another fix to custom dataloder test and github action

tests/conftest.py

@@ -72,7 +72,7 @@ def pytest_collection_modifyitems(config, items):
         if not run_internet and ("internet" in item.keywords):
             item.add_marker(skip_internet)
 
-        # All tests marked with `pytest.custom.dataloader` get skipped unless
+        # All tests marked with `pytest.mark.custom.dataloader` get skipped unless
         # `--custom.dataloader-tests` passed
         if not run_custom_dataloader and ("custom.dataloader" in item.keywords):
             item.add_marker(skip_custom_dataloader)

tests/dataloaders/test_custom_dataloader.py

@@ -2,8 +2,11 @@
 
 import sys
 
-# the next should be ready for improting
-sys.path.insert(0, "/cellxgene-census/api/python/cellxgene_census/src")
+# should be ready for importing the cloned branch on a remote machine that runs github action
+sys.path.insert(
+    0,
+    "/home/runner/work/scvi-tools/scvi-tools/" "cellxgene-census/api/python/cellxgene_census/src",
+)
 sys.path.insert(0, "src")
 
 import cellxgene_census
@@ -18,7 +21,7 @@
 from scvi.data import synthetic_iid
 
 
-@pytest.custom.dataloader
+@pytest.mark.custom.dataloader
 def test_custom_dataloader(save_path):
     # this test checks the local custom dataloder made by CZI and run several tests with it
     census = cellxgene_census.open_soma(census_version="stable")