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v2ray-core/common/io/buffered_writer_test.go

54 lines
1.1 KiB

package io_test
import (
"crypto/rand"
"testing"
"v2ray.com/core/common/alloc"
. "v2ray.com/core/common/io"
"v2ray.com/core/testing/assert"
)
func TestBufferedWriter(t *testing.T) {
assert := assert.On(t)
content := alloc.NewBuffer()
writer := NewBufferedWriter(content)
assert.Bool(writer.Cached()).IsTrue()
payload := make([]byte, 16)
nBytes, err := writer.Write(payload)
assert.Int(nBytes).Equals(16)
assert.Error(err).IsNil()
assert.Bool(content.IsEmpty()).IsTrue()
writer.SetCached(false)
assert.Int(content.Len()).Equals(16)
}
func TestBufferedWriterLargePayload(t *testing.T) {
assert := assert.On(t)
content := alloc.NewLocalBuffer(128 * 1024)
writer := NewBufferedWriter(content)
assert.Bool(writer.Cached()).IsTrue()
payload := make([]byte, 64*1024)
rand.Read(payload)
nBytes, err := writer.Write(payload[:1024])
assert.Int(nBytes).Equals(1024)
assert.Error(err).IsNil()
assert.Bool(content.IsEmpty()).IsTrue()
nBytes, err = writer.Write(payload[1024:])
assert.Error(err).IsNil()
assert.Int(nBytes).Equals(63 * 1024)
assert.Bytes(content.Bytes()).Equals(payload)
}