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#include "base/clock_mock.h"

#include "absl/strings/string_view.h"
#include "absl/time/civil_time.h"
#include "absl/time/time.h"
#include "base/clock.h"
#include "testing/gunit.h"

namespace mozc {
namespace {

TEST(ParseTimeOrDieTest, ParsesTimeAtUtc) {
  EXPECT_EQ(ParseTimeOrDie("2020-12-23T13:24:35Z"),
            absl::FromCivil(absl::CivilSecond(2020, 12, 23, 13, 24, 35),
                            absl::UTCTimeZone()));
}

TEST(ClockMockTest, GetAbslTimeReturnsInitiallyGivenTime) {
  ClockMock mock(ParseTimeOrDie("2020-12-23T13:24:35Z"));
  EXPECT_EQ(mock.GetAbslTime(), ParseTimeOrDie("2020-12-23T13:24:35Z"));
}

TEST(ClockMockTest, AdvanceAdvancesByGivenDuration) {
  ClockMock mock(ParseTimeOrDie("2020-12-23T13:24:35Z"));

  mock.Advance(absl::Seconds(1));
  EXPECT_EQ(mock.GetAbslTime(), ParseTimeOrDie("2020-12-23T13:24:36Z"));

  mock.Advance(absl::Hours(12));
  EXPECT_EQ(mock.GetAbslTime(), ParseTimeOrDie("2020-12-24T01:24:36Z"));
}

TEST(ClockMockTest, AutoAdvanceAdvancesOnEveryGetAbslTimeCall) {
  ClockMock mock(ParseTimeOrDie("2020-12-23T13:24:35Z"));
  mock.AutoAdvance(absl::Seconds(5));
  EXPECT_EQ(mock.GetAbslTime(), ParseTimeOrDie("2020-12-23T13:24:35Z"));
  EXPECT_EQ(mock.GetAbslTime(), ParseTimeOrDie("2020-12-23T13:24:40Z"));
  EXPECT_EQ(mock.GetAbslTime(), ParseTimeOrDie("2020-12-23T13:24:45Z"));
}

TEST(ScopedClockMockTest, AbslTime) {
  {
    ScopedClockMock mock(ParseTimeOrDie("2020-12-23T13:24:35Z"));
    EXPECT_EQ(Clock::GetAbslTime(), ParseTimeOrDie("2020-12-23T13:24:35Z"));
  }
  EXPECT_NE(Clock::GetAbslTime(), ParseTimeOrDie("2020-12-23T13:24:35Z"));
}

}  // namespace
}  // namespace mozc
