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14ab998f95
A //go:debug line mentioning an unknown or retired setting should be diagnosed as making the program invalid. Do that. We agreed on this in the proposal but I forgot to implement it. Change-Id: Ie69072a1682d4eeb6866c02adbbb426f608567c4 Reviewed-on: https://go-review.googlesource.com/c/go/+/476280 Run-TryBot: Russ Cox <rsc@golang.org> Reviewed-by: Bryan Mills <bcmills@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
62 lines
1.4 KiB
Go
62 lines
1.4 KiB
Go
// 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/godebug"
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"internal/testenv"
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"os"
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"os/exec"
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"testing"
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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 MustSupportFeatureDetection(t *testing.T) {
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// TODO: add platforms that do not have CPU feature detection support.
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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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if err != nil {
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t.Fatalf("%s with %s: run failed: %v output:\n%s\n",
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test, env, err, string(output))
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}
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}
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func TestDisableAllCapabilities(t *testing.T) {
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MustSupportFeatureDetection(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 godebug.New("#cpu.all").Value() != "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 := false
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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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