mirror of
https://github.com/vbatts/go-mtree.git
synced 2024-11-22 08:25:38 +00:00
e22043cb86
In certain circumstances (such as the manifest generation of a filesystem as an unprivileged user) it is important to provide hooks that override the default os.* implementation of filesystem-related functions. In order to avoid merging too much code from outside projects (such as umoci) this is implemented by providing FsEval hooks to Walk() and Check(). This allows for users of go-mtree to modify how filesystem checks are done, without compromising the simplicity of go-mtree's code. Signed-off-by: Aleksa Sarai <asarai@suse.de>
459 lines
11 KiB
Go
459 lines
11 KiB
Go
package mtree
|
|
|
|
import (
|
|
"archive/tar"
|
|
"bytes"
|
|
"encoding/json"
|
|
"io"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"testing"
|
|
"time"
|
|
)
|
|
|
|
// simple walk of current directory, and imediately check it.
|
|
// may not be parallelizable.
|
|
func TestCompare(t *testing.T) {
|
|
old, err := Walk(".", nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
new, err := Walk(".", nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
diffs, err := Compare(old, new, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if len(diffs) > 0 {
|
|
t.Errorf("%#v", diffs)
|
|
}
|
|
}
|
|
|
|
func TestCompareModified(t *testing.T) {
|
|
dir, err := ioutil.TempDir("", "test-compare-modified")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
// Create a bunch of objects.
|
|
tmpfile := filepath.Join(dir, "tmpfile")
|
|
if err := ioutil.WriteFile(tmpfile, []byte("some content here"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpdir := filepath.Join(dir, "testdir")
|
|
if err := os.Mkdir(tmpdir, 0755); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpsubfile := filepath.Join(tmpdir, "anotherfile")
|
|
if err := ioutil.WriteFile(tmpsubfile, []byte("some different content"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Walk the current state.
|
|
old, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Overwrite the content in one of the files.
|
|
if err := ioutil.WriteFile(tmpsubfile, []byte("modified content"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Walk the new state.
|
|
new, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Compare.
|
|
diffs, err := Compare(old, new, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// 1 object
|
|
if len(diffs) != 1 {
|
|
t.Errorf("expected the diff length to be 1, got %d", len(diffs))
|
|
for i, diff := range diffs {
|
|
t.Logf("diff[%d] = %#v", i, diff)
|
|
}
|
|
}
|
|
|
|
// These cannot fail.
|
|
tmpfile, _ = filepath.Rel(dir, tmpfile)
|
|
tmpdir, _ = filepath.Rel(dir, tmpdir)
|
|
tmpsubfile, _ = filepath.Rel(dir, tmpsubfile)
|
|
|
|
for _, diff := range diffs {
|
|
switch diff.Path() {
|
|
case tmpsubfile:
|
|
if diff.Type() != Modified {
|
|
t.Errorf("unexpected diff type for %s: %s", diff.Path(), diff.Type())
|
|
}
|
|
|
|
if diff.Diff() == nil {
|
|
t.Errorf("expect to not get nil for .Diff()")
|
|
}
|
|
|
|
old := diff.Old()
|
|
new := diff.New()
|
|
if old == nil || new == nil {
|
|
t.Errorf("expected to get (!nil, !nil) for (.Old, .New), got (%#v, %#v)", old, new)
|
|
}
|
|
default:
|
|
t.Errorf("unexpected diff found: %#v", diff)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCompareMissing(t *testing.T) {
|
|
dir, err := ioutil.TempDir("", "test-compare-missing")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
// Create a bunch of objects.
|
|
tmpfile := filepath.Join(dir, "tmpfile")
|
|
if err := ioutil.WriteFile(tmpfile, []byte("some content here"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpdir := filepath.Join(dir, "testdir")
|
|
if err := os.Mkdir(tmpdir, 0755); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpsubfile := filepath.Join(tmpdir, "anotherfile")
|
|
if err := ioutil.WriteFile(tmpsubfile, []byte("some different content"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Walk the current state.
|
|
old, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Delete the objects.
|
|
if err := os.RemoveAll(tmpfile); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := os.RemoveAll(tmpsubfile); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := os.RemoveAll(tmpdir); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Walk the new state.
|
|
new, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Compare.
|
|
diffs, err := Compare(old, new, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// 3 objects + the changes to '.'
|
|
if len(diffs) != 4 {
|
|
t.Errorf("expected the diff length to be 4, got %d", len(diffs))
|
|
for i, diff := range diffs {
|
|
t.Logf("diff[%d] = %#v", i, diff)
|
|
}
|
|
}
|
|
|
|
// These cannot fail.
|
|
tmpfile, _ = filepath.Rel(dir, tmpfile)
|
|
tmpdir, _ = filepath.Rel(dir, tmpdir)
|
|
tmpsubfile, _ = filepath.Rel(dir, tmpsubfile)
|
|
|
|
for _, diff := range diffs {
|
|
switch diff.Path() {
|
|
case ".":
|
|
// ignore these changes
|
|
case tmpfile, tmpdir, tmpsubfile:
|
|
if diff.Type() != Missing {
|
|
t.Errorf("unexpected diff type for %s: %s", diff.Path(), diff.Type())
|
|
}
|
|
|
|
if diff.Diff() != nil {
|
|
t.Errorf("expect to get nil for .Diff(), got %#v", diff.Diff())
|
|
}
|
|
|
|
old := diff.Old()
|
|
new := diff.New()
|
|
if old == nil || new != nil {
|
|
t.Errorf("expected to get (!nil, nil) for (.Old, .New), got (%#v, %#v)", old, new)
|
|
}
|
|
default:
|
|
t.Errorf("unexpected diff found: %#v", diff)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCompareExtra(t *testing.T) {
|
|
dir, err := ioutil.TempDir("", "test-compare-extra")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
// Walk the current state.
|
|
old, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Create a bunch of objects.
|
|
tmpfile := filepath.Join(dir, "tmpfile")
|
|
if err := ioutil.WriteFile(tmpfile, []byte("some content here"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpdir := filepath.Join(dir, "testdir")
|
|
if err := os.Mkdir(tmpdir, 0755); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpsubfile := filepath.Join(tmpdir, "anotherfile")
|
|
if err := ioutil.WriteFile(tmpsubfile, []byte("some different content"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Walk the new state.
|
|
new, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Compare.
|
|
diffs, err := Compare(old, new, nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// 3 objects + the changes to '.'
|
|
if len(diffs) != 4 {
|
|
t.Errorf("expected the diff length to be 4, got %d", len(diffs))
|
|
for i, diff := range diffs {
|
|
t.Logf("diff[%d] = %#v", i, diff)
|
|
}
|
|
}
|
|
|
|
// These cannot fail.
|
|
tmpfile, _ = filepath.Rel(dir, tmpfile)
|
|
tmpdir, _ = filepath.Rel(dir, tmpdir)
|
|
tmpsubfile, _ = filepath.Rel(dir, tmpsubfile)
|
|
|
|
for _, diff := range diffs {
|
|
switch diff.Path() {
|
|
case ".":
|
|
// ignore these changes
|
|
case tmpfile, tmpdir, tmpsubfile:
|
|
if diff.Type() != Extra {
|
|
t.Errorf("unexpected diff type for %s: %s", diff.Path(), diff.Type())
|
|
}
|
|
|
|
if diff.Diff() != nil {
|
|
t.Errorf("expect to get nil for .Diff(), got %#v", diff.Diff())
|
|
}
|
|
|
|
old := diff.Old()
|
|
new := diff.New()
|
|
if old != nil || new == nil {
|
|
t.Errorf("expected to get (!nil, nil) for (.Old, .New), got (%#v, %#v)", old, new)
|
|
}
|
|
default:
|
|
t.Errorf("unexpected diff found: %#v", diff)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestCompareKeys(t *testing.T) {
|
|
dir, err := ioutil.TempDir("", "test-compare-keys")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
// Create a bunch of objects.
|
|
tmpfile := filepath.Join(dir, "tmpfile")
|
|
if err := ioutil.WriteFile(tmpfile, []byte("some content here"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpdir := filepath.Join(dir, "testdir")
|
|
if err := os.Mkdir(tmpdir, 0755); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpsubfile := filepath.Join(tmpdir, "anotherfile")
|
|
if err := ioutil.WriteFile(tmpsubfile, []byte("aaa"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Walk the current state.
|
|
old, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Overwrite the content in one of the files, but without changing the size.
|
|
if err := ioutil.WriteFile(tmpsubfile, []byte("bbb"), 0666); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Walk the new state.
|
|
new, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Compare.
|
|
diffs, err := Compare(old, new, []Keyword{"size"})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// 0 objects
|
|
if len(diffs) != 0 {
|
|
t.Errorf("expected the diff length to be 0, got %d", len(diffs))
|
|
for i, diff := range diffs {
|
|
t.Logf("diff[%d] = %#v", i, diff)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestTarCompare(t *testing.T) {
|
|
dir, err := ioutil.TempDir("", "test-compare-tar")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
// Create a bunch of objects.
|
|
tmpfile := filepath.Join(dir, "tmpfile")
|
|
if err := ioutil.WriteFile(tmpfile, []byte("some content"), 0644); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpdir := filepath.Join(dir, "testdir")
|
|
if err := os.Mkdir(tmpdir, 0755); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tmpsubfile := filepath.Join(tmpdir, "anotherfile")
|
|
if err := ioutil.WriteFile(tmpsubfile, []byte("aaa"), 0644); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Create a tar-like archive.
|
|
compareFiles := []fakeFile{
|
|
{"./", "", 0700, tar.TypeDir, 100, 0, nil},
|
|
{"tmpfile", "some content", 0644, tar.TypeReg, 100, 0, nil},
|
|
{"testdir/", "", 0755, tar.TypeDir, 100, 0, nil},
|
|
{"testdir/anotherfile", "aaa", 0644, tar.TypeReg, 100, 0, nil},
|
|
}
|
|
|
|
for _, file := range compareFiles {
|
|
path := filepath.Join(dir, file.Name)
|
|
|
|
// Change the time to something known with nanosec != 0.
|
|
chtime := time.Unix(file.Sec, 987654321)
|
|
if err := os.Chtimes(path, chtime, chtime); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
// Walk the current state.
|
|
old, err := Walk(dir, nil, append(DefaultKeywords, "sha1"), nil)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
ts, err := makeTarStream(compareFiles)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
str := NewTarStreamer(bytes.NewBuffer(ts), nil, append(DefaultTarKeywords, "sha1"))
|
|
if _, err = io.Copy(ioutil.Discard, str); err != nil && err != io.EOF {
|
|
t.Fatal(err)
|
|
}
|
|
if err = str.Close(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
new, err := str.Hierarchy()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Compare.
|
|
diffs, err := Compare(old, new, append(DefaultTarKeywords, "sha1"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// 0 objects
|
|
if len(diffs) != 0 {
|
|
actualFailure := false
|
|
for i, delta := range diffs {
|
|
// XXX: Tar generation is slightly broken, so we need to ignore some bugs.
|
|
if delta.Path() == "." && delta.Type() == Modified {
|
|
// FIXME: This is a known bug.
|
|
t.Logf("'.' is different in the tar -- this is a bug in the tar generation")
|
|
|
|
// The tar generation bug means that '.' is missing a bunch of keys.
|
|
allMissing := true
|
|
for _, keyDelta := range delta.Diff() {
|
|
if keyDelta.Type() != Missing {
|
|
allMissing = false
|
|
}
|
|
}
|
|
if !allMissing {
|
|
t.Errorf("'.' has changed in a way not consistent with known bugs")
|
|
}
|
|
|
|
continue
|
|
}
|
|
|
|
// XXX: Another bug.
|
|
keys := delta.Diff()
|
|
if len(keys) == 1 && keys[0].Name() == "size" && keys[0].Type() == Missing {
|
|
// FIXME: Also a known bug with tar generation dropping size=.
|
|
t.Logf("'%s' is missing a size= keyword -- a bug in tar generation", delta.Path())
|
|
|
|
continue
|
|
}
|
|
|
|
actualFailure = true
|
|
buf, err := json.MarshalIndent(delta, "", " ")
|
|
if err == nil {
|
|
t.Logf("FAILURE: diff[%d] = %s", i, string(buf))
|
|
} else {
|
|
t.Logf("FAILURE: diff[%d] = %#v", i, delta)
|
|
}
|
|
}
|
|
|
|
if actualFailure {
|
|
t.Errorf("expected the diff length to be 0, got %d", len(diffs))
|
|
}
|
|
}
|
|
}
|