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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 --no-always-turbofan --no-stress-flush-code
// Flags: --no-stress-incremental-marking
// Flags: --expose-gc
// Files: test/mjsunit/code-coverage-utils.js
// Test precise code coverage.
(async function () {
// Without precise coverage enabled, we lose coverage data to the GC.
await TestCoverage(
"call an IIFE",
`
(function f() {})();
`,
undefined // The IIFE has been garbage-collected.
);
await TestCoverage(
"call locally allocated function",
`
for (var i = 0; i < 10; i++) {
let f = () => 1;
i += f();
}
`,
undefined
);
// This does not happen with precise coverage enabled.
%DebugTogglePreciseCoverage(true);
await TestCoverage(
"call an IIFE",
`
(function f() {})();
`,
[ {"start":0,"end":20,"count":1},
{"start":1,"end":16,"count":1} ]
);
await TestCoverage(
"call locally allocated function",
`
for (var i = 0; i < 10; i++) {
let f = () => 1;
i += f();
}
`,
[ {"start":0,"end":63,"count":1},
{"start":41,"end":48,"count":5} ]
);
await TestCoverage(
"https://crbug.com/927464",
`
!function f() { // 0000
function unused() { nop(); } // 0100
nop(); // 0150
}(); // 0200
`,
[ {"start":0,"end":199,"count":1},
{"start":1,"end":151,"count":1},
{"start":52,"end":80,"count":0} ]
);
%DebugTogglePreciseCoverage(false);
})();
|
