mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
276 lines
6.5 KiB
Go
276 lines
6.5 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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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/assert"
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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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if serr := ep.Send("new line\n"); serr != 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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err = ep.Close()
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require.ErrorContains(t, err, "unexpected exit code [143]")
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require.Equal(t, 143, ep.exitCode)
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}
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func TestExpectFuncExitFailure(t *testing.T) {
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// tail -x should not exist and return a non-zero exit code
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ep, err := NewExpect("tail", "-x")
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if err != nil {
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t.Fatal(err)
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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(s string) bool {
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return strings.Contains(s, "something entirely unexpected")
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})
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require.ErrorContains(t, err, "unexpected exit code [1]")
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require.Equal(t, 1, ep.exitCode)
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}
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func TestExpectFuncExitFailureStop(t *testing.T) {
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// tail -x should not exist and return a non-zero exit code
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ep, err := NewExpect("tail", "-x")
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if err != nil {
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t.Fatal(err)
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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(s string) bool {
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return strings.Contains(s, "something entirely unexpected")
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})
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require.ErrorContains(t, err, "unexpected exit code [1]")
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exitCode, err := ep.ExitCode()
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require.Equal(t, 1, exitCode)
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require.NoError(t, err)
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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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err = ep.Close()
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require.ErrorContains(t, err, "unexpected exit code [1]")
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exitCode, err = ep.ExitCode()
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require.Equal(t, 1, exitCode)
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require.NoError(t, err)
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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, ExpectedResponse{Value: "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, ExpectedResponse{Value: "..."}); 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(), ExpectedResponse{Value: 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(), ExpectedResponse{Value: "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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err = ep.Close()
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assert.ErrorContains(t, err, "unexpected exit code [130]")
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assert.ErrorContains(t, err, "sleep 100")
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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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func TestExitCodeAfterKill(t *testing.T) {
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ep, err := NewExpect("sleep", "100")
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require.NoError(t, err)
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ep.Signal(os.Kill)
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ep.Wait()
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code, err := ep.ExitCode()
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assert.Equal(t, 137, code)
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assert.NoError(t, err)
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}
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func TestExpectForFailFastCommand(t *testing.T) {
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ep, err := NewExpect("sh", "-c", `echo "curl: (59) failed setting cipher list"; exit 59`)
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require.NoError(t, err)
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_, err = ep.Expect("failed setting cipher list")
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require.NoError(t, err)
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}
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func TestResponseMatchRegularExpr(t *testing.T) {
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testCases := []struct {
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name string
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mockOutput string
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expectedResp ExpectedResponse
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expectMatch bool
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}{
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{
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name: "exact match",
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mockOutput: "hello world",
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expectedResp: ExpectedResponse{Value: "hello world"},
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expectMatch: true,
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},
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{
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name: "not exact match",
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mockOutput: "hello world",
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expectedResp: ExpectedResponse{Value: "hello wld"},
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expectMatch: false,
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},
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{
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name: "match regular expression",
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mockOutput: "hello world",
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expectedResp: ExpectedResponse{Value: `.*llo\sworld`, IsRegularExpr: true},
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expectMatch: true,
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},
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{
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name: "not match regular expression",
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mockOutput: "hello world",
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expectedResp: ExpectedResponse{Value: `.*llo wrld`, IsRegularExpr: true},
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expectMatch: false,
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},
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}
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for _, tc := range testCases {
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tc := tc
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t.Run(tc.name, func(t *testing.T) {
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ep, err := NewExpect("echo", "-n", tc.mockOutput)
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require.NoError(t, err)
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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l, err := ep.ExpectWithContext(ctx, tc.expectedResp)
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if tc.expectMatch {
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require.Equal(t, tc.mockOutput, l)
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} else {
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require.Error(t, err)
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}
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cerr := ep.Close()
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require.NoError(t, cerr)
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})
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}
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}
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