Internal change

PiperOrigin-RevId: 380080172

cpp/platform/impl/windows/atomic_reference_test.cc

@@ -0,0 +1,71 @@
+// Copyright 2020 Google LLC
+//
+// 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
+//
+//     https://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 "googletest/googletest/include/gtest/gtest.h"
+#include "platform/impl/windows/atomic_reference.h"
+
+TEST(atomic_reference, SuccessfulCreation) {
+  // Arrange
+  location::nearby::windows::AtomicUint32 atomicUint32;
+  uint32_t result = UINT32_MAX;
+  const uint32_t expected = 0;
+
+  // Act
+  result = atomicUint32.Get();
+
+  // Assert
+  EXPECT_EQ(result, expected);
+}
+
+TEST(atomic_reference, SuccessfulMaxSet) {
+  // Arrange
+  location::nearby::windows::AtomicUint32 atomicUint32;
+  uint32_t result = 0;
+  const uint32_t expected = UINT32_MAX;
+
+  // Act
+  atomicUint32.Set(UINT32_MAX);
+  result = atomicUint32.Get();
+
+  // Assert
+  EXPECT_EQ(result, expected);
+}
+
+TEST(atomic_reference, SuccessfulMinSet) {
+  // Arrange
+  location::nearby::windows::AtomicUint32 atomicUint32;
+  uint32_t result = UINT32_MAX;
+  const uint32_t expected = 0;
+
+  // Act
+  atomicUint32.Set(0);
+  result = atomicUint32.Get();
+
+  // Assert
+  EXPECT_EQ(result, expected);
+}
+
+TEST(atomic_reference, SetNegativeOneReturnsMAXUINT) {
+  // Arrange
+  location::nearby::windows::AtomicUint32 atomicUint32;
+  uint32_t result = 0;
+  const uint32_t expected = UINT32_MAX;
+
+  // Act
+  atomicUint32.Set(-1);  // Try Set -1, should actually store UINT32_MAX
+  result = atomicUint32.Get();
+
+  // Assert
+  EXPECT_EQ(result, expected);
+}