86 lines
2.2 KiB
TypeScript
86 lines
2.2 KiB
TypeScript
import {TestBed} from '@angular/core/testing';
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import {TransposeService} from './transpose.service';
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import {LineType} from './line-type';
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import {Line} from './line';
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describe('TransposeService', () => {
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let service: TransposeService;
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beforeEach(async () => {
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await TestBed.configureTestingModule({});
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service = TestBed.inject(TransposeService);
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});
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it('should create map upwards', () => {
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const map = service.getMap('D', 'G');
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if (map) {
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void expect(map['D']).toBe('G');
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}
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});
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it('should create map downwards', () => {
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const map = service.getMap('G', 'D');
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if (map) {
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void expect(map['G']).toBe('D');
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}
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});
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it('should transpose enharmonic targets by semitone distance', () => {
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const distance = service.getDistance('C', 'Db');
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const map = service.getMap('C', 'Db');
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void expect(distance).toBe(1);
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void expect(map?.['C']).toBe('Db');
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void expect(map?.['G']).toBe('Ab');
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});
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it('should keep german B/H notation consistent', () => {
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const distance = service.getDistance('H', 'C');
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const map = service.getMap('H', 'C');
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void expect(distance).toBe(1);
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void expect(map?.['H']).toBe('C');
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void expect(map?.['B']).toBe('H');
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});
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it('should render unknown chords as X', () => {
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const line: Line = {
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type: LineType.chord,
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text: '',
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chords: [{chord: 'Q', add: 'sus4', slashChord: null, position: 0, length: 1}],
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};
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const rendered = service.renderChords(line);
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void expect(rendered.text).toBe('Xsus4');
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});
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it('should render unknown slash chords as X', () => {
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const line: Line = {
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type: LineType.chord,
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text: '',
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chords: [{chord: 'C', add: null, slashChord: 'Q', position: 0, length: 1}],
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};
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const rendered = service.renderChords(line);
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void expect(rendered.text).toBe('C/X');
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});
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it('should transpose lines with long chord positions without truncating', () => {
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const line: Line = {
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type: LineType.chord,
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text: '',
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chords: [{chord: 'C', add: null, slashChord: null, position: 120, length: 1}],
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};
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const rendered = service.renderChords(line);
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void expect(rendered.text.length).toBe(121);
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void expect(rendered.text.endsWith('C')).toBe(true);
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});
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});
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