148 lines
3.3 KiB
Go
148 lines
3.3 KiB
Go
// +build !windows
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package archive
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"syscall"
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"testing"
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)
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func TestCanonicalTarNameForPath(t *testing.T) {
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cases := []struct{ in, expected string }{
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{"foo", "foo"},
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{"foo/bar", "foo/bar"},
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{"foo/dir/", "foo/dir/"},
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}
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for _, v := range cases {
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if out, err := CanonicalTarNameForPath(v.in); err != nil {
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t.Fatalf("cannot get canonical name for path: %s: %v", v.in, err)
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} else if out != v.expected {
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t.Fatalf("wrong canonical tar name. expected:%s got:%s", v.expected, out)
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}
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}
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}
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func TestCanonicalTarName(t *testing.T) {
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cases := []struct {
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in string
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isDir bool
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expected string
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}{
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{"foo", false, "foo"},
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{"foo", true, "foo/"},
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{"foo/bar", false, "foo/bar"},
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{"foo/bar", true, "foo/bar/"},
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}
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for _, v := range cases {
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if out, err := canonicalTarName(v.in, v.isDir); err != nil {
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t.Fatalf("cannot get canonical name for path: %s: %v", v.in, err)
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} else if out != v.expected {
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t.Fatalf("wrong canonical tar name. expected:%s got:%s", v.expected, out)
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}
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}
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}
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func TestChmodTarEntry(t *testing.T) {
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cases := []struct {
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in, expected os.FileMode
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}{
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{0000, 0000},
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{0777, 0777},
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{0644, 0644},
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{0755, 0755},
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{0444, 0444},
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}
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for _, v := range cases {
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if out := chmodTarEntry(v.in); out != v.expected {
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t.Fatalf("wrong chmod. expected:%v got:%v", v.expected, out)
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}
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}
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}
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func TestTarWithHardLink(t *testing.T) {
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origin, err := ioutil.TempDir("", "docker-test-tar-hardlink")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(origin)
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if err := ioutil.WriteFile(path.Join(origin, "1"), []byte("hello world"), 0700); err != nil {
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t.Fatal(err)
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}
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if err := os.Link(path.Join(origin, "1"), path.Join(origin, "2")); err != nil {
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t.Fatal(err)
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}
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var i1, i2 uint64
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if i1, err = getNlink(path.Join(origin, "1")); err != nil {
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t.Fatal(err)
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}
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// sanity check that we can hardlink
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if i1 != 2 {
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t.Skipf("skipping since hardlinks don't work here; expected 2 links, got %d", i1)
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}
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dest, err := ioutil.TempDir("", "docker-test-tar-hardlink-dest")
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if err != nil {
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t.Fatal(err)
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}
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defer os.RemoveAll(dest)
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// we'll do this in two steps to separate failure
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fh, err := Tar(origin, Uncompressed)
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if err != nil {
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t.Fatal(err)
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}
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// ensure we can read the whole thing with no error, before writing back out
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buf, err := ioutil.ReadAll(fh)
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if err != nil {
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t.Fatal(err)
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}
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bRdr := bytes.NewReader(buf)
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err = Untar(bRdr, dest, &TarOptions{Compression: Uncompressed})
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if err != nil {
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t.Fatal(err)
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}
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if i1, err = getInode(path.Join(dest, "1")); err != nil {
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t.Fatal(err)
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}
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if i2, err = getInode(path.Join(dest, "2")); err != nil {
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t.Fatal(err)
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}
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if i1 != i2 {
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t.Errorf("expected matching inodes, but got %d and %d", i1, i2)
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}
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}
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func getNlink(path string) (uint64, error) {
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stat, err := os.Stat(path)
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if err != nil {
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return 0, err
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}
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statT, ok := stat.Sys().(*syscall.Stat_t)
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if !ok {
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return 0, fmt.Errorf("expected type *syscall.Stat_t, got %t", stat.Sys())
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}
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// We need this conversion on ARM64
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return uint64(statT.Nlink), nil
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}
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func getInode(path string) (uint64, error) {
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stat, err := os.Stat(path)
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if err != nil {
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return 0, err
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}
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statT, ok := stat.Sys().(*syscall.Stat_t)
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if !ok {
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return 0, fmt.Errorf("expected type *syscall.Stat_t, got %t", stat.Sys())
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}
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return statT.Ino, nil
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}
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