Add openpype_mongo command flag for testing. (#5676)

* Add openpype_mongo command flag for testing.

* Revert back to TEST_OPENPYPE_MONGO

TEST_OPENPYPE_MONGO is placeholder used in all source test sip in `input/env_vars/env_var` not a env variable itself

* Fix openpype_mongo fixture

Fixture decorator was missing.
If value passed from command line should be used, it must come first as `env_var` fixture should already contain valid default Mongo uri.

* Renamed command line argument to mongo_url

---------

Co-authored-by: kalisp <petr.kalis@gmail.com>

tests/conftest.py

@@ -29,6 +29,11 @@ def pytest_addoption(parser):
         help="True - only setup test, do not run any tests"
     )
 
+    parser.addoption(
+        "--mongo_url", action="store", default=None,
+        help="Provide url of the Mongo database."
+    )
+
 
 @pytest.fixture(scope="module")
 def test_data_folder(request):
@@ -55,6 +60,11 @@ def setup_only(request):
     return request.config.getoption("--setup_only")
 
 
+@pytest.fixture(scope="module")
+def mongo_url(request):
+    return request.config.getoption("--mongo_url")
+
+
 @pytest.hookimpl(tryfirst=True, hookwrapper=True)
 def pytest_runtest_makereport(item, call):
     # execute all other hooks to obtain the report object

tests/lib/testing_classes.py

@@ -147,11 +147,11 @@ class ModuleUnitTest(BaseTest):
 
     @pytest.fixture(scope="module")
     def db_setup(self, download_test_data, env_var, monkeypatch_session,
-                 request):
+                 request, mongo_url):
         """Restore prepared MongoDB dumps into selected DB."""
         backup_dir = os.path.join(download_test_data, "input", "dumps")
 
-        uri = os.environ.get("OPENPYPE_MONGO")
+        uri = mongo_url or os.environ.get("OPENPYPE_MONGO")
         db_handler = DBHandler(uri)
         db_handler.setup_from_dump(self.TEST_DB_NAME, backup_dir,
                                    overwrite=True,