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// Copyright 2023 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.
//go:build unix
package runtime_test
import (
"internal/testenv"
"os"
"strings"
"testing"
)
func TestCheckFDs(t *testing.T) {
if *flagQuick {
t.Skip("-quick")
}
testenv.MustHaveGoBuild(t)
fdsBin, err := buildTestProg(t, "testfds")
if err != nil {
t.Fatal(err)
}
i, err := os.CreateTemp(t.TempDir(), "fds-input")
if err != nil {
t.Fatal(err)
}
if _, err := i.Write([]byte("stdin")); err != nil {
t.Fatal(err)
}
if err := i.Close(); err != nil {
t.Fatal(err)
}
o, err := os.CreateTemp(t.TempDir(), "fds-output")
if err != nil {
t.Fatal(err)
}
outputPath := o.Name()
if err := o.Close(); err != nil {
t.Fatal(err)
}
env := []string{"TEST_OUTPUT=" + outputPath}
for _, e := range os.Environ() {
if strings.HasPrefix(e, "GODEBUG=") || strings.HasPrefix(e, "GOTRACEBACK=") {
continue
}
env = append(env, e)
}
proc, err := os.StartProcess(fdsBin, []string{fdsBin}, &os.ProcAttr{
Env: env,
Files: []*os.File{},
})
if err != nil {
t.Fatal(err)
}
ps, err := proc.Wait()
if err != nil {
t.Fatal(err)
}
if ps.ExitCode() != 0 {
t.Fatalf("testfds failed: %d", ps.ExitCode())
}
fc, err := os.ReadFile(outputPath)
if err != nil {
t.Fatal(err)
}
if string(fc) != "" {
t.Errorf("unexpected file content, got: %q", string(fc))
}
}
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