awesome-sigmoid/lib/index.test.js

generate sigmoid function flexible and easy

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var _1 = __importDefault(require("."));
var CLOSETO_RANGE = 0.000001;
var closeTo = function (val1, val2) {
    if (Math.abs(val1 - val2) < CLOSETO_RANGE) {
        // both valuse is too close
    }
    else {
        expect(val1).toEqual(val2);
    }
};
describe('test case 1', function () {
    test('test case 1', function () {
        var sigmoid = _1.default({
            center: 0,
            deviation: 1,
            deviation_output: 0.75,
        });
        closeTo(sigmoid(0), 0.5);
        closeTo(sigmoid(1), 0.75);
        closeTo(sigmoid(-1), 0.25);
        closeTo(sigmoid(Infinity), 1);
        closeTo(sigmoid(-Infinity), 0);
    });
    test('test case 2', function () {
        var sigmoid = _1.default({
            center: 50,
            deviation: 40,
            deviation_output: 0.9,
        });
        closeTo(sigmoid(50), 0.5);
        closeTo(sigmoid(90), 0.9);
        closeTo(sigmoid(10), 0.1);
        closeTo(sigmoid(Infinity), 1);
        closeTo(sigmoid(-Infinity), 0);
    });
    test('test case 3', function () {
        var sigmoid = _1.default({
            center: -50,
            deviation: -40,
            deviation_output: 0.1,
        });
        closeTo(sigmoid(-50), 0.5);
        closeTo(sigmoid(-10), 0.9);
        closeTo(sigmoid(-90), 0.1);
        closeTo(sigmoid(Infinity), 1);
        closeTo(sigmoid(-Infinity), 0);
    });
});