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