57 lines
1.7 KiB
Go
57 lines
1.7 KiB
Go
// Copyright 2018 The gVisor Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tty
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import (
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"testing"
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"gvisor.googlesource.com/gvisor/pkg/abi/linux"
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"gvisor.googlesource.com/gvisor/pkg/sentry/context/contexttest"
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"gvisor.googlesource.com/gvisor/pkg/sentry/usermem"
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)
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func TestSimpleMasterToSlave(t *testing.T) {
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ld := newLineDiscipline(linux.DefaultSlaveTermios)
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ctx := contexttest.Context(t)
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inBytes := []byte("hello, tty\n")
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src := usermem.BytesIOSequence(inBytes)
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outBytes := make([]byte, 32)
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dst := usermem.BytesIOSequence(outBytes)
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// Write to the input queue.
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nw, err := ld.inputQueueWrite(ctx, src)
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if err != nil {
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t.Fatalf("error writing to input queue: %v", err)
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}
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if nw != int64(len(inBytes)) {
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t.Fatalf("wrote wrong length: got %d, want %d", nw, len(inBytes))
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}
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// Read from the input queue.
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nr, err := ld.inputQueueRead(ctx, dst)
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if err != nil {
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t.Fatalf("error reading from input queue: %v", err)
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}
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if nr != int64(len(inBytes)) {
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t.Fatalf("read wrong length: got %d, want %d", nr, len(inBytes))
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}
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outStr := string(outBytes[:nr])
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inStr := string(inBytes)
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if outStr != inStr {
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t.Fatalf("written and read strings do not match: got %q, want %q", outStr, inStr)
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}
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}
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