Stole some code from djangorestframework/runtests/runcoverage.py so that…

Stole some code from djangorestframework/runtests/runcoverage.py so that coverage is also implemented for the examples. Because Jenkins looks for a coverage.xml file for all defeined projects in tox.ini we need it to pass the tests.

examples/runtests.py

@@ -4,10 +4,24 @@ os.environ['DJANGO_SETTINGS_MODULE'] = 'settings'
 
 from django.conf import settings
 from django.test.utils import get_runner
+from coverage import coverage
 
 def main():
+    """Run the tests for the examples and generate a coverage report."""
+    
+    # Discover the list of all modules that we should test coverage for
+    project_dir = os.path.dirname(__file__)
+    cov_files = []
+    for (path, dirs, files) in os.walk(project_dir):
+        # Drop tests and runtests directories from the test coverage report
+        if os.path.basename(path) == 'tests' or os.path.basename(path) == 'runtests':
+            continue
+        cov_files.extend([os.path.join(path, file) for file in files if file.endswith('.py')])
     TestRunner = get_runner(settings)
-
+    
+    cov = coverage()
+    cov.erase()
+    cov.start()
     if hasattr(TestRunner, 'func_name'):
         # Pre 1.2 test runners were just functions,
         # and did not support the 'failfast' option.
@@ -21,6 +35,9 @@ def main():
         test_runner = TestRunner()
         failures = test_runner.run_tests(['blogpost', 'pygments_api'])
 
+    cov.stop()
+    cov.report(cov_files)
+    cov.xml_report(cov_files)
     sys.exit(failures)
 
 if __name__ == '__main__':