48 lines
1.3 KiB
TypeScript
48 lines
1.3 KiB
TypeScript
import { describe, expect, it } from 'vitest';
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import { hexToPixels, pixelsToHex } from './text';
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import { makeImage } from './test-helpers';
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describe('pixelsToHex', () => {
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it('форматирует пиксели как rrggbbaa построчно', () => {
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const out = pixelsToHex(
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makeImage(2, 2, [
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[255, 0, 0, 255],
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[0, 255, 0, 200],
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[16, 32, 48, 64],
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[0, 0, 0, 0]
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])
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);
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expect(out).toBe('ff0000ff 00ff00c8\n10203040 00000000');
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});
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});
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describe('hexToPixels', () => {
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it('обратим к pixelsToHex', () => {
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const source = makeImage(3, 1, [
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[1, 2, 3, 4],
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[250, 251, 252, 253],
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[9, 9, 9, 128]
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]);
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expect(hexToPixels(pixelsToHex(source), 3)).toEqual(source);
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});
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it('допускает произвольные переводы строк и регистр', () => {
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const out = hexToPixels('FF0000FF\n\n00FF0080 00000080', 1);
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expect(out.width).toBe(1);
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expect(out.height).toBe(3);
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expect([...out.data]).toEqual([
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255, 0, 0, 255,
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0, 255, 0, 128,
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0, 0, 0, 128
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]);
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});
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it.each([
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['ff0000', 'битые токены'],
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['ff0000ff ff0000ff ff0000ff', 'не делится на ширину'],
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['', 'пустой ввод']
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])('бросает понятную ошибку: %s (%s)', (input) => {
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expect(() => hexToPixels(input, 2)).toThrow();
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});
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});
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