django: running tests with coverage

I am trying to run tests on django with coverage. It works fine, but it doesn't detect class definitions, because they are defined before coverage is started. I have following test runner, that I use, when I compute coverage:

import sys
import os
import logging

from django.conf import settings

MAIN_TEST_RUNNER = 'django.test.simple.run_tests'

if settings.COMPUTE_COVERAGE:
    try:
        import coverage
    except ImportError:
        print "Warning: coverage module not found: test code coverage will not be computed"
    else:
        coverage.exclude('def __unicode__')
        coverage.exclude('if DEBUG')
        coverage.exclude('if settings.DEBUG')
        coverage.exclude('raise')
        coverage.erase()
        coverage.start()
        MAIN_TEST_RUNNER = 'django-test-coverage.runner.run_tests'

def run_tests(test_labels, verbosity=1, interactive=True, extra_tests=[]):
    # start coverage - jeśli włączmy już tutaj, a wyłączymy w django-test-coverage,
    # to dostaniemy dobrze wyliczone pokrycie dla instrukcji wykonywanych przy
    # imporcie modułów
    test_path = MAIN_TEST_RUNNER.split('.')
    # Allow开发者_如何学Go for Python 2.5 relative paths
    if len(test_path) > 1:
        test_module_name = '.'.join(test_path[:-1])
    else:
        test_module_name = '.'
    test_module = __import__(test_module_name, {}, {}, test_path[-1])
    test_runner = getattr(test_module, test_path[-1])
    failures = test_runner(test_labels, verbosity=verbosity, interactive=interactive)
    if failures:
        sys.exit(failures)

What can I do, to have classes also included in coverage? Otherwise I have quite a low coverage and I can't easily detect places, that really need to be covered.

The simplest thing to do is to use coverage to execute the test runner. If your runner is called "runner.py", then use:

coverage run runner.py

You can put your four exclusions into a .coveragerc file, and you'll have all of the benefits of your coverage code, without keeping any of your coverage code.