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