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27aa60f540
go_android_exec gets the exit status of the process run inside the Android emulator by sending a small shell script that runs the desired command and then prints "exitcode=" followed by the exit code. This is necessary because adb does not reliably pass through the exit status of the subprocess. An old bug about this (https://code.google.com/p/android/issues/detail?id=3254) was closed in 2016 as fixed in Android N (7.0), but it seems that the adb on the Android builder at least still sometimes fails to pass through the exit code. Unfortunately, this workaround has the effect of injecting "exitcode=N" into the output of the subprocess it runs, which messes up tests that are looking for golden output from a subprocess. Fix this by inserting a filter Writer that looks for the final "exitcode=N" and strips it from the exec wrapper's own stdout. For #15919. This will help us in cleaning up "host tests" for #37486. Change-Id: I9859f5b215e0ec4a7e33ada04a1857f3cfaf55ae Reviewed-on: https://go-review.googlesource.com/c/go/+/488975 TryBot-Result: Gopher Robot <gobot@golang.org> Auto-Submit: Austin Clements <austin@google.com> Run-TryBot: Austin Clements <austin@google.com> Reviewed-by: Bryan Mills <bcmills@google.com>
76 lines
2.1 KiB
Go
76 lines
2.1 KiB
Go
// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build !(windows || js || wasip1)
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package main
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import (
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"regexp"
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"strings"
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"testing"
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)
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func TestExitCodeFilter(t *testing.T) {
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// Write text to the filter one character at a time.
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var out strings.Builder
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f, exitStr := newExitCodeFilter(&out)
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// Embed a "fake" exit code in the middle to check that we don't get caught on it.
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pre := "abc" + exitStr + "123def"
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text := pre + exitStr + `1`
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for i := 0; i < len(text); i++ {
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_, err := f.Write([]byte{text[i]})
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if err != nil {
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t.Fatal(err)
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}
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}
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// The "pre" output should all have been flushed already.
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if want, got := pre, out.String(); want != got {
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t.Errorf("filter should have already flushed %q, but flushed %q", want, got)
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}
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code, err := f.Finish()
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if err != nil {
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t.Fatal(err)
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}
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// Nothing more should have been written to out.
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if want, got := pre, out.String(); want != got {
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t.Errorf("want output %q, got %q", want, got)
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}
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if want := 1; want != code {
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t.Errorf("want exit code %d, got %d", want, code)
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}
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}
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func TestExitCodeMissing(t *testing.T) {
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var wantErr *regexp.Regexp
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check := func(text string) {
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t.Helper()
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var out strings.Builder
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f, exitStr := newExitCodeFilter(&out)
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if want := "exitcode="; want != exitStr {
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t.Fatalf("test assumes exitStr will be %q, but got %q", want, exitStr)
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}
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f.Write([]byte(text))
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_, err := f.Finish()
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// We should get a no exit code error
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if err == nil || !wantErr.MatchString(err.Error()) {
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t.Errorf("want error matching %s, got %s", wantErr, err)
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}
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// And it should flush all output (even if it looks
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// like we may be getting an exit code)
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if got := out.String(); text != got {
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t.Errorf("want full output %q, got %q", text, got)
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}
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}
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wantErr = regexp.MustCompile("^no exit code")
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check("abc")
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check("exitcode")
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check("exitcode=")
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check("exitcode=123\n")
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wantErr = regexp.MustCompile("^bad exit code: .* value out of range")
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check("exitcode=999999999999999999999999")
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}
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