57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
|
// Copyright 2018 Google Inc.
|
||
|
//
|
||
|
// 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 tty
|
||
|
|
||
|
import (
|
||
|
"testing"
|
||
|
|
||
|
"gvisor.googlesource.com/gvisor/pkg/abi/linux"
|
||
|
"gvisor.googlesource.com/gvisor/pkg/sentry/context/contexttest"
|
||
|
"gvisor.googlesource.com/gvisor/pkg/sentry/usermem"
|
||
|
)
|
||
|
|
||
|
func TestSimpleMasterToSlave(t *testing.T) {
|
||
|
ld := lineDiscipline{termios: linux.DefaultSlaveTermios}
|
||
|
ctx := contexttest.Context(t)
|
||
|
inBytes := []byte("hello, tty\n")
|
||
|
src := usermem.BytesIOSequence(inBytes)
|
||
|
outBytes := make([]byte, 32)
|
||
|
dst := usermem.BytesIOSequence(outBytes)
|
||
|
|
||
|
// Write to the input queue.
|
||
|
nw, err := ld.inputQueueWrite(ctx, src)
|
||
|
if err != nil {
|
||
|
t.Fatalf("error writing to input queue: %v", err)
|
||
|
}
|
||
|
if nw != int64(len(inBytes)) {
|
||
|
t.Fatalf("wrote wrong length: got %d, want %d", nw, len(inBytes))
|
||
|
}
|
||
|
|
||
|
// Read from the input queue.
|
||
|
nr, err := ld.inputQueueRead(ctx, dst)
|
||
|
if err != nil {
|
||
|
t.Fatalf("error reading from input queue: %v", err)
|
||
|
}
|
||
|
if nr != int64(len(inBytes)) {
|
||
|
t.Fatalf("read wrong length: got %d, want %d", nr, len(inBytes))
|
||
|
}
|
||
|
|
||
|
outStr := string(outBytes[:nr])
|
||
|
inStr := string(inBytes)
|
||
|
if outStr != inStr {
|
||
|
t.Fatalf("written and read strings do not match: got %q, want %q", outStr, inStr)
|
||
|
}
|
||
|
}
|