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uroot_test.go
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// Copyright 2015-2018 the u-root 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 main
import (
"bytes"
"crypto/sha256"
"fmt"
"io"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"testing"
"github.com/u-root/u-root/pkg/cpio"
"github.com/u-root/u-root/pkg/testutil"
itest "github.com/u-root/u-root/pkg/uroot/initramfs/test"
)
var twocmds = []string{
"github.com/u-root/u-root/cmds/ls",
"github.com/u-root/u-root/cmds/init",
}
var srcmds = []string{
"github.com/u-root/u-root/cmds/ls",
"github.com/u-root/u-root/cmds/init",
"github.com/u-root/u-root/cmds/installcommand",
}
type buildSourceValidator struct {
gopath string
goroot string
env []string
}
func (b buildSourceValidator) Validate(a *cpio.Archive) error {
dir, err := ioutil.TempDir("", "u-root-source-")
if err != nil {
return err
}
defer os.RemoveAll(dir)
// Unpack into dir.
err = cpio.ForEachRecord(a.Reader(), func(r cpio.Record) error {
return cpio.CreateFileInRoot(r, dir, false)
})
if err != nil {
return err
}
goroot := filepath.Join(dir, b.goroot)
gopath := filepath.Join(dir, b.gopath)
// go build ./src/...
c := exec.Command(filepath.Join(goroot, "bin/go"), "build", filepath.Join(gopath, "src/..."))
c.Env = append(b.env,
fmt.Sprintf("GOPATH=%s", gopath),
fmt.Sprintf("GOROOT=%s", goroot))
out, err := c.CombinedOutput()
if err != nil {
return fmt.Errorf("could not build go source %v; output\n%s", err, out)
}
return nil
}
func TestUrootCmdline(t *testing.T) {
samplef, err := ioutil.TempFile("", "u-root-sample-")
if err != nil {
t.Fatal(err)
}
samplef.Close()
defer os.RemoveAll(samplef.Name())
for _, tt := range []struct {
name string
env []string
args []string
err error
validators []itest.ArchiveValidator
}{
{
name: "include one extra file",
args: []string{"-nocmd", "-files=/bin/bash"},
err: nil,
validators: []itest.ArchiveValidator{
itest.HasFile{"bin/bash"},
},
},
{
name: "include multiple extra files",
args: []string{"-nocmd", "-files=/bin/bash", "-files=/bin/ls", fmt.Sprintf("-files=%s", samplef.Name())},
validators: []itest.ArchiveValidator{
itest.HasFile{"bin/bash"},
itest.HasFile{"bin/ls"},
itest.HasFile{samplef.Name()},
},
},
{
name: "include one extra file with rename",
args: []string{"-nocmd", "-files=/bin/bash:bin/bush"},
validators: []itest.ArchiveValidator{
itest.HasFile{"bin/bush"},
},
},
{
name: "hosted source mode",
args: append([]string{"-build=source", "-base=/dev/null", "-defaultsh=", "-initcmd="}, srcmds...),
},
{
name: "hosted bb mode",
args: append([]string{"-build=bb", "-base=/dev/null", "-defaultsh=", "-initcmd="}, twocmds...),
},
{
name: "AMD64 bb build",
env: []string{"GOARCH=amd64"},
args: []string{"-build=bb"},
},
{
name: "AMD64 source build",
env: []string{"GOARCH=amd64"},
args: []string{"-build=source"},
validators: []itest.ArchiveValidator{
buildSourceValidator{
goroot: "/go",
gopath: ".",
env: []string{"GOARCH=amd64"},
},
},
},
{
name: "ARM7 bb build",
env: []string{"GOARCH=arm", "GOARM=7"},
args: []string{"-build=bb"},
},
{
name: "ARM64 bb build",
env: []string{"GOARCH=arm64"},
args: []string{"-build=bb"},
},
{
name: "Power 64bit bb build",
env: []string{"GOARCH=ppc64le"},
args: []string{"-build=bb"},
},
} {
t.Run(tt.name, func(t *testing.T) {
delFiles := true
f, sum1 := buildIt(t, tt.args, tt.env, tt.err)
defer func() {
if delFiles {
os.RemoveAll(f.Name())
}
}()
a, err := itest.ReadArchive(f.Name())
if err != nil {
t.Fatal(err)
}
for _, v := range tt.validators {
if err := v.Validate(a); err != nil {
t.Errorf("validator failed: %v / archive:\n%s", err, a)
}
}
f2, sum2 := buildIt(t, tt.args, tt.env, tt.err)
defer func() {
if delFiles {
os.RemoveAll(f2.Name())
}
}()
if !bytes.Equal(sum1, sum2) {
delFiles = false
t.Errorf("not reproducible, hashes don't match")
t.Errorf("env: %v args: %v", tt.env, tt.args)
t.Errorf("file1: %v file2: %v", f.Name(), f2.Name())
}
})
}
}
func buildIt(t *testing.T, args, env []string, want error) (*os.File, []byte) {
f, err := ioutil.TempFile("", "u-root-")
if err != nil {
t.Fatal(err)
}
arg := append([]string{"-o", f.Name()}, args...)
c := testutil.Command(t, arg...)
t.Logf("Commandline: %v", arg)
c.Env = append(c.Env, env...)
if out, err := c.CombinedOutput(); err != want {
t.Fatalf("Error: %v\nOutput:\n%s", err, out)
} else if err != nil {
h1 := sha256.New()
if _, err := io.Copy(h1, f); err != nil {
t.Fatal()
}
return f, h1.Sum(nil)
}
return f, nil
}
func TestMain(m *testing.M) {
testutil.Run(m, main)
}