chore: import upstream snapshot with attribution

test/cpp/fluid/platform/place_test.cc

@@ -0,0 +1,57 @@
+//  Copyright (c) 2018 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 "paddle/phi/common/place.h"
+
+#include "gtest/gtest.h"
+
+TEST(Place, Equality) {
+  phi::CPUPlace cpu;
+  phi::GPUPlace g0(0), g1(1), gg0(0);
+  phi::XPUPlace x0(0), x1(1), xx0(0);
+
+  EXPECT_EQ(cpu, cpu);
+  EXPECT_EQ(g0, g0);
+  EXPECT_EQ(g1, g1);
+  EXPECT_EQ(g0, gg0);
+  EXPECT_EQ(x0, x0);
+  EXPECT_EQ(x1, x1);
+  EXPECT_EQ(x0, xx0);
+
+  EXPECT_NE(g0, g1);
+  EXPECT_NE(x0, x1);
+
+  EXPECT_TRUE(phi::places_are_same_class(g0, gg0));
+  EXPECT_TRUE(phi::places_are_same_class(x0, xx0));
+  EXPECT_FALSE(phi::places_are_same_class(g0, cpu));
+  EXPECT_FALSE(phi::places_are_same_class(x0, cpu));
+  EXPECT_FALSE(phi::places_are_same_class(g0, x0));
+}
+
+TEST(Place, Print) {
+  {
+    std::stringstream ss;
+    ss << phi::XPUPlace(1);
+    EXPECT_EQ("Place(xpu:1)", ss.str());
+  }
+  {
+    std::stringstream ss;
+    ss << phi::GPUPlace(1);
+    EXPECT_EQ("Place(gpu:1)", ss.str());
+  }
+  {
+    std::stringstream ss;
+    ss << phi::CPUPlace();
+    EXPECT_EQ("Place(cpu)", ss.str());
+  }
+}