japa/build/src/Assert/index.js

Lean test runner for Node.js

"use strict";
/**
 * @module Core
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.Assert = void 0;
/*
 * japa
 *
 * (c) Harminder Virk <virk@adonisjs.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
*/
const chai_1 = require("chai");
const Exceptions_1 = require("../Exceptions");
/**
 * The assert interface to run assertions using chaijs.
 * This class is a thin wrapper over [chaijs#assert](http://www.chaijs.com/api/assert/) allowing
 * assertion planning and all existing methods from chaijs are supported.
 *
 * The API doesn't cover all the methods. However, all methods from the chaiJs assert syntax are
 * supported.
 */
class Assert {
    constructor() {
        // config.includeStack = true
        this._counts = 0;
        this._plannedCounts = 0;
        return new Proxy(this, {
            get(target, name, receiver) {
                if (typeof (target[name]) !== 'undefined') {
                    return Reflect.get(target, name, receiver);
                }
                /* istanbul ignore else */
                if (typeof (chai_1.assert[name]) !== 'undefined') {
                    target._counts++;
                }
                return Reflect.get(chai_1.assert, name, receiver);
            },
        });
    }
    /**
     * Use chai plugins
     */
    static use(fn) {
        return (0, chai_1.use)(fn);
    }
    /**
     * Plan for assertions
     */
    plan(count) {
        this._plannedCounts = count;
    }
    /**
     * Evaluate whether assertions count matches the
     * planned counts or not.
     */
    evaluate() {
        if (this._plannedCounts && this._plannedCounts !== this._counts) {
            const suffix = this._plannedCounts === 1 ? '' : 's';
            const message = `Planned for ${this._plannedCounts} assertion${suffix}, but ran ${this._counts}`;
            throw new Exceptions_1.InvalidAssertionsCount(message);
        }
    }
}
exports.Assert = Assert;