773 lines
20 KiB
Go
773 lines
20 KiB
Go
package sysfs
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import (
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"errors"
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"fmt"
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"io/fs"
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"os"
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"path"
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"runtime"
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"testing"
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"time"
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"github.com/tetratelabs/wazero/experimental/sys"
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"github.com/tetratelabs/wazero/internal/fstest"
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"github.com/tetratelabs/wazero/internal/platform"
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"github.com/tetratelabs/wazero/internal/testing/require"
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)
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func TestDirFS(t *testing.T) {
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testFS := DirFS(".")
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// Guest can look up /
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f, errno := testFS.OpenFile("/", sys.O_RDONLY, 0)
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require.EqualErrno(t, 0, errno)
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require.EqualErrno(t, 0, f.Close())
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t.Run("host path not found", func(t *testing.T) {
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testFS := DirFS("a")
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_, errno = testFS.OpenFile(".", sys.O_RDONLY, 0)
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require.EqualErrno(t, sys.ENOENT, errno)
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})
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t.Run("host path not a directory", func(t *testing.T) {
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arg0 := os.Args[0] // should be safe in scratch tests which don't have the source mounted.
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testFS := DirFS(arg0)
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d, errno := testFS.OpenFile(".", sys.O_RDONLY, 0)
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require.EqualErrno(t, 0, errno)
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_, errno = d.Readdir(-1)
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require.EqualErrno(t, sys.EBADF, errno)
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})
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}
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func TestDirFS_join(t *testing.T) {
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testFS := DirFS("/").(*dirFS)
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require.Equal(t, "/", testFS.join(""))
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require.Equal(t, "/", testFS.join("."))
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require.Equal(t, "/", testFS.join("/"))
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require.Equal(t, "/tmp", testFS.join("tmp"))
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testFS = DirFS(".").(*dirFS)
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require.Equal(t, ".", testFS.join(""))
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require.Equal(t, ".", testFS.join("."))
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require.Equal(t, ".", testFS.join("/"))
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require.Equal(t, "."+string(os.PathSeparator)+"tmp", testFS.join("tmp"))
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}
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func TestDirFS_String(t *testing.T) {
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testFS := DirFS(".")
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// String has the name of the path entered
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require.Equal(t, ".", testFS.(fmt.Stringer).String())
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}
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func TestDirFS_Lstat(t *testing.T) {
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tmpDir := t.TempDir()
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require.NoError(t, fstest.WriteTestFiles(tmpDir))
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testFS := DirFS(tmpDir)
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for _, path := range []string{"animals.txt", "sub", "sub-link"} {
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require.EqualErrno(t, 0, testFS.Symlink(path, path+"-link"))
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}
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testLstat(t, testFS)
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}
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func TestDirFS_MkDir(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "mkdir"
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realPath := path.Join(tmpDir, name)
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t.Run("doesn't exist", func(t *testing.T) {
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require.EqualErrno(t, 0, testFS.Mkdir(name, fs.ModeDir))
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stat, err := os.Stat(realPath)
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require.NoError(t, err)
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require.Equal(t, name, stat.Name())
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require.True(t, stat.IsDir())
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})
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t.Run("dir exists", func(t *testing.T) {
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err := testFS.Mkdir(name, fs.ModeDir)
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require.EqualErrno(t, sys.EEXIST, err)
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})
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t.Run("file exists", func(t *testing.T) {
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require.NoError(t, os.Remove(realPath))
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require.NoError(t, os.Mkdir(realPath, 0o700))
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err := testFS.Mkdir(name, fs.ModeDir)
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require.EqualErrno(t, sys.EEXIST, err)
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})
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t.Run("try creating on file", func(t *testing.T) {
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filePath := path.Join("non-existing-dir", "foo.txt")
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err := testFS.Mkdir(filePath, fs.ModeDir)
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require.EqualErrno(t, sys.ENOENT, err)
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})
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// Remove the path so that we can test creating it with perms.
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require.NoError(t, os.Remove(realPath))
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// Setting mode only applies to files on windows
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if runtime.GOOS != "windows" {
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t.Run("dir", func(t *testing.T) {
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require.NoError(t, os.Mkdir(realPath, 0o444))
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defer os.RemoveAll(realPath)
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testChmod(t, testFS, name)
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})
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}
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t.Run("file", func(t *testing.T) {
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require.NoError(t, os.WriteFile(realPath, nil, 0o444))
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defer os.RemoveAll(realPath)
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testChmod(t, testFS, name)
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})
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}
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func testChmod(t *testing.T, testFS sys.FS, path string) {
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// Test base case, using 0o444 not 0o400 for read-back on windows.
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requireMode(t, testFS, path, 0o444)
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// Test adding write, using 0o666 not 0o600 for read-back on windows.
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require.EqualErrno(t, 0, testFS.Chmod(path, 0o666))
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requireMode(t, testFS, path, 0o666)
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if runtime.GOOS != "windows" {
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// Test clearing group and world, setting owner read+execute.
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require.EqualErrno(t, 0, testFS.Chmod(path, 0o500))
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requireMode(t, testFS, path, 0o500)
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}
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}
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func requireMode(t *testing.T, testFS sys.FS, path string, mode fs.FileMode) {
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st, errno := testFS.Stat(path)
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require.EqualErrno(t, 0, errno)
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require.Equal(t, mode, st.Mode.Perm())
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}
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func TestDirFS_Rename(t *testing.T) {
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t.Run("from doesn't exist", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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file1 := "file1"
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file1Path := path.Join(tmpDir, file1)
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err := os.WriteFile(file1Path, []byte{1}, 0o600)
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require.NoError(t, err)
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err = testFS.Rename("file2", file1)
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require.EqualErrno(t, sys.ENOENT, err)
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})
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t.Run("file to non-exist", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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file1 := "file1"
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file1Path := path.Join(tmpDir, file1)
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file1Contents := []byte{1}
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errno := os.WriteFile(file1Path, file1Contents, 0o600)
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require.NoError(t, errno)
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file2 := "file2"
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file2Path := path.Join(tmpDir, file2)
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errno = testFS.Rename(file1, file2)
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require.EqualErrno(t, 0, errno)
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// Show the prior path no longer exists
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_, errno = os.Stat(file1Path)
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require.EqualErrno(t, sys.ENOENT, sys.UnwrapOSError(errno))
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s, err := os.Stat(file2Path)
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require.NoError(t, err)
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require.False(t, s.IsDir())
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})
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t.Run("dir to non-exist", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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dir1 := "dir1"
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dir1Path := path.Join(tmpDir, dir1)
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require.NoError(t, os.Mkdir(dir1Path, 0o700))
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dir2 := "dir2"
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dir2Path := path.Join(tmpDir, dir2)
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errrno := testFS.Rename(dir1, dir2)
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require.EqualErrno(t, 0, errrno)
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// Show the prior path no longer exists
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_, err := os.Stat(dir1Path)
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require.EqualErrno(t, sys.ENOENT, sys.UnwrapOSError(err))
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s, err := os.Stat(dir2Path)
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require.NoError(t, err)
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require.True(t, s.IsDir())
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})
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t.Run("dir to file", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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dir1 := "dir1"
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dir1Path := path.Join(tmpDir, dir1)
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require.NoError(t, os.Mkdir(dir1Path, 0o700))
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dir2 := "dir2"
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dir2Path := path.Join(tmpDir, dir2)
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// write a file to that path
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f, err := os.OpenFile(dir2Path, os.O_RDWR|os.O_CREATE, 0o600)
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require.NoError(t, err)
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require.NoError(t, f.Close())
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errno := testFS.Rename(dir1, dir2)
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require.EqualErrno(t, sys.ENOTDIR, errno)
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})
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t.Run("file to dir", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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file1 := "file1"
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file1Path := path.Join(tmpDir, file1)
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file1Contents := []byte{1}
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err := os.WriteFile(file1Path, file1Contents, 0o600)
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require.NoError(t, err)
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dir1 := "dir1"
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dir1Path := path.Join(tmpDir, dir1)
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require.NoError(t, os.Mkdir(dir1Path, 0o700))
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errno := testFS.Rename(file1, dir1)
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require.EqualErrno(t, sys.EISDIR, errno)
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})
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// Similar to https://github.com/ziglang/zig/blob/0.10.1/lib/std/fs/test.zig#L567-L582
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t.Run("dir to empty dir should be fine", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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dir1 := "dir1"
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dir1Path := path.Join(tmpDir, dir1)
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require.NoError(t, os.Mkdir(dir1Path, 0o700))
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// add a file to that directory
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file1 := "file1"
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file1Path := path.Join(dir1Path, file1)
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file1Contents := []byte{1}
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err := os.WriteFile(file1Path, file1Contents, 0o600)
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require.NoError(t, err)
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dir2 := "dir2"
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dir2Path := path.Join(tmpDir, dir2)
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require.NoError(t, os.Mkdir(dir2Path, 0o700))
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errno := testFS.Rename(dir1, dir2)
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require.EqualErrno(t, 0, errno)
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// Show the prior path no longer exists
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_, err = os.Stat(dir1Path)
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require.EqualErrno(t, sys.ENOENT, sys.UnwrapOSError(err))
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// Show the file inside that directory moved
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s, err := os.Stat(path.Join(dir2Path, file1))
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require.NoError(t, err)
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require.False(t, s.IsDir())
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})
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// Similar to https://github.com/ziglang/zig/blob/0.10.1/lib/std/fs/test.zig#L584-L604
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t.Run("dir to non empty dir should be EXIST", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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dir1 := "dir1"
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dir1Path := path.Join(tmpDir, dir1)
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require.NoError(t, os.Mkdir(dir1Path, 0o700))
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// add a file to that directory
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file1 := "file1"
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file1Path := path.Join(dir1Path, file1)
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file1Contents := []byte{1}
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err := os.WriteFile(file1Path, file1Contents, 0o600)
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require.NoError(t, err)
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dir2 := "dir2"
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dir2Path := path.Join(tmpDir, dir2)
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require.NoError(t, os.Mkdir(dir2Path, 0o700))
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// Make the destination non-empty.
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err = os.WriteFile(path.Join(dir2Path, "existing.txt"), []byte("any thing"), 0o600)
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require.NoError(t, err)
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errno := testFS.Rename(dir1, dir2)
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require.EqualErrno(t, sys.ENOTEMPTY, errno)
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})
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t.Run("file to file", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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file1 := "file1"
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file1Path := path.Join(tmpDir, file1)
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file1Contents := []byte{1}
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err := os.WriteFile(file1Path, file1Contents, 0o600)
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require.NoError(t, err)
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file2 := "file2"
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file2Path := path.Join(tmpDir, file2)
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file2Contents := []byte{2}
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err = os.WriteFile(file2Path, file2Contents, 0o600)
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require.NoError(t, err)
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errno := testFS.Rename(file1, file2)
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require.EqualErrno(t, 0, errno)
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// Show the prior path no longer exists
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_, err = os.Stat(file1Path)
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require.EqualErrno(t, sys.ENOENT, sys.UnwrapOSError(err))
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// Show the file1 overwrote file2
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b, err := os.ReadFile(file2Path)
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require.NoError(t, err)
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require.Equal(t, file1Contents, b)
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})
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t.Run("dir to itself", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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dir1 := "dir1"
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dir1Path := path.Join(tmpDir, dir1)
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require.NoError(t, os.Mkdir(dir1Path, 0o700))
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errno := testFS.Rename(dir1, dir1)
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require.EqualErrno(t, 0, errno)
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s, err := os.Stat(dir1Path)
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require.NoError(t, err)
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require.True(t, s.IsDir())
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})
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t.Run("file to itself", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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file1 := "file1"
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file1Path := path.Join(tmpDir, file1)
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file1Contents := []byte{1}
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err := os.WriteFile(file1Path, file1Contents, 0o600)
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require.NoError(t, err)
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errno := testFS.Rename(file1, file1)
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require.EqualErrno(t, 0, errno)
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b, err := os.ReadFile(file1Path)
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require.NoError(t, err)
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require.Equal(t, file1Contents, b)
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})
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}
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func TestDirFS_Rmdir(t *testing.T) {
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t.Run("doesn't exist", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "rmdir"
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err := testFS.Rmdir(name)
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require.EqualErrno(t, sys.ENOENT, err)
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})
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t.Run("dir not empty", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "rmdir"
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realPath := path.Join(tmpDir, name)
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require.NoError(t, os.Mkdir(realPath, 0o700))
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fileInDir := path.Join(realPath, "file")
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require.NoError(t, os.WriteFile(fileInDir, []byte{}, 0o600))
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err := testFS.Rmdir(name)
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require.EqualErrno(t, sys.ENOTEMPTY, err)
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require.NoError(t, os.Remove(fileInDir))
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})
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t.Run("dir previously not empty", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "rmdir"
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realPath := path.Join(tmpDir, name)
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require.NoError(t, os.Mkdir(realPath, 0o700))
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// Create a file and then delete it.
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fileInDir := path.Join(realPath, "file")
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require.NoError(t, os.WriteFile(fileInDir, []byte{}, 0o600))
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require.NoError(t, os.Remove(fileInDir))
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// After deletion, try removing directory.
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errno := testFS.Rmdir(name)
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require.EqualErrno(t, 0, errno)
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})
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t.Run("dir empty", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "rmdir"
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realPath := path.Join(tmpDir, name)
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require.NoError(t, os.Mkdir(realPath, 0o700))
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require.EqualErrno(t, 0, testFS.Rmdir(name))
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_, err := os.Stat(realPath)
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require.Error(t, err)
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})
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t.Run("dir empty while opening", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "rmdir"
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realPath := path.Join(tmpDir, name)
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require.NoError(t, os.Mkdir(realPath, 0o700))
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f, errno := testFS.OpenFile(name, sys.O_DIRECTORY, 0o700)
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require.EqualErrno(t, 0, errno)
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defer f.Close()
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require.EqualErrno(t, 0, testFS.Rmdir(name))
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_, err := os.Stat(realPath)
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require.Error(t, err)
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})
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t.Run("not directory", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "rmdir"
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realPath := path.Join(tmpDir, name)
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require.NoError(t, os.WriteFile(realPath, []byte{}, 0o600))
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err := testFS.Rmdir(name)
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require.EqualErrno(t, sys.ENOTDIR, err)
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require.NoError(t, os.Remove(realPath))
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})
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}
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func TestDirFS_Unlink(t *testing.T) {
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t.Run("doesn't exist", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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name := "unlink"
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err := testFS.Unlink(name)
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require.EqualErrno(t, sys.ENOENT, err)
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})
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t.Run("target: dir", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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dir := "dir"
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realPath := path.Join(tmpDir, dir)
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require.NoError(t, os.Mkdir(realPath, 0o700))
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err := testFS.Unlink(dir)
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require.EqualErrno(t, sys.EISDIR, err)
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require.NoError(t, os.Remove(realPath))
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})
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t.Run("target: symlink to dir", func(t *testing.T) {
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tmpDir := t.TempDir()
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testFS := DirFS(tmpDir)
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|
|
|
// Create link target dir.
|
|
subDirName := "subdir"
|
|
subDirRealPath := path.Join(tmpDir, subDirName)
|
|
require.NoError(t, os.Mkdir(subDirRealPath, 0o700))
|
|
|
|
// Create a symlink to the subdirectory.
|
|
const symlinkName = "symlink-to-dir"
|
|
require.EqualErrno(t, 0, testFS.Symlink("subdir", symlinkName))
|
|
|
|
// Unlinking the symlink should suceed.
|
|
errno := testFS.Unlink(symlinkName)
|
|
require.EqualErrno(t, 0, errno)
|
|
})
|
|
|
|
t.Run("file exists", func(t *testing.T) {
|
|
tmpDir := t.TempDir()
|
|
testFS := DirFS(tmpDir)
|
|
|
|
name := "unlink"
|
|
realPath := path.Join(tmpDir, name)
|
|
|
|
require.NoError(t, os.WriteFile(realPath, []byte{}, 0o600))
|
|
|
|
require.EqualErrno(t, 0, testFS.Unlink(name))
|
|
|
|
_, err := os.Stat(realPath)
|
|
require.Error(t, err)
|
|
})
|
|
}
|
|
|
|
func TestDirFS_Utimesns(t *testing.T) {
|
|
tmpDir := t.TempDir()
|
|
testFS := DirFS(tmpDir)
|
|
|
|
file := "file"
|
|
err := os.WriteFile(path.Join(tmpDir, file), []byte{}, 0o700)
|
|
require.NoError(t, err)
|
|
|
|
dir := "dir"
|
|
err = os.Mkdir(path.Join(tmpDir, dir), 0o700)
|
|
require.NoError(t, err)
|
|
|
|
t.Run("doesn't exist", func(t *testing.T) {
|
|
err := testFS.Utimens("nope", 0, 0)
|
|
require.EqualErrno(t, sys.ENOENT, err)
|
|
})
|
|
|
|
// Note: This sets microsecond granularity because Windows doesn't support
|
|
// nanosecond.
|
|
//
|
|
// Negative isn't tested as most platforms don't return consistent results.
|
|
tests := []struct {
|
|
name string
|
|
atim, mtim int64
|
|
}{
|
|
{
|
|
name: "nil",
|
|
},
|
|
{
|
|
name: "a=omit,m=omit",
|
|
atim: sys.UTIME_OMIT,
|
|
mtim: sys.UTIME_OMIT,
|
|
},
|
|
{
|
|
name: "a=set,m=omit",
|
|
atim: int64(123*time.Second + 4*time.Microsecond),
|
|
mtim: sys.UTIME_OMIT,
|
|
},
|
|
{
|
|
name: "a=omit,m=set",
|
|
atim: sys.UTIME_OMIT,
|
|
mtim: int64(123*time.Second + 4*time.Microsecond),
|
|
},
|
|
{
|
|
name: "a=set,m=set",
|
|
atim: int64(123*time.Second + 4*time.Microsecond),
|
|
mtim: int64(223*time.Second + 5*time.Microsecond),
|
|
},
|
|
}
|
|
|
|
for _, fileType := range []string{"dir", "file", "link"} {
|
|
for _, tt := range tests {
|
|
tc := tt
|
|
fileType := fileType
|
|
name := fileType + " " + tc.name
|
|
|
|
t.Run(name, func(t *testing.T) {
|
|
tmpDir := t.TempDir()
|
|
testFS := DirFS(tmpDir)
|
|
|
|
file := path.Join(tmpDir, "file")
|
|
errno := os.WriteFile(file, []byte{}, 0o700)
|
|
require.NoError(t, errno)
|
|
|
|
link := file + "-link"
|
|
require.NoError(t, os.Symlink(file, link))
|
|
|
|
dir := path.Join(tmpDir, "dir")
|
|
errno = os.Mkdir(dir, 0o700)
|
|
require.NoError(t, errno)
|
|
|
|
var path, statPath string
|
|
switch fileType {
|
|
case "dir":
|
|
path = "dir"
|
|
statPath = "dir"
|
|
case "file":
|
|
path = "file"
|
|
statPath = "file"
|
|
case "link":
|
|
path = "file-link"
|
|
statPath = "file"
|
|
default:
|
|
panic(tc)
|
|
}
|
|
|
|
oldSt, errno := testFS.Lstat(statPath)
|
|
require.EqualErrno(t, 0, errno)
|
|
|
|
errno = testFS.Utimens(path, tc.atim, tc.mtim)
|
|
require.EqualErrno(t, 0, errno)
|
|
|
|
newSt, errno := testFS.Lstat(statPath)
|
|
require.EqualErrno(t, 0, errno)
|
|
|
|
if platform.CompilerSupported() {
|
|
if tc.atim == sys.UTIME_OMIT {
|
|
require.Equal(t, oldSt.Atim, newSt.Atim)
|
|
} else {
|
|
require.Equal(t, tc.atim, newSt.Atim)
|
|
}
|
|
}
|
|
|
|
// When compiler isn't supported, we can still check mtim.
|
|
if tc.mtim == sys.UTIME_OMIT {
|
|
require.Equal(t, oldSt.Mtim, newSt.Mtim)
|
|
} else {
|
|
require.Equal(t, tc.mtim, newSt.Mtim)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestDirFS_OpenFile(t *testing.T) {
|
|
tmpDir := t.TempDir()
|
|
|
|
// Create a subdirectory, so we can test reads outside the sys.FS root.
|
|
tmpDir = path.Join(tmpDir, t.Name())
|
|
require.NoError(t, os.Mkdir(tmpDir, 0o700))
|
|
require.NoError(t, fstest.WriteTestFiles(tmpDir))
|
|
|
|
testFS := DirFS(tmpDir)
|
|
|
|
testOpen_Read(t, testFS, statSetsIno(), true)
|
|
|
|
testOpen_O_RDWR(t, tmpDir, testFS)
|
|
|
|
t.Run("path outside root valid", func(t *testing.T) {
|
|
_, err := testFS.OpenFile("../foo", sys.O_RDONLY, 0)
|
|
|
|
// sys.FS allows relative path lookups
|
|
require.True(t, errors.Is(err, fs.ErrNotExist))
|
|
})
|
|
}
|
|
|
|
func TestDirFS_Stat(t *testing.T) {
|
|
tmpDir := t.TempDir()
|
|
require.NoError(t, fstest.WriteTestFiles(tmpDir))
|
|
|
|
testFS := DirFS(tmpDir)
|
|
testStat(t, testFS)
|
|
|
|
// from os.TestDirFSPathsValid
|
|
if runtime.GOOS != "windows" {
|
|
t.Run("strange name", func(t *testing.T) {
|
|
name := `e:xperi\ment.txt`
|
|
require.NoError(t, os.WriteFile(path.Join(tmpDir, name), nil, 0o600))
|
|
|
|
_, errno := testFS.Stat(name)
|
|
require.EqualErrno(t, 0, errno)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestDirFS_Readdir(t *testing.T) {
|
|
root := t.TempDir()
|
|
testFS := DirFS(root)
|
|
|
|
const readDirTarget = "dir"
|
|
errno := testFS.Mkdir(readDirTarget, 0o700)
|
|
require.EqualErrno(t, 0, errno)
|
|
|
|
// Open the empty directory
|
|
dirFile, errno := testFS.OpenFile(readDirTarget, sys.O_RDONLY, 0)
|
|
require.EqualErrno(t, 0, errno)
|
|
defer dirFile.Close()
|
|
|
|
// Write files to the directory after it is open.
|
|
require.NoError(t, os.WriteFile(path.Join(root, readDirTarget, "1"), nil, 0o444))
|
|
require.NoError(t, os.WriteFile(path.Join(root, readDirTarget, "2"), nil, 0o444))
|
|
|
|
// Test files are visible. This fails in windows unless the implementation
|
|
// re-opens the underlying file.
|
|
// https://github.com/ziglang/zig/blob/e3736baddb8ecff90f0594be9f604c7484ce9aa2/lib/std/fs/test.zig#L290-L317
|
|
t.Run("Sees files written after open", func(t *testing.T) {
|
|
dirents, errno := dirFile.Readdir(1)
|
|
require.EqualErrno(t, 0, errno)
|
|
|
|
require.Equal(t, 1, len(dirents))
|
|
n := dirents[0].Name
|
|
switch n {
|
|
case "1", "2": // order is inconsistent on scratch images.
|
|
default:
|
|
require.Equal(t, "1", n)
|
|
}
|
|
})
|
|
|
|
// Test there is no error reading the directory if it was deleted while
|
|
// iterating. See docs on Readdir for why in general, but specifically Zig
|
|
// tests enforce this. This test is Windows sensitive as well.
|
|
//
|
|
// https://github.com/ziglang/zig/blob/e3736baddb8ecff90f0594be9f604c7484ce9aa2/lib/std/fs/test.zig#L311C1-L311C1
|
|
t.Run("sys.ENOENT or no error, deleted while reading", func(t *testing.T) {
|
|
require.NoError(t, os.RemoveAll(path.Join(root, readDirTarget)))
|
|
|
|
dirents, errno := dirFile.Readdir(-1)
|
|
if errno != 0 {
|
|
require.EqualErrno(t, sys.ENOENT, errno)
|
|
}
|
|
|
|
require.Equal(t, 0, len(dirents))
|
|
})
|
|
}
|
|
|
|
func TestDirFS_Link(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Set up the test files
|
|
tmpDir := t.TempDir()
|
|
require.NoError(t, fstest.WriteTestFiles(tmpDir))
|
|
|
|
testFS := DirFS(tmpDir)
|
|
|
|
require.EqualErrno(t, testFS.Link("cat", ""), sys.ENOENT)
|
|
require.EqualErrno(t, testFS.Link("sub/test.txt", "sub/test.txt"), sys.EEXIST)
|
|
require.EqualErrno(t, testFS.Link("sub/test.txt", "."), sys.EEXIST)
|
|
require.EqualErrno(t, testFS.Link("sub/test.txt", ""), sys.EEXIST)
|
|
require.EqualErrno(t, testFS.Link("sub/test.txt", "/"), sys.EEXIST)
|
|
require.EqualErrno(t, 0, testFS.Link("sub/test.txt", "foo"))
|
|
}
|
|
|
|
func TestDirFS_Symlink(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
// Set up the test files
|
|
tmpDir := t.TempDir()
|
|
require.NoError(t, fstest.WriteTestFiles(tmpDir))
|
|
|
|
testFS := DirFS(tmpDir)
|
|
|
|
require.EqualErrno(t, sys.EEXIST, testFS.Symlink("sub/test.txt", "sub/test.txt"))
|
|
// Non-existing old name is allowed.
|
|
require.EqualErrno(t, 0, testFS.Symlink("non-existing", "aa"))
|
|
require.EqualErrno(t, 0, testFS.Symlink("sub/", "symlinked-subdir"))
|
|
|
|
st, err := os.Lstat(path.Join(tmpDir, "aa"))
|
|
require.NoError(t, err)
|
|
require.Equal(t, "aa", st.Name())
|
|
require.True(t, st.Mode()&fs.ModeSymlink > 0 && !st.IsDir())
|
|
|
|
st, err = os.Lstat(path.Join(tmpDir, "symlinked-subdir"))
|
|
require.NoError(t, err)
|
|
require.Equal(t, "symlinked-subdir", st.Name())
|
|
require.True(t, st.Mode()&fs.ModeSymlink > 0)
|
|
}
|
|
|
|
func TestDirFS_Readlink(t *testing.T) {
|
|
tmpDir := t.TempDir()
|
|
require.NoError(t, fstest.WriteTestFiles(tmpDir))
|
|
|
|
testFS := DirFS(tmpDir)
|
|
testReadlink(t, testFS, testFS)
|
|
}
|