29 lines
1.2 KiB
TypeScript
29 lines
1.2 KiB
TypeScript
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import {
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describe,
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expect,
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it,
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} from 'vitest';
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import { fitColumns } from './fitColumns';
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describe('fitColumns', () => {
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it('packs as many honest columns as fit, gap-aware', () => {
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// each needs 600, gap 40, available 1280 -> 1 col=600, 2 cols=1240, 3=1880
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expect(fitColumns({ naturalWidth: 600, available: 1280, gap: 40, maxColumns: 3 })).toBe(2);
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});
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it('never exceeds maxColumns even with room', () => {
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expect(fitColumns({ naturalWidth: 100, available: 5000, gap: 20, maxColumns: 3 })).toBe(3);
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});
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it('never returns less than 1', () => {
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expect(fitColumns({ naturalWidth: 9000, available: 300, gap: 20, maxColumns: 3 })).toBe(1);
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});
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it('fits a column at the exact boundary (inclusive)', () => {
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// 2 cols: 2*600 + 1*40 = 1240 == available -> fits
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expect(fitColumns({ naturalWidth: 600, available: 1240, gap: 40, maxColumns: 3 })).toBe(2);
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// one px short -> only 1
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expect(fitColumns({ naturalWidth: 600, available: 1239, gap: 40, maxColumns: 3 })).toBe(1);
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});
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it('respects a maxColumns of 1 even with unlimited room', () => {
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expect(fitColumns({ naturalWidth: 100, available: 5000, gap: 20, maxColumns: 1 })).toBe(1);
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});
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});
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