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
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
|
/**
* @license Apache-2.0
*
* Copyright (c) 2018 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 repeat = require( './../lib' );
// TESTS //
tape( 'main export is a function', function test( t ) {
t.ok( true, __filename );
t.equal( typeof repeat, 'function', 'main export is a function' );
t.end();
});
tape( 'if the first argument is not a string primitive, the function will throw an error', function test( t ) {
var values;
var i;
values = [
5,
true,
NaN,
null,
void 0,
[],
{},
function noop() {}
];
for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[i] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();
function badValue( value ) {
return function badValue() {
repeat( value, 10 );
};
}
});
tape( 'if the second argument is not a nonnegative integer, the function will throw an error', function test( t ) {
var values;
var i;
values = [
'5',
3.14,
-5,
true,
NaN,
null,
void 0,
[],
{},
function noop() {}
];
for ( i = 0; i < values.length; i++ ) {
t.throws( badValue( values[i] ), TypeError, 'throws an error when provided ' + values[ i ] );
}
t.end();
function badValue( value ) {
return function badValue() {
repeat( 'beep', value );
};
}
});
tape( 'if the output string will exceed the maximum allowed string length, the function will throw an error', function test( t ) {
t.throws( foo, RangeError, 'throws RangeError' );
t.end();
function foo() {
repeat( 'beep', 1e300 );
}
});
tape( 'the function repeats an input string a specified number of times', function test( t ) {
var str;
str = repeat( 'a', 5 );
t.equal( str, 'aaaaa', 'repeated 5 times' );
str = repeat( 'beep', 2 );
t.equal( str, 'beepbeep', 'repeated 2 times' );
t.end();
});
tape( 'if provided an empty string, the function returns an empty string', function test( t ) {
t.equal( repeat( '', 100 ), '', 'returns an empty string' );
t.end();
});
tape( 'if repeat number is 0, the function returns an empty string', function test( t ) {
t.equal( repeat( 'a', 0 ), '', 'returns empty string' );
t.end();
});
|
