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# Copyright (c) 2010 testtools developers. See LICENSE for details.
"""Tests for the test runner logic."""
from unittest import TestSuite
import sys
from extras import try_import
fixtures = try_import('fixtures')
testresources = try_import('testresources')
import testtools
from testtools import TestCase, run
from testtools.compat import (
_b,
StringIO,
)
from testtools.matchers import Contains
if fixtures:
class SampleTestFixture(fixtures.Fixture):
"""Creates testtools.runexample temporarily."""
def __init__(self, broken=False):
"""Create a SampleTestFixture.
:param broken: If True, the sample file will not be importable.
"""
if not broken:
init_contents = _b("""\
from testtools import TestCase
class TestFoo(TestCase):
def test_bar(self):
pass
def test_quux(self):
pass
def test_suite():
from unittest import TestLoader
return TestLoader().loadTestsFromName(__name__)
""")
else:
init_contents = b"class not in\n"
self.package = fixtures.PythonPackage(
'runexample', [('__init__.py', init_contents)])
def setUp(self):
super(SampleTestFixture, self).setUp()
self.useFixture(self.package)
testtools.__path__.append(self.package.base)
self.addCleanup(testtools.__path__.remove, self.package.base)
self.addCleanup(sys.modules.pop, 'testtools.runexample', None)
if fixtures and testresources:
class SampleResourcedFixture(fixtures.Fixture):
"""Creates a test suite that uses testresources."""
def __init__(self):
super(SampleResourcedFixture, self).__init__()
self.package = fixtures.PythonPackage(
'resourceexample', [('__init__.py', _b("""
from fixtures import Fixture
from testresources import (
FixtureResource,
OptimisingTestSuite,
ResourcedTestCase,
)
from testtools import TestCase
class Printer(Fixture):
def setUp(self):
super(Printer, self).setUp()
print('Setting up Printer')
def reset(self):
pass
class TestFoo(TestCase, ResourcedTestCase):
# When run, this will print just one Setting up Printer, unless the
# OptimisingTestSuite is not honoured, when one per test case will print.
resources=[('res', FixtureResource(Printer()))]
def test_bar(self):
pass
def test_foo(self):
pass
def test_quux(self):
pass
def test_suite():
from unittest import TestLoader
return OptimisingTestSuite(TestLoader().loadTestsFromName(__name__))
"""))])
def setUp(self):
super(SampleResourcedFixture, self).setUp()
self.useFixture(self.package)
self.addCleanup(testtools.__path__.remove, self.package.base)
testtools.__path__.append(self.package.base)
class TestRun(TestCase):
def setUp(self):
super(TestRun, self).setUp()
if fixtures is None:
self.skipTest("Need fixtures")
def test_run_custom_list(self):
self.useFixture(SampleTestFixture())
tests = []
class CaptureList(run.TestToolsTestRunner):
def list(self, test):
tests.append(set([case.id() for case
in testtools.testsuite.iterate_tests(test)]))
out = StringIO()
try:
program = run.TestProgram(
argv=['prog', '-l', 'testtools.runexample.test_suite'],
stdout=out, testRunner=CaptureList)
except SystemExit:
exc_info = sys.exc_info()
raise AssertionError("-l tried to exit. %r" % exc_info[1])
self.assertEqual([set(['testtools.runexample.TestFoo.test_bar',
'testtools.runexample.TestFoo.test_quux'])], tests)
def test_run_list(self):
self.useFixture(SampleTestFixture())
out = StringIO()
try:
run.main(['prog', '-l', 'testtools.runexample.test_suite'], out)
except SystemExit:
exc_info = sys.exc_info()
raise AssertionError("-l tried to exit. %r" % exc_info[1])
self.assertEqual("""testtools.runexample.TestFoo.test_bar
testtools.runexample.TestFoo.test_quux
""", out.getvalue())
def test_run_list_failed_import(self):
if not run.have_discover:
self.skipTest("Need discover")
broken = self.useFixture(SampleTestFixture(broken=True))
out = StringIO()
exc = self.assertRaises(
SystemExit,
run.main, ['prog', 'discover', '-l', broken.package.base, '*.py'], out)
self.assertEqual(2, exc.args[0])
self.assertEqual("""Failed to import
runexample.__init__
""", out.getvalue())
def test_run_orders_tests(self):
self.useFixture(SampleTestFixture())
out = StringIO()
# We load two tests - one that exists and one that doesn't, and we
# should get the one that exists and neither the one that doesn't nor
# the unmentioned one that does.
tempdir = self.useFixture(fixtures.TempDir())
tempname = tempdir.path + '/tests.list'
f = open(tempname, 'wb')
try:
f.write(_b("""
testtools.runexample.TestFoo.test_bar
testtools.runexample.missingtest
"""))
finally:
f.close()
try:
run.main(['prog', '-l', '--load-list', tempname,
'testtools.runexample.test_suite'], out)
except SystemExit:
exc_info = sys.exc_info()
raise AssertionError("-l tried to exit. %r" % exc_info[1])
self.assertEqual("""testtools.runexample.TestFoo.test_bar
""", out.getvalue())
def test_run_load_list(self):
self.useFixture(SampleTestFixture())
out = StringIO()
# We load two tests - one that exists and one that doesn't, and we
# should get the one that exists and neither the one that doesn't nor
# the unmentioned one that does.
tempdir = self.useFixture(fixtures.TempDir())
tempname = tempdir.path + '/tests.list'
f = open(tempname, 'wb')
try:
f.write(_b("""
testtools.runexample.TestFoo.test_bar
testtools.runexample.missingtest
"""))
finally:
f.close()
try:
run.main(['prog', '-l', '--load-list', tempname,
'testtools.runexample.test_suite'], out)
except SystemExit:
exc_info = sys.exc_info()
raise AssertionError("-l tried to exit. %r" % exc_info[1])
self.assertEqual("""testtools.runexample.TestFoo.test_bar
""", out.getvalue())
def test_load_list_preserves_custom_suites(self):
if testresources is None:
self.skipTest("Need testresources")
self.useFixture(SampleResourcedFixture())
# We load two tests, not loading one. Both share a resource, so we
# should see just one resource setup occur.
tempdir = self.useFixture(fixtures.TempDir())
tempname = tempdir.path + '/tests.list'
f = open(tempname, 'wb')
try:
f.write(_b("""
testtools.resourceexample.TestFoo.test_bar
testtools.resourceexample.TestFoo.test_foo
"""))
finally:
f.close()
stdout = self.useFixture(fixtures.StringStream('stdout'))
with fixtures.MonkeyPatch('sys.stdout', stdout.stream):
try:
run.main(['prog', '--load-list', tempname,
'testtools.resourceexample.test_suite'], stdout.stream)
except SystemExit:
# Evil resides in TestProgram.
pass
out = stdout.getDetails()['stdout'].as_text()
self.assertEqual(1, out.count('Setting up Printer'), "%r" % out)
def test_run_failfast(self):
stdout = self.useFixture(fixtures.StringStream('stdout'))
class Failing(TestCase):
def test_a(self):
self.fail('a')
def test_b(self):
self.fail('b')
runner = run.TestToolsTestRunner(failfast=True)
with fixtures.MonkeyPatch('sys.stdout', stdout.stream):
runner.run(TestSuite([Failing('test_a'), Failing('test_b')]))
self.assertThat(
stdout.getDetails()['stdout'].as_text(), Contains('Ran 1 test'))
def test_suite():
from unittest import TestLoader
return TestLoader().loadTestsFromName(__name__)
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