// Copyright 2018 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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"errors"
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. "internal/cpu"
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"io/ioutil"
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"regexp"
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"testing"
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)
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func getFeatureList() ([]string, error) {
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cpuinfo, err := ioutil.ReadFile("/proc/cpuinfo")
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if err != nil {
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return nil, err
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}
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r := regexp.MustCompile("features\\s*:\\s*(.*)")
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b := r.FindSubmatch(cpuinfo)
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if len(b) < 2 {
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return nil, errors.New("no feature list in /proc/cpuinfo")
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}
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return regexp.MustCompile("\\s+").Split(string(b[1]), -1), nil
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}
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func TestS390XAgainstCPUInfo(t *testing.T) {
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// mapping of linux feature strings to S390X fields
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mapping := make(map[string]*bool)
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for _, option := range Options {
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mapping[option.Name] = option.Feature
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}
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// these must be true on the machines Go supports
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mandatory := make(map[string]bool)
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mandatory["zarch"] = false
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mandatory["eimm"] = false
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mandatory["ldisp"] = false
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mandatory["stfle"] = false
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features, err := getFeatureList()
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if err != nil {
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t.Error(err)
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}
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for _, feature := range features {
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if _, ok := mandatory[feature]; ok {
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mandatory[feature] = true
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}
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if flag, ok := mapping[feature]; ok {
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if !*flag {
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t.Errorf("feature '%v' not detected", feature)
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}
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} else {
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t.Logf("no entry for '%v'", feature)
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}
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}
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for k, v := range mandatory {
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if !v {
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t.Errorf("mandatory feature '%v' not detected", k)
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}
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}
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}
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