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counter.js
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43 lines (34 loc) · 1023 Bytes
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import { Assertion, expect } from 'chai';
class Counter {
constructor() {
this.count = 0;
}
increment() {
this.count += 1;
}
reset() {
this.count = 0;
}
assert(expected, message) {
const count = this.count;
this.reset();
expect(count, message || `Expected ${expected} assertions, counted ${count}`)
.to.equal(expected);
}
assertPromised(expected, message) {
const count = this.count;
this.reset();
return expect(count, message || `Expected ${expected} assertions, counted ${count}`)
.to.eventually.equal(expected);
}
}
const counter = new Counter();
Assertion.addMethod('inc', () => counter.increment());
export function assert(expected = 0, message = '') {
if (!Number.isFinite(expected) || expected < 0) return;
counter.assert(expected, message);
}
export function assertPromised(expected = 0, message = '') {
if (!Number.isFinite(expected) || expected < 0) return Promise.resolve();
return counter.assertPromised(expected, message);
}