152 lines
3.3 KiB
Go
152 lines
3.3 KiB
Go
// Copyright 2016 The etcd 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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// build !windows
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package expect
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import (
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"context"
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"os"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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)
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func TestExpectFunc(t *testing.T) {
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ep, err := NewExpect("echo", "hello world")
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if err != nil {
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t.Fatal(err)
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}
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wstr := "hello world\r\n"
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l, eerr := ep.ExpectFunc(context.Background(), func(a string) bool { return len(a) > 10 })
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if eerr != nil {
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t.Fatal(eerr)
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}
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if l != wstr {
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t.Fatalf(`got "%v", expected "%v"`, l, wstr)
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}
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if cerr := ep.Close(); cerr != nil {
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t.Fatal(cerr)
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}
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}
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func TestExpectFuncTimeout(t *testing.T) {
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ep, err := NewExpect("tail", "-f", "/dev/null")
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if err != nil {
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t.Fatal(err)
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}
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go func() {
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// It's enough to have "talkative" process to stuck in the infinite loop of reading
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for {
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err := ep.Send("new line\n")
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if err != nil {
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return
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}
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}
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}()
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ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
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defer cancel()
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_, err = ep.ExpectFunc(ctx, func(a string) bool { return false })
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require.ErrorAs(t, err, &context.DeadlineExceeded)
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if err = ep.Stop(); err != nil {
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t.Fatal(err)
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}
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}
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func TestEcho(t *testing.T) {
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ep, err := NewExpect("echo", "hello world")
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if err != nil {
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t.Fatal(err)
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}
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ctx := context.Background()
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l, eerr := ep.ExpectWithContext(ctx, "world")
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if eerr != nil {
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t.Fatal(eerr)
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}
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wstr := "hello world"
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if l[:len(wstr)] != wstr {
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t.Fatalf(`got "%v", expected "%v"`, l, wstr)
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}
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if cerr := ep.Close(); cerr != nil {
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t.Fatal(cerr)
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}
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if _, eerr = ep.ExpectWithContext(ctx, "..."); eerr == nil {
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t.Fatalf("expected error on closed expect process")
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}
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}
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func TestLineCount(t *testing.T) {
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ep, err := NewExpect("printf", "1\n2\n3")
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if err != nil {
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t.Fatal(err)
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}
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wstr := "3"
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l, eerr := ep.ExpectWithContext(context.Background(), wstr)
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if eerr != nil {
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t.Fatal(eerr)
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}
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if l != wstr {
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t.Fatalf(`got "%v", expected "%v"`, l, wstr)
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}
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if ep.LineCount() != 3 {
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t.Fatalf("got %d, expected 3", ep.LineCount())
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}
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if cerr := ep.Close(); cerr != nil {
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t.Fatal(cerr)
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}
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}
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func TestSend(t *testing.T) {
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ep, err := NewExpect("tr", "a", "b")
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if err != nil {
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t.Fatal(err)
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}
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if err := ep.Send("a\r"); err != nil {
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t.Fatal(err)
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}
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if _, err := ep.ExpectWithContext(context.Background(), "b"); err != nil {
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t.Fatal(err)
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}
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if err := ep.Stop(); err != nil {
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t.Fatal(err)
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}
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}
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func TestSignal(t *testing.T) {
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ep, err := NewExpect("sleep", "100")
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if err != nil {
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t.Fatal(err)
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}
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ep.Signal(os.Interrupt)
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donec := make(chan struct{})
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go func() {
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defer close(donec)
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werr := "signal: interrupt"
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if cerr := ep.Close(); cerr == nil || cerr.Error() != werr {
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t.Errorf("got error %v, wanted error %s", cerr, werr)
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}
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}()
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select {
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case <-time.After(5 * time.Second):
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t.Fatalf("signal test timed out")
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case <-donec:
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}
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}
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