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| 1 | +/** |
| 2 | +* @license Apache-2.0 |
| 3 | +* |
| 4 | +* Copyright (c) 2018 The Stdlib Authors. |
| 5 | +* |
| 6 | +* Licensed under the Apache License, Version 2.0 (the "License"); |
| 7 | +* you may not use this file except in compliance with the License. |
| 8 | +* You may obtain a copy of the License at |
| 9 | +* |
| 10 | +* http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | +* |
| 12 | +* Unless required by applicable law or agreed to in writing, software |
| 13 | +* distributed under the License is distributed on an "AS IS" BASIS, |
| 14 | +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 15 | +* See the License for the specific language governing permissions and |
| 16 | +* limitations under the License. |
| 17 | +*/ |
| 18 | + |
| 19 | +'use strict'; |
| 20 | + |
| 21 | +// MODULES // |
| 22 | + |
| 23 | +var tape = require( 'tape' ); |
| 24 | +var proxyquire = require( 'proxyquire' ); |
| 25 | +var builtin = require( './../lib/builtin.js' ); |
| 26 | +var wrapper = require( './../lib/builtin_wrapper.js' ); |
| 27 | +var polyfill = require( './../lib/polyfill.js' ); |
| 28 | +var objectKeys = require( './../lib/main.js' ); |
| 29 | + |
| 30 | + |
| 31 | +// TESTS // |
| 32 | + |
| 33 | +tape( 'main export is a function', function test( t ) { |
| 34 | + t.ok( true, __filename ); |
| 35 | + t.strictEqual( typeof objectKeys, 'function', 'main export is a function' ); |
| 36 | + t.end(); |
| 37 | +}); |
| 38 | + |
| 39 | +tape( 'if an environment has a non-buggy built-in implementation, the export is the built-in implementation', function test( t ) { |
| 40 | + var objectKeys = proxyquire( './../lib/main.js', { |
| 41 | + './has_builtin.js': true, |
| 42 | + './has_arguments_bug.js': mock |
| 43 | + }); |
| 44 | + t.strictEqual( objectKeys, builtin, 'is expected value' ); |
| 45 | + t.end(); |
| 46 | + |
| 47 | + function mock() { |
| 48 | + return false; |
| 49 | + } |
| 50 | +}); |
| 51 | + |
| 52 | +tape( 'if an environment has a buggy built-in implementation (i.e., does not support `arguments`, as in Safari 5.0), the export is a wrapper which patches the built-in implementation', function test( t ) { |
| 53 | + var objectKeys = proxyquire( './../lib/main.js', { |
| 54 | + './has_builtin.js': true, |
| 55 | + './has_arguments_bug.js': mock |
| 56 | + }); |
| 57 | + t.strictEqual( objectKeys, wrapper, 'is expected value' ); |
| 58 | + t.end(); |
| 59 | + |
| 60 | + function mock() { |
| 61 | + return true; |
| 62 | + } |
| 63 | +}); |
| 64 | + |
| 65 | +tape( 'if an environment does not have a built-in implementation, the export is a polyfill', function test( t ) { |
| 66 | + var objectKeys = proxyquire( './../lib/main.js', { |
| 67 | + './has_builtin.js': false |
| 68 | + }); |
| 69 | + t.strictEqual( objectKeys, polyfill, 'is expected value' ); |
| 70 | + t.end(); |
| 71 | +}); |
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