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Add tests for object coercion of Reference base (#646)
Occurs that when a PutValue or GetValue operation is applied to a property reference with a primitive base, the base is first coerced to an Object.
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// Copyright (C) 2016 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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esid: sec-getvalue
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es6id: 6.2.3.1
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description: >
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When the base of a property reference is primitive, it is coerced to an
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object during value retrieval
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info: >
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[...]
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5. If IsPropertyReference(V) is true, then
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a. If HasPrimitiveBase(V) is true, then
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i. Assert: In this case, base will never be null or undefined.
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ii. Let base be ToObject(base).
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b. Return ? base.[[Get]](GetReferencedName(V), GetThisValue(V)).
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features: [Symbol]
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---*/
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Number.prototype.test262 = 'number prototype';
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assert.sameValue(1..test262, 'number prototype');
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String.prototype.test262 = 'string prototype';
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assert.sameValue(''.test262, 'string prototype');
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Boolean.prototype.test262 = 'Boolean prototype';
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assert.sameValue(true.test262, 'Boolean prototype');
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Symbol.prototype.test262 = 'Symbol prototype';
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assert.sameValue(Symbol().test262, 'Symbol prototype');
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// Copyright (C) 2016 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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esid: sec-putvalue
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es6id: 6.2.3.2
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description: >
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When the base of a property reference is primitive, it is coerced to an
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object during value assignment
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info: >
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[...]
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6. Else if IsPropertyReference(V) is true, then
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a. If HasPrimitiveBase(V) is true, then
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i. Assert: In this case, base will never be null or undefined.
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ii. Set base to ToObject(base).
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b. Let succeeded be ? base.[[Set]](GetReferencedName(V), W,
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GetThisValue(V)).
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c. If succeeded is false and IsStrictReference(V) is true, throw a
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TypeError exception.
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d. Return.
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features: [Symbol, Proxy]
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---*/
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var numberCount = 0;
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var stringCount = 0;
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var booleanCount = 0;
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var symbolCount = 0;
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var spy;
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spy = new Proxy({}, { set: function() { numberCount += 1; return true; } });
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Object.setPrototypeOf(Number.prototype, spy);
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0..test262 = null;
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assert.sameValue(numberCount, 1, 'number');
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spy = new Proxy({}, { set: function() { stringCount += 1; return true; } });
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Object.setPrototypeOf(String.prototype, spy);
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''.test262 = null;
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assert.sameValue(stringCount, 1, 'string');
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spy = new Proxy({}, { set: function() { booleanCount += 1; return true; } });
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Object.setPrototypeOf(Boolean.prototype, spy);
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true.test262 = null;
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assert.sameValue(booleanCount, 1, 'string');
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spy = new Proxy({}, { set: function() { symbolCount += 1; return true; } });
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Object.setPrototypeOf(Symbol.prototype, spy);
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Symbol().test262 = null;
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assert.sameValue(symbolCount, 1, 'string');
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