test: run ./xmodule/ LibraryContentTests only in CMS

xmodule/tests/test_library_content.py

@@ -1,5 +1,5 @@
 """
-Basic unit tests for LibraryContentBlock
+ unit tests for LibraryContentBlock
 
 Higher-level tests are in `cms/djangoapps/contentstore/tests/test_libraries.py`.
 """
@@ -15,6 +15,7 @@
 from web_fragments.fragment import Fragment
 from xblock.runtime import Runtime as VanillaRuntime
 
+from openedx.core.djangolib.testing.utils import skip_unless_cms
 from xmodule.library_content_block import ANY_CAPA_TYPE_VALUE, LibraryContentBlock
 from xmodule.library_tools import LibraryToolsService
 from xmodule.modulestore import ModuleStoreEnum
@@ -31,6 +32,7 @@
 dummy_render = lambda block, _: Fragment(block.data)  # pylint: disable=invalid-name
 
 
+@skip_unless_cms
 class LibraryContentTest(MixedSplitTestCase):
     """
     Base class for tests of LibraryContentBlock (library_content_block.py)