chore: import upstream snapshot with attribution

test/sot/test_sot_cache.py

@@ -0,0 +1,51 @@
+# Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import unittest
+
+from paddle.jit.sot.utils import Cache
+
+
+class CustomCache(Cache):
+    def key_fn(self, x):
+        return x
+
+    def value_fn(self, x):
+        return x
+
+
+class TestCache(unittest.TestCase):
+    def test_basic(self):
+        cache = CustomCache()
+        self.assertEqual(cache(1), 1)
+        self.assertEqual(cache(1), 1)
+
+    def test_int_collision(self):
+        cache = CustomCache()
+        # -1 and -2 hash to the same value
+        self.assertEqual(cache(-1), -1)
+        self.assertEqual(cache(-2), -2)
+
+    def test_bool_and_int_collision(self):
+        cache = CustomCache()
+        # 1 and True hash to the same value
+        self.assertEqual(cache(True), True)
+        self.assertEqual(cache(1), 1)
+        # 0 and False hash to the same value
+        self.assertEqual(cache(False), False)
+        self.assertEqual(cache(0), 0)
+
+
+if __name__ == "__main__":
+    unittest.main()