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|
package main
import (
"flag"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"regexp"
"strings"
"testing"
)
var crosRootDirFlag = flag.String("crosroot", "", "root dir of the chrome os toolchain")
const mainCc = "main.cc"
const clangX86_64 = "./x86_64-cros-linux-gnu-clang"
const gccX86_64 = "./x86_64-cros-linux-gnu-gcc"
const gccX86_64Eabi = "./x86_64-cros-linux-eabi-gcc"
const gccArmV7 = "./armv7m-cros-linux-gnu-gcc"
const gccArmV7Eabi = "./armv7m-cros-linux-eabi-gcc"
const gccArmV8 = "./armv8m-cros-linux-gnu-gcc"
const gccArmV8Eabi = "./armv8m-cros-linux-eabi-gcc"
const oldHardenedWrapperPathForTest = "/usr/x86_64-pc-linux-gnu/x86_64-cros-linux-gnu/gcc-bin/4.9.x/sysroot_wrapper.hardened"
const oldNonHardenedWrapperPathForTest = "/usr/x86_64-pc-linux-gnu/arm-none-eabi/gcc-bin/4.9.x/sysroot_wrapper"
type testContext struct {
t *testing.T
tempDir string
env []string
cfg *config
}
func withTestContext(t *testing.T, work func(ctx *testContext)) {
t.Parallel()
tempDir, err := ioutil.TempDir("", "compiler_wrapper")
if err != nil {
t.Fatalf("Unable to create the temp dir. Error: %s", err)
}
defer os.RemoveAll(tempDir)
ctx := testContext{
t: t,
tempDir: tempDir,
env: nil,
cfg: &config{
oldWrapperPath: "FilledLater",
overrideOldWrapperConfig: true,
},
}
// Note: It's ok to use the hardened wrapper here, as we replace its config
// on each run.
ctx.setOldWrapperPath(oldHardenedWrapperPathForTest)
work(&ctx)
}
var _ env = (*testContext)(nil)
func (ctx *testContext) getenv(key string) string {
for i := len(ctx.env) - 1; i >= 0; i-- {
entry := ctx.env[i]
if strings.HasPrefix(entry, key+"=") {
return entry[len(key)+1:]
}
}
return ""
}
func (ctx *testContext) environ() []string {
return ctx.env
}
func (ctx *testContext) getwd() string {
return ctx.tempDir
}
func (ctx *testContext) must(cmd *command, err error) *command {
if err != nil {
ctx.t.Fatalf("Expected no error, but got %s", err)
}
return cmd
}
func (ctx *testContext) setOldWrapperPath(chrootPath string) {
if *crosRootDirFlag != "" {
ctx.cfg.oldWrapperPath = filepath.Join(*crosRootDirFlag, chrootPath)
} else {
ctx.cfg.oldWrapperPath = ""
}
}
func (ctx *testContext) newCommand(path string, args ...string) *command {
// Create an empty wrapper at the given path.
// Needed as we are resolving symlinks which stats the wrapper file.
ctx.writeFile(path, "")
return &command{
path: path,
args: args,
}
}
func (ctx *testContext) writeFile(fullFileName string, fileContent string) {
if !filepath.IsAbs(fullFileName) {
fullFileName = filepath.Join(ctx.tempDir, fullFileName)
}
if err := os.MkdirAll(filepath.Dir(fullFileName), 0777); err != nil {
ctx.t.Fatal(err)
}
if err := ioutil.WriteFile(fullFileName, []byte(fileContent), 0777); err != nil {
ctx.t.Fatal(err)
}
}
func (ctx *testContext) symlink(oldname string, newname string) {
if err := os.MkdirAll(filepath.Dir(newname), 0777); err != nil {
ctx.t.Fatal(err)
}
if err := os.Symlink(oldname, newname); err != nil {
ctx.t.Fatal(err)
}
}
func verifyPath(cmd *command, expectedRegex string) error {
compiledRegex := regexp.MustCompile(matchFullString(expectedRegex))
if !compiledRegex.MatchString(cmd.path) {
return fmt.Errorf("path does not match %s. Actual %s", expectedRegex, cmd.path)
}
return nil
}
func verifyArgCount(cmd *command, expectedCount int, expectedRegex string) error {
compiledRegex := regexp.MustCompile(matchFullString(expectedRegex))
count := 0
for _, arg := range cmd.args {
if compiledRegex.MatchString(arg) {
count++
}
}
if count != expectedCount {
return fmt.Errorf("expected %d matches for arg %s. All args: %s",
expectedCount, expectedRegex, cmd.args)
}
return nil
}
func verifyArgOrder(cmd *command, expectedRegexes ...string) error {
compiledRegexes := []*regexp.Regexp{}
for _, regex := range expectedRegexes {
compiledRegexes = append(compiledRegexes, regexp.MustCompile(matchFullString(regex)))
}
expectedArgIndex := 0
for _, arg := range cmd.args {
if expectedArgIndex == len(compiledRegexes) {
break
} else if compiledRegexes[expectedArgIndex].MatchString(arg) {
expectedArgIndex++
}
}
if expectedArgIndex != len(expectedRegexes) {
return fmt.Errorf("expected args %s in order. All args: %s",
expectedRegexes, cmd.args)
}
return nil
}
func verifyEnvUpdate(cmd *command, expectedRegex string) error {
compiledRegex := regexp.MustCompile(matchFullString(expectedRegex))
for _, update := range cmd.envUpdates {
if compiledRegex.MatchString(update) {
return nil
}
}
return fmt.Errorf("expected at least one match for env update %s. All env updates: %s",
expectedRegex, cmd.envUpdates)
}
func verifyNoEnvUpdate(cmd *command, expectedRegex string) error {
compiledRegex := regexp.MustCompile(matchFullString(expectedRegex))
updates := cmd.envUpdates
for _, update := range updates {
if compiledRegex.MatchString(update) {
return fmt.Errorf("expected no match for env update %s. All env updates: %s",
expectedRegex, cmd.envUpdates)
}
}
return nil
}
func matchFullString(regex string) string {
return "^" + regex + "$"
}
|
