Files
nearby/internal/test/fake_clock_test.cc
Guogang Li c6566b00c7 internal update
PiperOrigin-RevId: 549351164
2023-07-19 10:15:19 -07:00

66 lines
1.9 KiB
C++

// Copyright 2021 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 "internal/test/fake_clock.h"
#include "gmock/gmock.h"
#include "protobuf-matchers/protocol-buffer-matchers.h"
#include "gtest/gtest.h"
namespace nearby {
namespace {
TEST(FakeClock, TestGetCurrentTime) {
FakeClock clock;
EXPECT_GT(absl::ToUnixNanos(clock.Now()), 0);
}
TEST(FakeClock, TestFastForward) {
FakeClock clock;
absl::Time time1 = clock.Now();
clock.FastForward(absl::Nanoseconds(1500));
absl::Time time2 = clock.Now();
EXPECT_EQ(absl::ToUnixNanos(time1) + 1500, absl::ToUnixNanos(time2));
EXPECT_EQ(clock.GetObserversCount(), 0);
}
TEST(FakeClock, TestReset) {
FakeClock clock;
int count = 0;
auto observer = [&count]() { count++; };
clock.AddObserver("test", observer);
clock.FastForward(absl::Nanoseconds(1500));
EXPECT_EQ(count, 1);
EXPECT_EQ(clock.GetObserversCount(), 1);
clock.Reset();
EXPECT_EQ(clock.GetObserversCount(), 0);
}
TEST(FakeClock, TestObserver) {
FakeClock clock;
int count = 0;
auto observer = [&count]() { count++; };
clock.AddObserver("test", observer);
clock.FastForward(absl::Nanoseconds(1500));
EXPECT_EQ(count, 1);
clock.FastForward(absl::Nanoseconds(1500));
EXPECT_EQ(count, 2);
clock.RemoveObserver("test");
clock.FastForward(absl::Nanoseconds(1500));
EXPECT_EQ(count, 2);
}
} // namespace
} // namespace nearby