Add test for resources.py

import_export_extensions/resources.py

@@ -252,8 +252,6 @@ def update_task_state(
             return
 
         async_result = result.AsyncResult(current_task.request.get("id"))
-        if not async_result.result:
-            return
 
         self._update_current_task_state(
             state=state,

test_project/tests/test_resources.py

@@ -0,0 +1,45 @@
+from rest_framework.exceptions import ValidationError
+
+import pytest
+
+from import_export_extensions import results
+from test_project.fake_app.factories import ArtistFactory
+from test_project.fake_app.models import Artist
+
+from ..fake_app.resources import SimpleArtistResource
+
+
+def test_resource_get_queryset(existing_artist: Artist):
+    """Check that `get_queryset` contains existing artist."""
+    assert existing_artist in SimpleArtistResource().get_queryset()
+
+
+def test_resource_with_filter_kwargs(existing_artist: Artist):
+    """Check that `get_queryset` with filter kwargs exclude existing artist."""
+    expected_artist_name = "Expected Artist"
+    expected_artist = ArtistFactory(name=expected_artist_name)
+    resource_queryset = SimpleArtistResource(
+        filter_kwargs={"name": expected_artist_name},
+    ).get_queryset()
+
+    assert existing_artist not in resource_queryset
+    assert expected_artist in resource_queryset
+
+
+def test_resource_with_invalid_filter_kwargs():
+    """Check that `get_queryset` raise error if filter kwargs is invalid."""
+    with pytest.raises(
+        ValidationError,
+        match=(
+            r"{'id':.*ErrorDetail.*string='Enter a number.', code='invalid'.*"
+        ),
+    ):
+        SimpleArtistResource(
+            filter_kwargs={"id": "invalid_id"},
+        ).get_queryset()
+
+
+def test_resource_get_error_class():
+    """Check that returns correct error class."""
+    error_class = SimpleArtistResource().get_error_result_class()
+    assert error_class is results.Error