abc-notation-transposition/tests/unit/funcs/transposition-utils/update-stored-accidental.test.js

A robust utility for transposing ABC Notation by half steps.

const {updateStoredAccidentals} = require('../../../../functions/transposition-utils');

test('Expect updateStoredAccidentals to correctly update stored accidentals.', () => {
    const storedAccidentals = {
        A: "=",
        B: "_",
        C: "^",
        D: "__",
        E: "^^",
        F: "=",
        G: "="
    }
    updateStoredAccidentals(storedAccidentals, 'A', '_');
    expect(storedAccidentals.A).toBe('_');

    updateStoredAccidentals(storedAccidentals, 'B', '=');
    expect(storedAccidentals.B).toBe('=');
})