예제 #1
0
파일: tests.py 프로젝트: randhalch/django
    def test_own_alias_dependency(self):
        raw = [("s1", ("s1_db", ["alpha", "bravo"]))]
        dependencies = {"alpha": ["bravo"]}

        with self.assertRaises(ImproperlyConfigured):
            dependency_ordered(raw, dependencies=dependencies)

        # reordering aliases shouldn't matter
        raw = [("s1", ("s1_db", ["bravo", "alpha"]))]

        with self.assertRaises(ImproperlyConfigured):
            dependency_ordered(raw, dependencies=dependencies)
예제 #2
0
    def test_circular_dependencies(self):
        raw = [
            ('s1', ('s1_db', ['alpha'])),
            ('s2', ('s2_db', ['bravo'])),
        ]
        dependencies = {
            'bravo': ['alpha'],
            'alpha': ['bravo'],
        }

        with self.assertRaises(ImproperlyConfigured):
            dependency_ordered(raw, dependencies=dependencies)
예제 #3
0
파일: tests.py 프로젝트: 01-/django
    def test_circular_dependencies(self):
        raw = [
            ('s1', ('s1_db', ['alpha'])),
            ('s2', ('s2_db', ['bravo'])),
        ]
        dependencies = {
            'bravo': ['alpha'],
            'alpha': ['bravo'],
        }

        with self.assertRaises(ImproperlyConfigured):
            dependency_ordered(raw, dependencies=dependencies)
예제 #4
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    def test_own_alias_dependency(self):
        raw = [('s1', ('s1_db', ['alpha', 'bravo']))]
        dependencies = {'alpha': ['bravo']}

        with self.assertRaises(ImproperlyConfigured):
            runner.dependency_ordered(raw, dependencies=dependencies)

        # reordering aliases shouldn't matter
        raw = [('s1', ('s1_db', ['bravo', 'alpha']))]

        with self.assertRaises(ImproperlyConfigured):
            runner.dependency_ordered(raw, dependencies=dependencies)
예제 #5
0
파일: tests.py 프로젝트: randhalch/django
    def test_multiple_dependencies(self):
        raw = [
            ("s1", ("s1_db", ["alpha"])),
            ("s2", ("s2_db", ["bravo"])),
            ("s3", ("s3_db", ["charlie"])),
            ("s4", ("s4_db", ["delta"])),
        ]
        dependencies = {"alpha": ["bravo", "delta"], "bravo": ["charlie"], "delta": ["charlie"]}

        ordered = dependency_ordered(raw, dependencies=dependencies)
        ordered_sigs = [sig for sig, aliases in ordered]

        self.assertIn("s1", ordered_sigs)
        self.assertIn("s2", ordered_sigs)
        self.assertIn("s3", ordered_sigs)
        self.assertIn("s4", ordered_sigs)

        # Explicit dependencies
        self.assertLess(ordered_sigs.index("s2"), ordered_sigs.index("s1"))
        self.assertLess(ordered_sigs.index("s4"), ordered_sigs.index("s1"))
        self.assertLess(ordered_sigs.index("s3"), ordered_sigs.index("s2"))
        self.assertLess(ordered_sigs.index("s3"), ordered_sigs.index("s4"))

        # Implicit dependencies
        self.assertLess(ordered_sigs.index("s3"), ordered_sigs.index("s1"))
예제 #6
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    def test_multiple_dependencies(self):
        raw = [
            ('s1', ('s1_db', ['alpha'])),
            ('s2', ('s2_db', ['bravo'])),
            ('s3', ('s3_db', ['charlie'])),
            ('s4', ('s4_db', ['delta'])),
        ]
        dependencies = {
            'alpha': ['bravo', 'delta'],
            'bravo': ['charlie'],
            'delta': ['charlie'],
        }

        ordered = dependency_ordered(raw, dependencies=dependencies)
        ordered_sigs = [sig for sig, aliases in ordered]

        self.assertIn('s1', ordered_sigs)
        self.assertIn('s2', ordered_sigs)
        self.assertIn('s3', ordered_sigs)
        self.assertIn('s4', ordered_sigs)

        # Explicit dependencies
        self.assertLess(ordered_sigs.index('s2'), ordered_sigs.index('s1'))
        self.assertLess(ordered_sigs.index('s4'), ordered_sigs.index('s1'))
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s2'))
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s4'))

        # Implicit dependencies
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s1'))
예제 #7
0
파일: tests.py 프로젝트: ATNC/django
    def test_multiple_dependencies(self):
        raw = [
            ('s1', ('s1_db', ['alpha'])),
            ('s2', ('s2_db', ['bravo'])),
            ('s3', ('s3_db', ['charlie'])),
            ('s4', ('s4_db', ['delta'])),
        ]
        dependencies = {
            'alpha': ['bravo', 'delta'],
            'bravo': ['charlie'],
            'delta': ['charlie'],
        }

        ordered = dependency_ordered(raw, dependencies=dependencies)
        ordered_sigs = [sig for sig, aliases in ordered]

        self.assertIn('s1', ordered_sigs)
        self.assertIn('s2', ordered_sigs)
        self.assertIn('s3', ordered_sigs)
        self.assertIn('s4', ordered_sigs)

        # Explicit dependencies
        self.assertLess(ordered_sigs.index('s2'), ordered_sigs.index('s1'))
        self.assertLess(ordered_sigs.index('s4'), ordered_sigs.index('s1'))
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s2'))
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s4'))

        # Implicit dependencies
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s1'))
예제 #8
0
    def setup_databases(self, **kwargs):
        from django.db import connections, DEFAULT_DB_ALIAS

        # First pass -- work out which databases actually need to be created,
        # and which ones are test mirrors or duplicate entries in DATABASES
        mirrored_aliases = {}
        test_databases = {}
        dependencies = {}
        for alias in connections:
            connection = connections[alias]
            if connection.settings_dict['TEST_MIRROR']:
                # If the database is marked as a test mirror, save
                # the alias.
                mirrored_aliases[alias] = connection.settings_dict['TEST_MIRROR']
            else:
                # Store a tuple with DB parameters that uniquely identify it.
                # If we have two aliases with the same values for that tuple,
                # we only need to create the test database once.
                item = test_databases.setdefault(
                    connection.creation.test_db_signature(),
                    (connection.settings_dict['NAME'], [])
                )
                item[1].append(alias)

                if 'TEST_DEPENDENCIES' in connection.settings_dict:
                    dependencies[alias] = connection.settings_dict['TEST_DEPENDENCIES']
                else:
                    if alias != DEFAULT_DB_ALIAS:
                        dependencies[alias] = connection.settings_dict.get('TEST_DEPENDENCIES', [DEFAULT_DB_ALIAS])

        # Second pass -- actually create the databases.
        old_names = []
        mirrors = []
        for signature, (db_name, aliases) in dependency_ordered(test_databases.items(), dependencies):
            # Actually create the database for the first connection
            connection = connections[aliases[0]]
            if connection.settings_dict.get("USE_LIVE_FOR_TESTS"):
                continue

            old_names.append((connection, db_name, True))

            test_db_name = connection.creation.create_test_db(self.verbosity, autoclobber=not self.interactive)
            for alias in aliases[1:]:
                connection = connections[alias]
                if db_name:
                    old_names.append((connection, db_name, False))
                    connection.settings_dict['NAME'] = test_db_name
                else:
                    # If settings_dict['NAME'] isn't defined, we have a backend where
                    # the name isn't important -- e.g., SQLite, which uses :memory:.
                    # Force create the database instead of assuming it's a duplicate.
                    old_names.append((connection, db_name, True))
                    connection.creation.create_test_db(self.verbosity, autoclobber=not self.interactive)

        for alias, mirror_alias in mirrored_aliases.items():
            mirrors.append((alias, connections[alias].settings_dict['NAME']))
            connections[alias].settings_dict['NAME'] = connections[mirror_alias].settings_dict['NAME']

        return old_names, mirrors
예제 #9
0
파일: tests.py 프로젝트: ATNC/django
    def test_own_alias_dependency(self):
        raw = [
            ('s1', ('s1_db', ['alpha', 'bravo']))
        ]
        dependencies = {
            'alpha': ['bravo']
        }

        with self.assertRaises(ImproperlyConfigured):
            dependency_ordered(raw, dependencies=dependencies)

        # reordering aliases shouldn't matter
        raw = [
            ('s1', ('s1_db', ['bravo', 'alpha']))
        ]

        with self.assertRaises(ImproperlyConfigured):
            dependency_ordered(raw, dependencies=dependencies)
    def setup_databases2(self, test_db_name2):
        from django.db import connections, DEFAULT_DB_ALIAS

        # First pass -- work out which databases actually need to be created,
        # and which ones are test mirrors or duplicate entries in DATABASES
        mirrored_aliases = {}
        test_databases = {}
        dependencies = {}
        default_sig = connections[DEFAULT_DB_ALIAS].creation.test_db_signature()
        for alias in connections:
            connection = connections[alias]
            if connection.settings_dict['TEST_MIRROR']:
                # If the database is marked as a test mirror, save
                # the alias.
                mirrored_aliases[alias] = (
                    connection.settings_dict['TEST_MIRROR'])
            else:
                # Store a tuple with DB parameters that uniquely identify it.
                # If we have two aliases with the same values for that tuple,
                # we only need to create the test database once.
                item = test_databases.setdefault(
                    connection.creation.test_db_signature(),
                    (connection.settings_dict['NAME'], set())
                )
                item[1].add(alias)

                if 'TEST_DEPENDENCIES' in connection.settings_dict:
                    dependencies[alias] = (
                        connection.settings_dict['TEST_DEPENDENCIES'])
                else:
                    if alias != DEFAULT_DB_ALIAS and connection.creation.test_db_signature() != default_sig:
                        dependencies[alias] = connection.settings_dict.get(
                            'TEST_DEPENDENCIES', [DEFAULT_DB_ALIAS])

        # Second pass -- actually create the databases.
        old_names = []
        mirrors = []

        for signature, (db_name, aliases) in dependency_ordered(test_databases.items(), dependencies):
            test_db_name = test_db_name2
            # Actually create the database for the first connection
            for alias in aliases:
                connection = connections[alias]
                connection.settings_dict['NAME'] = test_db_name
                destroy = False
                old_names.append((connection, db_name, destroy))

        for alias, mirror_alias in mirrored_aliases.items():
            mirrors.append((alias, connections[alias].settings_dict['NAME']))
            connections[alias].settings_dict['NAME'] = (
                connections[mirror_alias].settings_dict['NAME'])

        return old_names, mirrors
예제 #11
0
파일: tests.py 프로젝트: randhalch/django
    def test_simple_dependencies(self):
        raw = [("s1", ("s1_db", ["alpha"])), ("s2", ("s2_db", ["bravo"])), ("s3", ("s3_db", ["charlie"]))]
        dependencies = {"alpha": ["charlie"], "bravo": ["charlie"]}

        ordered = dependency_ordered(raw, dependencies=dependencies)
        ordered_sigs = [sig for sig, value in ordered]

        self.assertIn("s1", ordered_sigs)
        self.assertIn("s2", ordered_sigs)
        self.assertIn("s3", ordered_sigs)
        self.assertLess(ordered_sigs.index("s3"), ordered_sigs.index("s1"))
        self.assertLess(ordered_sigs.index("s3"), ordered_sigs.index("s2"))
예제 #12
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    def test_simple_dependencies(self):
        raw = [
            ('s1', ('s1_db', ['alpha'])),
            ('s2', ('s2_db', ['bravo'])),
            ('s3', ('s3_db', ['charlie'])),
        ]
        dependencies = {
            'alpha': ['charlie'],
            'bravo': ['charlie'],
        }

        ordered = dependency_ordered(raw, dependencies=dependencies)
        ordered_sigs = [sig for sig, value in ordered]

        self.assertIn('s1', ordered_sigs)
        self.assertIn('s2', ordered_sigs)
        self.assertIn('s3', ordered_sigs)
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s1'))
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s2'))
예제 #13
0
파일: tests.py 프로젝트: ATNC/django
    def test_simple_dependencies(self):
        raw = [
            ('s1', ('s1_db', ['alpha'])),
            ('s2', ('s2_db', ['bravo'])),
            ('s3', ('s3_db', ['charlie'])),
        ]
        dependencies = {
            'alpha': ['charlie'],
            'bravo': ['charlie'],
        }

        ordered = dependency_ordered(raw, dependencies=dependencies)
        ordered_sigs = [sig for sig, value in ordered]

        self.assertIn('s1', ordered_sigs)
        self.assertIn('s2', ordered_sigs)
        self.assertIn('s3', ordered_sigs)
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s1'))
        self.assertLess(ordered_sigs.index('s3'), ordered_sigs.index('s2'))
예제 #14
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def setup_databases(verbosity, interactive, **kwargs):
    """Taken from django.test.runner and modified so it uses our own database setup"""
    from django.db import connections, DEFAULT_DB_ALIAS

    # First pass -- work out which databases actually need to be created,
    # and which ones are test mirrors or duplicate entries in DATABASES
    mirrored_aliases = {}
    test_databases = {}
    dependencies = {}
    default_sig = connections[DEFAULT_DB_ALIAS].creation.test_db_signature()
    for alias in connections:
        connection = connections[alias]
        if connection.settings_dict['TEST_MIRROR']:
            # If the database is marked as a test mirror, save
            # the alias.
            mirrored_aliases[alias] = (connection.settings_dict['TEST_MIRROR'])
        else:
            # Store a tuple with DB parameters that uniquely identify it.
            # If we have two aliases with the same values for that tuple,
            # we only need to create the test database once.
            item = test_databases.setdefault(
                connection.creation.test_db_signature(),
                (connection.settings_dict['NAME'], set()))
            item[1].add(alias)

            if 'TEST_DEPENDENCIES' in connection.settings_dict:
                dependencies[alias] = (
                    connection.settings_dict['TEST_DEPENDENCIES'])
            else:
                if alias != DEFAULT_DB_ALIAS and connection.creation.test_db_signature(
                ) != default_sig:
                    dependencies[alias] = connection.settings_dict.get(
                        'TEST_DEPENDENCIES', [DEFAULT_DB_ALIAS])

    # Second pass -- actually create the databases.
    old_names = []
    mirrors = []

    for signature, (db_name,
                    aliases) in dependency_ordered(test_databases.items(),
                                                   dependencies):
        test_db_name = None
        # Actually create the database for the first connection
        for alias in aliases:
            connection = connections[alias]
            print connection
            if test_db_name is None:
                # Changed just this line from the default django function so that it runs our own setup commands
                test_db_name = setup_db(connection)
                destroy = True
            else:
                connection.settings_dict['NAME'] = test_db_name
                destroy = False
            old_names.append((connection, db_name, destroy))

    for alias, mirror_alias in mirrored_aliases.items():
        mirrors.append((alias, connections[alias].settings_dict['NAME']))
        connections[alias].settings_dict['NAME'] = (
            connections[mirror_alias].settings_dict['NAME'])

    return old_names, mirrors
예제 #15
0
def hijack_setup_databases(verbosity, interactive, **kwargs):
    from django.db import connections, DEFAULT_DB_ALIAS

    # First pass -- work out which databases actually need to be created,
    # and which ones are test mirrors or duplicate entries in DATABASES
    mirrored_aliases = {}
    test_databases = {}
    dependencies = {}
    default_sig = connections[DEFAULT_DB_ALIAS].creation.test_db_signature()
    for alias in connections:
        connection = connections[alias]
        test_settings = connection.settings_dict['TEST']
        if test_settings['MIRROR']:
            # If the database is marked as a test mirror, save
            # the alias.
            mirrored_aliases[alias] = test_settings['MIRROR']
        else:
            # Store a tuple with DB parameters that uniquely identify it.
            # If we have two aliases with the same values for that tuple,
            # we only need to create the test database once.
            item = test_databases.setdefault(
                connection.creation.test_db_signature(),
                (connection.settings_dict['NAME'], set())
            )
            item[1].add(alias)

            if 'DEPENDENCIES' in test_settings:
                dependencies[alias] = test_settings['DEPENDENCIES']
            else:
                if alias != DEFAULT_DB_ALIAS and connection.creation.test_db_signature() != default_sig:
                    dependencies[alias] = test_settings.get('DEPENDENCIES', [DEFAULT_DB_ALIAS])

    # Second pass -- actually create the databases.
    old_names = []
    mirrors = []

    for signature, (db_name, aliases) in dependency_ordered(
            test_databases.items(), dependencies):
        test_db_name = None
        # Actually create the database for the first connection
        for alias in aliases:
            connection = connections[alias]
            if test_db_name is None:

                # TODO: ALL I WANT TO HIJACK IS THIS SO I CAN
                # TODO: ... SKIP SLOW call_command('migrations', ...)
                # TODO: ... replacing it with my faster version if on 2nd run

                c_self = connection.creation
                # test_db_name = connection.creation.create_test_db(
                test_database_name = c_self._create_test_db(
                    verbosity,
                    autoclobber=not interactive,
                    # TODO: This probably means I don't need other TODOs for TransactionTestCase...
                    # serialize=connection.settings_dict.get("TEST", {}).get("SERIALIZE", True),
                )
                c_self.connection.close()
                settings.DATABASES[c_self.connection.alias]["NAME"] = test_database_name
                c_self.connection.settings_dict["NAME"] = test_database_name
                destroy = True
            else:
                connection.settings_dict['NAME'] = test_db_name
                destroy = False
            old_names.append((connection, db_name, destroy))

    for alias, mirror_alias in mirrored_aliases.items():
        mirrors.append((alias, connections[alias].settings_dict['NAME']))
        connections[alias].settings_dict['NAME'] = (
            connections[mirror_alias].settings_dict['NAME'])

    return old_names, mirrors
예제 #16
0
    def setup_databases(self, **kwargs):
        from django.db import connections, DEFAULT_DB_ALIAS
        verbosity = self.verbosity
        interactive = self.interactive

        script_path = os.path.dirname(os.path.realpath(__file__))
        db_path = os.path.realpath(os.path.join(script_path,"..","..",
                               "sqlite-databases", "bibles.sqlite3.db" ))
        self.test_db_path = os.path.realpath(os.path.join(script_path,"..","..",
                               "sqlite-databases", "test-bibles.sqlite3.db" ))

        # copying the file over can take quite a while so
        # don't copy it over if this already exists.
        # Not the most wonderful way of testing but a reasonable
        # compromise I think.
        if settings.REGENERATE_TEST_DATABASE or not os.path.exists(self.test_db_path):
            shutil.copyfile(db_path, self.test_db_path)
        

        # First pass -- work out which databases actually need to be created,
        # and which ones are test mirrors or duplicate entries in DATABASES
        mirrored_aliases = {}
        test_databases = {}
        dependencies = {}

        default_sig = connections[DEFAULT_DB_ALIAS].creation.test_db_signature()
        for alias in connections:
            connection = connections[alias]
            test_settings = connection.settings_dict['TEST']
            if test_settings['MIRROR']:
                # If the database is marked as a test mirror, save
                # the alias.b 
                mirrored_aliases[alias] = test_settings['MIRROR']
            else:
                # Store a tuple with DB parameters that uniquely identify it.
                # If we have two aliases with the same values for that tuple,
                # we only need to create the test database once.
                item = test_databases.setdefault(
                    connection.creation.test_db_signature(),
                    (connection.settings_dict['NAME'], set())
                )
                item[1].add(alias)

                if 'DEPENDENCIES' in test_settings:
                    dependencies[alias] = test_settings['DEPENDENCIES']
                else:
                    if alias != DEFAULT_DB_ALIAS and connection.creation.test_db_signature() != default_sig:
                        dependencies[alias] = test_settings.get('DEPENDENCIES', [DEFAULT_DB_ALIAS])

        # Second pass -- actually create the databases.
        old_names = []
        mirrors = []

        for signature, (db_name, aliases) in dependency_ordered(
                test_databases.items(), dependencies):
            test_db_name = None

            # Actually create the database for the first connection
            for alias in aliases:
                print alias
                connection = connections[alias]
                if test_db_name is None:
                    if 'CLOBBER_TEST_DB' not in connection.settings_dict or \
                    connection.settings_dict['CLOBBER_TEST_DB'] == True:
                        test_db_name = connection.creation.create_test_db(
                            verbosity,
                            autoclobber=not interactive,
                            serialize=connection.settings_dict.get("TEST_SERIALIZE", True),
                        )
                        destroy = True
                    else:
                        connection.settings_dict['NAME'] = \
                            connection.settings_dict['TEST']['NAME']
                        destroy = False
                else:
                    connection.settings_dict['NAME'] = test_db_name
                    destroy = False
                old_names.append((connection, db_name, destroy))

        for alias, mirror_alias in mirrored_aliases.items():
            mirrors.append((alias, connections[alias].settings_dict['NAME']))
            connections[alias].settings_dict['NAME'] = (
                connections[mirror_alias].settings_dict['NAME'])

        return old_names, mirrors
예제 #17
0
    def setup_databases(self, **kwargs):
        verbosity, interactive = self.verbosity, self.interactive
        from django.db import connections, DEFAULT_DB_ALIAS

        mirrored_aliases = {}
        test_databases = {}
        dependencies = {}
        default_sig = connections[
            DEFAULT_DB_ALIAS].creation.test_db_signature()
        for alias in connections:
            connection = connections[alias]

            test_settings = connection.settings_dict['TEST']
            if test_settings['MIRROR']:
                mirrored_aliases[alias] = test_settings['MIRROR']
            else:
                item = test_databases.setdefault(
                    connection.creation.test_db_signature(),
                    (connection.settings_dict['NAME'], set())
                )
                item[1].add(alias)

                if 'DEPENDENCIES' in test_settings:
                    dependencies[alias] = test_settings['DEPENDENCIES']
                else:
                    if alias != DEFAULT_DB_ALIAS and connection\
                            .creation.test_db_signature() != default_sig:
                        dependencies[alias] = test_settings.get(
                            'DEPENDENCIES', [DEFAULT_DB_ALIAS])

        # Second pass -- actually create the databases.
        old_names = []
        mirrors = []

        for signature, (db_name, aliases) in dependency_ordered(
                test_databases.items(), dependencies):
            test_db_name = None
            # Actually create the database for the first connection
            for alias in aliases:
                connection = connections[alias]
                if test_db_name is None:
                    try:
                        test_db_name = connection.creation.create_test_db(
                            verbosity,
                            autoclobber=not interactive,
                            serialize=connection.settings_dict.get(
                                "TEST", {}).get("SERIALIZE", True),
                        )
                    except Exception:
                        pass
                    destroy = True
                else:
                    connection.settings_dict['NAME'] = test_db_name
                    destroy = False
                load_sql(connection=connection)
                old_names.append((connection, db_name, destroy))

        for alias, mirror_alias in mirrored_aliases.items():
            mirrors.append((alias, connections[alias].settings_dict['NAME']))
            connections[alias].settings_dict['NAME'] = (
                connections[mirror_alias].settings_dict['NAME'])

        return old_names, mirrors
예제 #18
0
def setup_databases(verbosity, interactive, **kwargs):
    """
    modified version of the same function located in 
    site-packages/django/test/runner.py.
    this version will not add a database connection
    to 'test_databases' for creation if it finds
    the ENGINE setting for postgis
    """
    from django.db import connections, DEFAULT_DB_ALIAS

    # First pass -- work out which databases actually need to be created,
    # and which ones are test mirrors or duplicate entries in DATABASES
    mirrored_aliases = {}
    test_databases = {}
    dependencies = {}
    default_sig = connections[DEFAULT_DB_ALIAS].creation.test_db_signature()
    for alias in connections:
        connection = connections[alias]
        #
        #  DIFF
        #
        if connection.settings_dict[
                'ENGINE'] == 'django.contrib.gis.db.backends.postgis':
            continue
        #
        #  END DIFF
        #
        if connection.settings_dict['TEST_MIRROR']:
            # If the database is marked as a test mirror, save
            # the alias.
            mirrored_aliases[alias] = (connection.settings_dict['TEST_MIRROR'])
        else:
            # Store a tuple with DB parameters that uniquely identify it.
            # If we have two aliases with the same values for that tuple,
            # we only need to create the test database once.
            item = test_databases.setdefault(
                connection.creation.test_db_signature(),
                (connection.settings_dict['NAME'], set()))
            item[1].add(alias)

            if 'TEST_DEPENDENCIES' in connection.settings_dict:
                dependencies[alias] = (
                    connection.settings_dict['TEST_DEPENDENCIES'])
            else:
                if alias != DEFAULT_DB_ALIAS and connection.creation.test_db_signature(
                ) != default_sig:
                    dependencies[alias] = connection.settings_dict.get(
                        'TEST_DEPENDENCIES', [DEFAULT_DB_ALIAS])

    # Second pass -- actually create the databases.
    old_names = []
    mirrors = []

    for signature, (db_name,
                    aliases) in dependency_ordered(test_databases.items(),
                                                   dependencies):
        test_db_name = None
        # Actually create the database for the first connection
        for alias in aliases:
            connection = connections[alias]
            if test_db_name is None:
                test_db_name = connection.creation.create_test_db(
                    verbosity, autoclobber=not interactive)
                destroy = True
            else:
                connection.settings_dict['NAME'] = test_db_name
                destroy = False
            old_names.append((connection, db_name, destroy))

    for alias, mirror_alias in mirrored_aliases.items():
        mirrors.append((alias, connections[alias].settings_dict['NAME']))
        connections[alias].settings_dict['NAME'] = (
            connections[mirror_alias].settings_dict['NAME'])

    return old_names, mirrors
    def setup_databases(self, **kwargs):
        from django.db import connections, DEFAULT_DB_ALIAS

        # First pass -- work out which databases actually need to be created,
        # and which ones are test mirrors or duplicate entries in DATABASES
        mirrored_aliases = {}
        test_databases = {}
        dependencies = {}
        default_sig = connections[DEFAULT_DB_ALIAS].creation.test_db_signature()
        for alias in connections:
            connection = connections[alias]
            test_settings = connection.settings_dict['TEST']
            if test_settings['MIRROR']:
                # If the database is marked as a test mirror, save
                # the alias.
                mirrored_aliases[alias] = test_settings['MIRROR']
            else:
                # Store a tuple with DB parameters that uniquely identify it.
                # If we have two aliases with the same values for that tuple,
                # we only need to create the test database once.
                item = test_databases.setdefault(
                    connection.creation.test_db_signature(),
                    (connection.settings_dict['NAME'], set())
                )
                item[1].add(alias)

                if 'DEPENDENCIES' in test_settings:
                    dependencies[alias] = test_settings['DEPENDENCIES']
                else:
                    if alias != DEFAULT_DB_ALIAS and connection.creation.test_db_signature() != default_sig:
                        dependencies[alias] = test_settings.get('DEPENDENCIES', [DEFAULT_DB_ALIAS])

        # Second pass -- actually create the databases.
        old_names = []
        mirrors = []

        for signature, (db_name, aliases) in dependency_ordered(
                test_databases.items(), dependencies):
            test_db_name = None

            # Actually create the database for the first connection
            for alias in aliases:
                connection = connections[alias]
                if connection.settings_dict.get("USE_LIVE_FOR_TESTS"):
                    continue

                if test_db_name is None:
                    test_db_name = connection.creation.create_test_db(
                        self.verbosity,
                        autoclobber=not self.interactive,
                        serialize=connection.settings_dict.get("TEST_SERIALIZE", True),
                    )
                    destroy = True
                else:
                    connection.settings_dict['NAME'] = test_db_name
                    destroy = False
                old_names.append((connection, db_name, destroy))

        for alias, mirror_alias in mirrored_aliases.items():
            mirrors.append((alias, connections[alias].settings_dict['NAME']))
            connections[alias].settings_dict['NAME'] = (
                connections[mirror_alias].settings_dict['NAME'])

        return old_names, mirrors