add basic operator tests

tests/query/operators/test_json.py

@@ -1,7 +1,8 @@
+from unittest import TestCase
+
 from piccolo.columns import JSONB
-from piccolo.query.operators.json import GetChildElement
+from piccolo.query.operators.json import GetChildElement, GetElementFromPath
 from piccolo.table import Table
-from piccolo.testing.test_case import AsyncTableTest
 from tests.base import engines_skip
 
 
@@ -10,18 +11,42 @@ class RecordingStudio(Table):
 
 
 @engines_skip("sqlite")
-class TestArrow(AsyncTableTest):
+class TestGetChildElement(TestCase):
+
+    def test_query(self):
+        """
+        Make sure the generated SQL looks correct.
+        """
+        querystring = GetChildElement(
+            GetChildElement(RecordingStudio.facilities, "a"), "b"
+        )
+
+        sql, query_args = querystring.compile_string()
+
+        self.assertEqual(
+            sql,
+            '"recording_studio"."facilities" -> $1 -> $2',
+        )
+
+        self.assertListEqual(query_args, ["a", "b"])
+
+
+@engines_skip("sqlite")
+class TestGetElementFromPath(TestCase):
 
-    tables = [RecordingStudio]
+    def test_query(self):
+        """
+        Make sure the generated SQL looks correct.
+        """
+        querystring = GetElementFromPath(
+            RecordingStudio.facilities, ["a", "b"]
+        )
 
-    async def test_nested(self):
-        await RecordingStudio(
-            {RecordingStudio.facilities: {"a": {"b": {"c": 1}}}}
-        ).save()
+        sql, query_args = querystring.compile_string()
 
-        response = await RecordingStudio.select(
-            GetChildElement(
-                GetChildElement(RecordingStudio.facilities, "a"), "b"
-            ).as_alias("b_value")
+        self.assertEqual(
+            sql,
+            '"recording_studio"."facilities" #> $1',
         )
-        self.assertListEqual(response, [{"b_value": '{"c": 1}'}])
+
+        self.assertListEqual(query_args, [["a", "b"]])