Add test_slice, fix get slice

Author: mnoszczak

labelbox/client.py

@@ -1559,8 +1559,7 @@ def get_catalog_slice(self, slice_id) -> CatalogSlice:
         Returns:
             CatalogSlice
         """
-        query_str = """
-            query getSavedQueryPyApi($id: ID!) {
+        query_str = """query getSavedQueryPyApi($id: ID!) {
                 getSavedQuery(id: $id) {
                     id
                     name

tests/integration/test_slice.py

@@ -0,0 +1,15 @@
+import pytest
+
+
+def test_export_v2_slice(client):
+    # Since we don't have CRUD for slices, we'll just use the one that's already there
+    SLICE_ID = "clfgqf1c72mk107zx6ypo9bse"
+    slice = client.get_catalog_slice(SLICE_ID)
+    task = slice.export_v2(params={
+        "performance_details": False,
+        "label_details": True
+    })
+    task.wait_till_done()
+    assert task.status == "COMPLETE"
+    assert task.errors is None
+    assert len(task.result) != 0