forked from TrueCloudLab/restic
479 lines
9.9 KiB
Go
479 lines
9.9 KiB
Go
package walker
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import (
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"context"
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"encoding/json"
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"fmt"
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"testing"
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"github.com/pkg/errors"
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"github.com/restic/restic/internal/restic"
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)
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// TestTree is used to construct a list of trees for testing the walker.
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type TestTree map[string]interface{}
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// TestNode is used to test the walker.
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type TestFile struct{}
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func BuildTreeMap(tree TestTree) (m TreeMap, root restic.ID) {
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m = TreeMap{}
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id := buildTreeMap(tree, m)
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return m, id
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}
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func buildTreeMap(tree TestTree, m TreeMap) restic.ID {
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res := restic.NewTree()
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for name, item := range tree {
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switch elem := item.(type) {
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case TestFile:
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res.Insert(&restic.Node{
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Name: name,
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Type: "file",
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})
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case TestTree:
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id := buildTreeMap(elem, m)
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res.Insert(&restic.Node{
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Name: name,
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Subtree: &id,
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Type: "dir",
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})
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default:
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panic(fmt.Sprintf("invalid type %T", elem))
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}
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}
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buf, err := json.Marshal(res)
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if err != nil {
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panic(err)
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}
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id := restic.Hash(buf)
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if _, ok := m[id]; !ok {
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m[id] = res
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}
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return id
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}
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// TreeMap returns the trees from the map on LoadTree.
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type TreeMap map[restic.ID]*restic.Tree
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func (t TreeMap) LoadTree(ctx context.Context, id restic.ID) (*restic.Tree, error) {
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tree, ok := t[id]
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if !ok {
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return nil, errors.New("tree not found")
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}
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return tree, nil
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}
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// checkFunc returns a function suitable for walking the tree to check
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// something, and a function which will check the final result.
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type checkFunc func(t testing.TB) (walker WalkFunc, final func(testing.TB))
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// checkItemOrder ensures that the order of the 'path' arguments is the one passed in as 'want'.
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func checkItemOrder(want []string) checkFunc {
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pos := 0
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return func(t testing.TB) (walker WalkFunc, final func(testing.TB)) {
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walker = func(path string, node *restic.Node, err error) (bool, error) {
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if err != nil {
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t.Errorf("error walking %v: %v", path, err)
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return false, err
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}
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if pos >= len(want) {
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t.Errorf("additional unexpected path found: %v", path)
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return false, nil
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}
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if path != want[pos] {
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t.Errorf("wrong path found, want %q, got %q", want[pos], path)
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}
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pos++
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return false, nil
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}
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final = func(t testing.TB) {
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if pos != len(want) {
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t.Errorf("not enough items returned, want %d, got %d", len(want), pos)
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}
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}
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return walker, final
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}
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}
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// checkSkipFor returns SkipNode if path is in skipFor, it checks that the
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// paths the walk func is called for are exactly the ones in wantPaths.
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func checkSkipFor(skipFor map[string]struct{}, wantPaths []string) checkFunc {
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var pos int
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return func(t testing.TB) (walker WalkFunc, final func(testing.TB)) {
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walker = func(path string, node *restic.Node, err error) (bool, error) {
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if err != nil {
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t.Errorf("error walking %v: %v", path, err)
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return false, err
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}
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if pos >= len(wantPaths) {
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t.Errorf("additional unexpected path found: %v", path)
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return false, nil
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}
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if path != wantPaths[pos] {
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t.Errorf("wrong path found, want %q, got %q", wantPaths[pos], path)
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}
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pos++
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if _, ok := skipFor[path]; ok {
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return false, SkipNode
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}
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return false, nil
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}
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final = func(t testing.TB) {
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if pos != len(wantPaths) {
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t.Errorf("wrong number of paths returned, want %d, got %d", len(wantPaths), pos)
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}
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}
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return walker, final
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}
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}
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// checkIgnore returns SkipNode if path is in skipFor and sets ignore according
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// to ignoreFor. It checks that the paths the walk func is called for are exactly
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// the ones in wantPaths.
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func checkIgnore(skipFor map[string]struct{}, ignoreFor map[string]bool, wantPaths []string) checkFunc {
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var pos int
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return func(t testing.TB) (walker WalkFunc, final func(testing.TB)) {
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walker = func(path string, node *restic.Node, err error) (bool, error) {
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if err != nil {
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t.Errorf("error walking %v: %v", path, err)
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return false, err
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}
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if pos >= len(wantPaths) {
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t.Errorf("additional unexpected path found: %v", path)
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return ignoreFor[path], nil
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}
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if path != wantPaths[pos] {
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t.Errorf("wrong path found, want %q, got %q", wantPaths[pos], path)
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}
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pos++
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if _, ok := skipFor[path]; ok {
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return ignoreFor[path], SkipNode
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}
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return ignoreFor[path], nil
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}
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final = func(t testing.TB) {
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if pos != len(wantPaths) {
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t.Errorf("wrong number of paths returned, want %d, got %d", len(wantPaths), pos)
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}
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}
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return walker, final
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}
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}
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func TestWalker(t *testing.T) {
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var tests = []struct {
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tree TestTree
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checks []checkFunc
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}{
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{
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tree: TestTree{
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"foo": TestFile{},
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"subdir": TestTree{
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"subfile": TestFile{},
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},
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},
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checks: []checkFunc{
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checkItemOrder([]string{
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"/",
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"/foo",
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"/subdir",
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"/subdir/subfile",
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}),
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checkSkipFor(
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map[string]struct{}{
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"/subdir": struct{}{},
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}, []string{
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"/",
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"/foo",
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"/subdir",
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},
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),
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checkIgnore(
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map[string]struct{}{}, map[string]bool{
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"/subdir": true,
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}, []string{
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"/",
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"/foo",
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"/subdir",
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"/subdir/subfile",
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},
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),
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},
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},
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{
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tree: TestTree{
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"foo": TestFile{},
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"subdir1": TestTree{
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"subfile1": TestFile{},
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},
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"subdir2": TestTree{
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"subfile2": TestFile{},
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"subsubdir2": TestTree{
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"subsubfile3": TestFile{},
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},
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},
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},
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checks: []checkFunc{
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checkItemOrder([]string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir1/subfile1",
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"/subdir2",
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"/subdir2/subfile2",
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"/subdir2/subsubdir2",
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"/subdir2/subsubdir2/subsubfile3",
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}),
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checkSkipFor(
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map[string]struct{}{
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"/subdir1": struct{}{},
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}, []string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir2",
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"/subdir2/subfile2",
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"/subdir2/subsubdir2",
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"/subdir2/subsubdir2/subsubfile3",
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},
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),
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checkSkipFor(
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map[string]struct{}{
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"/subdir1": struct{}{},
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"/subdir2/subsubdir2": struct{}{},
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}, []string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir2",
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"/subdir2/subfile2",
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"/subdir2/subsubdir2",
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},
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),
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checkSkipFor(
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map[string]struct{}{
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"/foo": struct{}{},
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}, []string{
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"/",
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"/foo",
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},
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),
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},
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},
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{
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tree: TestTree{
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"foo": TestFile{},
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"subdir1": TestTree{
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"subfile1": TestFile{},
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"subfile2": TestFile{},
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"subfile3": TestFile{},
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},
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"subdir2": TestTree{
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"subfile1": TestFile{},
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"subfile2": TestFile{},
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"subfile3": TestFile{},
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},
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"subdir3": TestTree{
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"subfile1": TestFile{},
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"subfile2": TestFile{},
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"subfile3": TestFile{},
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},
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"zzz other": TestFile{},
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},
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checks: []checkFunc{
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checkItemOrder([]string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir1/subfile1",
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"/subdir1/subfile2",
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"/subdir1/subfile3",
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"/subdir2",
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"/subdir2/subfile1",
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"/subdir2/subfile2",
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"/subdir2/subfile3",
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"/subdir3",
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"/subdir3/subfile1",
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"/subdir3/subfile2",
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"/subdir3/subfile3",
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"/zzz other",
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}),
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checkIgnore(
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map[string]struct{}{
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"/subdir1": struct{}{},
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}, map[string]bool{
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"/subdir1": true,
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}, []string{
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"/",
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"/foo",
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"/subdir1",
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"/zzz other",
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},
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),
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checkIgnore(
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map[string]struct{}{}, map[string]bool{
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"/subdir1": true,
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}, []string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir1/subfile1",
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"/subdir1/subfile2",
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"/subdir1/subfile3",
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"/zzz other",
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},
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),
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checkIgnore(
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map[string]struct{}{
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"/subdir2": struct{}{},
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}, map[string]bool{
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"/subdir2": true,
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}, []string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir1/subfile1",
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"/subdir1/subfile2",
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"/subdir1/subfile3",
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"/subdir2",
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"/zzz other",
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},
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),
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checkIgnore(
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map[string]struct{}{}, map[string]bool{
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"/subdir1/subfile1": true,
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"/subdir1/subfile2": true,
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"/subdir1/subfile3": true,
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}, []string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir1/subfile1",
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"/subdir1/subfile2",
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"/subdir1/subfile3",
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"/zzz other",
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},
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),
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checkIgnore(
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map[string]struct{}{}, map[string]bool{
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"/subdir2/subfile1": true,
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"/subdir2/subfile2": true,
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"/subdir2/subfile3": true,
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}, []string{
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"/",
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"/foo",
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"/subdir1",
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"/subdir1/subfile1",
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"/subdir1/subfile2",
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"/subdir1/subfile3",
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"/subdir2",
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"/subdir2/subfile1",
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"/subdir2/subfile2",
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"/subdir2/subfile3",
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"/zzz other",
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},
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),
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},
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},
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{
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tree: TestTree{
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"subdir1": TestTree{},
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"subdir2": TestTree{},
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"subdir3": TestTree{
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"file": TestFile{},
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},
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"subdir4": TestTree{
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"file": TestFile{},
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},
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"subdir5": TestTree{},
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"subdir6": TestTree{},
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},
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checks: []checkFunc{
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checkItemOrder([]string{
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"/",
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"/subdir1",
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"/subdir2",
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"/subdir3",
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"/subdir3/file",
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"/subdir4",
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"/subdir4/file",
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"/subdir5",
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"/subdir6",
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}),
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},
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},
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{
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tree: TestTree{
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"subdir1": TestTree{},
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"subdir2": TestTree{},
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"subdir3": TestTree{
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"file": TestFile{},
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},
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"subdir4": TestTree{},
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"subdir5": TestTree{
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"file": TestFile{},
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},
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"subdir6": TestTree{},
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},
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checks: []checkFunc{
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checkIgnore(
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map[string]struct{}{}, map[string]bool{
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"/subdir2": true,
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}, []string{
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"/",
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"/subdir1",
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"/subdir2",
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"/subdir3",
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"/subdir3/file",
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"/subdir5",
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"/subdir5/file",
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},
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),
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},
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},
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}
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for _, test := range tests {
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t.Run("", func(t *testing.T) {
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repo, root := BuildTreeMap(test.tree)
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for _, check := range test.checks {
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t.Run("", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.TODO())
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defer cancel()
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fn, last := check(t)
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err := Walk(ctx, repo, root, restic.NewIDSet(), fn)
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if err != nil {
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t.Error(err)
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}
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last(t)
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})
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}
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})
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}
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}
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