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code-coverage-block-async.js
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code-coverage-block-async.js
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// Copyright 2019 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 --no-stress-flush-bytecode
// Flags: --no-stress-incremental-marking
// Files: test/mjsunit/code-coverage-utils.js
%DebugToggleBlockCoverage(true);
TestCoverage(
"await expressions",
`
async function f() { // 0000
await 42; // 0050
await 42; // 0100
}; // 0150
f(); // 0200
%PerformMicrotaskCheckpoint(); // 0250
`,
[{"start":0,"end":299,"count":1},
{"start":0,"end":151,"count":1}]
);
TestCoverage(
"for-await-of statements",
`
!async function() { // 0000
for await (var x of [0,1,2,3]) { // 0050
nop(); // 0100
} // 0150
}(); // 0200
%PerformMicrotaskCheckpoint(); // 0250
`,
[{"start":0,"end":299,"count":1},
{"start":1,"end":201,"count":1},
{"start":83,"end":153,"count":4}]
);
TestCoverage(
"https://crbug.com/981313",
`
class Foo { // 0000
async timeout() { // 0000
return new Promise( // 0100
(r) => setTimeout(r, 10)); // 0000
} // 0200
} // 0000
new Foo().timeout(); // 0300
`,
[ {"start":0, "end":349, "count":1},
{"start":52, "end":203, "count":1},
{"start":158,"end":182, "count":1}]);
TestCoverage(
"test async generator coverage",
`
class Foo { // 0000
async *timeout() { // 0000
return new Promise( // 0100
(r) => setTimeout(r, 10)); // 0000
} // 0200
} // 0000
new Foo().timeout(); // 0300
`,
[ {"start":0, "end":349, "count":1},
{"start":52, "end":203, "count":1},
{"start":158,"end":182, "count":0}]);
TestCoverage(
"test async generator coverage with next call",
`
class Foo { // 0000
async *timeout() { // 0000
return new Promise( // 0100
(r) => setTimeout(r, 10)); // 0000
} // 0200
} // 0000
new Foo().timeout().next(); // 0300
`,
[ {"start":0, "end":349, "count":1},
{"start":52, "end":203, "count":1},
{"start":158,"end":182, "count":1}]);
TestCoverage(
"test two consecutive returns",
`
class Foo { // 0000
timeout() { // 0000
return new Promise( // 0100
(r) => setTimeout(r, 10)); // 0000
return new Promise( // 0200
(r) => setTimeout(r, 10)); // 0000
} // 0300
} // 0000
new Foo().timeout(); // 0400
`,
[ {"start":0,"end":449,"count":1},
{"start":52,"end":303,"count":1},
{"start":184,"end":302,"count":0},
{"start":158,"end":182,"count":1}] );
TestCoverage(
"test async generator with two consecutive returns",
`
class Foo { // 0000
async *timeout() { // 0000
return new Promise( // 0100
(r) => setTimeout(r, 10)); // 0000
return new Promise( // 0200
(r) => setTimeout(r, 10)); // 0000
} // 0300
} // 0000
new Foo().timeout().next(); // 0400
`,
[ {"start":0,"end":449,"count":1},
{"start":52,"end":303,"count":1},
{"start":184,"end":302,"count":0},
{"start":158,"end":182,"count":1}] );
TestCoverage(
"https://crbug.com/v8/9952",
`
async function test(foo) { // 0000
return {bar}; // 0050
// 0100
function bar() { // 0150
console.log("test"); // 0200
} // 0250
} // 0300
test().then(r => r.bar()); // 0350
%PerformMicrotaskCheckpoint(); // 0400`,
[{"start":0,"end":449,"count":1},
{"start":0,"end":301,"count":1},
{"start":152,"end":253,"count":1},
{"start":362,"end":374,"count":1}]);
TestCoverage(
"https://crbug.com/v8/10628",
`
async function abc() { // 0000
try { // 0050
return 'abc'; // 0100
} finally { // 0150
console.log('in finally'); // 0200
} // 0250
} // 0300
abc(); // 0350
%PerformMicrotaskCheckpoint(); // 0400
`,
[{"start":0,"end":449,"count":1},
{"start":0,"end":301,"count":1}]);
TestCoverage(
"try/catch/finally statements async",
`
!async function() { // 0000
try { nop(); } catch (e) { nop(); } // 0050
try { nop(); } finally { nop(); } // 0100
try { // 0150
try { throw 42; } catch (e) { nop(); }// 0200
} catch (e) { nop(); } // 0250
try { // 0300
try { throw 42; } finally { nop(); } // 0350
} catch (e) { nop(); } // 0400
try { // 0450
throw 42; // 0500
} catch (e) { // 0550
nop(); // 0600
} finally { // 0650
nop(); // 0700
} // 0750
}(); // 0800
`,
[{"start":0,"end":849,"count":1},
{"start":1,"end":801,"count":1},
{"start":67,"end":87,"count":0},
{"start":254,"end":274,"count":0}]
);
TestCoverage("try/catch/finally statements with early return async",
`
!async function() { // 0000
try { throw 42; } catch (e) { return; } // 0050
nop(); // 0100
}(); // 0150
!async function() { // 0200
try { throw 42; } catch (e) {} // 0250
finally { return; } // 0300
nop(); // 0350
}(); // 0400
`,
[{"start":0,"end":449,"count":1},
{"start":1,"end":151,"count":1},
{"start":91,"end":150,"count":0},
{"start":201,"end":401,"count":1},
{"start":321,"end":400,"count":0}]
);
%DebugToggleBlockCoverage(false);