1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
/**
* @license Apache-2.0
*
* Copyright (c) 2021 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var tape = require( 'tape' );
var proxyquire = require( 'proxyquire' );
var detect = require( './../lib' );
// VARIABLES //
var hasBigInt64Array = ( typeof BigInt64Array === 'function' ); // eslint-disable-line stdlib/require-globals
var MAX_FLOAT64_INTEGER = '9007199254740991'; // 2^53-1
var MAX_FLOAT64_INTEGER_P2 = '9007199254740993';
// TESTS //
tape( 'main export is a function', function test( t ) {
t.ok( true, __filename );
t.strictEqual( typeof detect, 'function', 'main export is a function' );
t.end();
});
tape( 'feature detection result is a boolean', function test( t ) {
t.strictEqual( typeof detect(), 'boolean', 'detection result is a boolean' );
t.end();
});
tape( 'if `BigInt64Array` is supported, detection result is `true`', function test( t ) {
var mocked;
if ( hasBigInt64Array ) {
t.strictEqual( detect(), true, 'detection result is `true`' );
} else {
t.strictEqual( detect(), false, 'detection result is `false`' );
}
mocked = proxyquire( './../lib/main.js', {
'./bigint64array.js': Mock,
'./../../is-bigint': isTrue,
'./../../is-bigint64array': isTrue
});
t.strictEqual( mocked(), true, 'detection result is `true` (mocked)' );
t.end();
function isTrue() {
return true;
}
function Mock() {
return [
MAX_FLOAT64_INTEGER,
MAX_FLOAT64_INTEGER_P2
];
}
});
tape( 'if `BigInt64Array` is not supported, detection result is `false`', function test( t ) {
var mocked;
if ( hasBigInt64Array ) {
t.strictEqual( detect(), true, 'detection result is `true`' );
} else {
t.strictEqual( detect(), false, 'detection result is `false`' );
}
mocked = proxyquire( './../lib/main.js', {
'./bigint64array.js': {}
});
t.strictEqual( mocked(), false, 'detection result is `false`' );
mocked = proxyquire( './../lib/main.js', {
'./bigint64array.js': Mock
});
t.strictEqual( mocked(), false, 'detection result is `false`' );
t.end();
function Mock() {
throw new Error( 'beep' );
}
});
|
