package toml import ( "reflect" "testing" ) // original form of the data const original = `# key-value pair key = "value" list = ["item1", "item2", "item3"] [map] key = "value" # nested # map [nested_map] [nested_map.map] key = "value" list = [ "item1", "item2", "item3", ] ` // encoded form of the data const encoded = `key = 'value' list = ['item1', 'item2', 'item3'] [map] key = 'value' [nested_map] [nested_map.map] key = 'value' list = ['item1', 'item2', 'item3'] ` // Viper's internal representation var data = map[string]any{ "key": "value", "list": []any{ "item1", "item2", "item3", }, "map": map[string]any{ "key": "value", }, "nested_map": map[string]any{ "map": map[string]any{ "key": "value", "list": []any{ "item1", "item2", "item3", }, }, }, } func TestCodec_Encode(t *testing.T) { codec := Codec{} b, err := codec.Encode(data) if err != nil { t.Fatal(err) } if encoded != string(b) { t.Fatalf("decoded value does not match the expected one\nactual: %#v\nexpected: %#v", string(b), encoded) } } func TestCodec_Decode(t *testing.T) { t.Run("OK", func(t *testing.T) { codec := Codec{} v := map[string]any{} err := codec.Decode([]byte(original), v) if err != nil { t.Fatal(err) } if !reflect.DeepEqual(data, v) { t.Fatalf("decoded value does not match the expected one\nactual: %#v\nexpected: %#v", v, data) } }) t.Run("InvalidData", func(t *testing.T) { codec := Codec{} v := map[string]any{} err := codec.Decode([]byte(`invalid data`), v) if err == nil { t.Fatal("expected decoding to fail") } t.Logf("decoding failed as expected: %s", err) }) }