chore: import upstream snapshot with attribution

test/legacy_test/test_imperative_framework.py

@@ -0,0 +1,64 @@
+# Copyright (c) 2019 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
+
+import numpy as np
+
+import paddle
+from paddle import base
+
+
+class MLP(paddle.nn.Layer):
+    def __init__(self, input_size):
+        super().__init__()
+        self._linear1 = paddle.nn.Linear(
+            input_size,
+            3,
+            weight_attr=paddle.ParamAttr(
+                initializer=paddle.nn.initializer.Constant(value=0.1)
+            ),
+            bias_attr=paddle.ParamAttr(
+                initializer=paddle.nn.initializer.Constant(value=0.1)
+            ),
+        )
+        self._linear2 = paddle.nn.Linear(
+            3,
+            4,
+            weight_attr=paddle.ParamAttr(
+                initializer=paddle.nn.initializer.Constant(value=0.1)
+            ),
+            bias_attr=paddle.ParamAttr(
+                initializer=paddle.nn.initializer.Constant(value=0.1)
+            ),
+        )
+
+    def forward(self, inputs):
+        x = self._linear1(inputs)
+        x = self._linear2(x)
+        x = paddle.sum(x)
+        return x
+
+
+class TestDygraphFramework(unittest.TestCase):
+    def test_dygraph_to_string(self):
+        np_inp = np.array([[1.0, 2.0], [3.0, 4.0]], dtype=np.float32)
+        with base.dygraph.guard():
+            var_inp = paddle.to_tensor(np_inp)
+            print(str(var_inp))
+
+
+if __name__ == '__main__':
+    paddle.disable_static()
+    unittest.main()