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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.
57 lines
1.7 KiB
JavaScript
57 lines
1.7 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: SuperProperty's behavior as a strict reference
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info: |
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1. Let propertyKey be StringValue of IdentifierName.
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2. 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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3. 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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6.2.3.2 PutValue
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[...]
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5. If IsUnresolvableReference(V) is true, then
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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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[...]
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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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flags: [onlyStrict]
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---*/
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var caught;
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var obj = {
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method() {
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super.x = 8;
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Object.freeze(obj);
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try {
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super.y = 9;
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} catch (err) {
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caught = err;
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}
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}
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};
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obj.method();
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assert.sameValue(typeof caught, 'object');
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assert.sameValue(caught.constructor, TypeError);
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