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deps/v8/test/mjsunit/stack-traces-custom.js
66 строк
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Michaël Zasso
deps: update V8 to 9.0.257.11
15 мар 2021, 17:54
Не верифицирован
15 мар 2021, 17:54
732ad99
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// Copyright 2015 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 function testMethodNames(o) { try { o.k = 42; } catch (e) { Error.prepareStackTrace = function(e, frames) { return frames; }; var frames = e.stack; Error.prepareStackTrace = undefined; assertEquals("f", frames[0].getMethodName()); assertEquals(null, frames[1].getMethodName()); assertEquals("h1", frames[2].getMethodName()); assertEquals("j", frames[3].getMethodName()); assertEquals("k", frames[4].getMethodName()); assertEquals("testMethodNames", frames[5].getMethodName()); } } var o = { f: function() { throw new Error(); }, get j() { o.h1(); }, set k(_) { o.j; }, }; const duplicate = function() { o.f() } o.g1 = duplicate; o.g2 = duplicate; o.h1 = function() { o.g1() } o.h2 = o.h1; // Test in dictionary mode first. assertFalse(%HasFastProperties(o)); testMethodNames(o); // Same test but with fast mode object. o = %ToFastProperties(o); assertTrue(%HasFastProperties(o)); testMethodNames(o); function testMethodName(f, frameNumber, expectedName) { try { Error.prepareStackTrace = function(e, frames) { return frames; } f(); assertUnreachable(); } catch (e) { const frame = e.stack[frameNumber]; assertEquals(expectedName, frame.getMethodName()); } finally { Error.prepareStackTrace = undefined; } } const thrower = { valueOf: () => { throw new Error(); }}; { const str = ""; testMethodName(() => { str.indexOf(str, thrower); }, 1, "indexOf"); } { const nr = 42; testMethodName(() => { nr.toString(thrower); }, 1, "toString"); }