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package utils
import (
"sync"
"testing"
"time"
"github.com/stretchr/testify/require"
)
var timerTestMu sync.Mutex
func checkTimeStamp(tb testing.TB, expectedCurrent, actualCurrent uint32) {
tb.Helper()
// Test with buffer of ±2 seconds for CI environment tolerance
require.True(tb, actualCurrent >= expectedCurrent-2 && actualCurrent <= expectedCurrent+2,
"Expected timestamp %d (±2s), got %d (diff: %d)", expectedCurrent, actualCurrent, int64(actualCurrent)-int64(expectedCurrent))
}
func Test_TimeStampUpdater(t *testing.T) {
timerTestMu.Lock()
defer timerTestMu.Unlock()
StartTimeStampUpdater()
defer StopTimeStampUpdater()
now := uint32(time.Now().Unix())
// Give it a moment to initialize
time.Sleep(100 * time.Millisecond)
ts := Timestamp()
require.True(t, ts >= now-1 && ts <= now+1,
"Initial timestamp should be within ±1 second of current time. Expected: %d±1, got: %d (diff: %d)",
now, ts, int64(ts)-int64(now))
// Wait for next update
time.Sleep(1100 * time.Millisecond)
ts2 := Timestamp()
require.Greater(t, ts2, ts,
"Timestamp should have updated after 1+ seconds. Initial: %d, after 1s: %d",
ts, ts2)
currentTime := uint32(time.Now().Unix())
require.True(t, ts2 >= now && ts2 <= currentTime+1,
"Updated timestamp should be between test start (%d) and current time (%d), got: %d",
now, currentTime, ts2)
}
func Test_StopTimeStampUpdater(t *testing.T) {
timerTestMu.Lock()
defer timerTestMu.Unlock()
StartTimeStampUpdater()
// Get initial timestamp
time.Sleep(100 * time.Millisecond)
initial := Timestamp()
StopTimeStampUpdater()
// Verify it stops updating
time.Sleep(2 * time.Second)
final := Timestamp()
currentTime := uint32(time.Now().Unix())
require.Equal(t, initial, final,
"Timestamp should not change after stopping updater. Stopped at: %d, checked at: %d (wall time: %d)",
initial, final, currentTime)
}
func Benchmark_CalculateTimestamp(b *testing.B) {
timerTestMu.Lock()
defer timerTestMu.Unlock()
StartTimeStampUpdater()
defer StopTimeStampUpdater()
b.Run("fiber", func(bb *testing.B) {
bb.ReportAllocs()
bb.ResetTimer()
for n := 0; n < bb.N; n++ {
_ = Timestamp()
}
})
b.Run("default", func(bb *testing.B) {
bb.ReportAllocs()
bb.ResetTimer()
for n := 0; n < bb.N; n++ {
_ = uint32(time.Now().Unix())
}
})
// Simplified asserted benchmarks - measure the realistic cost including validation
b.Run("fiber_asserted", func(bb *testing.B) {
bb.ReportAllocs()
bb.ResetTimer()
for n := 0; n < bb.N; n++ {
res := Timestamp()
expected := uint32(time.Now().Unix())
checkTimeStamp(bb, expected, res)
}
})
b.Run("default_asserted", func(bb *testing.B) {
bb.ReportAllocs()
bb.ResetTimer()
for n := 0; n < bb.N; n++ {
expected := uint32(time.Now().Unix())
res := uint32(time.Now().Unix())
checkTimeStamp(bb, expected, res)
}
})
}
func Test_StartStopRepeat(t *testing.T) {
timerTestMu.Lock()
defer timerTestMu.Unlock()
StartTimeStampUpdater()
StopTimeStampUpdater()
StartTimeStampUpdater()
defer StopTimeStampUpdater()
time.Sleep(50 * time.Millisecond)
ts := Timestamp()
require.NotZero(t, ts)
}
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