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mixin.js
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65 lines (46 loc) · 1.89 KB
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import test from 'ava';
import mixin from '../../src/util/mixin';
//-------------------------------------------------------------------------------------------------
test('mixin', t => {
var a = { first: 'Jake', key: 'a' },
b = { last: 'Gordon', key: 'b' };
t.deepEqual(mixin({}, a), { first: 'Jake', key: 'a' });
t.deepEqual(mixin({}, b), { last: 'Gordon', key: 'b' });
t.deepEqual(mixin({}, a, b), { first: 'Jake', last: 'Gordon', key: 'b' });
t.deepEqual(mixin({}, b, a), { first: 'Jake', last: 'Gordon', key: 'a' });
});
//-------------------------------------------------------------------------------------------------
test('mixin only mixes in owned properties', t => {
var MyClass = function(name) { this.name = name }
MyClass.prototype = {
answer: 42
}
var a = new MyClass('a'),
b = new MyClass('b');
t.is(a.name, 'a');
t.is(a.answer, 42);
t.is(b.name, 'b');
t.is(b.answer, 42);
t.is(a.hasOwnProperty('name'), true);
t.is(a.hasOwnProperty('answer'), false);
t.is(b.hasOwnProperty('name'), true);
t.is(b.hasOwnProperty('answer'), false);
t.deepEqual(mixin({}, a), { name: 'a' });
t.deepEqual(mixin({}, b), { name: 'b' });
t.deepEqual(mixin({}, a, b), { name: 'b' });
t.deepEqual(mixin({}, b, a), { name: 'a' });
b.answer = 99;
t.is(a.name, 'a');
t.is(a.answer, 42);
t.is(b.name, 'b');
t.is(b.answer, 99);
t.is(a.hasOwnProperty('name'), true);
t.is(a.hasOwnProperty('answer'), false);
t.is(b.hasOwnProperty('name'), true);
t.is(b.hasOwnProperty('answer'), true);
t.deepEqual(mixin({}, a), { name: 'a' });
t.deepEqual(mixin({}, b), { name: 'b', answer: 99 });
t.deepEqual(mixin({}, a, b), { name: 'b', answer: 99 });
t.deepEqual(mixin({}, b, a), { name: 'a', answer: 99 });
});
//-------------------------------------------------------------------------------------------------