😏

evals/competing-implementations/fixture/test_dedupe.py

@@ -0,0 +1,19 @@
+import unittest
+
+from dedupe import stable_unique
+
+
+class DedupeTests(unittest.TestCase):
+    def test_preserves_first_and_order(self):
+        values = [{"id": 2, "v": "a"}, {"id": 1}, {"id": 2, "v": "b"}]
+        self.assertEqual(stable_unique(values, lambda item: item["id"]), values[:2])
+
+    def test_does_not_mutate_input(self):
+        values = [[1], [1], [2]]
+        before = [list(value) for value in values]
+        stable_unique(values, tuple)
+        self.assertEqual(values, before)
+
+
+if __name__ == "__main__":
+    unittest.main()