Expand testing of Test LiveServerTestCase static files serving.

tests/runtests.py

@@ -60,6 +60,7 @@ ALWAYS_INSTALLED_APPS = [
     'staticfiles_tests',
     'staticfiles_tests.apps.test',
     'staticfiles_tests.apps.no_label',
+    'servers.another_app',
 ]
 
 

tests/servers/another_app/static/another_app/another_app_static_file.txt

@@ -0,0 +1 @@
+static file from another_app

tests/servers/tests.py

@@ -145,6 +145,14 @@ class LiveServerViews(LiveServerBase):
         f = self.urlopen('/static/example_static_file.txt')
         self.assertEqual(f.read().rstrip(b'\r\n'), b'example static file')
 
+    def test_collectstatic_emulation(self):
+        """
+        Test LiveServerTestCase use of staticfiles' serve() allows it to
+        discover app's static assets without having to collectstatic first.
+        """
+        f = self.urlopen('/static/another_app/another_app_static_file.txt')
+        self.assertEqual(f.read().rstrip(b'\r\n'), b'static file from another_app')
+
     def test_media_files(self):
         """
         Ensure that the LiveServerTestCase serves media files.