package json import ( "testing" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) // encoded form of the data const encoded = `{ "key": "value", "list": [ "item1", "item2", "item3" ], "map": { "key": "value" }, "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) require.NoError(t, err) assert.Equal(t, encoded, string(b)) } func TestCodec_Decode(t *testing.T) { t.Run("OK", func(t *testing.T) { codec := Codec{} v := map[string]any{} err := codec.Decode([]byte(encoded), v) require.NoError(t, err) assert.Equal(t, data, v) }) t.Run("InvalidData", func(t *testing.T) { codec := Codec{} v := map[string]any{} err := codec.Decode([]byte(`invalid data`), v) require.Error(t, err) t.Logf("decoding failed as expected: %s", err) }) }