| // Copyright 2017 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. |
| |
| // Flags: --allow-natives-syntax --no-always-opt |
| |
| // Test code coverage without explicitly activating it upfront. |
| |
| function GetCoverage(source) { |
| for (var script of %DebugCollectCoverage()) { |
| if (script.script.source == source) return script; |
| } |
| return undefined; |
| } |
| |
| function TestCoverage(name, source, expectation) { |
| source = source.trim(); |
| eval(source); |
| var coverage = GetCoverage(source); |
| var result = JSON.stringify(coverage); |
| print(result); |
| assertEquals(JSON.stringify(expectation), result, name + " failed"); |
| } |
| |
| TestCoverage( |
| "call simple function twice", |
| ` |
| function f() {} |
| f(); |
| f(); |
| `, |
| [{"start":0,"end":25,"count":1}, |
| {"start":0,"end":15,"count":1}] |
| ); |
| |
| TestCoverage( |
| "call arrow function twice", |
| ` |
| var f = () => 1; |
| f(); |
| f(); |
| `, |
| [{"start":0,"end":26,"count":1}, |
| {"start":8,"end":15,"count":1}] |
| ); |
| |
| TestCoverage( |
| "call nested function", |
| ` |
| function f() { |
| function g() {} |
| g(); |
| g(); |
| } |
| f(); |
| f(); |
| `, |
| [{"start":0,"end":58,"count":1}, |
| {"start":0,"end":48,"count":1}, |
| {"start":17,"end":32,"count":1}] |
| ); |
| |
| TestCoverage( |
| "call recursive function", |
| ` |
| function fib(x) { |
| if (x < 2) return 1; |
| return fib(x-1) + fib(x-2); |
| } |
| fib(5); |
| `, |
| [{"start":0,"end":80,"count":1}, |
| {"start":0,"end":72,"count":1}] |
| ); |