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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.
47 lines
1.5 KiB
JavaScript
47 lines
1.5 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 arrow function)
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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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features: [class, arrow-function]
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---*/
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var fromA, fromB;
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class A {}
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class B extends A {}
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class C extends B {
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method() {
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fromA = (() => { return super['fromA']; })();
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fromB = (() => { return super['fromB']; })();
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}
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}
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A.prototype.fromA = 'a';
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A.prototype.fromB = 'a';
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B.prototype.fromB = 'b';
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C.prototype.fromA = 'c';
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C.prototype.fromB = 'c';
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C.prototype.method();
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assert.sameValue(fromA, 'a');
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assert.sameValue(fromB, 'b');
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