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cmd/compile/internal/types2: list errors by default in TestManual

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TestManual is used for debugging; in this case we usually want to
see error messages reported rather than checked against ERROR comments
in the provided files. Make this the default. Use the new -verify
flag to verify reported errors against ERROR comments.

With this change we cannot get an error list for the non-manual
tests, but that is usually not useful anyway because there are
usually many errors in those test files. Run those tests manually
instead.

Also, corrected -lang flag synopsys: it applies to all tests, not
just TestManual.

Change-Id: I56e0ea0583840fc3ea150d9ccfc330370b66191c
Reviewed-on: https://go-review.googlesource.com/c/go/+/315729
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This commit is contained in:
Robert Griesemer 2021-04-30 10:20:38 -07:00
parent c55d5c887e
commit 95c5f4da80
1 changed files with 12 additions and 11 deletions
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23
src/cmd/compile/internal/types2/check_test.go
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@ -40,9 +40,9 @@ import (
)
var (
haltOnError = flag.Bool("halt", false, "halt on error")
listErrors = flag.Bool("errlist", false, "list errors")
goVersion = flag.String("lang", "", "Go language version (e.g. \"go1.12\") for TestManual")
haltOnError = flag.Bool("halt", false, "halt on error")
verifyErrors = flag.Bool("verify", false, "verify errors (rather than list them) in TestManual")
goVersion = flag.String("lang", "", "Go language version (e.g. \"go1.12\")")
)
func parseFiles(t *testing.T, filenames []string, mode syntax.Mode) ([]*syntax.File, []error) {
@ -96,7 +96,7 @@ func asGoVersion(s string) string {
return ""
}
func checkFiles(t *testing.T, filenames []string, goVersion string, colDelta uint, trace bool) {
func checkFiles(t *testing.T, filenames []string, goVersion string, colDelta uint, manual bool) {
if len(filenames) == 0 {
t.Fatal("no source files")
}
@ -118,7 +118,8 @@ func checkFiles(t *testing.T, filenames []string, goVersion string, colDelta uin
goVersion = asGoVersion(pkgName)
}
if *listErrors && len(errlist) > 0 {
listErrors := manual && !*verifyErrors
if listErrors && len(errlist) > 0 {
t.Errorf("--- %s:", pkgName)
for _, err := range errlist {
t.Error(err)
@ -132,13 +133,13 @@ func checkFiles(t *testing.T, filenames []string, goVersion string, colDelta uin
if len(filenames) == 1 && strings.HasSuffix(filenames[0], "importC.src") {
conf.FakeImportC = true
}
conf.Trace = trace
conf.Trace = manual && testing.Verbose()
conf.Importer = defaultImporter()
conf.Error = func(err error) {
if *haltOnError {
defer panic(err)
}
if *listErrors {
if listErrors {
t.Error(err)
return
}
@ -146,7 +147,7 @@ func checkFiles(t *testing.T, filenames []string, goVersion string, colDelta uin
}
conf.Check(pkgName, files, nil)
if *listErrors {
if listErrors {
return
}
@ -244,8 +245,8 @@ func checkFiles(t *testing.T, filenames []string, goVersion string, colDelta uin
//
// go test -run Manual -- foo.go bar.go
//
// To get an error list rather than having the test check against
// ERROR comments in the input files, provide the -errlist flag.
// Provide the -verify flag to verify errors against ERROR comments in
// the input files rather than having a list of errors reported.
// The accepted Go language version can be controlled with the -lang flag.
func TestManual(t *testing.T) {
filenames := flag.Args()
@ -254,7 +255,7 @@ func TestManual(t *testing.T) {
}
testenv.MustHaveGoBuild(t)
DefPredeclaredTestFuncs()
checkFiles(t, filenames, *goVersion, 0, testing.Verbose())
checkFiles(t, filenames, *goVersion, 0, true)
}
// TODO(gri) go/types has extra TestLongConstants and TestIndexRepresentability tests