func TestPipelineTerminate(t *testing.T) {
sh := gosh.NewShell(t)
defer sh.Cleanup()
for _, d := range []time.Duration{0, time.Hour} {
for _, s := range []os.Signal{os.Interrupt, os.Kill} {
fmt.Println(d, s)
p := gosh.NewPipeline(sh.FuncCmd(sleepFunc, d, 0), sh.FuncCmd(sleepFunc, d, 0))
p.Start()
p.Cmds()[0].AwaitVars("ready")
p.Cmds()[1].AwaitVars("ready")
// Wait for a bit to allow the zero-sleep commands to exit.
time.Sleep(100 * time.Millisecond)
// Terminate should succeed regardless of the exit code, and regardless of
// whether the signal arrived or the processes had already exited.
p.Terminate(s)
}
}
// Terminate should fail if Wait has been called.
z := time.Duration(0)
p := gosh.NewPipeline(sh.FuncCmd(sleepFunc, z, 0), sh.FuncCmd(sleepFunc, z, 0))
p.Run()
setsErr(t, sh, func() { p.Terminate(os.Interrupt) })
}
func TestPipelineSignal(t *testing.T) {
sh := gosh.NewShell(t)
defer sh.Cleanup()
for _, d := range []time.Duration{0, time.Hour} {
for _, s := range []os.Signal{os.Interrupt, os.Kill} {
fmt.Println(d, s)
p := gosh.NewPipeline(sh.FuncCmd(sleepFunc, d, 0), sh.FuncCmd(sleepFunc, d, 0))
p.Start()
p.Cmds()[0].AwaitVars("ready")
p.Cmds()[1].AwaitVars("ready")
// Wait for a bit to allow the zero-sleep commands to exit.
time.Sleep(100 * time.Millisecond)
p.Signal(s)
switch {
case s == os.Interrupt:
// Wait should succeed as long as the exit code was 0, regardless of
// whether the signal arrived or the processes had already exited.
p.Wait()
case d != 0:
// Note: We don't call Wait in the {d: 0, s: os.Kill} case because doing
// so makes the test flaky on slow systems.
setsErr(t, sh, func() { p.Wait() })
}
}
}
// Signal should fail if Wait has been called.
z := time.Duration(0)
p := gosh.NewPipeline(sh.FuncCmd(sleepFunc, z, 0), sh.FuncCmd(sleepFunc, z, 0))
p.Run()
setsErr(t, sh, func() { p.Signal(os.Interrupt) })
}
func TestPipelineDifferentShells(t *testing.T) {
sh1 := gosh.NewShell(t)
defer sh1.Cleanup()
sh2 := gosh.NewShell(t)
defer sh2.Cleanup()
setsErr(t, sh1, func() { gosh.NewPipeline(sh1.FuncCmd(echoFunc), sh2.FuncCmd(catFunc)) })
setsErr(t, sh2, func() { gosh.NewPipeline(sh2.FuncCmd(echoFunc), sh1.FuncCmd(catFunc)) })
p := gosh.NewPipeline(sh1.FuncCmd(echoFunc))
setsErr(t, sh1, func() { p.PipeStdout(sh2.FuncCmd(catFunc)) })
p = gosh.NewPipeline(sh1.FuncCmd(echoFunc))
setsErr(t, sh1, func() { p.PipeStderr(sh2.FuncCmd(catFunc)) })
p = gosh.NewPipeline(sh1.FuncCmd(echoFunc))
setsErr(t, sh1, func() { p.PipeCombinedOutput(sh2.FuncCmd(catFunc)) })
}
func TestPipeline(t *testing.T) {
sh := gosh.NewShell(t)
defer sh.Cleanup()
echo := sh.FuncCmd(echoFunc)
echo.Args = append(echo.Args, "foo")
replace := sh.FuncCmd(replaceFunc, byte('f'), byte('Z'))
cat := sh.FuncCmd(catFunc)
p := gosh.NewPipeline(echo, replace, cat)
eq(t, p.Stdout(), "Zoo\n")
eq(t, p.Clone().Stdout(), "Zoo\n")
// Try piping only stdout.
p = gosh.NewPipeline(sh.FuncCmd(writeFunc, true, true))
p.PipeStdout(sh.FuncCmd(replaceFunc, byte('A'), byte('Z')))
eq(t, p.Stdout(), "ZZ")
eq(t, p.Clone().Stdout(), "ZZ")
// Try piping only stderr.
p = gosh.NewPipeline(sh.FuncCmd(writeFunc, true, true))
p.PipeStderr(sh.FuncCmd(replaceFunc, byte('B'), byte('Z')))
eq(t, p.Stdout(), "ZZ")
eq(t, p.Clone().Stdout(), "ZZ")
// Try piping both stdout and stderr.
p = gosh.NewPipeline(sh.FuncCmd(writeFunc, true, true))
p.PipeCombinedOutput(sh.FuncCmd(catFunc))
// Note, we can't assume any particular ordering of stdout and stderr, so we
// simply check the length of the combined output.
eq(t, len(p.Stdout()), 4)
eq(t, len(p.Clone().Stdout()), 4)
// Try piping combinations.
p = gosh.NewPipeline(sh.FuncCmd(writeFunc, true, true))
p.PipeStderr(sh.FuncCmd(replaceFunc, byte('B'), byte('x')))
p.PipeStdout(sh.FuncCmd(replaceFunc, byte('x'), byte('Z')))
p.PipeStdout(sh.FuncCmd(catFunc))
eq(t, p.Stdout(), "ZZ")
eq(t, p.Clone().Stdout(), "ZZ")
}
func TestPipelineClosedPipe(t *testing.T) {
sh := gosh.NewShell(t)
defer sh.Cleanup()
writeLoop, readLine := sh.FuncCmd(writeLoopFunc), sh.FuncCmd(readFunc)
// WriteLoop finishes because it gets a closed pipe write error after readLine
// finishes. Note that the closed pipe error is ignored.
p := gosh.NewPipeline(writeLoop, readLine)
eq(t, p.Stdout(), "")
ok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
p = p.Clone()
eq(t, p.Stdout(), "")
ok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
}
func TestPipelineCmdFailure(t *testing.T) {
sh := gosh.NewShell(t)
defer sh.Cleanup()
cat := sh.FuncCmd(catFunc)
exit1 := sh.FuncCmd(exitFunc, 1)
writeLoop := sh.FuncCmd(writeLoopFunc)
echoFoo := sh.FuncCmd(echoFunc)
echoFoo.Args = append(echoFoo.Args, "foo")
// Exit1 fails, and cat finishes with success since it sees an EOF.
p := gosh.NewPipeline(exit1.Clone(), cat.Clone())
setsErr(t, sh, p.Run)
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
p = p.Clone()
setsErr(t, sh, p.Run)
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
// Exit1 fails, and echoFoo finishes with success since it ignores stdin.
p = gosh.NewPipeline(exit1.Clone(), echoFoo.Clone())
setsErr(t, sh, p.Run)
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
p = p.Clone()
setsErr(t, sh, p.Run)
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
// Exit1 fails, causing writeLoop to finish and succeed.
p = gosh.NewPipeline(writeLoop.Clone(), exit1.Clone())
setsErr(t, sh, p.Run)
ok(t, p.Cmds()[0].Err)
nok(t, p.Cmds()[1].Err)
p = p.Clone()
setsErr(t, sh, p.Run)
ok(t, p.Cmds()[0].Err)
nok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
// Same tests, but allowing the exit error from exit1.
exit1.ExitErrorIsOk = true
// Exit1 fails, and cat finishes with success since it sees an EOF.
p = gosh.NewPipeline(exit1.Clone(), cat.Clone())
eq(t, p.Stdout(), "")
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
p = p.Clone()
eq(t, p.Stdout(), "")
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
// Exit1 fails, and echoFoo finishes with success since it ignores stdin.
p = gosh.NewPipeline(exit1.Clone(), echoFoo.Clone())
eq(t, p.Stdout(), "foo\n")
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
p = p.Clone()
eq(t, p.Stdout(), "foo\n")
nok(t, p.Cmds()[0].Err)
ok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
// Exit1 fails, causing writeLoop to finish and succeed.
p = gosh.NewPipeline(writeLoop.Clone(), exit1.Clone())
eq(t, p.Stdout(), "")
ok(t, p.Cmds()[0].Err)
nok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
p = p.Clone()
eq(t, p.Stdout(), "")
ok(t, p.Cmds()[0].Err)
nok(t, p.Cmds()[1].Err)
ok(t, sh.Err)
}