chore: import upstream snapshot with attribution

test/cpp/phi/common/test_data_layout.cc

@@ -0,0 +1,52 @@
+/* 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 <iostream>
+#include <sstream>
+
+#include "paddle/common/exception.h"
+#include "paddle/common/layout.h"
+
+namespace phi {
+namespace tests {
+
+TEST(DataLayout, OStream) {
+  std::ostringstream oss;
+  oss << DataLayout::UNDEFINED;
+  EXPECT_EQ(oss.str(), "Undefined(AnyLayout)");
+  oss.str("");
+  oss << DataLayout::ANY;
+  EXPECT_EQ(oss.str(), "Undefined(AnyLayout)");
+  oss.str("");
+  oss << DataLayout::NHWC;
+  EXPECT_EQ(oss.str(), "NHWC");
+  oss.str("");
+  oss << DataLayout::NCHW;
+  EXPECT_EQ(oss.str(), "NCHW");
+  oss.str("");
+  oss << DataLayout::ONEDNN;
+  EXPECT_EQ(oss.str(), "ONEDNN");
+  oss.str("");
+  try {
+    oss << DataLayout::NUM_DATA_LAYOUTS;
+  } catch (const std::exception& exception) {
+    std::string ex_msg = exception.what();
+    EXPECT_TRUE(ex_msg.find("Unknown Data Layout type") != std::string::npos);
+  }
+}
+
+}  // namespace tests
+}  // namespace phi