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* Improve test coverage for `super` keyword Add tests for SuperCall and SuperProperty, organized together in the `test/language/expressions/super/` directory. For SuperProperty, include tests for usage from within Object initializers and class bodies because a different set of semantics are observable from each context.
46 lines
1.4 KiB
JavaScript
46 lines
1.4 KiB
JavaScript
// 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-super-keyword
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es6id: 12.3.5
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description: Value of reference returned by SuperProperty (from eval code)
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info: |
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[...]
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4. If the code matched by the syntactic production that is being evaluated is
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strict mode code, let strict be true, else let strict be false.
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5. Return ? MakeSuperPropertyReference(propertyKey, strict).
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12.3.5.3 Runtime Semantics: MakeSuperPropertyReference
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1. Let env be GetThisEnvironment( ).
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2. If env.HasSuperBinding() is false, throw a ReferenceError exception.
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3. Let actualThis be ? env.GetThisBinding().
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4. Let baseValue be ? env.GetSuperBase().
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5. Let bv be ? RequireObjectCoercible(baseValue).
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6. Return a value of type Reference that is a Super Reference whose base
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value component is bv, whose referenced name component is propertyKey,
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whose thisValue component is actualThis, and whose strict reference flag
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is strict.
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---*/
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var fromA, fromB;
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var A = { fromA: 'a', fromB: 'a' };
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var B = { fromB: 'b' };
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Object.setPrototypeOf(B, A);
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var obj = {
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fromA: 'c',
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fromB: 'c',
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method() {
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fromA = eval('super["fromA"];');
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fromB = eval('super["fromB"];');
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}
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};
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Object.setPrototypeOf(obj, B);
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obj.method();
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assert.sameValue(fromA, 'a');
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assert.sameValue(fromB, 'b');
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