Add failing tests

Author: alukach

tests/resources/test_collection.py

@@ -642,3 +642,24 @@ async def test_get_collections_search_offset_1(
     prev_link = list(filter(lambda link: link["rel"] == "previous", links))[0]
     # offset=0 should not be in the previous link (because it's useless)
     assert "offset" not in prev_link["href"]
+
+@pytest.mark.parametrize(
+    "filter",
+    [
+        "true",
+        "1=1",
+        "false",
+        "1=0",
+    ],
+)
+async def test_get_collections_filter(
+    app_client, load_test_collection, load_test2_collection, filter
+):
+    """
+    Test CQL2 filters on the collections endpoint
+    """
+    resp = await app_client.get(
+        "/collections",
+        params={"filter": filter},
+    )
+    assert resp.status_code == 200