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scales can now be anchored

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This commit is contained in:
Felix Roos 2024-01-05 13:03:40 +01:00
parent f37652edb3
commit b27f177138
3 changed files with 86 additions and 2 deletions
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33
packages/tonal/test/tonleiter.test.mjs
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@ -18,6 +18,9 @@ import {
midi2note,
renderVoicing,
scaleStep,
stepInNamedScale,
nearestNumberIndex,
note2midi,
} from '../tonleiter.mjs';
describe('tonleiter', () => {
@ -149,4 +152,34 @@ describe('tonleiter', () => {
// expect(voiceBelow('G4', 'Cm7', voicingDictionary)).toEqual(['Bb3', 'D4', 'Eb4', 'G4']);
// TODO: test with offset
});
test('nearestNumber', () => {
expect(nearestNumberIndex(0, [0, 2, 4, 5])).toEqual(0);
expect(nearestNumberIndex(1, [0, 2, 4, 5])).toEqual(0);
expect(nearestNumberIndex(1, [0, 2, 4, 5], true)).toEqual(1);
expect(nearestNumberIndex(2, [0, 2, 4, 5])).toEqual(1);
expect(nearestNumberIndex(2, [0, 2, 4, 5]), true).toEqual(1);
expect(nearestNumberIndex(3, [0, 2, 4, 5])).toEqual(1);
expect(nearestNumberIndex(3, [0, 2, 4, 5], true)).toEqual(2);
expect(nearestNumberIndex(4, [0, 2, 4, 5])).toEqual(2);
});
test('stepInNamedScale', () => {
expect(stepInNamedScale(1, 'D major')).toEqual(note2midi('E3'));
expect(stepInNamedScale(2, 'E major')).toEqual(note2midi('G#3'));
expect(stepInNamedScale(0, 'D major', 'E3')).toEqual(note2midi('E3'));
expect(stepInNamedScale(0, 'D major', 'E4')).toEqual(note2midi('E4'));
expect(stepInNamedScale(0, 'D major', 'Eb4')).toEqual(note2midi('D4'));
expect(stepInNamedScale(0, 'D major', 'F4')).toEqual(note2midi('E4'));
expect(stepInNamedScale(0, 'D major', 'F#4')).toEqual(note2midi('F#4'));
expect(stepInNamedScale(0, 'D major', 'G4')).toEqual(note2midi('G4'));
expect(stepInNamedScale(0, 'F major', 'F4')).toEqual(note2midi('F4'));
expect(stepInNamedScale(0, 'F major', 'G4')).toEqual(note2midi('G4'));
expect(stepInNamedScale(0, 'F major', 'A4')).toEqual(note2midi('A4'));
expect(stepInNamedScale(0, 'F major', 'Bb4')).toEqual(note2midi('Bb4'));
expect(stepInNamedScale(0, 'F major', 'C4')).toEqual(note2midi('C4'));
expect(stepInNamedScale(1, 'F major', 'C4')).toEqual(note2midi('D4'));
expect(stepInNamedScale(1, 'F major', 'C3')).toEqual(note2midi('D3'));
expect(stepInNamedScale(1, 'F minor', 'D4')).toEqual(note2midi('Eb4'));
});
});