c39123dd53
The inspector uses V8's API handles and should not access V8 internals. This change makes sure it can use the coverage data in an encapsulated way. R=jgruber@chromium.org, kozyatinskiy@chromium.org BUG=v8:5808 Review-Url: https://codereview.chromium.org/2696163002 Cr-Commit-Position: refs/heads/master@{#43231}
106 lines
1.8 KiB
JavaScript
106 lines
1.8 KiB
JavaScript
// 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.toplevel;
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}
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return undefined;
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}
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function ApplyCoverageToSource(source, range) {
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var content = "";
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var cursor = range.start;
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if (range.inner) for (var inner of range.inner) {
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content += source.substring(cursor, inner.start);
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content += ApplyCoverageToSource(source, inner);
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cursor = inner.end;
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}
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content += source.substring(cursor, range.end);
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return `[${content}](${range.name}:${range.count})`;
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}
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function TestCoverage(name, source, expectation) {
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source = source.trim();
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expectation = expectation.trim();
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eval(source);
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var coverage = GetCoverage(source);
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var result = ApplyCoverageToSource(source, coverage);
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print(result);
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assertEquals(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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`
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[[function f() {}](f:2)
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f();
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f();](:1)
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`
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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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`
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[var f = [() => 1](f:2);
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f();
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f();](:1)
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`
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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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`
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[[function f() {
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[function g() {}](g:4)
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g();
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g();
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}](f:2)
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f();
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f();](:1)
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`
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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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`
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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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}](fib:15)
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fib(5);](:1)
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`
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);
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