111 lines
4.4 KiB
Python
111 lines
4.4 KiB
Python
import sys, time
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from django.conf import settings
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from django.db import connection, transaction, backend
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from django.core import management
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from django.dispatch import dispatcher
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from django.test import signals
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from django.template import Template
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# The prefix to put on the default database name when creating
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# the test database.
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TEST_DATABASE_PREFIX = 'test_'
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def instrumented_test_render(self, context):
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"""An instrumented Template render method, providing a signal
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that can be intercepted by the test system Client
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"""
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dispatcher.send(signal=signals.template_rendered, sender=self, template=self, context=context)
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return self.nodelist.render(context)
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def setup_test_environment():
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"""Perform any global pre-test setup. This involves:
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- Installing the instrumented test renderer
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"""
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Template.original_render = Template.render
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Template.render = instrumented_test_render
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def teardown_test_environment():
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"""Perform any global post-test teardown. This involves:
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- Restoring the original test renderer
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"""
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Template.render = Template.original_render
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del Template.original_render
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def _set_autocommit(connection):
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"Make sure a connection is in autocommit mode."
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if hasattr(connection.connection, "autocommit"):
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connection.connection.autocommit(True)
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elif hasattr(connection.connection, "set_isolation_level"):
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connection.connection.set_isolation_level(0)
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def create_test_db(verbosity=1, autoclobber=False):
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if verbosity >= 1:
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print "Creating test database..."
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# If we're using SQLite, it's more convenient to test against an
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# in-memory database.
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if settings.DATABASE_ENGINE == "sqlite3":
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TEST_DATABASE_NAME = ":memory:"
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else:
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if settings.TEST_DATABASE_NAME:
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TEST_DATABASE_NAME = settings.TEST_DATABASE_NAME
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else:
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TEST_DATABASE_NAME = TEST_DATABASE_PREFIX + settings.DATABASE_NAME
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# Create the test database and connect to it. We need to autocommit
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# if the database supports it because PostgreSQL doesn't allow
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# CREATE/DROP DATABASE statements within transactions.
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cursor = connection.cursor()
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_set_autocommit(connection)
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try:
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cursor.execute("CREATE DATABASE %s" % backend.quote_name(TEST_DATABASE_NAME))
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except Exception, e:
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sys.stderr.write("Got an error creating the test database: %s\n" % e)
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if not autoclobber:
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confirm = raw_input("It appears the test database, %s, already exists. Type 'yes' to delete it, or 'no' to cancel: " % TEST_DATABASE_NAME)
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if autoclobber or confirm == 'yes':
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try:
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if verbosity >= 1:
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print "Destroying old test database..."
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cursor.execute("DROP DATABASE %s" % backend.quote_name(TEST_DATABASE_NAME))
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if verbosity >= 1:
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print "Creating test database..."
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cursor.execute("CREATE DATABASE %s" % backend.quote_name(TEST_DATABASE_NAME))
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except Exception, e:
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sys.stderr.write("Got an error recreating the test database: %s\n" % e)
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sys.exit(2)
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else:
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print "Tests cancelled."
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sys.exit(1)
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connection.close()
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settings.DATABASE_NAME = TEST_DATABASE_NAME
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management.syncdb(verbosity, interactive=False)
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# Get a cursor (even though we don't need one yet). This has
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# the side effect of initializing the test database.
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cursor = connection.cursor()
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def destroy_test_db(old_database_name, verbosity=1):
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# Unless we're using SQLite, remove the test database to clean up after
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# ourselves. Connect to the previous database (not the test database)
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# to do so, because it's not allowed to delete a database while being
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# connected to it.
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if verbosity >= 1:
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print "Destroying test database..."
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connection.close()
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TEST_DATABASE_NAME = settings.DATABASE_NAME
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settings.DATABASE_NAME = old_database_name
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if settings.DATABASE_ENGINE != "sqlite3":
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cursor = connection.cursor()
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_set_autocommit(connection)
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time.sleep(1) # To avoid "database is being accessed by other users" errors.
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cursor.execute("DROP DATABASE %s" % backend.quote_name(TEST_DATABASE_NAME))
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connection.close()
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