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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package test
import (
"internal/testenv"
"os"
"path/filepath"
"testing"
)
const aliasSrc = `
package x
type T = int
`
func TestInvalidLang(t *testing.T) {
t.Parallel()
testenv.MustHaveGoBuild(t)
dir := t.TempDir()
src := filepath.Join(dir, "alias.go")
if err := os.WriteFile(src, []byte(aliasSrc), 0644); err != nil {
t.Fatal(err)
}
outfile := filepath.Join(dir, "alias.o")
if testLang(t, "go9.99", src, outfile) == nil {
t.Error("compilation with -lang=go9.99 succeeded unexpectedly")
}
// This test will have to be adjusted if we ever reach 1.99 or 2.0.
if testLang(t, "go1.99", src, outfile) == nil {
t.Error("compilation with -lang=go1.99 succeeded unexpectedly")
}
if testLang(t, "go1.8", src, outfile) == nil {
t.Error("compilation with -lang=go1.8 succeeded unexpectedly")
}
if err := testLang(t, "go1.9", src, outfile); err != nil {
t.Errorf("compilation with -lang=go1.9 failed unexpectedly: %v", err)
}
}
func testLang(t *testing.T, lang, src, outfile string) error {
run := []string{testenv.GoToolPath(t), "tool", "compile", "-p=p", "-lang", lang, "-o", outfile, src}
t.Log(run)
out, err := testenv.Command(t, run[0], run[1:]...).CombinedOutput()
t.Logf("%s", out)
return err
}