diff options
Diffstat (limited to 'player-tests.mjs')
| -rw-r--r-- | player-tests.mjs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/player-tests.mjs b/player-tests.mjs new file mode 100644 index 0000000..e2ba42f --- /dev/null +++ b/player-tests.mjs @@ -0,0 +1,20 @@ +import { Note, toCents } from './scale.mjs'; + +export default function() { + const cNote = Note.fromString('C'); + console.assert(cNote.distanceTo(cNote) === 0); + const dNote = Note.fromString('D'); + console.assert(cNote.distanceTo(dNote) === 2); + const dSharpNote = Note.fromString('D♯'); + console.assert(cNote.distanceTo(dSharpNote) === 3); + + const aNote = Note.fromString('A', 'A to A'); + console.assert(toCents([aNote, 4], [aNote, 3]) === -1200); + const bNote = Note.fromString('B'); + console.assert(toCents([aNote, 4], [bNote, 4]) == 200, 'A4 to B4 is 200 cents'); + // E F F# G G# A + const eNote = Note.fromString('E'); + console.assert(toCents([aNote, 4], [eNote, 4]) === -500, 'E4 is 500 cents lower than A4'); + + console.assert(toCents([aNote, 4], [bNote, 3]) === -1000, 'A4 to B3 is 100 cents above -1200'); +} |