Add command to dump the course_ids available to the LMS

lms/djangoapps/courseware/management/commands/dump_course_ids.py

@@ -0,0 +1,36 @@
+# pylint: disable=missing-docstring
+
+from optparse import make_option
+from textwrap import dedent
+
+from django.core.management.base import BaseCommand, CommandError
+
+from xmodule.modulestore.django import modulestore
+
+
+class Command(BaseCommand):
+    """
+    Simple command to dump the course_ids available to the lms.
+    """
+    help = dedent(__doc__).strip()
+    option_list = BaseCommand.option_list + (
+        make_option('--modulestore',
+                    action='store',
+                    default='default',
+                    help='Name of the modulestore to use'),
+    )
+
+    def handle(self, *args, **options):
+        output = []
+
+        try:
+            name = options['modulestore']
+            store = modulestore(name)
+        except KeyError:
+            raise CommandError("Unknown modulestore {}".format(name))
+
+        for course in store.get_courses():
+            course_id = course.location.course_id
+            output.append(course_id)
+
+        return '\n'.join(output) + '\n'

lms/djangoapps/courseware/tests/test_commands.py

@@ -0,0 +1,45 @@
+"""Tests for Django management commands"""
+
+from StringIO import StringIO
+
+from django.core.management import call_command
+from django.test.utils import override_settings
+
+from courseware.tests.tests import TEST_DATA_MONGO_MODULESTORE
+
+from xmodule.modulestore.django import modulestore
+from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
+from xmodule.modulestore.xml_importer import import_from_xml
+
+DATA_DIR = 'common/test/data/'
+
+
+@override_settings(MODULESTORE=TEST_DATA_MONGO_MODULESTORE)
+class CommandTestCase(ModuleStoreTestCase):
+    """Parent class with helpers for testing management commands"""
+
+    def load_courses(self):
+        """Load test courses and return list of ids"""
+        store = modulestore()
+        import_from_xml(store, DATA_DIR, ['toy', 'simple'])
+        return [course.id for course in store.get_courses()]
+
+    def call_command(self, name, *args, **kwargs):
+        """Call management command and return output"""
+        out = StringIO()  # To Capture the output of the command
+        call_command(name, *args, stdout=out, **kwargs)
+        out.seek(0)
+        return out.read()
+
+
+class CommandsTestCase(CommandTestCase):
+    """Test case for management commands"""
+
+    def setUp(self):
+        self.loaded_courses = self.load_courses()
+
+    def test_dump_course_ids(self):
+        kwargs = {'modulestore': 'default'}
+        output = self.call_command('dump_course_ids', **kwargs)
+        dumped_courses = output.strip().split('\n')
+        self.assertEqual(self.loaded_courses, dumped_courses)