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// Copyright 2018 The gVisor Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package vecnet
import (
"io"
"strings"
"testing"
)
type chunkReader struct {
r io.Reader
n int
}
func (r chunkReader) Read(p []byte) (int, error) {
return r.r.Read(p[:r.n])
}
func TestReadFromSanity(t *testing.T) {
bufs := make(Buffers, 2)
bufs[0] = make([]byte, 10)
bufs[1] = make([]byte, 5)
s := "0123456789ab"
n, err := bufs.ReadFrom(chunkReader{r: strings.NewReader(s), n: 2})
if err != io.EOF {
t.Errorf("ReadFrom() = %v, want %v", err, io.EOF)
}
if int(n) != len(s) {
t.Errorf("ReadFrom() = %d bytes read, want %d", n, len(s))
}
if s1, s2 := string(bufs[0]), string(bufs[1][:2]); s1 != s[:10] || s2 != s[10:] {
t.Errorf("ReadFrom() = (%v, %#v), want (%v, %#v)", s1, s2, s[:10], s[10:])
}
}
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