| // Copyright 2020 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| /** |
| * @fileoverview Tests for mutating variables |
| */ |
| |
| 'use strict'; |
| |
| const babelTypes = require('@babel/types'); |
| const sinon = require('sinon'); |
| |
| const common = require('../mutators/common.js'); |
| const helpers = require('./helpers.js'); |
| const scriptMutator = require('../script_mutator.js'); |
| const sourceHelpers = require('../source_helpers.js'); |
| const numberMutator = require('../mutators/number_mutator.js'); |
| const random = require('../random.js'); |
| |
| const sandbox = sinon.createSandbox(); |
| |
| describe('Mutate numbers', () => { |
| beforeEach(() => { |
| sandbox.stub(common, 'nearbyRandomNumber').callsFake( |
| () => { return babelTypes.numericLiteral(-3) }); |
| sandbox.stub(common, 'randomInterestingNumber').callsFake( |
| () => { return babelTypes.numericLiteral(-4) }); |
| sandbox.stub(random, 'randInt').callsFake(() => { return -5 }); |
| |
| // Interesting cases from number mutator. |
| const interestingProbs = [0.009, 0.05, 0.5]; |
| sandbox.stub(random, 'random').callsFake( |
| helpers.cycleProbabilitiesFun(interestingProbs)); |
| }); |
| |
| afterEach(() => { |
| sandbox.restore(); |
| }); |
| |
| it('test', () => { |
| const source = helpers.loadTestData('mutate_numbers.js'); |
| |
| const settings = scriptMutator.defaultSettings(); |
| settings['MUTATE_NUMBERS'] = 1.0; |
| |
| const mutator = new numberMutator.NumberMutator(settings); |
| mutator.mutate(source); |
| |
| const mutated = sourceHelpers.generateCode(source); |
| helpers.assertExpectedResult( |
| 'mutate_numbers_expected.js', mutated); |
| }); |
| }); |