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cmd/go: avoid passing testing.T to isCaseSensitive and goVersion

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The previous implementation of isCaseSensitive called t.Fatalf in the
wrong place, causing tests after the first to proceed past an error
determining case-sensitivity. That could lead to confusing errors.

(Moreover, I would like to try to disentangle the script engine from
testing.T so that I can also use it to generate serving contents in
the replacement for vcs-test.golang.org.)

The implementation of goVersion called ts.fatalf, which is probably
fine but prevents the script environment from being computed outside
of a test, as we might want to do for debugging and other scripting.

For #27494.

Change-Id: Ibfee0704523fdcd6174b544ff84267216435025b
Reviewed-on: https://go-review.googlesource.com/c/go/+/419874
Run-TryBot: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Auto-Submit: Bryan Mills <bcmills@google.com>
This commit is contained in:
Bryan C. Mills 2022-07-19 15:55:01 -04:00 committed by Gopher Robot
parent e64c87157d
commit 741ab7e819
1 changed files with 21 additions and 11 deletions
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32
src/cmd/go/script_test.go
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@ -101,7 +101,7 @@ func TestScript(t *testing.T) {
// A testScript holds execution state for a single test script.
type testScript struct {
t *testing.T
t testing.TB
ctx context.Context
cancel context.CancelFunc
gracePeriod time.Duration
@ -161,6 +161,10 @@ func (ts *testScript) setup() {
ts.check(os.MkdirAll(filepath.Join(ts.workdir, "tmp"), 0777))
ts.check(os.MkdirAll(filepath.Join(ts.workdir, "gopath/src"), 0777))
ts.cd = filepath.Join(ts.workdir, "gopath/src")
version, err := goVersion()
if err != nil {
ts.t.Fatal(err)
}
ts.env = []string{
"WORK=" + ts.workdir, // must be first for ts.abbrev
pathEnvName() + "=" + testBin + string(filepath.ListSeparator) + os.Getenv(pathEnvName()),
@ -188,7 +192,7 @@ func (ts *testScript) setup() {
"PWD=" + ts.cd,
tempEnvName() + "=" + filepath.Join(ts.workdir, "tmp"),
"devnull=" + os.DevNull,
"goversion=" + goVersion(ts),
"goversion=" + version,
"CMDGO_TEST_RUN_MAIN=true",
}
if testenv.Builder() != "" || os.Getenv("GIT_TRACE_CURL") == "1" {
@ -231,13 +235,13 @@ func (ts *testScript) setup() {
}
// goVersion returns the current Go version.
func goVersion(ts *testScript) string {
func goVersion() (string, error) {
tags := build.Default.ReleaseTags
version := tags[len(tags)-1]
if !regexp.MustCompile(`^go([1-9][0-9]*)\.(0|[1-9][0-9]*)$`).MatchString(version) {
ts.fatalf("invalid go version %q", version)
return "", fmt.Errorf("invalid go version %q", version)
}
return version[2:]
return version[2:], nil
}
var execCache par.Cache
@ -393,7 +397,10 @@ Script:
case "symlink":
ok = testenv.HasSymlink()
case "case-sensitive":
ok = isCaseSensitive(ts.t)
ok, err = isCaseSensitive()
if err != nil {
ts.fatalf("%v", err)
}
case "trimpath":
if info, _ := debug.ReadBuildInfo(); info == nil {
ts.fatalf("missing build info")
@ -476,19 +483,22 @@ Script:
var (
onceCaseSensitive sync.Once
caseSensitive bool
caseSensitiveErr error
)
func isCaseSensitive(t *testing.T) bool {
func isCaseSensitive() (bool, error) {
onceCaseSensitive.Do(func() {
tmpdir, err := os.MkdirTemp("", "case-sensitive")
if err != nil {
t.Fatal("failed to create directory to determine case-sensitivity:", err)
caseSensitiveErr = fmt.Errorf("failed to create directory to determine case-sensitivity: %w", err)
return
}
defer os.RemoveAll(tmpdir)
fcap := filepath.Join(tmpdir, "FILE")
if err := os.WriteFile(fcap, []byte{}, 0644); err != nil {
t.Fatal("error writing file to determine case-sensitivity:", err)
caseSensitiveErr = fmt.Errorf("error writing file to determine case-sensitivity: %w", err)
return
}
flow := filepath.Join(tmpdir, "file")
@ -501,11 +511,11 @@ func isCaseSensitive(t *testing.T) bool {
caseSensitive = true
return
default:
t.Fatal("unexpected error reading file when determining case-sensitivity:", err)
caseSensitiveErr = fmt.Errorf("unexpected error reading file when determining case-sensitivity: %w", err)
}
})
return caseSensitive
return caseSensitive, caseSensitiveErr
}
// scriptCmds are the script command implementations.