cmd/vet: remove -test flag

-test flag is a testing only flag that enables all vet checks. It was needed
because there was no way to run all vet checks in a single command
invocation. However it is possible to do this now by combining -all and -shadow
flags.

Also a recently added -tests flag is similarly named, having both -test and
-tests can be confusing.

Change-Id: Ie5bacbe0bef5c8409eeace46f16141fa4e782c32
Reviewed-on: https://go-review.googlesource.com/20006
Reviewed-by: Rob Pike <r@golang.org>
Run-TryBot: Rob Pike <r@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/vet/doc.go

@@ -198,7 +198,5 @@ These flags configure the behavior of vet:
 		For more information, see the discussion of the -printf flag.
 	-shadowstrict
 		Whether to be strict about shadowing; can be noisy.
-	-test
-		For testing only: sets -all and -shadow.
 */
 package main // import "golang.org/x/tools/cmd/vet"

src/cmd/vet/main.go

@@ -25,7 +25,6 @@ import (
 
 var (
 	verbose = flag.Bool("v", false, "verbose")
-	testFlag = flag.Bool("test", false, "for testing only: sets -all and -shadow")
 	tags    = flag.String("tags", "", "comma-separated list of build tags to apply when parsing")
 	tagList = []string{} // exploded version of tags flag; set in main
 )
@@ -116,9 +115,6 @@ func (ts triState) IsBoolFlag() bool {
 
 // vet tells whether to report errors for the named check, a flag name.
 func vet(name string) bool {
-	if *testFlag {
-		return true
-	}
 	return report[name].isTrue()
 }
 

src/cmd/vet/vet_test.go

@@ -65,7 +65,8 @@ func Vet(t *testing.T, files []string) {
 	flags := []string{
 		"./" + binary,
 		"-printfuncs=Warn:1,Warnf:1",
-		"-test", // TODO: Delete once -shadow is part of -all.
+		"-all",
+		"-shadow",
 	}
 	cmd := exec.Command(errchk, append(flags, files...)...)
 	if !run(cmd, t) {