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test_management_command.py
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test_management_command.py
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# -*- coding: utf-8 -*-
import os
from unittest import mock
import logging
import importlib
from django.conf import settings
from django.core.management import call_command, find_commands, load_command_class
from django.test import TestCase
from io import StringIO
from django_extensions.management.modelviz import use_model, generate_graph_data
from django_extensions.management.commands.merge_model_instances import get_model_to_deduplicate, get_field_names, keep_first_or_last_instance
from . import force_color_support
from .testapp.models import Person, Name, Note, Personality, Club, Membership, Permission
from .testapp.jobs.hourly.test_hourly_job import HOURLY_JOB_MOCK
from .testapp.jobs.daily.test_daily_job import DAILY_JOB_MOCK
from .testapp.jobs.weekly.test_weekly_job import WEEKLY_JOB_MOCK
from .testapp.jobs.monthly.test_monthly_job import MONTHLY_JOB_MOCK
from .testapp.jobs.yearly.test_yearly_job import YEARLY_JOB_MOCK
class MockLoggingHandler(logging.Handler):
""" Mock logging handler to check for expected logs. """
def __init__(self, *args, **kwargs):
self.reset()
logging.Handler.__init__(self, *args, **kwargs)
def emit(self, record):
self.messages[record.levelname.lower()].append(record.getMessage())
def reset(self):
self.messages = {
'debug': [],
'info': [],
'warning': [],
'error': [],
'critical': [],
}
class CommandTest(TestCase):
def test_error_logging(self):
# Ensure command errors are properly logged and reraised
from django_extensions.management.base import logger
logger.addHandler(MockLoggingHandler())
module_path = "tests.management.commands.error_raising_command"
module = importlib.import_module(module_path)
error_raising_command = module.Command()
self.assertRaises(Exception, error_raising_command.execute)
handler = logger.handlers[0]
self.assertEqual(len(handler.messages['error']), 1)
class ShowTemplateTagsTests(TestCase):
def test_some_output(self):
out = StringIO()
call_command('show_template_tags', stdout=out)
output = out.getvalue()
# Once django_extension is installed during tests it should appear with
# its templatetags
self.assertIn('django_extensions', output)
# let's check at least one
self.assertIn('syntax_color', output)
class DescribeFormTests(TestCase):
def test_command(self):
out = StringIO()
call_command('describe_form', 'django_extensions.Secret', stdout=out)
output = out.getvalue()
self.assertIn("class SecretForm(forms.Form):", output)
self.assertRegex(output, r"name = forms.CharField\(.*max_length=255")
self.assertRegex(output, r"name = forms.CharField\(.*required=False")
self.assertRegex(output, r"name = forms.CharField\(.*label=u?'Name'")
self.assertRegex(output, r"text = forms.CharField\(.*required=False")
self.assertRegex(output, r"text = forms.CharField\(.*label=u?'Text'")
class CommandSignalTests(TestCase):
pre = None
post = None
def test_works(self):
from django_extensions.management.signals import post_command, pre_command
from django_extensions.management.commands.show_template_tags import Command
def pre(sender, **kwargs):
CommandSignalTests.pre = dict(**kwargs)
def post(sender, **kwargs):
CommandSignalTests.post = dict(**kwargs)
pre_command.connect(pre, Command)
post_command.connect(post, Command)
out = StringIO()
call_command('show_template_tags', stdout=out)
self.assertIn('args', CommandSignalTests.pre)
self.assertIn('kwargs', CommandSignalTests.pre)
self.assertIn('args', CommandSignalTests.post)
self.assertIn('kwargs', CommandSignalTests.post)
self.assertIn('outcome', CommandSignalTests.post)
class CommandClassTests(TestCase):
def setUp(self):
management_dir = os.path.join('django_extensions', 'management')
self.commands = find_commands(management_dir)
def test_load_commands(self):
"""Try to load every management command to catch exceptions."""
try:
for command in self.commands:
load_command_class('django_extensions', command)
except Exception as e:
self.fail("Can't load command class of {0}\n{1}".format(command, e))
class GraphModelsTests(TestCase):
"""
Tests for the `graph_models` management command.
"""
def test_use_model(self):
include_models = [
'NoWildcardInclude',
'Wildcard*InsideInclude',
'*WildcardPrefixInclude',
'WildcardSuffixInclude*',
'*WildcardBothInclude*',
]
exclude_models = [
'NoWildcardExclude',
'Wildcard*InsideExclude',
'*WildcardPrefixExclude',
'WildcardSuffixExclude*',
'*WildcardBothExclude*',
'*Include',
]
# Any model name should be used if neither include or exclude
# are defined.
self.assertTrue(use_model(
'SomeModel',
None,
None,
))
# Any model name should be allowed if `*` is in `include_models`.
self.assertTrue(use_model(
'SomeModel',
['OtherModel', '*', 'Wildcard*Model'],
None,
))
# No model name should be allowed if `*` is in `exclude_models`.
self.assertFalse(use_model(
'SomeModel',
None,
['OtherModel', '*', 'Wildcard*Model'],
))
# Some tests with the `include_models` defined above.
self.assertFalse(use_model(
'SomeModel',
include_models,
None,
))
self.assertTrue(use_model(
'NoWildcardInclude',
include_models,
None,
))
self.assertTrue(use_model(
'WildcardSomewhereInsideInclude',
include_models,
None,
))
self.assertTrue(use_model(
'MyWildcardPrefixInclude',
include_models,
None,
))
self.assertTrue(use_model(
'WildcardSuffixIncludeModel',
include_models,
None,
))
self.assertTrue(use_model(
'MyWildcardBothIncludeModel',
include_models,
None,
))
# Some tests with the `exclude_models` defined above.
self.assertTrue(use_model(
'SomeModel',
None,
exclude_models,
))
self.assertFalse(use_model(
'NoWildcardExclude',
None,
exclude_models,
))
self.assertFalse(use_model(
'WildcardSomewhereInsideExclude',
None,
exclude_models,
))
self.assertFalse(use_model(
'MyWildcardPrefixExclude',
None,
exclude_models,
))
self.assertFalse(use_model(
'WildcardSuffixExcludeModel',
None,
exclude_models,
))
self.assertFalse(use_model(
'MyWildcardBothExcludeModel',
None,
exclude_models,
))
# Test with `exclude_models` and `include_models` combined
# where the user wants to exclude some models through a wildcard
# while still being able to include given models
self.assertTrue(use_model(
'MyWildcardPrefixInclude',
include_models,
exclude_models
))
self.assertFalse(use_model(
'MyInclude',
include_models,
exclude_models
))
def test_no_models_dot_py(self):
data = generate_graph_data(['testapp_with_no_models_file'])
self.assertEqual(len(data['graphs']), 1)
model_name = data['graphs'][0]['models'][0]['name']
self.assertEqual(model_name, 'TeslaCar')
class ShowUrlsTests(TestCase):
"""
Tests for the `show_urls` management command.
"""
def test_color(self):
with force_color_support:
out = StringIO()
call_command('show_urls', stdout=out)
self.output = out.getvalue()
self.assertIn('\x1b', self.output)
def test_no_color(self):
with force_color_support:
out = StringIO()
call_command('show_urls', '--no-color', stdout=out)
self.output = out.getvalue()
self.assertNotIn('\x1b', self.output)
class ListModelInfoTests(TestCase):
"""
Tests for the `list_model_info` management command.
"""
def test_plain(self):
out = StringIO()
call_command('list_model_info', '--model', 'django_extensions.MultipleFieldsAndMethods', stdout=out)
self.output = out.getvalue()
self.assertIn('id', self.output)
self.assertIn('char_field', self.output)
self.assertIn('integer_field', self.output)
self.assertIn('foreign_key_field', self.output)
self.assertIn('has_self_only()', self.output)
self.assertIn('has_one_extra_argument()', self.output)
self.assertIn('has_two_extra_arguments()', self.output)
self.assertIn('has_args_kwargs()', self.output)
self.assertIn('has_defaults()', self.output)
self.assertNotIn('__class__()', self.output)
self.assertNotIn('validate_unique()', self.output)
def test_all(self):
out = StringIO()
call_command('list_model_info', '--model', 'django_extensions.MultipleFieldsAndMethods', '--all', stdout=out)
self.output = out.getvalue()
self.assertIn('id', self.output)
self.assertIn('__class__()', self.output)
self.assertIn('validate_unique()', self.output)
def test_signature(self):
out = StringIO()
call_command('list_model_info', '--model', 'django_extensions.MultipleFieldsAndMethods', '--signature', stdout=out)
self.output = out.getvalue()
self.assertIn('has_self_only(self)', self.output)
self.assertIn('has_one_extra_argument(self, arg_one)', self.output)
self.assertIn('has_two_extra_arguments(self, arg_one, arg_two)', self.output)
self.assertIn('has_args_kwargs(self, *args, **kwargs)', self.output)
self.assertIn("has_defaults(self, one=1, two='Two', true=True, false=False, none=None)", self.output)
def test_db_type(self):
if settings.DATABASES['default']['ENGINE'] == 'django.db.backends.postgresql':
id_type = 'serial'
else:
id_type = 'integer'
out = StringIO()
call_command('list_model_info', '--model', 'django_extensions.MultipleFieldsAndMethods', '--db-type', stdout=out)
self.output = out.getvalue()
self.assertIn('id - %s' % id_type, self.output)
self.assertIn('char_field - varchar(10)', self.output)
self.assertIn('integer_field - integer', self.output)
self.assertIn('foreign_key_field - integer', self.output)
def test_field_class(self):
out = StringIO()
call_command('list_model_info', '--model', 'django_extensions.MultipleFieldsAndMethods', '--field-class', stdout=out)
self.output = out.getvalue()
self.assertIn('id - AutoField', self.output)
self.assertIn('char_field - CharField', self.output)
self.assertIn('integer_field - IntegerField', self.output)
self.assertIn('foreign_key_field - ForeignKey', self.output)
class MergeModelInstancesTests(TestCase):
"""
Tests for the `merge_model_instances` management command.
"""
@mock.patch('django_extensions.management.commands.merge_model_instances.apps.get_models')
@mock.patch('django_extensions.management.commands.merge_model_instances.input')
def test_get_model_to_merge(self, test_input, get_models):
class Model:
__name__ = ""
return_value = []
for v in ["one", "two", "three"]:
instance = Model()
instance.__name__ = v
return_value.append(instance)
get_models.return_value = return_value
test_input.return_value = 2
model_to_deduplicate = get_model_to_deduplicate()
self.assertEqual(model_to_deduplicate.__name__, "two")
@mock.patch('django_extensions.management.commands.merge_model_instances.input')
def test_get_field_names(self, test_input):
class Field:
name = ""
def __init__(self, name):
self.name = name
class Model:
__name__ = ""
one = Field(name="one")
two = Field(name="two")
three = Field(name="three")
return_value = [Model().__getattribute__(field) for field in dir(Model()) if not field.startswith("__")]
Model._meta = mock.MagicMock()
Model._meta.get_fields = mock.MagicMock(return_value=return_value)
# Choose the second return_value
test_input.side_effect = [2, "C"]
field_names = get_field_names(Model())
# Test that the second return_value returned
self.assertEqual(field_names, [return_value[1].name])
@mock.patch('django_extensions.management.commands.merge_model_instances.input')
def test_keep_first_or_last_instance(self, test_input):
test_input.side_effect = ["xxxx", "first", "last"]
first_or_last = keep_first_or_last_instance()
self.assertEqual(first_or_last, "first")
first_or_last = keep_first_or_last_instance()
self.assertEqual(first_or_last, "last")
@mock.patch('django_extensions.management.commands.merge_model_instances.get_model_to_deduplicate')
@mock.patch('django_extensions.management.commands.merge_model_instances.get_field_names')
@mock.patch('django_extensions.management.commands.merge_model_instances.keep_first_or_last_instance')
def test_merge_model_instances(self, keep_first_or_last_instance, get_field_names, get_model_to_deduplicate):
get_model_to_deduplicate.return_value = Person
get_field_names.return_value = ["name"]
keep_first_or_last_instance.return_value = "first"
name = Name.objects.create(name="Name")
note = Note.objects.create(note="This is a note.")
personality_1 = Personality.objects.create(description="Child 1's personality.")
personality_2 = Personality.objects.create(description="Child 2's personality.")
child_1 = Person.objects.create(
name=Name.objects.create(name="Child1"),
age=10,
personality=personality_1,
)
child_1.notes.add(note)
child_2 = Person.objects.create(
name=Name.objects.create(name="Child2"),
age=10,
personality=personality_2,
)
child_2.notes.add(note)
club1 = Club.objects.create(name="Club one")
club2 = Club.objects.create(name="Club two")
person_1 = Person.objects.create(
name=name,
age=50,
personality=Personality.objects.create(description="First personality"),
)
person_1.children.add(child_1)
person_1.notes.add(note)
Permission.objects.create(text="Permission", person=person_1)
person_2 = Person.objects.create(
name=name,
age=50,
personality=Personality.objects.create(description="Second personality"),
)
person_2.children.add(child_2)
new_note = Note.objects.create(note="This is a new note")
person_2.notes.add(new_note)
Membership.objects.create(club=club1, person=person_2)
Membership.objects.create(club=club1, person=person_2)
Permission.objects.create(text="Permission", person=person_2)
person_3 = Person.objects.create(
name=name,
age=50,
personality=Personality.objects.create(description="Third personality"),
)
person_3.children.add(child_2)
person_3.notes.add(new_note)
Membership.objects.create(club=club2, person=person_3)
Membership.objects.create(club=club2, person=person_3)
Permission.objects.create(text="Permission", person=person_3)
self.assertEqual(Person.objects.count(), 5)
self.assertEqual(Membership.objects.count(), 4)
out = StringIO()
call_command('merge_model_instances', stdout=out)
self.ouptput = out.getvalue()
self.assertEqual(Person.objects.count(), 3)
person = Person.objects.get(name__name="Name")
self.assertRaises(
Person.DoesNotExist,
lambda: Person.objects.get(personality__description="Second personality"),
)
self.assertEqual(person.notes.count(), 2)
self.assertEqual(person.clubs.distinct().count(), 2)
self.assertEqual(person.permission_set.count(), 3)
self.assertRaises(
Personality.DoesNotExist,
lambda: Personality.objects.get(description="Second personality"),
)
class RunJobsTests(TestCase):
"""
Tests for the `runjobs` management command.
"""
@mock.patch('django_extensions.management.commands.runjobs.Command.runjobs_by_signals')
@mock.patch('django_extensions.management.commands.runjobs.Command.runjobs')
@mock.patch('django_extensions.management.commands.runjobs.Command.usage_msg')
def test_runjobs_management_command(
self, usage_msg, runjobs, runjobs_by_signals):
when = 'daily'
call_command('runjobs', when)
usage_msg.assert_not_called()
runjobs.assert_called_once()
runjobs_by_signals.assert_called_once()
self.assertEqual(runjobs.call_args[0][0], when)
@mock.patch('django_extensions.management.commands.runjobs.Command.runjobs_by_signals')
@mock.patch('django_extensions.management.commands.runjobs.Command.runjobs')
@mock.patch('django_extensions.management.commands.runjobs.Command.usage_msg')
def test_runjobs_management_command_invalid_when(
self, usage_msg, runjobs, runjobs_by_signals):
when = 'invalid'
call_command('runjobs', when)
usage_msg.assert_called_once_with()
runjobs.assert_not_called()
runjobs_by_signals.assert_not_called()
def test_runjobs_integration_test(self):
jobs = [
("hourly", HOURLY_JOB_MOCK),
("daily", DAILY_JOB_MOCK),
("monthly", MONTHLY_JOB_MOCK),
("weekly", WEEKLY_JOB_MOCK),
("yearly", YEARLY_JOB_MOCK),
]
# Reset all mocks in case they have been called elsewhere.
for job in jobs:
job[1].reset_mock()
counter = 1
for job in jobs:
call_command('runjobs', job[0], verbosity=2)
for already_called in jobs[:counter]:
already_called[1].assert_called_once_with()
for not_yet_called in jobs[counter:]:
not_yet_called[1].assert_not_called()
counter += 1
def test_runjob_integration_test(self):
jobs = [
("test_hourly_job", HOURLY_JOB_MOCK),
("test_daily_job", DAILY_JOB_MOCK),
("test_monthly_job", MONTHLY_JOB_MOCK),
("test_weekly_job", WEEKLY_JOB_MOCK),
("test_yearly_job", YEARLY_JOB_MOCK),
]
# Reset all mocks in case they have been called elsewhere.
for job in jobs:
job[1].reset_mock()
counter = 1
for job in jobs:
call_command('runjob', job[0], verbosity=2)
for already_called in jobs[:counter]:
already_called[1].assert_called_once_with()
for not_yet_called in jobs[counter:]:
not_yet_called[1].assert_not_called()
counter += 1