| 21 | } |
| 22 | |
| 23 | func TestBasic(t *testing.T) { |
| 24 | t.Parallel() |
| 25 | type Data struct { |
| 26 | Name string |
| 27 | Friends []string |
| 28 | Ages map[string]int |
| 29 | } |
| 30 | want := Data{ |
| 31 | Name: "Alice", |
| 32 | Friends: []string{"Bob", "Carol", "Dave"}, |
| 33 | Ages: map[string]int{"Bob": 25, "Carol": 30, "Dave": 35}, |
| 34 | } |
| 35 | |
| 36 | path := filepath.Join(t.TempDir(), "testbasic.json") |
| 37 | data, err := New[Data](path) |
| 38 | if err != nil { |
| 39 | t.Fatal(err) |
| 40 | } |
| 41 | |
| 42 | mustWrite(t, data, func(data *Data) { |
| 43 | data.Name = want.Name |
| 44 | data.Friends = append([]string{}, want.Friends...) |
| 45 | data.Ages = make(map[string]int, len(want.Ages)) |
| 46 | for k, v := range want.Ages { |
| 47 | data.Ages[k] = v |
| 48 | } |
| 49 | }) |
| 50 | mustWrite(t, data, func(*Data) {}) // noop |
| 51 | |
| 52 | data.Read(func(data *Data) { |
| 53 | if !reflect.DeepEqual(*data, want) { |
| 54 | t.Errorf("got %+v, want %+v", *data, want) |
| 55 | } |
| 56 | }) |
| 57 | |
| 58 | data, err = Load[Data](path) |
| 59 | if err != nil { |
| 60 | t.Fatal(err) |
| 61 | } |
| 62 | data.Read(func(data *Data) { |
| 63 | if !reflect.DeepEqual(*data, want) { |
| 64 | t.Errorf("got %+v, want %+v", *data, want) |
| 65 | } |
| 66 | }) |
| 67 | } |
| 68 | |
| 69 | func TestRollbackOnProgramError(t *testing.T) { |
| 70 | t.Parallel() |