121 lines
2 KiB
Go
121 lines
2 KiB
Go
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package ratelimit
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import (
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"context"
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"sync"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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"golang.org/x/sync/errgroup"
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)
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func TestNoRateLimit(t *testing.T) {
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limit := NewLimiter(1, 0)
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ctx := context.Background()
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require.NoError(t, limit.Acquire(ctx))
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require.NoError(t, limit.Acquire(ctx))
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}
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func TestBlockedRateLimit(t *testing.T) {
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limit := NewLimiter(0, time.Minute)
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ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond)
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defer cancel()
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err := limit.Acquire(ctx)
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require.Equal(t, context.DeadlineExceeded, err)
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}
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func TestSimpleLimitCancel(t *testing.T) {
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limit := NewLimiter(1, time.Minute)
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ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond)
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defer cancel()
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require.NoError(t, limit.Acquire(ctx))
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err := limit.Acquire(ctx)
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require.Equal(t, context.DeadlineExceeded, err)
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}
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func TestStressBlocking(t *testing.T) {
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const (
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N = 100
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G = 100
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)
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limit := NewLimiter(N, time.Millisecond*10)
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var eg errgroup.Group
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for i := 0; i < G; i++ {
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eg.Go(func() error {
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for j := 0; j < N; j++ {
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if err := limit.Acquire(context.Background()); err != nil {
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return err
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}
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}
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return nil
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})
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}
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require.NoError(t, eg.Wait())
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}
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func TestStressNoBlocking(t *testing.T) {
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const (
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N = 100
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G = 100
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)
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limit := NewLimiter(N, time.Millisecond*10)
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var eg errgroup.Group
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for i := 0; i < G; i++ {
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eg.Go(func() error {
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for j := 0; j < N; j++ {
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if err := limit.Acquire(context.Background()); err != nil {
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return err
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}
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time.Sleep(time.Millisecond * 11)
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}
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return nil
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})
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}
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require.NoError(t, eg.Wait())
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}
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func BenchmarkNoBlocking(b *testing.B) {
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b.ReportAllocs()
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b.SetBytes(1)
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limit := NewLimiter(1, 0)
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ctx := context.Background()
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b.RunParallel(func(pb *testing.PB) {
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for pb.Next() {
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if err := limit.Acquire(ctx); err != nil {
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b.Errorf("acquire failed: %v", err)
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}
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}
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})
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}
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func BenchmarkReferenceMutex(b *testing.B) {
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var mu sync.Mutex
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var j int
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for i := 0; i < b.N; i++ {
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mu.Lock()
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j++
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mu.Unlock()
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}
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}
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