Paul Nothaft
49 lines
2.1 KiB
JavaScript
49 lines
2.1 KiB
JavaScript
/**
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* Regression tests for clampIntOrUndefined — the slideshow-seed NaN bug.
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*
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* The event-create route seeds show_interval_ms/show_transition_ms from
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* app_settings via an int-parse-and-clamp. The old inline guard
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* (`Number.isFinite(+v) ? parseInt(v) : undefined`) disagreed with itself
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* for null/''/true: `+null` is 0 (finite) but `parseInt(null)` is NaN, so
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* NaN flowed through Math.min/Math.max into the INSERT. PostgreSQL
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* rejects NaN for integer columns ("invalid input syntax for type
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* integer: NaN") while SQLite silently stores NULL — so POST
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* /api/admin/events 500'd on PG whenever the slideshow settings rows
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* were absent (getAppSetting returns its null default).
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*/
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const { clampIntOrUndefined } = require('../../src/utils/numericHelpers');
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describe('clampIntOrUndefined', () => {
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it('returns undefined for null (the getAppSetting missing-row default)', () => {
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expect(clampIntOrUndefined(null, 1000, 120000)).toBeUndefined();
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});
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it('returns undefined for undefined, empty string, and booleans', () => {
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expect(clampIntOrUndefined(undefined, 1000, 120000)).toBeUndefined();
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expect(clampIntOrUndefined('', 1000, 120000)).toBeUndefined();
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expect(clampIntOrUndefined(true, 1000, 120000)).toBeUndefined();
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expect(clampIntOrUndefined(false, 1000, 120000)).toBeUndefined();
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});
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it('returns undefined for non-numeric garbage', () => {
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expect(clampIntOrUndefined('fast', 1000, 120000)).toBeUndefined();
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expect(clampIntOrUndefined({}, 1000, 120000)).toBeUndefined();
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});
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it('never returns NaN for any of the failure-mode inputs', () => {
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for (const v of [null, undefined, '', true, false, 'x', {}, []]) {
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const out = clampIntOrUndefined(v, 100, 5000);
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expect(Number.isNaN(out)).toBe(false);
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}
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});
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it('parses and clamps valid values', () => {
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expect(clampIntOrUndefined('2500', 1000, 120000)).toBe(2500);
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expect(clampIntOrUndefined(2500, 1000, 120000)).toBe(2500);
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expect(clampIntOrUndefined('500', 1000, 120000)).toBe(1000);
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expect(clampIntOrUndefined(999999, 1000, 120000)).toBe(120000);
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expect(clampIntOrUndefined('2500.9', 1000, 120000)).toBe(2500);
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});
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});
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