test for doc helper

lib/sycamore/sycamore/tests/unit/functions/test_field_to_value.py

@@ -0,0 +1,22 @@
+from sycamore.data.document import Document
+
+class TestFieldToValue:
+    def test_field_to_value(self):
+        doc = Document(
+            text_representation="hello",
+            doc_id=1,
+            properties={"letter": "A", "animal": "panda", "math": {"pi": 3.14, "e": 2.72, "tanx": "sinx/cosx"}},
+        )
+
+        assert doc.field_to_value("text_representation") == "hello"
+        assert doc.field_to_value("doc_id") == 1
+        assert doc.field_to_value("properties.letter") == "A"
+        assert doc.field_to_value("properties.animal") == "panda"
+        assert doc.field_to_value("properties.math.pi") == 3.14
+        assert doc.field_to_value("properties.math.e") == 2.72
+        assert doc.field_to_value("properties.math.tanx") == "sinx/cosx"
+
+        assert doc.field_to_value("properties.math.log") is None
+        assert doc.field_to_value("document_id") is None
+        assert doc.field_to_value("text_representation.text") is None
+        assert doc.field_to_value("document_id.text") is None