Page MenuHomePhorge
Files F4441930

match.js
No OneTemporary
Actions

Size
1 KB
Referenced Files
None
Subscribers
None

match.js
View Options

import { test, summary } from './helpers.js';
console.log('Ant.match Tests\n');
test('match is function', typeof Ant.match, 'function');
test('exact match number', Ant.match(200, {
200: 'ok',
404: 'not found',
}), 'ok');
test('exact match string', Ant.match('hello', {
hello: 'world',
foo: 'bar',
}), 'world');
test('no match returns undefined', Ant.match(999, {
200: 'ok',
404: 'not found',
}), undefined);
test('Symbol.default fallback', Ant.match(999, {
200: 'ok',
[Symbol.default]: 'fallback',
}), 'fallback');
test('Symbol.default as function', Ant.match(999, {
200: 'ok',
[Symbol.default]: v => `unknown ${v}`,
}), 'unknown 999');
test('function arm called with value', Ant.match(200, {
200: v => `got ${v}`,
}), 'got 200');
test('guard arm true', Ant.match(503, {
200: 'ok',
[503 >= 500]: 'server error',
}), 'server error');
test('guard arm false skipped', Ant.match(503, {
[503 < 400]: 'client error',
[Symbol.default]: 'fallback',
}), 'fallback');
test('exact match takes priority over guard', Ant.match(200, {
[true]: 'guard',
200: 'exact',
}), 'exact');
test('arrow function form with $', Ant.match(503, $ => ({
200: 'ok',
404: 'not found',
[$ >= 500]: 'server error',
})), 'server error');
test('arrow $ guard false', Ant.match(200, $ => ({
[$ >= 500]: 'server error',
[Symbol.default]: 'other',
})), 'other');
test('compiler sugar with $', Ant.match(404, {
200: 'ok',
[$ === 404]: 'not found',
[Symbol.default]: 'unknown',
}), 'not found');
test('compiler sugar $ receives value', Ant.match(42, {
[$ > 100]: 'big',
[$ > 0]: 'positive',
[Symbol.default]: 'other',
}), 'positive');
test('plain values not called', Ant.match(1, {
1: 'one',
2: 'two',
}), 'one');
test('mixed plain and function arms', Ant.match(2, {
1: 'one',
2: v => `two-${v}`,
}), 'two-2');
test('empty arms returns undefined', Ant.match(1, {}), undefined);
test('Symbol.default function receives value', Ant.match(42, {
[Symbol.default]: v => v * 2,
}), 84);
summary();

File Metadata

Mime Type
application/javascript
Expires
Sat, May 2, 9:19 AM (1 d, 22 h)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
542197
Default Alt Text
match.js (1 KB)

Event Timeline