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if (typeof module !== 'undefined') {
var assert = require('assert');
var sinon = require('sinon');
var _ = require('lodash');
var faker = require('../index');
}
describe("random.js", function () {
describe("number", function() {
it("returns a random number given a maximum value as Number", function() {
var max = 10;
assert.ok(faker.random.number(max) <= max);
});
it("returns a random number given a maximum value as Object", function() {
var options = { max: 10 };
assert.ok(faker.random.number(options) <= options.max);
});
it("returns a random number given a maximum value of 0", function() {
var options = { max: 0 };
assert.ok(faker.random.number(options) === 0);
});
it("returns a random number given a negative number minimum and maximum value of 0", function() {
var options = { min: -100, max: 0 };
assert.ok(faker.random.number(options) <= options.max);
});
it("returns a random number between a range", function() {
var options = { min: 22, max: 33 };
for(var i = 0; i < 100; i++) {
var randomNumber = faker.random.number(options);
assert.ok(randomNumber >= options.min);
assert.ok(randomNumber <= options.max);
}
});
it("provides numbers with a given precision", function() {
var options = { min: 0, max: 1.5, precision: 0.5 };
var results = _.chain(_.range(50))
.map(function() {
return faker.random.number(options);
})
.uniq()
.value()
.sort();
assert.ok(_.includes(results, 0.5));
assert.ok(_.includes(results, 1.0));
assert.equal(results[0], 0);
assert.equal(_.last(results), 1.5);
});
it("provides numbers with a with exact precision", function() {
var options = { min: 0.5, max: 0.99, precision: 0.01 };
for(var i = 0; i < 100; i++) {
var number = faker.random.number(options);
assert.equal(number, Number(number.toFixed(2)));
}
});
it("should not modify the input object", function() {
var min = 1;
var max = 2;
var opts = {
min: min,
max: max
};
faker.random.number(opts);
assert.equal(opts.min, min);
assert.equal(opts.max, max);
});
it('should return deterministic results when seeded', function() {
faker.seed(100);
var name = faker.name.findName();
assert.equal(name, 'Dulce Jenkins');
})
});
describe('arrayElement', function() {
it('returns a random element in the array', function() {
var testArray = ['hello', 'to', 'you', 'my', 'friend'];
assert.ok(testArray.indexOf(faker.random.arrayElement(testArray)) > -1);
});
it('returns a random element in the array when there is only 1', function() {
var testArray = ['hello'];
assert.ok(testArray.indexOf(faker.random.arrayElement(testArray)) > -1);
});
});
describe('UUID', function() {
it('should generate a valid UUID', function() {
var UUID = faker.random.uuid();
var RFC4122 = /^[0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/;
assert.ok(RFC4122.test(UUID));
})
})
describe('boolean', function() {
it('should generate a boolean value', function() {
var bool = faker.random.boolean();
assert.ok(typeof bool == 'boolean');
});
});
describe('semver', function() {
var semver = faker.system.semver();
it('should generate a string', function() {
assert.ok(typeof semver === 'string');
});
it('should generate a valid semver', function() {
assert.ok(/^\d+\.\d+\.\d+$/.test(semver));
});
});
describe('alphaNumeric', function() {
var alphaNumeric = faker.random.alphaNumeric;
it('should generate single character when no additional argument was provided', function() {
assert.ok(alphaNumeric().length === 1);
})
it('should generate many random characters', function() {
assert.ok(alphaNumeric(5).length === 5);
})
})
describe('hexaDecimal', function() {
var hexaDecimal = faker.random.hexaDecimal;
it('should generate single hex character when no additional argument was provided', function() {
var hex = hexaDecimal();
assert.ok(hex.match(/^(0x)[0-9a-f]{1}$/i));
})
it('should generate a random hex string', function() {
var hex = hexaDecimal(5);
assert.ok(hex.match(/^(0x)[0-9a-f]+$/i));
})
})
});
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