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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 |
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23 | 23 | var tape = require( 'tape' );
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24 |
| -var abs = require( '@stdlib/math-base-special-abs' ); |
25 |
| -var sqrt = require( '@stdlib/math-base-special-sqrt' ); |
26 |
| -var EPS = require( '@stdlib/constants-float64-eps' ); |
27 |
| -var incrrmse = require( './../../dist' ); |
| 24 | +var main = require( './../../dist' ); |
28 | 25 |
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29 | 26 |
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30 | 27 | // TESTS //
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31 | 28 |
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32 |
| -tape( 'main export is a function', function test( t ) { |
| 29 | +tape( 'main export is defined', function test( t ) { |
33 | 30 | t.ok( true, __filename );
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34 |
| - t.strictEqual( typeof incrrmse, 'function', 'main export is a function' ); |
35 |
| - t.end(); |
36 |
| -}); |
37 |
| - |
38 |
| -tape( 'the function returns an accumulator function', function test( t ) { |
39 |
| - t.equal( typeof incrrmse(), 'function', 'returns a function' ); |
40 |
| - t.end(); |
41 |
| -}); |
42 |
| - |
43 |
| -tape( 'the initial accumulated value is `null`', function test( t ) { |
44 |
| - var acc = incrrmse(); |
45 |
| - t.equal( acc(), null, 'returns expected value' ); |
46 |
| - t.end(); |
47 |
| -}); |
48 |
| - |
49 |
| -tape( 'the accumulator function incrementally computes the root mean squared error', function test( t ) { |
50 |
| - var expected; |
51 |
| - var actual; |
52 |
| - var delta; |
53 |
| - var data; |
54 |
| - var acc; |
55 |
| - var sum; |
56 |
| - var tol; |
57 |
| - var N; |
58 |
| - var r; |
59 |
| - var x; |
60 |
| - var y; |
61 |
| - var i; |
62 |
| - |
63 |
| - data = [ |
64 |
| - [ 2.0, 3.0 ], |
65 |
| - [ 3.0, -1.0 ], |
66 |
| - [ 2.0, 5.0 ], |
67 |
| - [ 4.0, -4.0 ], |
68 |
| - [ 3.0, 0.0 ], |
69 |
| - [ -4.0, 5.0 ] |
70 |
| - ]; |
71 |
| - N = data.length; |
72 |
| - |
73 |
| - acc = incrrmse(); |
74 |
| - |
75 |
| - sum = 0; |
76 |
| - for ( i = 0; i < N; i++ ) { |
77 |
| - x = data[ i ][ 0 ]; |
78 |
| - y = data[ i ][ 1 ]; |
79 |
| - r = y - x; |
80 |
| - sum += r * r; |
81 |
| - expected = sqrt( sum/(i+1) ); |
82 |
| - actual = acc( x, y ); |
83 |
| - if ( actual === expected ) { |
84 |
| - t.equal( actual, expected, 'returns expected value' ); |
85 |
| - } else { |
86 |
| - delta = abs( expected - actual ); |
87 |
| - tol = 1.0 * EPS * abs( expected ); |
88 |
| - t.equal( delta <= tol, true, 'within tolerance. Actual: '+actual+'. Expected: '+expected+'. Delta: '+delta+'. Tol: '+tol+'.' ); |
89 |
| - } |
90 |
| - } |
91 |
| - t.end(); |
92 |
| -}); |
93 |
| - |
94 |
| -tape( 'if not provided an input value, the accumulator function returns the current root mean squared error', function test( t ) { |
95 |
| - var expected; |
96 |
| - var actual; |
97 |
| - var delta; |
98 |
| - var data; |
99 |
| - var acc; |
100 |
| - var tol; |
101 |
| - var i; |
102 |
| - |
103 |
| - data = [ |
104 |
| - [ 2.0, 3.0 ], |
105 |
| - [ 3.0, -5.0 ], |
106 |
| - [ 1.0, 10.0 ] |
107 |
| - ]; |
108 |
| - acc = incrrmse(); |
109 |
| - for ( i = 0; i < data.length; i++ ) { |
110 |
| - acc( data[ i ][ 0 ], data[ i ][ 1 ] ); |
111 |
| - } |
112 |
| - actual = acc(); |
113 |
| - expected = sqrt( ( 1.0+64.0+81.0 ) / 3.0 ); |
114 |
| - delta = abs( expected - actual ); |
115 |
| - tol = 1.0 * EPS * abs( expected ); |
116 |
| - t.equal( delta <= tol, true, 'within tolerance. Actual: '+actual+'. Expected: '+expected+'. Delta: '+delta+'. Tol: '+tol+'.' ); |
| 31 | + t.strictEqual( main !== void 0, true, 'main export is defined' ); |
117 | 32 | t.end();
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118 | 33 | });
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