bbgo/pkg/util/rate_limit_test.go

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package util
import (
"testing"
"time"
"github.com/stretchr/testify/assert"
"golang.org/x/time/rate"
)
func TestNewValidRateLimiter(t *testing.T) {
cases := []struct {
name string
r rate.Limit
b int
hasError bool
}{
{"valid limiter", 0.1, 1, false},
{"zero rate", 0, 1, true},
{"zero burst", 0.1, 0, true},
{"both zero", 0, 0, true},
}
for _, c := range cases {
t.Run(c.name, func(t *testing.T) {
limiter, err := NewValidLimiter(c.r, c.b)
assert.Equal(t, c.hasError, err != nil)
if !c.hasError {
assert.NotNil(t, limiter)
}
})
}
}
func TestShouldDelay(t *testing.T) {
minInterval := time.Second * 3
maxRate := rate.Limit(1 / minInterval.Seconds())
limiter := rate.NewLimiter(maxRate, 1)
assert.Equal(t, time.Duration(0), ShouldDelay(limiter, minInterval))
for i := 0; i < 100; i++ {
assert.True(t, ShouldDelay(limiter, minInterval) > 0)
}
}
func TestParseRateLimitSyntax(t *testing.T) {
var tests = []struct {
desc string
expectedBurst int
expectedRate float64
wantErr bool
}{
{"2+1/5s", 2, 1.0 / 5.0, false},
{"5+1/3m", 5, 1 / 3 * 60.0, false},
{"1m", 1, 1.0 / 60.0, false},
}
for _, test := range tests {
t.Run(test.desc, func(t *testing.T) {
limiter, err := ParseRateLimitSyntax(test.desc)
if test.wantErr {
assert.Error(t, err)
} else if assert.NoError(t, err) {
assert.NotNil(t, limiter)
burst := limiter.Burst()
assert.Equal(t, test.expectedBurst, burst)
limit := limiter.Limit()
assert.InDeltaf(t, test.expectedRate, float64(limit), 0.01, "expected rate %f, got %f", test.expectedRate, limit)
}
})
}
}