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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 Float64Array = require( '@stdlib/array-float64' ); |
26 |
| -var countBy = require( './../../dist' ); |
| 24 | +var main = require( './../../dist' ); |
27 | 25 |
|
28 | 26 |
|
29 | 27 | // TESTS //
|
30 | 28 |
|
31 |
| -tape( 'main export is a function', function test( t ) { |
| 29 | +tape( 'main export is defined', function test( t ) { |
32 | 30 | t.ok( true, __filename );
|
33 |
| - t.strictEqual( typeof countBy, 'function', 'main export is a function' ); |
34 |
| - t.end(); |
35 |
| -}); |
36 |
| - |
37 |
| -tape( 'the function throws an error if not provided a collection', function test( t ) { |
38 |
| - var values; |
39 |
| - var i; |
40 |
| - |
41 |
| - values = [ |
42 |
| - '5', |
43 |
| - 5, |
44 |
| - NaN, |
45 |
| - true, |
46 |
| - false, |
47 |
| - null, |
48 |
| - void 0, |
49 |
| - {}, |
50 |
| - function noop() {}, |
51 |
| - /.*/, |
52 |
| - new Date() |
53 |
| - ]; |
54 |
| - |
55 |
| - for ( i = 0; i < values.length; i++ ) { |
56 |
| - t.throws( badValue( values[i] ), TypeError, 'throws a type error when provided '+values[i] ); |
57 |
| - } |
58 |
| - t.end(); |
59 |
| - |
60 |
| - function badValue( value ) { |
61 |
| - return function badValue() { |
62 |
| - countBy( value, noop ); |
63 |
| - }; |
64 |
| - } |
65 |
| -}); |
66 |
| - |
67 |
| -tape( 'the function throws an error if not provided an indicator function (no options)', function test( t ) { |
68 |
| - var values; |
69 |
| - var i; |
70 |
| - |
71 |
| - values = [ |
72 |
| - '5', |
73 |
| - 5, |
74 |
| - NaN, |
75 |
| - true, |
76 |
| - false, |
77 |
| - null, |
78 |
| - void 0, |
79 |
| - {}, |
80 |
| - [], |
81 |
| - /.*/, |
82 |
| - new Date() |
83 |
| - ]; |
84 |
| - |
85 |
| - for ( i = 0; i < values.length; i++ ) { |
86 |
| - t.throws( badValue( values[i] ), TypeError, 'throws a type error when provided '+values[i] ); |
87 |
| - } |
88 |
| - t.end(); |
89 |
| - |
90 |
| - function badValue( value ) { |
91 |
| - return function badValue() { |
92 |
| - countBy( [ 1, 2, 3 ], value ); |
93 |
| - }; |
94 |
| - } |
95 |
| -}); |
96 |
| - |
97 |
| -tape( 'the function throws an error if not provided an indicator function (options)', function test( t ) { |
98 |
| - var values; |
99 |
| - var i; |
100 |
| - |
101 |
| - values = [ |
102 |
| - '5', |
103 |
| - 5, |
104 |
| - NaN, |
105 |
| - true, |
106 |
| - false, |
107 |
| - null, |
108 |
| - void 0, |
109 |
| - {}, |
110 |
| - [], |
111 |
| - /.*/, |
112 |
| - new Date() |
113 |
| - ]; |
114 |
| - |
115 |
| - for ( i = 0; i < values.length; i++ ) { |
116 |
| - t.throws( badValue( values[i] ), TypeError, 'throws a type error when provided '+values[i] ); |
117 |
| - } |
118 |
| - t.end(); |
119 |
| - |
120 |
| - function badValue( value ) { |
121 |
| - return function badValue() { |
122 |
| - countBy( [ 1, 2, 3 ], {}, value ); |
123 |
| - }; |
124 |
| - } |
125 |
| -}); |
126 |
| - |
127 |
| -tape( 'the function throws an error if provided an invalid options argument', function test( t ) { |
128 |
| - var values; |
129 |
| - var i; |
130 |
| - |
131 |
| - values = [ |
132 |
| - '5', |
133 |
| - 5, |
134 |
| - NaN, |
135 |
| - true, |
136 |
| - false, |
137 |
| - null, |
138 |
| - void 0, |
139 |
| - [], |
140 |
| - function noop() {}, |
141 |
| - /.*/, |
142 |
| - new Date() |
143 |
| - ]; |
144 |
| - |
145 |
| - for ( i = 0; i < values.length; i++ ) { |
146 |
| - t.throws( badValue( values[i] ), TypeError, 'throws a type error when provided '+values[i] ); |
147 |
| - } |
148 |
| - t.end(); |
149 |
| - |
150 |
| - function badValue( value ) { |
151 |
| - return function badValue() { |
152 |
| - countBy( [ 1, 2, 3 ], value, noop ); |
153 |
| - }; |
154 |
| - } |
155 |
| -}); |
156 |
| - |
157 |
| -tape( 'the function groups collection elements according to an indicator function and returns group counts', function test( t ) { |
158 |
| - var expected; |
159 |
| - var out; |
160 |
| - var arr; |
161 |
| - |
162 |
| - function indicator( v ) { |
163 |
| - return v[ 0 ]; |
164 |
| - } |
165 |
| - |
166 |
| - arr = [ 'beep', 'boop', 'foo', 'bar' ]; |
167 |
| - |
168 |
| - expected = { |
169 |
| - 'b': 3, |
170 |
| - 'f': 1 |
171 |
| - }; |
172 |
| - out = countBy( arr, indicator ); |
173 |
| - |
174 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
175 |
| - t.end(); |
176 |
| -}); |
177 |
| - |
178 |
| -tape( 'the function groups collection elements according to an indicator function and returns group counts (typed array)', function test( t ) { |
179 |
| - var expected; |
180 |
| - var out; |
181 |
| - var arr; |
182 |
| - |
183 |
| - function indicator( v ) { |
184 |
| - return v; |
185 |
| - } |
186 |
| - |
187 |
| - arr = new Float64Array( [ 0, 1, 1, 0 ] ); |
188 |
| - |
189 |
| - expected = { |
190 |
| - '0': 2, |
191 |
| - '1': 2 |
192 |
| - }; |
193 |
| - out = countBy( arr, indicator ); |
194 |
| - |
195 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
196 |
| - t.end(); |
197 |
| -}); |
198 |
| - |
199 |
| -tape( 'the function groups collection elements according to an indicator function and returns group counts (array-like object)', function test( t ) { |
200 |
| - var expected; |
201 |
| - var out; |
202 |
| - var arr; |
203 |
| - |
204 |
| - function indicator( v ) { |
205 |
| - return v[ 0 ]; |
206 |
| - } |
207 |
| - |
208 |
| - arr = { |
209 |
| - 'length': 4, |
210 |
| - '0': 'beep', |
211 |
| - '1': 'boop', |
212 |
| - '2': 'foo', |
213 |
| - '3': 'bar' |
214 |
| - }; |
215 |
| - expected = { |
216 |
| - 'b': 3, |
217 |
| - 'f': 1 |
218 |
| - }; |
219 |
| - out = countBy( arr, indicator ); |
220 |
| - |
221 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
222 |
| - t.end(); |
223 |
| -}); |
224 |
| - |
225 |
| -tape( 'the function groups collection elements according to an indicator function and returns group counts (string serialization)', function test( t ) { |
226 |
| - var expected; |
227 |
| - var out; |
228 |
| - var arr; |
229 |
| - |
230 |
| - function indicator() { |
231 |
| - return {}; |
232 |
| - } |
233 |
| - |
234 |
| - arr = [ 'beep', 'boop', 'foo', 'bar' ]; |
235 |
| - |
236 |
| - expected = { |
237 |
| - '[object Object]': 4 |
238 |
| - }; |
239 |
| - out = countBy( arr, indicator ); |
240 |
| - |
241 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
242 |
| - t.end(); |
243 |
| -}); |
244 |
| - |
245 |
| -tape( 'the function groups collection elements according to an indicator function and returns group counts (string serialization)', function test( t ) { |
246 |
| - var expected; |
247 |
| - var out; |
248 |
| - var arr; |
249 |
| - |
250 |
| - function indicator() {} |
251 |
| - |
252 |
| - arr = [ 'beep', 'boop', 'foo', 'bar' ]; |
253 |
| - |
254 |
| - expected = { |
255 |
| - 'undefined': 4 |
256 |
| - }; |
257 |
| - out = countBy( arr, indicator ); |
258 |
| - |
259 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
260 |
| - t.end(); |
261 |
| -}); |
262 |
| - |
263 |
| -tape( 'the function supports providing an execution context', function test( t ) { |
264 |
| - var expected; |
265 |
| - var opts; |
266 |
| - var ctx; |
267 |
| - var out; |
268 |
| - var arr; |
269 |
| - |
270 |
| - function indicator( v ) { |
271 |
| - return v * this.scalar; // eslint-disable-line no-invalid-this |
272 |
| - } |
273 |
| - |
274 |
| - ctx = { |
275 |
| - 'scalar': 2 |
276 |
| - }; |
277 |
| - |
278 |
| - arr = [ 0, 1, 1, 0 ]; |
279 |
| - |
280 |
| - opts = { |
281 |
| - 'thisArg': ctx |
282 |
| - }; |
283 |
| - expected = { |
284 |
| - '0': 2, |
285 |
| - '2': 2 |
286 |
| - }; |
287 |
| - out = countBy( arr, opts, indicator ); |
288 |
| - |
289 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
290 |
| - t.end(); |
291 |
| -}); |
292 |
| - |
293 |
| -tape( 'the function invokes the indicator function with both the collection element and the element index', function test( t ) { |
294 |
| - var expected; |
295 |
| - var out; |
296 |
| - var arr; |
297 |
| - |
298 |
| - function indicator( v, i ) { |
299 |
| - return v * i; |
300 |
| - } |
301 |
| - |
302 |
| - arr = [ 2, 2, 2, 2 ]; |
303 |
| - |
304 |
| - expected = { |
305 |
| - '0': 1, |
306 |
| - '2': 1, |
307 |
| - '4': 1, |
308 |
| - '6': 1 |
309 |
| - }; |
310 |
| - out = countBy( arr, indicator ); |
311 |
| - |
312 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
313 |
| - t.end(); |
314 |
| -}); |
315 |
| - |
316 |
| -tape( 'if provided an empty collection, the function returns an empty object', function test( t ) { |
317 |
| - var expected; |
318 |
| - var out; |
319 |
| - var arr; |
320 |
| - |
321 |
| - function indicator( v ) { |
322 |
| - return v[ 0 ]; |
323 |
| - } |
324 |
| - |
325 |
| - arr = []; |
326 |
| - |
327 |
| - expected = {}; |
328 |
| - out = countBy( arr, indicator ); |
329 |
| - |
330 |
| - t.deepEqual( out, expected, 'returns expected results' ); |
| 31 | + t.strictEqual( main !== void 0, true, 'main export is defined' ); |
331 | 32 | t.end();
|
332 | 33 | });
|
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