github.com/lingyao2333/mo-zero@v1.4.1/core/limit/tokenlimit_test.go (about)

     1  package limit
     2  
     3  import (
     4  	"context"
     5  	"testing"
     6  	"time"
     7  
     8  	"github.com/alicebob/miniredis/v2"
     9  	"github.com/lingyao2333/mo-zero/core/logx"
    10  	"github.com/lingyao2333/mo-zero/core/stores/redis"
    11  	"github.com/lingyao2333/mo-zero/core/stores/redis/redistest"
    12  	"github.com/stretchr/testify/assert"
    13  )
    14  
    15  func init() {
    16  	logx.Disable()
    17  }
    18  
    19  func TestTokenLimit_WithCtx(t *testing.T) {
    20  	s, err := miniredis.Run()
    21  	assert.Nil(t, err)
    22  
    23  	const (
    24  		total = 100
    25  		rate  = 5
    26  		burst = 10
    27  	)
    28  	l := NewTokenLimiter(rate, burst, redis.New(s.Addr()), "tokenlimit")
    29  	defer s.Close()
    30  
    31  	ctx, cancel := context.WithCancel(context.Background())
    32  	ok := l.AllowCtx(ctx)
    33  	assert.True(t, ok)
    34  
    35  	cancel()
    36  	for i := 0; i < total; i++ {
    37  		ok := l.AllowCtx(ctx)
    38  		assert.False(t, ok)
    39  		assert.False(t, l.monitorStarted)
    40  	}
    41  }
    42  
    43  func TestTokenLimit_Rescue(t *testing.T) {
    44  	s, err := miniredis.Run()
    45  	assert.Nil(t, err)
    46  
    47  	const (
    48  		total = 100
    49  		rate  = 5
    50  		burst = 10
    51  	)
    52  	l := NewTokenLimiter(rate, burst, redis.New(s.Addr()), "tokenlimit")
    53  	s.Close()
    54  
    55  	var allowed int
    56  	for i := 0; i < total; i++ {
    57  		time.Sleep(time.Second / time.Duration(total))
    58  		if i == total>>1 {
    59  			assert.Nil(t, s.Restart())
    60  		}
    61  		if l.Allow() {
    62  			allowed++
    63  		}
    64  
    65  		// make sure start monitor more than once doesn't matter
    66  		l.startMonitor()
    67  	}
    68  
    69  	assert.True(t, allowed >= burst+rate)
    70  }
    71  
    72  func TestTokenLimit_Take(t *testing.T) {
    73  	store, clean, err := redistest.CreateRedis()
    74  	assert.Nil(t, err)
    75  	defer clean()
    76  
    77  	const (
    78  		total = 100
    79  		rate  = 5
    80  		burst = 10
    81  	)
    82  	l := NewTokenLimiter(rate, burst, store, "tokenlimit")
    83  	var allowed int
    84  	for i := 0; i < total; i++ {
    85  		time.Sleep(time.Second / time.Duration(total))
    86  		if l.Allow() {
    87  			allowed++
    88  		}
    89  	}
    90  
    91  	assert.True(t, allowed >= burst+rate)
    92  }
    93  
    94  func TestTokenLimit_TakeBurst(t *testing.T) {
    95  	store, clean, err := redistest.CreateRedis()
    96  	assert.Nil(t, err)
    97  	defer clean()
    98  
    99  	const (
   100  		total = 100
   101  		rate  = 5
   102  		burst = 10
   103  	)
   104  	l := NewTokenLimiter(rate, burst, store, "tokenlimit")
   105  	var allowed int
   106  	for i := 0; i < total; i++ {
   107  		if l.Allow() {
   108  			allowed++
   109  		}
   110  	}
   111  
   112  	assert.True(t, allowed >= burst)
   113  }