// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cpu_test
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import (
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. "internal/cpu"
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"internal/testenv"
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"os"
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"os/exec"
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"runtime"
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"strings"
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"testing"
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)
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func TestMinimalFeatures(t *testing.T) {
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if runtime.GOARCH == "arm64" {
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switch runtime.GOOS {
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case "linux", "android":
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default:
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t.Skipf("%s/%s is not supported", runtime.GOOS, runtime.GOARCH)
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}
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}
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for _, o := range Options {
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if o.Required && !*o.Feature {
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t.Errorf("%v expected true, got false", o.Name)
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}
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}
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}
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func MustHaveDebugOptionsSupport(t *testing.T) {
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if !DebugOptions {
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t.Skipf("skipping test: cpu feature options not supported by OS")
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}
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}
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func runDebugOptionsTest(t *testing.T, test string, options string) {
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MustHaveDebugOptionsSupport(t)
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testenv.MustHaveExec(t)
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env := "GODEBUG=" + options
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cmd := exec.Command(os.Args[0], "-test.run="+test)
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cmd.Env = append(cmd.Env, env)
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output, err := cmd.CombinedOutput()
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lines := strings.Fields(string(output))
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lastline := lines[len(lines)-1]
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got := strings.TrimSpace(lastline)
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want := "PASS"
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if err != nil || got != want {
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t.Fatalf("%s with %s: want %s, got %v", test, env, want, got)
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}
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}
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func TestDisableAllCapabilities(t *testing.T) {
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runDebugOptionsTest(t, "TestAllCapabilitiesDisabled", "cpu.all=off")
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}
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func TestAllCapabilitiesDisabled(t *testing.T) {
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MustHaveDebugOptionsSupport(t)
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if os.Getenv("GODEBUG") != "cpu.all=off" {
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t.Skipf("skipping test: GODEBUG=cpu.all=off not set")
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}
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for _, o := range Options {
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want := o.Required
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if got := *o.Feature; got != want {
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t.Errorf("%v: expected %v, got %v", o.Name, want, got)
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}
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}
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}
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