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v2ray-core/common/buf/buffered_writer_test.go

55 lines
1.1 KiB

package buf_test
import (
"crypto/rand"
"testing"
"v2ray.com/core/common"
. "v2ray.com/core/common/buf"
. "v2ray.com/ext/assert"
)
func TestBufferedWriter(t *testing.T) {
assert := With(t)
content := New()
writer := NewBufferedWriter(content)
assert(writer.IsBuffered(), IsTrue)
payload := make([]byte, 16)
nBytes, err := writer.Write(payload)
assert(nBytes, Equals, 16)
assert(err, IsNil)
assert(content.IsEmpty(), IsTrue)
assert(writer.SetBuffered(false), IsNil)
assert(content.Len(), Equals, 16)
}
func TestBufferedWriterLargePayload(t *testing.T) {
assert := With(t)
content := NewLocal(128 * 1024)
writer := NewBufferedWriter(content)
assert(writer.IsBuffered(), IsTrue)
payload := make([]byte, 64*1024)
common.Must2(rand.Read(payload))
nBytes, err := writer.Write(payload[:512])
assert(nBytes, Equals, 512)
assert(err, IsNil)
assert(content.IsEmpty(), IsTrue)
nBytes, err = writer.Write(payload[512:])
assert(err, IsNil)
assert(writer.Flush(), IsNil)
assert(nBytes, Equals, 64*1024-512)
assert(content.Bytes(), Equals, payload)
}