| // Copyright 2017 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 cpu_test |
| |
| import ( |
| . "internal/cpu" |
| "internal/testenv" |
| "os" |
| "os/exec" |
| "runtime" |
| "strings" |
| "testing" |
| ) |
| |
| func TestMinimalFeatures(t *testing.T) { |
| // TODO: maybe do MustSupportFeatureDectection(t) ? |
| if runtime.GOARCH == "arm64" { |
| switch runtime.GOOS { |
| case "linux", "android", "darwin": |
| default: |
| t.Skipf("%s/%s is not supported", runtime.GOOS, runtime.GOARCH) |
| } |
| } |
| |
| for _, o := range Options { |
| if o.Required && !*o.Feature { |
| t.Errorf("%v expected true, got false", o.Name) |
| } |
| } |
| } |
| |
| func MustHaveDebugOptionsSupport(t *testing.T) { |
| if !DebugOptions { |
| t.Skipf("skipping test: cpu feature options not supported by OS") |
| } |
| } |
| |
| func MustSupportFeatureDectection(t *testing.T) { |
| // TODO: add platforms that do not have CPU feature detection support. |
| } |
| |
| func runDebugOptionsTest(t *testing.T, test string, options string) { |
| MustHaveDebugOptionsSupport(t) |
| |
| testenv.MustHaveExec(t) |
| |
| env := "GODEBUG=" + options |
| |
| cmd := exec.Command(os.Args[0], "-test.run="+test) |
| cmd.Env = append(os.Environ(), env) |
| |
| output, err := cmd.CombinedOutput() |
| lines := strings.Fields(string(output)) |
| lastline := lines[len(lines)-1] |
| |
| got := strings.TrimSpace(lastline) |
| want := "PASS" |
| if err != nil || got != want { |
| t.Fatalf("%s with %s: want %s, got %v", test, env, want, got) |
| } |
| } |
| |
| func TestDisableAllCapabilities(t *testing.T) { |
| MustSupportFeatureDectection(t) |
| runDebugOptionsTest(t, "TestAllCapabilitiesDisabled", "cpu.all=off") |
| } |
| |
| func TestAllCapabilitiesDisabled(t *testing.T) { |
| MustHaveDebugOptionsSupport(t) |
| |
| if os.Getenv("GODEBUG") != "cpu.all=off" { |
| t.Skipf("skipping test: GODEBUG=cpu.all=off not set") |
| } |
| |
| for _, o := range Options { |
| want := o.Required |
| if got := *o.Feature; got != want { |
| t.Errorf("%v: expected %v, got %v", o.Name, want, got) |
| } |
| } |
| } |