| 1 | package browserops |
| 2 | |
| 3 | import ( |
| 4 | "errors" |
| 5 | "os" |
| 6 | "path/filepath" |
| 7 | "testing" |
| 8 | "time" |
| 9 | ) |
| 10 | |
| 11 | func newOp(id string) Operation { |
| 12 | return Operation{ID: id, SessionID: "s1", Generation: "g1", TabID: "tab1", Epoch: 3, DocumentToken: "doc", Action: "click", Digest: "abc"} |
| 13 | } |
| 14 | |
| 15 | func TestReserveThenSettle(t *testing.T) { |
| 16 | path := filepath.Join(t.TempDir(), "ops.json") |
| 17 | l, err := Open(path) |
| 18 | if err != nil { |
| 19 | t.Fatal(err) |
| 20 | } |
| 21 | if err := l.Reserve(newOp("op-1")); err != nil { |
| 22 | t.Fatal(err) |
| 23 | } |
| 24 | got, ok := l.Lookup("op-1") |
| 25 | if !ok || got.State != StateReserved || got.ReservedAt.IsZero() { |
| 26 | t.Fatalf("after reserve: %+v ok=%v", got, ok) |
| 27 | } |
| 28 | if err := l.Settle("op-1", StateExecuted, ""); err != nil { |
| 29 | t.Fatal(err) |
| 30 | } |
| 31 | if err := l.Settle("op-1", StateExecuted, ""); !errors.Is(err, ErrAlreadySettled) { |
| 32 | t.Fatalf("second settle: %v", err) |
| 33 | } |
| 34 | if err := l.Settle("missing", StateExecuted, ""); !errors.Is(err, ErrUnknownOperation) { |
| 35 | t.Fatalf("settle unknown id: %v", err) |
| 36 | } |
| 37 | reopened, err := Open(path) |
| 38 | if err != nil { |
| 39 | t.Fatal(err) |
| 40 | } |
| 41 | got, _ = reopened.Lookup("op-1") |
| 42 | if got.State != StateExecuted || got.SettledAt.IsZero() { |
| 43 | t.Fatalf("after reopen: %+v", got) |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | func TestDuplicateAndInvalidIDs(t *testing.T) { |
| 48 | l, err := Open(filepath.Join(t.TempDir(), "ops.json")) |
| 49 | if err != nil { |
| 50 | t.Fatal(err) |
| 51 | } |
| 52 | if err := l.Reserve(newOp("op-1")); err != nil { |
| 53 | t.Fatal(err) |
| 54 | } |
| 55 | if err := l.Reserve(newOp("op-1")); !errors.Is(err, ErrDuplicateOperation) { |
| 56 | t.Fatalf("duplicate: %v", err) |
| 57 | } |
| 58 | if err := l.Settle("op-1", StateUnknown, "receipt lost"); err != nil { |
| 59 | t.Fatal(err) |
| 60 | } |
| 61 | if err := l.Reserve(newOp("op-1")); !errors.Is(err, ErrDuplicateOperation) { |
| 62 | t.Fatalf("duplicate after unknown must still be rejected: %v", err) |
| 63 | } |
| 64 | for _, bad := range []string{"", "has space", "x/y", string(make([]byte, 101))} { |
| 65 | if err := l.Reserve(newOp(bad)); !errors.Is(err, ErrInvalidOperationID) { |
| 66 | t.Errorf("id %q: %v", bad, err) |
| 67 | } |
| 68 | } |
| 69 | } |
| 70 | |
| 71 | func TestReservedBecomesUnknownAfterCrash(t *testing.T) { |
| 72 | path := filepath.Join(t.TempDir(), "ops.json") |
| 73 | l, err := Open(path) |
| 74 | if err != nil { |
| 75 | t.Fatal(err) |
| 76 | } |
| 77 | if err := l.Reserve(newOp("op-1")); err != nil { |
| 78 | t.Fatal(err) |
| 79 | } |
| 80 | if err := l.Reserve(newOp("op-2")); err != nil { |
| 81 | t.Fatal(err) |
| 82 | } |
| 83 | if err := l.Settle("op-2", StateNotExecuted, "element missing"); err != nil { |
| 84 | t.Fatal(err) |
| 85 | } |
| 86 | reopened, err := Open(path) |
| 87 | if err != nil { |
| 88 | t.Fatal(err) |
| 89 | } |
| 90 | unknown := reopened.Unsettled() |
| 91 | if len(unknown) != 1 || unknown[0].ID != "op-1" || unknown[0].Reason == "" { |
| 92 | t.Fatalf("unsettled after crash: %+v", unknown) |
| 93 | } |
| 94 | if got, _ := reopened.Lookup("op-2"); got.State != StateNotExecuted { |
| 95 | t.Fatalf("settled op must be untouched: %+v", got) |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | func TestUnsupportedVersionAndCorruptFile(t *testing.T) { |
| 100 | dir := t.TempDir() |
| 101 | v2 := filepath.Join(dir, "v2.json") |
| 102 | if err := os.WriteFile(v2, []byte(`{"version":2,"operations":{}}`), 0o600); err != nil { |
| 103 | t.Fatal(err) |
| 104 | } |
| 105 | if _, err := Open(v2); err == nil { |
| 106 | t.Fatal("version 2 must be rejected") |
| 107 | } |
| 108 | corrupt := filepath.Join(dir, "corrupt.json") |
| 109 | if err := os.WriteFile(corrupt, []byte(`{`), 0o600); err != nil { |
| 110 | t.Fatal(err) |
| 111 | } |
| 112 | if _, err := Open(corrupt); err == nil { |
| 113 | t.Fatal("corrupt file must be rejected, never silently reset") |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | func TestPersistIsAtomic(t *testing.T) { |
| 118 | dir := t.TempDir() |
| 119 | path := filepath.Join(dir, "ops.json") |
| 120 | l, err := Open(path) |
| 121 | if err != nil { |
| 122 | t.Fatal(err) |
| 123 | } |
| 124 | l.now = func() time.Time { return time.Date(2026, 9, 9, 0, 0, 0, 0, time.UTC) } |
| 125 | if err := l.Reserve(newOp("op-1")); err != nil { |
| 126 | t.Fatal(err) |
| 127 | } |
| 128 | entries, err := os.ReadDir(dir) |
| 129 | if err != nil { |
| 130 | t.Fatal(err) |
| 131 | } |
| 132 | if len(entries) != 1 || entries[0].Name() != "ops.json" { |
| 133 | t.Fatalf("temp files must not survive a successful write: %v", entries) |
| 134 | } |
| 135 | } |
| 136 |