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1 | 1 | /**
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2 | 2 | * @license Apache-2.0
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3 | 3 | *
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4 |
| -* Copyright (c) 2018 The Stdlib Authors. |
| 4 | +* Copyright (c) 2023 The Stdlib Authors. |
5 | 5 | *
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6 | 6 | * Licensed under the Apache License, Version 2.0 (the "License");
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7 | 7 | * you may not use this file except in compliance with the License.
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21 | 21 | // MODULES //
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22 | 22 |
|
23 | 23 | var tape = require( 'tape' );
|
24 |
| -var noop = require( '@stdlib/utils-noop' ); |
25 |
| -var mapKeys = require( './../../dist' ); |
| 24 | +var main = require( './../../dist' ); |
26 | 25 |
|
27 | 26 |
|
28 | 27 | // TESTS //
|
29 | 28 |
|
30 |
| -tape( 'main export is a function', function test( t ) { |
| 29 | +tape( 'main export is defined', function test( t ) { |
31 | 30 | t.ok( true, __filename );
|
32 |
| - t.strictEqual( typeof mapKeys, 'function', 'main export is a function' ); |
33 |
| - t.end(); |
34 |
| -}); |
35 |
| - |
36 |
| -tape( 'the function throws an error if provided a source object argument which is not an object', function test( t ) { |
37 |
| - var values; |
38 |
| - var i; |
39 |
| - |
40 |
| - values = [ |
41 |
| - '5', |
42 |
| - 5, |
43 |
| - NaN, |
44 |
| - null, |
45 |
| - void 0, |
46 |
| - true |
47 |
| - ]; |
48 |
| - |
49 |
| - for ( i = 0; i < values.length; i++ ) { |
50 |
| - t.throws( badValue( values[i] ), TypeError, 'throws a type error when provided '+values[i] ); |
51 |
| - } |
52 |
| - t.end(); |
53 |
| - |
54 |
| - function badValue( value ) { |
55 |
| - return function badValue() { |
56 |
| - mapKeys( value, noop ); |
57 |
| - }; |
58 |
| - } |
59 |
| -}); |
60 |
| - |
61 |
| -tape( 'the function throws an error if provided a second argument which is not a function', function test( t ) { |
62 |
| - var values; |
63 |
| - var i; |
64 |
| - |
65 |
| - values = [ |
66 |
| - '5', |
67 |
| - 5, |
68 |
| - NaN, |
69 |
F438
code> | - null, |
70 |
| - void 0, |
71 |
| - true, |
72 |
| - {}, |
73 |
| - [] |
74 |
| - ]; |
75 |
| - |
76 |
| - for ( i = 0; i < values.length; i++ ) { |
77 |
| - t.throws( badValue( values[i] ), TypeError, 'throws a type error when provided '+values[i] ); |
78 |
| - } |
79 |
| - t.end(); |
80 |
| - |
81 |
| - function badValue( value ) { |
82 |
| - return function badValue() { |
83 |
| - mapKeys( {}, value ); |
84 |
| - }; |
85 |
| - } |
86 |
| -}); |
87 |
| - |
88 |
| -tape( 'the function maps keys from a source object to keys on a destination object', function test( t ) { |
89 |
| - var expected; |
90 |
| - var obj1; |
91 |
| - var obj2; |
92 |
| - |
93 |
| - function transform( key, value ) { |
94 |
| - return key + value; |
95 |
| - } |
96 |
| - |
97 |
| - obj1 = { |
98 |
| - 'a': 1, |
99 |
| - 'b': 2, |
100 |
| - 'c': 3, |
101 |
| - 'd': 4, |
102 |
| - 'e': 5 |
103 |
| - }; |
104 |
| - |
105 |
| - obj2 = mapKeys( obj1, transform ); |
106 |
| - |
107 |
| - expected = { |
108 |
| - 'a1': 1, |
109 |
| - 'b2': 2, |
110 |
| - 'c3': 3, |
111 |
| - 'd4': 4, |
112 |
| - 'e5': 5 |
113 |
| - }; |
114 |
| - |
115 |
| - t.deepEqual( obj2, expected, 'returns expected object' ); |
116 |
| - t.end(); |
117 |
| -}); |
118 |
| - |
119 |
| -tape( 'the function maps keys from a source object to keys on a destination object', function test( t ) { |
120 |
| - var expected; |
121 |
| - var obj1; |
122 |
| - var obj2; |
123 |
| - |
124 |
| - function transform( key ) { |
125 |
| - return 'beep:' + key; |
126 |
| - } |
127 |
| - |
128 |
| - obj1 = { |
129 |
| - 'a': 1, |
130 |
| - 'b': 2, |
131 |
| - 'c': 3, |
132 |
| - 'd': 4, |
133 |
| - 'e': 5 |
134 |
| - }; |
135 |
| - |
136 |
| - obj2 = mapKeys( obj1, transform ); |
137 |
| - |
138 |
| - expected = { |
139 |
| - 'beep:a': 1, |
140 |
| - 'beep:b': 2, |
141 |
| - 'beep:c': 3, |
142 |
| - 'beep:d': 4, |
143 |
| - 'beep:e': 5 |
144 |
| - }; |
145 |
| - |
146 |
| - t.deepEqual( obj2, expected, 'returns expected object' ); |
147 |
| - t.end(); |
148 |
| -}); |
149 |
| - |
150 |
| -tape( 'the function ignores inherited properties', function test( t ) { |
151 |
| - var expected; |
152 |
| - var obj1; |
153 |
| - var obj2; |
154 |
| - |
155 |
| - function transform( key ) { |
156 |
| - if ( key === 'f' || key === 'g' ) { |
157 |
| - t.ok( false, 'returns an inherited property' ); |
158 |
| - } |
159 |
| - return key; |
160 |
| - } |
161 |
| - |
162 |
| - function Foo() { |
163 |
| - this.a = 1; |
164 |
| - this.b = 2; |
165 |
| - this.c = 3; |
166 |
| - this.d = 4; |
167 |
| - this.e = 5; |
168 |
| - return this; |
169 |
| - } |
170 |
| - |
171 |
| - Foo.prototype.f = 6; |
172 |
| - Foo.prototype.g = 7; |
173 |
| - |
174 |
| - obj1 = new Foo(); |
175 |
| - |
176 |
| - obj2 = mapKeys( obj1, transform ); |
177 |
| - |
178 |
| - expected = { |
179 |
| - 'a': 1, |
180 |
| - 'b': 2, |
181 |
| - 'c': 3, |
182 |
| - 'd': 4, |
183 |
| - 'e': 5 |
184 |
| - }; |
185 |
| - |
186 |
| - t.deepEqual( obj2, expected, 'returns expected object' ); |
187 |
| - t.end(); |
188 |
| -}); |
189 |
| - |
190 |
| -tape( 'the function accepts non-plain objects', function test( t ) { |
191 |
| - var expected; |
192 |
| - var obj1; |
193 |
| - var obj2; |
194 |
| - |
195 |
| - function transform( key, value ) { |
196 |
| - return key + value; |
197 |
| - } |
198 |
| - |
199 |
| - obj1 = [ 0, 1, 2, 3, 4, 5 ]; |
200 |
| - |
201 |
| - obj2 = mapKeys( obj1, transform ); |
202 |
| - |
203 |
| - expected = { |
204 |
| - '00': 0, |
205 |
| - '11': 1, |
206 |
| - '22': 2, |
207 |
| - '33': 3, |
208 |
| - '44': 4, |
209 |
| - '55': 5 |
210 |
| - }; |
211 |
| - |
212 |
| - t.deepEqual( obj2, expected, 'returns expected object' ); |
213 |
| - t.end(); |
214 |
| -}); |
215 |
| - |
216 |
| -tape( 'the function returns a shallow copy', function test( t ) { |
217 |
| - var expected; |
218 |
| - var obj1; |
219 |
| - var obj2; |
220 |
| - |
221 |
| - function transform( key ) { |
222 |
| - return key; |
223 |
| - } |
224 |
| - |
225 |
| - obj1 = { |
226 |
| - 'a': [ 1 ], |
227 |
| - 'b': [ 2 ], |
228 |
| - 'c': [ 3 ], |
229 |
| - 'd': [ 4 ], |
230 |
| - 'e': [ 5 ] |
231 |
| - }; |
232 |
| - |
233 |
| - obj2 = mapKeys( obj1, transform ); |
234 |
| - |
235 |
| - expected = { |
236 |
| - 'a': obj1.a, |
237 |
| - 'b': obj1.b, |
238 |
| - 'c': obj1.c, |
239 |
| - 'd': obj1.d, |
240 |
| - 'e': obj1.e |
241 |
| - }; |
242 |
| - |
243 |
| - t.deepEqual( obj2, expected, 'returns expected object' ); |
244 |
| - t.strictEqual( obj2.a, obj1.a, 'returns shallow copy' ); |
245 |
| - t.strictEqual( obj2.b, obj1.b, 'returns shallow copy' ); |
246 |
| - t.strictEqual( obj2.c, obj1.c, 'returns shallow copy' ); |
247 |
| - t.strictEqual( obj2.d, obj1.d, 'returns shallow copy' ); |
248 |
| - t.strictEqual( obj2.e, obj1.e, 'returns shallow copy' ); |
249 |
| - |
250 |
| - t.end(); |
251 |
| -}); |
252 |
| - |
253 |
| -tape( 'if provided an empty object, the function returns an empty object', function test( t ) { |
254 |
| - var expected; |
255 |
| - var obj1; |
256 |
| - var obj2; |
257 |
| - |
258 |
| - function transform( key, value ) { |
259 |
| - t.fail( 'should never be called' ); |
260 |
| - return key + value; |
261 |
| - } |
262 |
| - |
263 |
| - obj1 = {}; |
264 |
| - expected = {}; |
265 |
| - |
266 |
| - obj2 = mapKeys( obj1, transform ); |
267 |
| - |
268 |
| - t.deepEqual( obj2, expected, 'returns expected object' ); |
269 |
| - t.end(); |
270 |
| -}); |
271 |
| - |
272 |
| -tape( 'the function serializes transform function return values as object keys', function test( t ) { |
273 |
| - var expected; |
274 |
| - var obj1; |
275 |
| - var obj2; |
276 |
| - |
277 |
| - function transform( key, value ) { |
278 |
| - return value; |
279 |
| - } |
280 |
| - |
281 |
| - obj1 = { |
282 |
| - 'a': {} |
283 |
| - }; |
284 |
| - expected = { |
285 |
| - '[object Object]': obj1.a |
286 |
| - }; |
287 |
| - |
288 |
| - obj2 = mapKeys( obj1, transform ); |
289 |
| - |
290 |
| - t.deepEqual( obj2, expected, 'returns expected object' ); |
| 31 | + t.strictEqual( main !== void 0, true, 'main export is defined' ); |
291 | 32 | t.end();
|
292 | 33 | });
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