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652e35bd32
Assert the behavior of the built-in method on the FunctionPrototype and the usage of the Symbol by the `instanceof` operator.
33 lines
871 B
JavaScript
33 lines
871 B
JavaScript
// Copyright (C) Copyright 2015 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 12.9.4
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description: >
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Arguments and 'this' value when invoking constructor's @@hasInstance property
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info: >
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1. If Type(C) is not Object, throw a TypeError exception.
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2. Let instOfHandler be GetMethod(C,@@hasInstance).
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3. ReturnIfAbrupt(instOfHandler).
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4. If instOfHandler is not undefined, then
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a. Return ToBoolean(Call(instOfHandler, C, «O»)).
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features: [Symbol.hasInstance]
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---*/
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var F = {};
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var callCount = 0;
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var thisValue, args;
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F[Symbol.hasInstance] = function() {
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thisValue = this;
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args = arguments;
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callCount += 1;
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};
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0 instanceof F;
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assert.sameValue(callCount, 1);
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assert.sameValue(thisValue, F);
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assert.sameValue(args.length, 1);
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assert.sameValue(args[0], 0);
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