| 1 | package pathidentity |
| 2 | |
| 3 | import ( |
| 4 | "os" |
| 5 | "path/filepath" |
| 6 | "testing" |
| 7 | ) |
| 8 | |
| 9 | func TestMatcherResolvesEachDistinctPathOnce(t *testing.T) { |
| 10 | base := t.TempDir() |
| 11 | dirs := []string{} |
| 12 | for _, name := range []string{"a", "b", "c", "d"} { |
| 13 | dir := filepath.Join(base, name) |
| 14 | if err := os.Mkdir(dir, 0o755); err != nil { |
| 15 | t.Fatal(err) |
| 16 | } |
| 17 | dirs = append(dirs, dir) |
| 18 | } |
| 19 | alias := filepath.Join(base, "alias") |
| 20 | if err := os.Symlink(dirs[2], alias); err != nil { |
| 21 | t.Skipf("symlink unavailable: %v", err) |
| 22 | } |
| 23 | dirs = append(dirs, alias, filepath.Join(base, "missing")) |
| 24 | calls := map[string]int{} |
| 25 | matcher := NewMatcher(Options{FollowLeaf: true}, func(path string, options Options) (Identity, error) { |
| 26 | calls[path]++ |
| 27 | return Resolve(path, options) |
| 28 | }) |
| 29 | for _, left := range dirs { |
| 30 | for _, right := range dirs { |
| 31 | got, gotErr := matcher.Same(left, right) |
| 32 | want, wantErr := Same(left, right, Options{FollowLeaf: true}) |
| 33 | if got != want || (gotErr == nil) != (wantErr == nil) { |
| 34 | t.Fatalf("Same(%s, %s) = %v, %v; want %v, %v", left, right, got, gotErr, want, wantErr) |
| 35 | } |
| 36 | } |
| 37 | } |
| 38 | for path, n := range calls { |
| 39 | if n != 1 { |
| 40 | t.Errorf("%s resolved %d times in one pass", path, n) |
| 41 | } |
| 42 | } |
| 43 | if len(calls) != len(dirs) { |
| 44 | t.Errorf("resolved %d paths, want %d", len(calls), len(dirs)) |
| 45 | } |
| 46 | } |
| 47 |