#141: Add test case for distinct filter on count endpoint

test/icat/endpoints/test_count_with_filters_icat.py

@@ -2,17 +2,37 @@
 
 
 class TestICATCountWithFilters:
-    @pytest.mark.usefixtures("single_investigation_test_data")
+    @pytest.mark.parametrize(
+        "query_params, expected_result",
+        [
+            pytest.param(
+                '?where={"title": {"like": "Test data for the Python ICAT Backend on'
+                ' on DataGateway API"}}',
+                5,
+                id="Filter on test data",
+            ),
+            pytest.param(
+                '?where={"title": {"like": "Test data for the Python ICAT Backend on'
+                ' on DataGateway API"}}&distinct=["startDate"]',
+                1,
+                id="Distinct test data",
+            ),
+        ],
+    )
+    @pytest.mark.usefixtures("multiple_investigation_test_data")
     def test_valid_count_with_filters(
-        self, flask_test_app_icat, valid_icat_credentials_header,
+        self,
+        flask_test_app_icat,
+        valid_icat_credentials_header,
+        query_params,
+        expected_result,
     ):
         test_response = flask_test_app_icat.get(
-            '/investigations/count?where={"title": {"like": "Test data for the Python'
-            ' ICAT Backend on DataGateway API"}}',
+            f"/investigations/count{query_params}",
             headers=valid_icat_credentials_header,
         )
 
-        assert test_response.json == 1
+        assert test_response.json == expected_result
 
     def test_valid_no_results_count_with_filters(
         self, flask_test_app_icat, valid_icat_credentials_header,