Release based on cl/313536507.

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I83ec7dee1a7ef6f4bdfd47482c94d03910525b7e

cpp/platform/settable_future_test.cc

@@ -0,0 +1,98 @@
+// 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 "platform/api/settable_future.h"
+
+#include "platform/api/platform.h"
+#include "platform/ptr.h"
+#include "gmock/gmock.h"
+#include "gtest/gtest.h"
+
+namespace location {
+namespace nearby {
+
+namespace {
+
+enum TestEnum {
+  kValue1 = 1,
+  kValue2 = 2,
+};
+
+enum class ScopedTestEnum {
+  kValue1 = 1,
+  kValue2 = 2,
+};
+
+struct BigSizedStruct {
+  int data[100]{};
+};
+
+bool operator==(const BigSizedStruct& a, const BigSizedStruct& b) {
+  return memcmp(a.data, b.data, sizeof(BigSizedStruct::data)) == 0;
+}
+
+bool operator!=(const BigSizedStruct& a, const BigSizedStruct& b) {
+  return !(a == b);
+}
+
+}  // namespace
+
+TEST(SettableFutureTest, SupportIntegralTypes) {
+  auto p = platform::ImplementationPlatform::createSettableFuture<int>();
+  p->set(5);
+  ASSERT_EQ(p->get().exception(), Exception::kSuccess);
+  ASSERT_EQ(p->get().result(), 5);
+}
+
+TEST(SettableFutureTest, SetExceptionIsPropagated) {
+  auto p = platform::ImplementationPlatform::createSettableFuture<int>();
+  p->setException({Exception::kIo});
+  ASSERT_EQ(p->get().exception(), Exception::kIo);
+}
+
+TEST(SettableFutureTest, SupportEnum) {
+  auto p = platform::ImplementationPlatform::createSettableFuture<TestEnum>();
+  p->set(TestEnum::kValue1);
+  ASSERT_EQ(p->get().exception(), Exception::kSuccess);
+  ASSERT_EQ(p->get().result(), TestEnum::kValue1);
+}
+
+TEST(SettableFutureTest, SupportScopedEnum) {
+  auto p =
+      platform::ImplementationPlatform::createSettableFuture<ScopedTestEnum>();
+  p->set(ScopedTestEnum::kValue1);
+  ASSERT_EQ(p->get().exception(), Exception::kSuccess);
+  ASSERT_EQ(p->get().result(), ScopedTestEnum::kValue1);
+}
+
+TEST(SettableFutureTest, SetTakesCopyOfValue) {
+  // Default constructor is zero-initalizing all data in BigSizedStruct.
+  BigSizedStruct v1;
+  auto p = platform::ImplementationPlatform::createSettableFuture<
+      BigSizedStruct>();
+  v1.data[0] = 5;  // Changing value before calling set() will affect stored
+  v1.data[7] = 3;  // value.
+  p->set(v1);
+  v1.data[1] = 6;  // Changing value after calling set() will not affect stored
+  v1.data[5] = 4;  // value.
+  ASSERT_EQ(p->get().exception(), Exception::kSuccess);
+  BigSizedStruct v2 = p->get().result();
+  ASSERT_NE(v1, v2);
+  v1.data[1] = 0;
+  v1.data[5] = 0;
+  ASSERT_EQ(v2, v1);
+}
+
+}  // namespace nearby
+}  // namespace location