"use strict";
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/**
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* @license
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* Copyright 2017 Google Inc. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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var test_util_1 = require("../test_util");
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var rand_1 = require("./rand");
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var rand_util_1 = require("./rand_util");
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function isFloat(n) {
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return Number(n) === n && n % 1 !== 0;
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}
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describe('MPRandGauss', function () {
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var EPSILON = 0.05;
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var SEED = 2002;
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it('should default to float32 numbers', function () {
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var rand = new rand_1.MPRandGauss(0, 1.5);
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expect(isFloat(rand.nextValue())).toBe(true);
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});
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it('should handle a mean/stdv of float32 numbers', function () {
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var rand = new rand_1.MPRandGauss(0, 1.5, 'float32', false /* truncated */, SEED);
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var values = [];
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var size = 10000;
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for (var i = 0; i < size; i++) {
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values.push(rand.nextValue());
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}
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rand_util_1.expectArrayInMeanStdRange(values, 0, 1.5, EPSILON);
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rand_util_1.jarqueBeraNormalityTest(values);
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});
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it('should handle int32 numbers', function () {
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var rand = new rand_1.MPRandGauss(0, 1, 'int32');
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expect(isFloat(rand.nextValue())).toBe(false);
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});
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it('should handle a mean/stdv of int32 numbers', function () {
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var rand = new rand_1.MPRandGauss(0, 2, 'int32', false /* truncated */, SEED);
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var values = [];
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var size = 10000;
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for (var i = 0; i < size; i++) {
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values.push(rand.nextValue());
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}
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rand_util_1.expectArrayInMeanStdRange(values, 0, 2, EPSILON);
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rand_util_1.jarqueBeraNormalityTest(values);
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});
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it('Should not have a more than 2x std-d from mean for truncated values', function () {
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var stdv = 1.5;
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var rand = new rand_1.MPRandGauss(0, stdv, 'float32', true /* truncated */);
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for (var i = 0; i < 1000; i++) {
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expect(Math.abs(rand.nextValue())).toBeLessThan(stdv * 2);
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}
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});
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});
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describe('RandGamma', function () {
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var SEED = 2002;
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it('should default to float32 numbers', function () {
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var rand = new rand_1.RandGamma(2, 2, 'float32');
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expect(isFloat(rand.nextValue())).toBe(true);
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});
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it('should handle an alpha/beta of float32 numbers', function () {
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var rand = new rand_1.RandGamma(2, 2, 'float32', SEED);
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var values = [];
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var size = 10000;
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for (var i = 0; i < size; i++) {
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values.push(rand.nextValue());
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}
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test_util_1.expectValuesInRange(values, 0, 30);
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});
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it('should handle int32 numbers', function () {
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var rand = new rand_1.RandGamma(2, 2, 'int32');
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expect(isFloat(rand.nextValue())).toBe(false);
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});
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it('should handle an alpha/beta of int32 numbers', function () {
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var rand = new rand_1.RandGamma(2, 2, 'int32', SEED);
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var values = [];
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var size = 10000;
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for (var i = 0; i < size; i++) {
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values.push(rand.nextValue());
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}
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test_util_1.expectValuesInRange(values, 0, 30);
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});
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});
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describe('UniformRandom', function () {
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it('float32, no seed', function () {
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var min = 0.2;
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var max = 0.24;
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var dtype = 'float32';
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var xs = [];
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for (var i = 0; i < 10; ++i) {
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var rand = new rand_1.UniformRandom(min, max, dtype);
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var x = rand.nextValue();
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xs.push(x);
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}
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expect(Math.min.apply(Math, xs)).toBeGreaterThanOrEqual(min);
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expect(Math.max.apply(Math, xs)).toBeLessThan(max);
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});
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it('int32, no seed', function () {
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var min = 13;
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var max = 37;
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var dtype = 'int32';
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var xs = [];
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for (var i = 0; i < 10; ++i) {
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var rand = new rand_1.UniformRandom(min, max, dtype);
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var x = rand.nextValue();
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expect(Number.isInteger(x)).toEqual(true);
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xs.push(x);
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}
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expect(Math.min.apply(Math, xs)).toBeGreaterThanOrEqual(min);
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expect(Math.max.apply(Math, xs)).toBeLessThanOrEqual(max);
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});
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it('seed is number', function () {
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var min = -1.2;
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var max = -0.4;
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var dtype = 'float32';
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var seed = 1337;
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var xs = [];
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for (var i = 0; i < 10; ++i) {
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var rand = new rand_1.UniformRandom(min, max, dtype, seed);
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var x = rand.nextValue();
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expect(x).toBeGreaterThanOrEqual(min);
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expect(x).toBeLessThan(max);
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xs.push(x);
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}
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// Assert deterministic results.
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expect(Math.min.apply(Math, xs)).toEqual(Math.max.apply(Math, xs));
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});
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it('seed === null', function () {
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var min = 0;
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var max = 1;
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var dtype = 'float32';
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var seed = null;
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var rand = new rand_1.UniformRandom(min, max, dtype, seed);
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var x = rand.nextValue();
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expect(x).toBeGreaterThanOrEqual(0);
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expect(x).toBeLessThan(1);
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});
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it('seed === undefined', function () {
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var min = 0;
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var max = 1;
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var dtype = 'float32';
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var seed = undefined;
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var rand = new rand_1.UniformRandom(min, max, dtype, seed);
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var x = rand.nextValue();
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expect(x).toBeGreaterThanOrEqual(0);
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expect(x).toBeLessThan(1);
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});
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});
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//# sourceMappingURL=rand_test.js.map
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