django/tests/test_runner/test_debug_sql.py

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import unittest
from io import StringIO
from django.db import connection
from django.test import TestCase
from django.test.runner import DiscoverRunner
from .models import Person
@unittest.skipUnless(
connection.vendor == "sqlite", "Only run on sqlite so we can check output SQL."
)
class TestDebugSQL(unittest.TestCase):
class PassingTest(TestCase):
def runTest(self):
Person.objects.filter(first_name="pass").count()
class FailingTest(TestCase):
def runTest(self):
Person.objects.filter(first_name="fail").count()
self.fail()
class ErrorTest(TestCase):
def runTest(self):
Person.objects.filter(first_name="error").count()
raise Exception
class ErrorSetUpTestDataTest(TestCase):
@classmethod
def setUpTestData(cls):
raise Exception
def runTest(self):
pass
class PassingSubTest(TestCase):
def runTest(self):
with self.subTest():
Person.objects.filter(first_name="subtest-pass").count()
class FailingSubTest(TestCase):
def runTest(self):
with self.subTest():
Person.objects.filter(first_name="subtest-fail").count()
self.fail()
class ErrorSubTest(TestCase):
def runTest(self):
with self.subTest():
Person.objects.filter(first_name="subtest-error").count()
raise Exception
def _test_output(self, verbosity):
runner = DiscoverRunner(debug_sql=True, verbosity=0)
suite = runner.test_suite()
suite.addTest(self.FailingTest())
suite.addTest(self.ErrorTest())
suite.addTest(self.PassingTest())
suite.addTest(self.PassingSubTest())
suite.addTest(self.FailingSubTest())
suite.addTest(self.ErrorSubTest())
old_config = runner.setup_databases()
stream = StringIO()
resultclass = runner.get_resultclass()
runner.test_runner(
verbosity=verbosity,
stream=stream,
resultclass=resultclass,
).run(suite)
runner.teardown_databases(old_config)
return stream.getvalue()
def test_output_normal(self):
full_output = self._test_output(1)
for output in self.expected_outputs:
self.assertIn(output, full_output)
for output in self.verbose_expected_outputs:
self.assertNotIn(output, full_output)
def test_output_verbose(self):
full_output = self._test_output(2)
for output in self.expected_outputs:
self.assertIn(output, full_output)
for output in self.verbose_expected_outputs:
self.assertIn(output, full_output)
expected_outputs = [
(
"""SELECT COUNT(*) AS "__count" """
"""FROM "test_runner_person" WHERE """
""""test_runner_person"."first_name" = 'error';"""
),
(
"""SELECT COUNT(*) AS "__count" """
"""FROM "test_runner_person" WHERE """
""""test_runner_person"."first_name" = 'fail';"""
),
(
"""SELECT COUNT(*) AS "__count" """
"""FROM "test_runner_person" WHERE """
""""test_runner_person"."first_name" = 'subtest-error';"""
),
(
"""SELECT COUNT(*) AS "__count" """
"""FROM "test_runner_person" WHERE """
""""test_runner_person"."first_name" = 'subtest-fail';"""
),
]
verbose_expected_outputs = [
"runTest (test_runner.test_debug_sql.TestDebugSQL.FailingTest) ... FAIL",
"runTest (test_runner.test_debug_sql.TestDebugSQL.ErrorTest) ... ERROR",
"runTest (test_runner.test_debug_sql.TestDebugSQL.PassingTest) ... ok",
# If there are errors/failures in subtests but not in test itself,
# the status is not written. That behavior comes from Python.
"runTest (test_runner.test_debug_sql.TestDebugSQL.FailingSubTest) ...",
"runTest (test_runner.test_debug_sql.TestDebugSQL.ErrorSubTest) ...",
(
"""SELECT COUNT(*) AS "__count" """
"""FROM "test_runner_person" WHERE """
""""test_runner_person"."first_name" = 'pass';"""
),
(
"""SELECT COUNT(*) AS "__count" """
"""FROM "test_runner_person" WHERE """
""""test_runner_person"."first_name" = 'subtest-pass';"""
),
]
def test_setupclass_exception(self):
runner = DiscoverRunner(debug_sql=True, verbosity=0)
suite = runner.test_suite()
suite.addTest(self.ErrorSetUpTestDataTest())
old_config = runner.setup_databases()
stream = StringIO()
runner.test_runner(
verbosity=0,
stream=stream,
resultclass=runner.get_resultclass(),
).run(suite)
runner.teardown_databases(old_config)
output = stream.getvalue()
self.assertIn(
"ERROR: setUpClass "
"(test_runner.test_debug_sql.TestDebugSQL.ErrorSetUpTestDataTest)",
output,
)