mirror of https://github.com/knative/func.git
136 lines
3.3 KiB
Go
136 lines
3.3 KiB
Go
package e2e
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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"os/exec"
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"strings"
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"testing"
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"time"
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"github.com/hinshun/vt10x"
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)
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type TestShellInteractiveCmdRunner struct {
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TestShell *TestShellCmdRunner
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T *testing.T
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// Sleep interval between each subcommand
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commandSleepInterval time.Duration
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// Sleep interval after last command completion.
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// Required time to give to process to complete before EOF
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completionSleepInterval time.Duration
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// Timeout before kill the cmd in case of some failure
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completionTimeout time.Duration
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}
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func NewTestShellInteractiveCmdRunner(t *testing.T) *TestShellInteractiveCmdRunner {
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testShell := NewKnFuncShellCli(t)
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return &TestShellInteractiveCmdRunner{
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TestShell: testShell,
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T: t,
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commandSleepInterval: time.Second * 1,
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completionSleepInterval: time.Second * 2,
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completionTimeout: time.Second * 15,
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}
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}
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// Prepare creates a go function used to start kn func (binary) that requires user interaction such as `func config command`
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func (f *TestShellInteractiveCmdRunner) PrepareRun(funcCommand ...string) func(args ...string) TestShellCmdResult {
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return func(userInput ...string) TestShellCmdResult {
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// Prepare Command args
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finalArgs := f.TestShell.BinaryArgs
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if finalArgs == nil {
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finalArgs = funcCommand
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} else if funcCommand != nil {
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finalArgs = append(finalArgs, funcCommand...)
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}
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if f.TestShell.ShouldDumpCmdLine {
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f.T.Log(f.TestShell.Binary, strings.Join(finalArgs, " "))
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}
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// Prepare terminal emulator
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c, _, err := vt10x.NewVT10XConsole()
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if err != nil {
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f.T.Fatal(err)
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}
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defer c.Close()
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// Prepare and start command on terminal emulator
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var stderr bytes.Buffer
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var stdout bytes.Buffer
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cmd := exec.Command(f.TestShell.Binary, finalArgs...)
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cmd.Stdin = c.Tty()
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cmd.Stdout = io.MultiWriter(c.Tty(), &stdout)
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cmd.Stderr = io.MultiWriter(c.Tty(), &stderr)
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if f.TestShell.SourceDir != "" {
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cmd.Dir = f.TestShell.SourceDir
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}
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cmd.Env = append(os.Environ(), f.TestShell.Env...)
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err = cmd.Start()
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if err != nil {
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f.T.Fatalf("error on start command: %v\n", err)
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}
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// Monitor kn func command completion
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doneCh := make(chan error, 1)
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go func() {
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_, err := c.ExpectEOF()
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doneCh <- err
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}()
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// Input user entries on Terminal
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for _, subcmd := range userInput {
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time.Sleep(f.commandSleepInterval)
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_, err = c.Send(subcmd)
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if err != nil {
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f.T.Logf("error sending user input comand to console: %v\n", err)
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}
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}
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time.Sleep(f.completionSleepInterval)
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err = c.Tty().Close()
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if err != nil {
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f.T.Logf("error on TTY close: %v\n", err)
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}
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// Wait Command Completion
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select {
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case err = <-doneCh:
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if err != nil {
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fmt.Printf("process completed with error: %v\n", err)
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}
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case <-time.After(f.completionTimeout):
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err = cmd.Process.Kill()
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if err != nil {
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fmt.Printf("error killing process after timeout: %v\n", err)
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} else {
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err = fmt.Errorf("timeout occurred")
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}
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}
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// Collect results
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result := TestShellCmdResult{
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Stdout: stdout.String(),
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Stderr: stderr.String(),
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Error: err,
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}
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if err == nil && f.TestShell.ShouldDumpOnSuccess {
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f.T.Log(result.Stdout)
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}
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if err != nil {
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f.T.Log(result.Stdout)
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f.T.Log(err.Error())
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f.T.Log(result.Stderr)
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}
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return result
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}
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}
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