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// 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
// Flags: --expose-gc
let TestCoverage;
let TestCoverageNoGC;
let nop;
let gen;
!function() {
function GetCoverage(source) {
for (var script of %DebugCollectCoverage()) {
if (script.script === source) return script;
}
return undefined;
};
async function TestCoverageInternal(
name, source, expectation, collect_garbage, prettyPrintResults) {
source = source.trim();
eval(source);
// We need to invoke GC asynchronously, so that it doesn't need to scan
// the stack. Otherwise, some objects may not be reclaimed because of
// conservative stack scanning and the tests may fail.
if (collect_garbage) await gc({ type: 'major', execution: 'async' });
var covfefe = GetCoverage(source);
var stringified_result = JSON.stringify(covfefe);
var stringified_expectation = JSON.stringify(expectation);
const mismatch = stringified_result != stringified_expectation;
if (mismatch) {
console.log(stringified_result.replace(/[}],[{]/g, "},\n {"));
}
if (prettyPrintResults) {
console.log("=== Coverage Expectation ===")
for (const {start,end,count} of expectation) {
console.log(`Range [${start}, ${end}) (count: ${count})`);
console.log(source.substring(start, end));
}
console.log("=== Coverage Results ===")
for (const {start,end,count} of covfefe) {
console.log(`Range [${start}, ${end}) (count: ${count})`);
console.log(source.substring(start, end));
}
console.log("========================")
}
assertEquals(stringified_expectation, stringified_result, name + " failed");
};
TestCoverage = async function(name, source, expectation, prettyPrintResults) {
return TestCoverageInternal(name, source, expectation, true,
prettyPrintResults);
};
TestCoverageNoGC = function(name, source, expectation, prettyPrintResults) {
return TestCoverageInternal(name, source, expectation, false,
prettyPrintResults);
};
nop = function() {};
gen = function*() {
yield 1;
yield 2;
yield 3;
};
}();
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