chore: import upstream snapshot with attribution

test/cpp/phi/api/test_slice_api.cc

@@ -0,0 +1,47 @@
+/* Copyright (c) 2021 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. */
+
+#include <gtest/gtest.h>
+
+#include <memory>
+
+#include "paddle/phi/api/include/api.h"
+#include "paddle/phi/api/include/tensor.h"
+#include "paddle/phi/core/kernel_registry.h"
+
+PD_DECLARE_KERNEL(full, CPU, ALL_LAYOUT);
+
+namespace paddle {
+namespace tests {
+
+TEST(Tensor, slice) {
+  auto x = paddle::experimental::full({4, 3}, 1, phi::DataType::INT64);
+  auto slice_x = x.slice(1, 2);
+
+  // check slice result
+  ASSERT_EQ(slice_x.dims().size(), 2);
+  ASSERT_EQ(slice_x.dims()[0], 1);
+  ASSERT_EQ(slice_x.dims()[1], 3);
+  ASSERT_EQ(slice_x.numel(), 3);
+  ASSERT_EQ(slice_x.is_cpu(), true);
+  ASSERT_EQ(slice_x.type(), phi::DataType::INT64);
+  ASSERT_EQ(slice_x.layout(), phi::DataLayout::NCHW);
+  ASSERT_EQ(slice_x.initialized(), true);
+  for (int64_t i = 0; i < slice_x.numel(); ++i) {
+    ASSERT_EQ(slice_x.mutable_data<int64_t>()[i], 1);
+  }
+}
+
+}  // namespace tests
+}  // namespace paddle