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packages/react-guitar-fretter/src/__test__/fretter.test.ts
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -1,15 +1,65 @@ | ||
import fretter from '../' | ||
import fretter, { toSemitones } from '../' | ||
|
||
const toSemitones = (text: string) => text.split('').map((c) => c === '1') | ||
describe('toSemitones()', () => { | ||
it(`maps correctly`, () => | ||
// prettier-ignore | ||
expect( | ||
toSemitones('01010101010') | ||
).toEqual([false, true, false, true, false, true, false, true, false, true, false])) | ||
}) | ||
|
||
describe('fretter()', () => { | ||
it(`frets C major`, () => | ||
expect( | ||
fretter({ root: 0, semitones: toSemitones('00010010000') })[0] | ||
).toEqual([0, 1, 0, 2, 3, -1])) | ||
|
||
it(`frets C major barre`, () => | ||
expect( | ||
fretter( | ||
{ | ||
root: 0, | ||
semitones: toSemitones('00010010000'), | ||
}, | ||
{ restrictChordTypeTo: 'barre' } | ||
)[0] | ||
).toEqual([3, 5, 5, 5, 3, -1])) | ||
|
||
it(`frets C major open`, () => | ||
expect( | ||
fretter( | ||
{ | ||
root: 0, | ||
semitones: toSemitones('00010010000'), | ||
}, | ||
{ restrictChordTypeTo: 'open' } | ||
)[0] | ||
).toEqual([0, 1, 0, 2, 3, -1])) | ||
|
||
it(`frets A minor`, () => | ||
expect( | ||
fretter({ root: 9, semitones: toSemitones('00100010000') })[0] | ||
).toEqual([0, 1, 2, 2, 0, -1])) | ||
|
||
it(`frets A minor barre`, () => | ||
expect( | ||
fretter( | ||
{ | ||
root: 9, | ||
semitones: toSemitones('00100010000'), | ||
}, | ||
{ restrictChordTypeTo: 'barre' } | ||
)[0] | ||
).toEqual([5, 5, 5, 7, 7, 5])) | ||
|
||
it(`frets A minor open`, () => | ||
expect( | ||
fretter( | ||
{ | ||
root: 9, | ||
semitones: toSemitones('00100010000'), | ||
}, | ||
{ restrictChordTypeTo: 'open' } | ||
)[0] | ||
).toEqual([0, 1, 2, 2, 0, -1])) | ||
}) |
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