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62719c5fd2
PR-URL: https://github.com/nodejs/node/pull/40178 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
114 lines
3.6 KiB
JavaScript
114 lines
3.6 KiB
JavaScript
// Copyright 2020 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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/**
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* @fileoverview Regression tests.
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*/
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'use strict';
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const assert = require('assert');
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const { execSync } = require("child_process");
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const fs = require('fs');
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const sinon = require('sinon');
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const tempfile = require('tempfile');
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const tempy = require('tempy');
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const exceptions = require('../exceptions.js');
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const helpers = require('./helpers.js');
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const scriptMutator = require('../script_mutator.js');
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const sandbox = sinon.createSandbox();
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const SYNTAX_ERROR_RE = /.*SyntaxError.*/
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function createFuzzTest(fake_db, settings, inputFiles) {
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const sources = inputFiles.map(input => helpers.loadTestData(input));
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const mutator = new scriptMutator.ScriptMutator(settings, fake_db);
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const result = mutator.mutateMultiple(sources);
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const output_file = tempfile('.js');
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fs.writeFileSync(output_file, result.code);
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return output_file;
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}
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function execFile(jsFile) {
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execSync("node " + jsFile, {stdio: ['pipe']});
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}
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describe('Regression tests', () => {
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beforeEach(() => {
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helpers.deterministicRandom(sandbox);
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this.settings = {
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ADD_VAR_OR_OBJ_MUTATIONS: 0.0,
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MUTATE_CROSSOVER_INSERT: 0.0,
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MUTATE_EXPRESSIONS: 0.0,
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MUTATE_FUNCTION_CALLS: 0.0,
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MUTATE_NUMBERS: 0.0,
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MUTATE_VARIABLES: 0.0,
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engine: 'V8',
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testing: true,
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}
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});
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afterEach(() => {
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sandbox.restore();
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});
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it('combine strict and with', () => {
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// Test that when a file with "use strict" is used in the inputs,
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// the result is only strict if no other file contains anything
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// prohibited in strict mode (here a with statement).
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// It is assumed that such input files are marked as sloppy in the
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// auto generated exceptions.
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sandbox.stub(exceptions, 'getGeneratedSloppy').callsFake(
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() => { return new Set(['regress/strict/input_with.js']); });
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const file = createFuzzTest(
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'test_data/regress/strict/db',
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this.settings,
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['regress/strict/input_strict.js', 'regress/strict/input_with.js']);
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execFile(file);
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});
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it('combine strict and delete', () => {
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// As above with unqualified delete.
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sandbox.stub(exceptions, 'getGeneratedSloppy').callsFake(
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() => { return new Set(['regress/strict/input_delete.js']); });
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const file = createFuzzTest(
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'test_data/regress/strict/db',
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this.settings,
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['regress/strict/input_strict.js', 'regress/strict/input_delete.js']);
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execFile(file);
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});
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it('mutates negative value', () => {
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// This tests that the combination of number, function call and expression
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// mutator does't produce an update expression.
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// Previously the 1 in -1 was replaced with another negative number leading
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// to e.g. -/*comment/*-2. Then cloning the expression removed the
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// comment and produced --2 in the end.
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this.settings['MUTATE_NUMBERS'] = 1.0;
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this.settings['MUTATE_FUNCTION_CALLS'] = 1.0;
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this.settings['MUTATE_EXPRESSIONS'] = 1.0;
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const file = createFuzzTest(
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'test_data/regress/numbers/db',
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this.settings,
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['regress/numbers/input_negative.js']);
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execFile(file);
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});
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it('mutates indices', () => {
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// Test that indices are not replaced with a negative number causing a
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// syntax error (e.g. {-1: ""}).
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this.settings['MUTATE_NUMBERS'] = 1.0;
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const file = createFuzzTest(
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'test_data/regress/numbers/db',
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this.settings,
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['regress/numbers/input_indices.js']);
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execFile(file);
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});
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});
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