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Diffstat (limited to 'js/src/tests/test262/language/statements/class/elements/privatefieldadd-typeerror.js')
-rw-r--r-- | js/src/tests/test262/language/statements/class/elements/privatefieldadd-typeerror.js | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/privatefieldadd-typeerror.js b/js/src/tests/test262/language/statements/class/elements/privatefieldadd-typeerror.js new file mode 100644 index 0000000000..6bd7feb092 --- /dev/null +++ b/js/src/tests/test262/language/statements/class/elements/privatefieldadd-typeerror.js @@ -0,0 +1,63 @@ +// Copyright (C) 2017 Valerie Young. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +description: Class construction should error if attempting to add private field twice +esid: sec-ecmascript-function-objects-construct-argumentslist-newtarget +info: | + [[Construct]] ( argumentsList, newTarget) + ... + 8. If kind is "base", then + a. Perform OrdinaryCallBindThis(F, calleeContext, thisArgument). + b. Let result be InitializeInstanceFields(thisArgument, F). + c. If result is an abrupt completion, then + i. Remove calleeContext from execution context stack and restore callerContext as the running execution context. + ii. Return Completion(result). + + InitializeInstanceFields ( O, constructor ) + 1. Assert: Type ( O ) is Object. + 2. Assert: Assert constructor is an ECMAScript function object. + 3. Let fieldRecords be the value of constructor's [[Fields]] internal slot. + 4. For each item fieldRecord in order from fieldRecords, + a. Perform ? DefineField(O, fieldRecord). + 5. Return. + + DefineField(receiver, fieldRecord) + ... + 8. If fieldName is a Private Name, + a. Perform ? PrivateFieldAdd(fieldName, receiver, initValue). + + PrivateFieldAdd (P, O, value) + 1. Assert: P is a Private Name value. + 2. If O is not an object, throw a TypeError exception. + 3. Let entry be PrivateFieldFind(P, O). + 4. If entry is not empty, throw a TypeError exception. + ... + +features: [class, class-fields-private] +---*/ + + +class A { + constructor(arg) { + return arg; + } +} + +class C extends A { + #x; + + constructor(arg) { + super(arg); + } +} + +var containsprivatex = new C(); + +assert.throws(TypeError, function() { + // After the super call in C's constructor, the `this` value in C will + // already have "#x" in it's [[PrivateFieldValues]] + new C(containsprivatex); +}) + +reportCompare(0, 0); |