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feat(song): add basic JSON marshaling/unmarshaling tests to make sure everything gets marshalled properly

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TBD: should the various []bytes be marshaled in a different way? Go defaults to base64-encoded strings but creating just plain JSON arrays with bytes could be more friendly to both humans and computers.
This commit is contained in:
Matias Lahti 2020-11-02 16:36:54 +02:00
parent e0a793ea6d
commit 9544a130ab
1 changed files with 51 additions and 0 deletions
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go4k/song_json_test.go Normal file
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package go4k_test
import (
"encoding/json"
"github.com/vsariola/sointu/go4k"
"reflect"
"testing"
)
const expectedMarshaled = "{\"BPM\":100,\"Patterns\":[\"QABEACAAAABLAE4AAAAAAA==\"],\"Tracks\":[{\"NumVoices\":1,\"Sequence\":\"AA==\"}],\"SongLength\":0,\"Patch\":[{\"NumVoices\":1,\"Units\":[{\"Type\":\"envelope\",\"Stereo\":false,\"Parameters\":{\"attack\":32,\"decay\":32,\"gain\":128,\"release\":64,\"sustain\":64}},{\"Type\":\"oscillator\",\"Stereo\":false,\"Parameters\":{\"color\":96,\"detune\":64,\"flags\":64,\"gain\":128,\"phase\":0,\"shape\":64,\"transpose\":64}},{\"Type\":\"mulp\",\"Stereo\":false,\"Parameters\":{}},{\"Type\":\"envelope\",\"Stereo\":false,\"Parameters\":{\"attack\":32,\"decay\":32,\"gain\":128,\"release\":64,\"sustain\":64}},{\"Type\":\"oscillator\",\"Stereo\":false,\"Parameters\":{\"color\":64,\"detune\":64,\"flags\":64,\"gain\":128,\"phase\":64,\"shape\":96,\"transpose\":72}},{\"Type\":\"mulp\",\"Stereo\":false,\"Parameters\":{}},{\"Type\":\"out\",\"Stereo\":true,\"Parameters\":{\"gain\":128}}]}]}"
var testSong = go4k.Song{
BPM: 100,
Patterns: [][]byte{{64, 0, 68, 0, 32, 0, 0, 0, 75, 0, 78, 0, 0, 0, 0, 0}},
Tracks: []go4k.Track{
{NumVoices: 1, Sequence: []byte{0}},
},
SongLength: 0,
Patch: go4k.Patch{
go4k.Instrument{NumVoices: 1, Units: []go4k.Unit{
{"envelope", false, map[string]int{"attack": 32, "decay": 32, "sustain": 64, "release": 64, "gain": 128}},
{"oscillator", false, map[string]int{"transpose": 64, "detune": 64, "phase": 0, "color": 96, "shape": 64, "gain": 128, "flags": 0x40}},
{"mulp", false, map[string]int{}},
{"envelope", false, map[string]int{"attack": 32, "decay": 32, "sustain": 64, "release": 64, "gain": 128}},
{"oscillator", false, map[string]int{"transpose": 72, "detune": 64, "phase": 64, "color": 64, "shape": 96, "gain": 128, "flags": 0x40}},
{"mulp", false, map[string]int{}},
{"out", true, map[string]int{"gain": 128}},
}},
},
}
func TestSongMarshalJSON(t *testing.T) {
songbytes, err := json.Marshal(testSong)
if err != nil {
t.Fatalf("cannot marshal song: %v", err)
}
if string(songbytes) != expectedMarshaled {
t.Fatalf("expectedMarshaled song to unexpected result, got %v, expected %v", string(songbytes), expectedMarshaled)
}
}
func TestSongUnmarshalJSON(t *testing.T) {
var song go4k.Song
err := json.Unmarshal([]byte(expectedMarshaled), &song)
if err != nil {
t.Fatalf("cannot unmarshal song: %v", err)
}
if !reflect.DeepEqual(song, testSong) {
t.Fatalf("unmarshaled song to unexpected result, got %#v, expected %#v", song, testSong)
}
}