tests.py
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if TestClass is None:
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if test_module:
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TestClass = getattr(test_module, parts[1], None)
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try:
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if issubclass(TestClass, unittest.TestCase):
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if len(parts) == 2: # label is app.TestClass
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try:
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return unittest.TestLoader().loadTestsFromTestCase(TestClass)
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except TypeError:
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raise ValueError("Test label '%s' does not refer to a test class" % label)
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else: # label is app.TestClass.test_method
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return TestClass(parts[2])
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except TypeError:
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# TestClass isn't a TestClass - it must be a method or normal class
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pass
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#
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# If there isn't a TestCase, look for a doctest that matches
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#
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tests = []
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for module in app_module, test_module:
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try:
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doctests = doctest.DocTestSuite(module,
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checker=doctestOutputChecker,
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runner=DocTestRunner)
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# Now iterate over the suite, looking for doctests whose name
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# matches the pattern that was given
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for test in doctests:
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if test._dt_test.name in (
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'%s.%s' % (module.__name__, '.'.join(parts[1:])),
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'%s.__test__.%s' % (module.__name__, '.'.join(parts[1:]))):
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tests.append(test)
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except ValueError:
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# No doctests found.
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pass
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# If no tests were found, then we were given a bad test label.
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if not tests:
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raise ValueError("Test label '%s' does not refer to a test" % label)
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# Construct a suite out of the tests that matched.
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return unittest.TestSuite(tests)
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def partition_suite(suite, classes, bins):
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"""
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Partitions a test suite by test type.
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classes is a sequence of types
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bins is a sequence of TestSuites, one more than classes
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Tests of type classes[i] are added to bins[i],
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tests with no match found in classes are place in bins[-1]
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"""
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for test in suite:
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if isinstance(test, unittest.TestSuite):
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partition_suite(test, classes, bins)
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else:
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for i in range(len(classes)):
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if isinstance(test, classes[i]):
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bins[i].addTest(test)
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break
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else:
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bins[-1].addTest(test)
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def reorder_suite(suite, classes):
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"""
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Reorders a test suite by test type.
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classes is a sequence of types
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All tests of type clases[0] are placed first, then tests of type classes[1], etc.
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Tests with no match in classes are placed last.
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"""
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class_count = len(classes)
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bins = [unittest.TestSuite() for i in range(class_count+1)]
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partition_suite(suite, classes, bins)
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for i in range(class_count):
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bins[0].addTests(bins[i+1])
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return bins[0]
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def dependency_ordered(test_databases, dependencies):
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"""Reorder test_databases into an order that honors the dependencies
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described in TEST_DEPENDENCIES.
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"""
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ordered_test_databases = []
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resolved_databases = set()
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while test_databases:
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changed = False
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deferred = []
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while test_databases:
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signature, (db_name, aliases) = test_databases.pop()
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dependencies_satisfied = True
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for alias in aliases:
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if alias in dependencies:
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if all(a in resolved_databases for a in dependencies[alias]):
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# all dependencies for this alias are satisfied
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dependencies.pop(alias)
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resolved_databases.add(alias)
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else:
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dependencies_satisfied = False
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else:
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resolved_databases.add(alias)
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if dependencies_satisfied:
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ordered_test_databases.append((signature, (db_name, aliases)))
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changed = True
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else:
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deferred.append((signature, (db_name, aliases)))
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if not changed:
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raise ImproperlyConfigured("Circular dependency in TEST_DEPENDENCIES")
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test_databases = deferred
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return ordered_test_databases
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class DjangoTestSuiteRunner(object):
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def __init__(self, verbosity=1, interactive=True, failfast=True, **kwargs):
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self.verbosity = verbosity
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self.interactive = interactive
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self.failfast = failfast
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def setup_test_environment(self, **kwargs):
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setup_test_environment()
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settings.DEBUG = False
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unittest.installHandler()
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def build_suite(self, test_labels, extra_tests=None, **kwargs):
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suite = unittest.TestSuite()
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if test_labels:
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for label in test_labels:
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if '.' in label:
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suite.addTest(build_test(label))
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else:
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app = get_app(label)
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suite.addTest(build_suite(app))
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else:
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for app in get_apps():
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suite.addTest(build_suite(app))
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if extra_tests:
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for test in extra_tests:
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suite.addTest(test)
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return reorder_suite(suite, (TestCase,))
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def setup_databases(self, **kwargs):
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from django.db import connections, DEFAULT_DB_ALIAS
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# First pass -- work out which databases actually need to be created,
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# and which ones are test mirrors or duplicate entries in DATABASES
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mirrored_aliases = {}
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test_databases = {}
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dependencies = {}
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for alias in connections:
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connection = connections[alias]
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if connection.settings_dict['TEST_MIRROR']:
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# If the database is marked as a test mirror, save
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# the alias.
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mirrored_aliases[alias] = connection.settings_dict['TEST_MIRROR']
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else:
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# Store a tuple with DB parameters that uniquely identify it.
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# If we have two aliases with the same values for that tuple,
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# we only need to create the test database once.
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item = test_databases.setdefault(
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connection.creation.test_db_signature(),
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(connection.settings_dict['NAME'], [])
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)
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item[1].append(alias)
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if 'TEST_DEPENDENCIES' in connection.settings_dict:
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dependencies[alias] = connection.settings_dict['TEST_DEPENDENCIES']
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else:
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if alias != DEFAULT_DB_ALIAS:
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dependencies[alias] = connection.settings_dict.get('TEST_DEPENDENCIES', [DEFAULT_DB_ALIAS])
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# Second pass -- actually create the databases.
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old_names = []
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mirrors = []
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for signature, (db_name, aliases) in dependency_ordered(test_databases.items(), dependencies):
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# Actually create the database for the first connection
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connection = connections[aliases[0]]
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old_names.append((connection, db_name, True))
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test_db_name = connection.creation.create_test_db(self.verbosity, autoclobber=not self.interactive)
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for alias in aliases[1:]:
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connection = connections[alias]
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if db_name:
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old_names.append((connection, db_name, False))
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connection.settings_dict['NAME'] = test_db_name
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else:
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# If settings_dict['NAME'] isn't defined, we have a backend where
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# the name isn't important -- e.g., SQLite, which uses :memory:.
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# Force create the database instead of assuming it's a duplicate.
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old_names.append((connection, db_name, True))
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connection.creation.create_test_db(self.verbosity, autoclobber=not self.interactive)
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for alias, mirror_alias in mirrored_aliases.items():
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mirrors.append((alias, connections[alias].settings_dict['NAME']))
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connections[alias].settings_dict['NAME'] = connections[mirror_alias].settings_dict['NAME']
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return old_names, mirrors
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def run_suite(self, suite, **kwargs):
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return unittest.TextTestRunner(verbosity=self.verbosity, failfast=self.failfast).run(suite)
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def teardown_databases(self, old_config, **kwargs):
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from django.db import connections
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old_names, mirrors = old_config
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# Point all the mirrors back to the originals
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for alias, old_name in mirrors:
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connections[alias].settings_dict['NAME'] = old_name
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# Destroy all the non-mirror databases
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for connection, old_name, destroy in old_names:
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if destroy:
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connection.creation.destroy_test_db(old_name, self.verbosity)
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else:
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connection.settings_dict['NAME'] = old_name
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def teardown_test_environment(self, **kwargs):
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unittest.removeHandler()
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teardown_test_environment()
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def suite_result(self, suite, result, **kwargs):
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return len(result.failures) + len(result.errors)
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def run_tests(self, test_labels, extra_tests=None, **kwargs):
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"""
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Run the unit tests for all the test labels in the provided list.
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Labels must be of the form:
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- app.TestClass.test_method
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Run a single specific test method
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- app.TestClass
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Run all the test methods in a given class
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- app
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Search for doctests and unittests in the named application.
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When looking for tests, the test runner will look in the models and
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tests modules for the application.
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A list of 'extra' tests may also be provided; these tests
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will be added to the test suite.
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Returns the number of tests that failed.
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"""
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self.setup_test_environment()
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suite = self.build_suite(test_labels, extra_tests)
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old_config = self.setup_databases()
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result = self.run_suite(suite)
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self.teardown_databases(old_config)
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self.teardown_test_environment()
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return self.suite_result(suite, result)
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def run_tests(test_labels, verbosity=1, interactive=True, failfast=False, extra_tests=None):
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import warnings
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warnings.warn(
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'The run_tests() test runner has been deprecated in favor of DjangoTestSuiteRunner.',
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DeprecationWarning
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)
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test_runner = DjangoTestSuiteRunner(verbosity=verbosity, interactive=interactive, failfast=failfast)
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return test_runner.run_tests(test_labels, extra_tests=extra_tests)
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