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// Copyright 2022 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 runtime_test
import (
"bytes"
"internal/testenv"
"os"
"os/exec"
"testing"
)
// Test that the generated code for the lock rank graph is up-to-date.
func TestLockRankGenerated(t *testing.T) {
testenv.MustHaveGoRun(t)
cmd := testenv.CleanCmdEnv(testenv.Command(t, testenv.GoToolPath(t), "run", "mklockrank.go"))
want, err := cmd.Output()
if err != nil {
if ee, ok := err.(*exec.ExitError); ok && len(ee.Stderr) > 0 {
t.Fatalf("%v: %v\n%s", cmd, err, ee.Stderr)
}
t.Fatalf("%v: %v", cmd, err)
}
got, err := os.ReadFile("lockrank.go")
if err != nil {
t.Fatal(err)
}
if !bytes.Equal(want, got) {
t.Fatalf("lockrank.go is out of date. Please run go generate.")
}
}