adding test case to cover filtered exports

Author: jtsodapop

tests/integration/test_export.py

@@ -1,4 +1,7 @@
+from turtle import st
 import uuid
+
+from numpy import empty
 from labelbox.data.annotation_types.annotation import ObjectAnnotation
 
 from labelbox.schema.annotation_import import LabelImport
@@ -55,3 +58,42 @@ def test_export_annotations_nested_checklist(
 
     nested_class_answers = object_annotation.classifications[0].value.answer
     assert len(nested_class_answers) == 2
+
+
+def test_export_filtered_dates(client,
+                               configured_project_with_complex_ontology):
+    project, data_row = configured_project_with_complex_ontology
+    ontology = project.ontology().normalized
+
+    tool = ontology["tools"][0]
+
+    data = [{
+        "uuid": str(uuid.uuid4()),
+        "schemaId": tool['featureSchemaId'],
+        "dataRow": {
+            "id": data_row.uid
+        },
+        "bbox": {
+            "top": 20,
+            "left": 20,
+            "height": 50,
+            "width": 50
+        }
+    }]
+
+    task = LabelImport.create_from_objects(client, project.uid,
+                                           f'label-import-{uuid.uuid4()}', data)
+    task.wait_until_done()
+
+    regular_export = project.export_labels(download=True)
+    assert len(regular_export) == 1
+
+    filtered_export = project.export_labels(download=True, start="2020-01-01")
+    assert len(filtered_export) == 1
+
+    empty_export = project.export_labels(download=True,
+                                         start="2020-01-01",
+                                         end="2020-01-02")
+    assert len(empty_export) == 0
+
+    # new_export = project.export_labels(start)