test: add tests for SearchAPISkipFilter #263

test/search_api/test_skip_filter.py

@@ -0,0 +1,30 @@
+import pytest
+
+from datagateway_api.src.common.config import config
+from datagateway_api.src.common.exceptions import FilterError
+from datagateway_api.src.common.helpers import get_icat_properties
+from datagateway_api.src.search_api.filters import SearchAPISkipFilter
+
+
+class TestSearchAPISkipFilter:
+    @pytest.mark.parametrize(
+        "skip_value", [pytest.param(10, id="typical"), pytest.param(0, id="boundary")],
+    )
+    def test_valid_skip_value(self, icat_query, skip_value):
+        test_filter = SearchAPISkipFilter(skip_value)
+        test_filter.apply_filter(icat_query)
+
+        assert icat_query.limit == (
+            skip_value,
+            get_icat_properties(
+                config.search_api.icat_url, config.search_api.icat_check_cert,
+            )["maxEntities"],
+        )
+
+    @pytest.mark.parametrize(
+        "skip_value",
+        [pytest.param(-375, id="extreme invalid"), pytest.param(-1, id="boundary")],
+    )
+    def test_invalid_skip_value(self, icat_query, skip_value):
+        with pytest.raises(FilterError):
+            SearchAPISkipFilter(skip_value)