clash/common/pool/alloc_test.go

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package pool
import (
"math/rand"
"testing"
"github.com/stretchr/testify/assert"
)
func TestAllocGet(t *testing.T) {
alloc := NewAllocator()
assert.Nil(t, alloc.Get(0))
assert.Equal(t, 1, len(alloc.Get(1)))
assert.Equal(t, 2, len(alloc.Get(2)))
assert.Equal(t, 3, len(alloc.Get(3)))
assert.Equal(t, 4, cap(alloc.Get(3)))
assert.Equal(t, 4, cap(alloc.Get(4)))
assert.Equal(t, 1023, len(alloc.Get(1023)))
assert.Equal(t, 1024, cap(alloc.Get(1023)))
assert.Equal(t, 1024, len(alloc.Get(1024)))
assert.Equal(t, 65536, len(alloc.Get(65536)))
assert.Nil(t, alloc.Get(65537))
}
func TestAllocPut(t *testing.T) {
alloc := NewAllocator()
assert.NotNil(t, alloc.Put(nil), "put nil misbehavior")
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assert.NotNil(t, alloc.Put(make([]byte, 3)), "put elem:3 []bytes misbehavior")
assert.Nil(t, alloc.Put(make([]byte, 4)), "put elem:4 []bytes misbehavior")
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assert.Nil(t, alloc.Put(make([]byte, 1023, 1024)), "put elem:1024 []bytes misbehavior")
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assert.Nil(t, alloc.Put(make([]byte, 65536)), "put elem:65536 []bytes misbehavior")
assert.NotNil(t, alloc.Put(make([]byte, 65537)), "put elem:65537 []bytes misbehavior")
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}
func TestAllocPutThenGet(t *testing.T) {
alloc := NewAllocator()
data := alloc.Get(4)
alloc.Put(data)
newData := alloc.Get(4)
assert.Equal(t, cap(data), cap(newData), "different cap while alloc.Get()")
}
func BenchmarkMSB(b *testing.B) {
for i := 0; i < b.N; i++ {
msb(rand.Int())
}
}