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go/types: add -halt flag to ease debugging in test mode

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Specifying -halt in `go test -run Check$ -halt` causes a panic
upon encountering the first error. The stack trace is useful to
determine what code path issued the error.

Change-Id: I2e17e0014ba87505b01786980b98565f468065bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/190257
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Robert Griesemer 2019-08-13 12:56:51 -07:00
parent 8b03a3992b
commit 89f02eb837
1 changed files with 6 additions and 2 deletions
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8
src/go/types/check_test.go
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@ -42,8 +42,9 @@ import (
) )
var ( var (
listErrors = flag.Bool("errlist", false, "list errors") haltOnError = flag.Bool("halt", false, "halt on error")
testFiles = flag.String("files", "", "space-separated list of test files") listErrors = flag.Bool("errlist", false, "list errors")
testFiles = flag.String("files", "", "space-separated list of test files")
) )
// The test filenames do not end in .go so that they are invisible // The test filenames do not end in .go so that they are invisible
@ -262,6 +263,9 @@ func checkFiles(t *testing.T, testfiles []string) {
} }
conf.Importer = importer.Default() conf.Importer = importer.Default()
conf.Error = func(err error) { conf.Error = func(err error) {
if *haltOnError {
defer panic(err)
}
if *listErrors { if *listErrors {
t.Error(err) t.Error(err)
return return