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// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ssh
import (
"io"
"testing"
)
var alphabet = []byte("abcdefghijklmnopqrstuvwxyz")
func TestBufferReadwrite(t *testing.T) {
b := newBuffer()
b.write(alphabet[:10])
r, _ := b.Read(make([]byte, 10))
if r != 10 {
t.Fatalf("Expected written == read == 10, written: 10, read %d", r)
}
b = newBuffer()
b.write(alphabet[:5])
r, _ = b.Read(make([]byte, 10))
if r != 5 {
t.Fatalf("Expected written == read == 5, written: 5, read %d", r)
}
b = newBuffer()
b.write(alphabet[:10])
r, _ = b.Read(make([]byte, 5))
if r != 5 {
t.Fatalf("Expected written == 10, read == 5, written: 10, read %d", r)
}
b = newBuffer()
b.write(alphabet[:5])
b.write(alphabet[5:15])
r, _ = b.Read(make([]byte, 10))
r2, _ := b.Read(make([]byte, 10))
if r != 10 || r2 != 5 || 15 != r+r2 {
t.Fatal("Expected written == read == 15")
}
}
func TestBufferClose(t *testing.T) {
b := newBuffer()
b.write(alphabet[:10])
b.eof()
_, err := b.Read(make([]byte, 5))
if err != nil {
t.Fatal("expected read of 5 to not return EOF")
}
b = newBuffer()
b.write(alphabet[:10])
b.eof()
r, err := b.Read(make([]byte, 5))
r2, err2 := b.Read(make([]byte, 10))
if r != 5 || r2 != 5 || err != nil || err2 != nil {
t.Fatal("expected reads of 5 and 5")
}
b = newBuffer()
b.write(alphabet[:10])
b.eof()
r, err = b.Read(make([]byte, 5))
r2, err2 = b.Read(make([]byte, 10))
r3, err3 := b.Read(make([]byte, 10))
if r != 5 || r2 != 5 || r3 != 0 || err != nil || err2 != nil || err3 != io.EOF {
t.Fatal("expected reads of 5 and 5 and 0, with EOF")
}
b = newBuffer()
b.write(make([]byte, 5))
b.write(make([]byte, 10))
b.eof()
r, err = b.Read(make([]byte, 9))
r2, err2 = b.Read(make([]byte, 3))
r3, err3 = b.Read(make([]byte, 3))
r4, err4 := b.Read(make([]byte, 10))
if err != nil || err2 != nil || err3 != nil || err4 != io.EOF {
t.Fatalf("Expected EOF on forth read only, err=%v, err2=%v, err3=%v, err4=%v", err, err2, err3, err4)
}
if r != 9 || r2 != 3 || r3 != 3 || r4 != 0 {
t.Fatal("Expected written == read == 15", r, r2, r3, r4)
}
}