21 lines
833 B
TypeScript
21 lines
833 B
TypeScript
import { describe, expect, it } from 'vitest';
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import { toSafeInteger, withSafeIntegerId } from '../src/util/parse.js';
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describe('exact numeric ID transport', () => {
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it('preserves IDs above int4 through the maximum exact JS integer', () => {
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expect(toSafeInteger(2_147_483_648n)).toBe(2_147_483_648);
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expect(toSafeInteger(9_007_199_254_740_991n)).toBe(Number.MAX_SAFE_INTEGER);
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expect(withSafeIntegerId({ id: 2_147_483_648n, text: 'record' })).toEqual({
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id: 2_147_483_648,
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text: 'record',
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});
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});
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it('rejects silent precision loss, fractional and nonfinite IDs', () => {
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for (const value of [9_007_199_254_740_992n, 9_007_199_254_740_993n, 1.5, NaN, Infinity]) {
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expect(() => toSafeInteger(value)).toThrow(RangeError);
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}
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});
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});
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