Add tests for Reflect.construct

This commit is contained in:
Leonardo Balter 2015-07-28 16:03:14 -04:00
parent bdcf4fd877
commit 980e50441f
9 changed files with 234 additions and 0 deletions

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Return abrupt if argumentsList is not an ArrayLike object.
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
...
4. Let args be CreateListFromArrayLike(argumentsList).
5. ReturnIfAbrupt(args).
...
7.3.17 CreateListFromArrayLike (obj [, elementTypes] )
...
3. If Type(obj) is not Object, throw a TypeError exception.
4. Let len be ToLength(Get(obj, "length")).
5. ReturnIfAbrupt(len).
...
---*/
function fn() {}
var o = {};
Object.defineProperty(o, 'length', {
get: function() {
throw new Test262Error();
}
});
assert.throws(Test262Error, function() {
Reflect.construct(fn, o);
});
assert.throws(TypeError, function() {
Reflect.construct(fn, 1);
});

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Reflect.construct is configurable, writable and not enumerable.
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
17 ECMAScript Standard Built-in Objects
includes: [propertyHelper.js]
---*/
verifyNotEnumerable(Reflect, 'construct');
verifyWritable(Reflect, 'construct');
verifyConfigurable(Reflect, 'construct');

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Reflect.construct.length value and property descriptor
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
The length property of the construct function is 2.
includes: [propertyHelper.js]
---*/
assert.sameValue(
Reflect.construct.length, 2,
'The value of `Reflect.construct.length` is `2`'
);
verifyNotEnumerable(Reflect.construct, 'length');
verifyNotWritable(Reflect.construct, 'length');
verifyConfigurable(Reflect.construct, 'length');

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Reflect.construct.name value and property descriptor
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
17 ECMAScript Standard Built-in Objects
includes: [propertyHelper.js]
---*/
assert.sameValue(
Reflect.construct.name, 'construct',
'The value of `Reflect.construct.name` is `"construct"`'
);
verifyNotEnumerable(Reflect.construct, 'name');
verifyNotWritable(Reflect.construct, 'name');
verifyConfigurable(Reflect.construct, 'name');

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Throws a TypeError if `newTarget` is not a constructor.
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
...
2. If newTarget is not present, let newTarget be target.
3. Else, if IsConstructor(newTarget) is false, throw a TypeError exception.
...
---*/
assert.throws(TypeError, function() {
Reflect.construct(function() {}, [], 1);
});
assert.throws(TypeError, function() {
Reflect.construct(function() {}, [], null);
});
assert.throws(TypeError, function() {
Reflect.construct(function() {}, [], {});
});
assert.throws(TypeError, function() {
Reflect.construct(function() {}, [], Date.now);
});

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Return target result using newTarget argument.
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
...
2. If newTarget is not present, let newTarget be target.
...
6. Return Construct(target, args, newTarget).
---*/
var o = {};
var internPrototype;
function fn() {
this.o = o;
internPrototype = Object.getPrototypeOf(this);
}
var result = Reflect.construct(fn, [], Array);
assert.sameValue(Object.getPrototypeOf(result), Array.prototype);
assert.sameValue(
internPrototype, Array.prototype,
'prototype of this from within the constructor function is Array.prototype'
);
assert.sameValue(result.o, o);

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Return target result
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
...
2. If newTarget is not present, let newTarget be target.
...
6. Return Construct(target, args, newTarget).
---*/
var o = {};
function fn() {
this.o = o;
}
var result = Reflect.construct(fn, []);
assert.sameValue(result.o, o);
assert(result instanceof fn);

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Throws a TypeError if `target` is not a constructor.
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
1. If IsConstructor(target) is false, throw a TypeError exception.
---*/
assert.throws(TypeError, function() {
Reflect.construct(1, []);
});
assert.throws(TypeError, function() {
Reflect.construct(null, []);
});
assert.throws(TypeError, function() {
Reflect.construct({}, []);
});
assert.throws(TypeError, function() {
Reflect.construct(Date.now, []);
});

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.2
description: >
Construct with given argumentsList
info: >
26.1.2 Reflect.construct ( target, argumentsList [, newTarget] )
...
2. If newTarget is not present, let newTarget be target.
...
6. Return Construct(target, args, newTarget).
---*/
function fn() {
this.args = arguments;
}
var result = Reflect.construct(fn, [42, 'Mike', 'Leo']);
assert.sameValue(result.args.length, 3, 'result.args.length');
assert.sameValue(result.args[0], 42);
assert.sameValue(result.args[1], 'Mike');
assert.sameValue(result.args[2], 'Leo');