A script to run just one test, based on the test failure description.

runone.py

+#!/usr/bin/env python
+from django.core import management
+
+import argparse
+import os
+import sys
+
+# I want this:
+#   ERROR: test_update_and_fetch (mitx.cms.djangoapps.contentstore.tests.test_course_settings.CourseDetailsViewTest)
+# to become:
+#   test --settings=cms.envs.test --pythonpath=. -s cms/djangoapps/contentstore/tests/test_course_settings.py:CourseDetailsViewTest.test_update_and_fetch
+
+def find_full_path(path_to_file):
+    """Find the full path where we only have a relative path from somewhere in the tree."""
+    for subdir, dirs, files in os.walk("."):
+        full = os.path.relpath(os.path.join(subdir, path_to_file))
+        if os.path.exists(full):
+            return full
+
+def main(argv):
+    parser = argparse.ArgumentParser(description="Run just one test")
+    parser.add_argument('--nocapture', '-s', action='store_true', help="Don't capture stdout (any stdout output will be printed immediately)")
+    parser.add_argument('words', metavar="WORDS", nargs='+', help="The description of a test failure, like 'ERROR: test_set_missing_field (courseware.tests.test_model_data.TestStudentModuleStorage)'")
+
+    args = parser.parse_args(argv)
+    words = []
+    # Collect all the words, ignoring what was quoted together, and get rid of parens.
+    for argword in args.words:
+        words.extend(w.strip("()") for w in argword.split())
+    # If it starts with "ERROR:" or "FAIL:", just ignore that.
+    if words[0].endswith(':'):
+        del words[0]
+
+    test_method = words[0]
+    test_path = words[1].split('.')
+    if test_path[0] == 'mitx':
+        del test_path[0]
+    test_class = test_path[-1]
+    del test_path[-1]
+
+    test_py_path = "%s.py" % ("/".join(test_path))
+    test_py_path = find_full_path(test_py_path)
+    test_spec = "%s:%s.%s" % (test_py_path, test_class, test_method)
+
+    if test_py_path.startswith('cms'):
+        settings = 'cms.envs.test'
+    elif test_py_path.startswith('lms'):
+        settings = 'lms.envs.test'
+    else:
+        raise Exception("Couldn't determine settings to use!")
+
+    django_args = ["django-admin.py", "test", "--pythonpath=."]
+    django_args.append("--settings=%s" % settings)
+    if args.nocapture:
+        django_args.append("-s")
+    django_args.append(test_spec)
+
+    print " ".join(django_args)
+    management.execute_from_command_line(django_args)
+
+if __name__ == "__main__":
+    main(sys.argv[1:])