forked from TrueCloudLab/distribution
135 lines
3 KiB
Go
135 lines
3 KiB
Go
package storage
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import (
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"fmt"
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"sort"
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"testing"
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"github.com/docker/distribution/context"
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"github.com/docker/distribution/registry/storage/driver"
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"github.com/docker/distribution/registry/storage/driver/inmemory"
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)
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func testFS(t *testing.T) (driver.StorageDriver, map[string]string, context.Context) {
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d := inmemory.New()
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c := []byte("")
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ctx := context.Background()
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if err := d.PutContent(ctx, "/a/b/c/d", c); err != nil {
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t.Fatalf("Unable to put to inmemory fs")
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}
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if err := d.PutContent(ctx, "/a/b/c/e", c); err != nil {
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t.Fatalf("Unable to put to inmemory fs")
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}
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expected := map[string]string{
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"/a": "dir",
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"/a/b": "dir",
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"/a/b/c": "dir",
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"/a/b/c/d": "file",
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"/a/b/c/e": "file",
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}
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return d, expected, ctx
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}
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func TestWalkErrors(t *testing.T) {
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d, expected, ctx := testFS(t)
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fileCount := len(expected)
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err := Walk(ctx, d, "", func(fileInfo driver.FileInfo) error {
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return nil
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})
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if err == nil {
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t.Error("Expected invalid root err")
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}
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errEarlyExpected := fmt.Errorf("Early termination")
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err = Walk(ctx, d, "/", func(fileInfo driver.FileInfo) error {
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// error on the 2nd file
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if fileInfo.Path() == "/a/b" {
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return errEarlyExpected
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}
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delete(expected, fileInfo.Path())
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return nil
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})
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if len(expected) != fileCount-1 {
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t.Error("Walk failed to terminate with error")
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}
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if err != errEarlyExpected {
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if err == nil {
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t.Fatalf("expected an error due to early termination")
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} else {
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t.Error(err.Error())
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}
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}
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err = Walk(ctx, d, "/nonexistant", func(fileInfo driver.FileInfo) error {
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return nil
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})
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if err == nil {
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t.Errorf("Expected missing file err")
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}
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}
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func TestWalk(t *testing.T) {
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d, expected, ctx := testFS(t)
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var traversed []string
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err := Walk(ctx, d, "/", func(fileInfo driver.FileInfo) error {
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filePath := fileInfo.Path()
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filetype, ok := expected[filePath]
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if !ok {
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t.Fatalf("Unexpected file in walk: %q", filePath)
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}
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if fileInfo.IsDir() {
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if filetype != "dir" {
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t.Errorf("Unexpected file type: %q", filePath)
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}
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} else {
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if filetype != "file" {
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t.Errorf("Unexpected file type: %q", filePath)
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}
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}
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delete(expected, filePath)
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traversed = append(traversed, filePath)
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return nil
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})
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if len(expected) > 0 {
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t.Errorf("Missed files in walk: %q", expected)
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}
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if !sort.StringsAreSorted(traversed) {
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t.Errorf("result should be sorted: %v", traversed)
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}
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if err != nil {
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t.Fatalf(err.Error())
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}
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}
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func TestWalkSkipDir(t *testing.T) {
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d, expected, ctx := testFS(t)
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err := Walk(ctx, d, "/", func(fileInfo driver.FileInfo) error {
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filePath := fileInfo.Path()
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if filePath == "/a/b" {
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// skip processing /a/b/c and /a/b/c/d
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return ErrSkipDir
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}
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delete(expected, filePath)
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return nil
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})
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if err != nil {
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t.Fatalf(err.Error())
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}
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if _, ok := expected["/a/b/c"]; !ok {
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t.Errorf("/a/b/c not skipped")
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}
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if _, ok := expected["/a/b/c/d"]; !ok {
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t.Errorf("/a/b/c/d not skipped")
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}
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if _, ok := expected["/a/b/c/e"]; !ok {
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t.Errorf("/a/b/c/e not skipped")
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}
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}
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