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* Install test dependencies. * Add initial test files. These files were created using a simplistic AST manipulator using `recast` to preserve formatting. There's bound to be a huge chunk of errors, but this serves as a good start. QUnit was replaced with Mocha, with ES2015 imports running via `esm`. As far as possible, QUnit-specific syntax has been replaced with Mocha's `describe` and `it`, while the native Node.js `assert` module is used for assertions. Files in the `test` directory ending in `.test.js` will be treated as test files. * Add initial passing files to test run.
105 lines
2.7 KiB
JavaScript
105 lines
2.7 KiB
JavaScript
import assert from 'assert';
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import lodashStable from 'lodash';
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import { MAX_INTEGER, stubTrue } from './utils.js';
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import random from '../random.js';
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describe('random', function() {
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var array = Array(1000);
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it('should return `0` or `1` when no arguments are given', function() {
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var actual = lodashStable.uniq(lodashStable.map(array, function() {
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return random();
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})).sort();
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assert.deepStrictEqual(actual, [0, 1]);
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});
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it('should support a `min` and `max`', function() {
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var min = 5,
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max = 10;
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assert.ok(lodashStable.some(array, function() {
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var result = random(min, max);
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return result >= min && result <= max;
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}));
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});
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it('should support not providing a `max`', function() {
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var min = 0,
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max = 5;
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assert.ok(lodashStable.some(array, function() {
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var result = random(max);
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return result >= min && result <= max;
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}));
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});
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it('should swap `min` and `max` when `min` > `max`', function() {
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var min = 4,
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max = 2,
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expected = [2, 3, 4];
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var actual = lodashStable.uniq(lodashStable.map(array, function() {
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return random(min, max);
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})).sort();
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assert.deepStrictEqual(actual, expected);
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});
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it('should support large integer values', function() {
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var min = Math.pow(2, 31),
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max = Math.pow(2, 62);
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assert.ok(lodashStable.every(array, function() {
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var result = random(min, max);
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return result >= min && result <= max;
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}));
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assert.ok(lodashStable.some(array, function() {
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return random(MAX_INTEGER);
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}));
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});
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it('should coerce arguments to finite numbers', function() {
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var actual = [
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random(NaN, NaN),
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random('1', '1'),
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random(Infinity, Infinity)
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];
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assert.deepStrictEqual(actual, [0, 1, MAX_INTEGER]);
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});
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it('should support floats', function() {
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var min = 1.5,
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max = 1.6,
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actual = random(min, max);
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assert.ok(actual % 1);
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assert.ok(actual >= min && actual <= max);
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});
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it('should support providing a `floating`', function() {
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var actual = random(true);
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assert.ok(actual % 1 && actual >= 0 && actual <= 1);
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actual = random(2, true);
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assert.ok(actual % 1 && actual >= 0 && actual <= 2);
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actual = random(2, 4, true);
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assert.ok(actual % 1 && actual >= 2 && actual <= 4);
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});
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it('should work as an iteratee for methods like `_.map`', function() {
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var array = [1, 2, 3],
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expected = lodashStable.map(array, stubTrue),
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randoms = lodashStable.map(array, random);
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var actual = lodashStable.map(randoms, function(result, index) {
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return result >= 0 && result <= array[index] && (result % 1) == 0;
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});
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assert.deepStrictEqual(actual, expected);
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});
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});
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