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rautelaKamalrautelaKamal
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fix: update test.native.js to mirror test.pdf.js
Signed-off-by: Kamal Singh Rautela <130351010+rautelaKamal@users.noreply.github.com>
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  • lib/node_modules/@stdlib/stats/base/dists/erlang/pdf/test

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+170
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lines changed

‎lib/node_modules/@stdlib/stats/base/dists/erlang/pdf/test/test.native.js‎

Lines changed: 170 additions & 26 deletions
Original file line numberDiff line numberDiff line change
@@ -24,6 +24,17 @@ var resolve = require( 'path' ).resolve;
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var tape = require( 'tape' );
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var tryRequire = require( '@stdlib/utils/try-require' );
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var isnan = require( '@stdlib/math/base/assert/is-nan' );
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var abs = require( '@stdlib/math/base/special/abs' );
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var PINF = require( '@stdlib/constants/float64/pinf' );
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var NINF = require( '@stdlib/constants/float64/ninf' );
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var EPS = require( '@stdlib/constants/float64/eps' );
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// FIXTURES //
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var largeRate = require( './fixtures/julia/large_rate.json' );
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var largeShape = require( './fixtures/julia/large_shape.json' );
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var bothLarge = require( './fixtures/julia/both_large.json' );
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// VARIABLES //
@@ -33,41 +44,174 @@ var opts = {
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'skip': ( pdf instanceof Error )
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};
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// TESTS //
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tape( 'main export is a function', opts, function test( t ) {
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t.ok( true, __filename );
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t.strictEqual( typeof pdf, 'function', 'main export is a function' );
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t.end();
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t.ok( true, __filename );
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t.strictEqual( typeof pdf, 'function', 'main export is a function' );
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t.end();
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});
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tape( 'if provided `NaN` for any parameter, the function returns `NaN`', opts, function test( t ) {
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var y = pdf( NaN, 1.0, 1.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 0.0, NaN, 1.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 0.0, 1.0, NaN );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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t.end();
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var y = pdf( NaN, 1.0, 1.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 0.0, NaN, 1.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 0.0, 1.0, NaN );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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t.end();
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});
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tape( 'if provided `+infinity` for `x` and a finite `k` and `lambda`, the function returns `0`', opts, function test( t ) {
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var y = pdf( PINF, 1.0, 1.0 );
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t.strictEqual( y, 0.0, 'returns expected value' );
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t.end();
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});
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55-
tape( 'if provided a non-integer `k`, the function returns `NaN`', opts, function test( t ) {
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var y = pdf( 1.0, 1.5, 1.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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t.end();
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tape( 'if provided `-infinity` for `x` and a finite `k` and `lambda`, the function returns `0`', opts, function test( t ) {
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var y = pdf( NINF, 1.0, 1.0 );
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t.strictEqual( y, 0.0, 'returns expected value' );
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t.end();
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});
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61-
tape( 'if provided a negative `k`, the function returns `NaN`', opts, function test( t ) {
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var y = pdf( 1.0, -1.0, 1.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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t.end();
78+
tape( 'if provided `k <= 0`, the function returns `NaN`', opts, function test( t ) {
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var y;
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y = pdf( 2.0, -1.0, 2.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 0.0, -1.0, 2.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 2.0, NINF, 1.0 );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 2.0, NINF, PINF );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 2.0, NINF, NINF );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 2.0, NINF, NaN );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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t.end();
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});
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y = pdf( 2.0, NINF, NINF );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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y = pdf( 2.0, NINF, NaN );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
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t.end();
65109
});
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67111
tape( 'if provided `lambda <= 0`, the function returns `NaN`', opts, function test( t ) {
68-
var y = pdf( 1.0, 1.0, 0.0 );
69-
t.strictEqual( isnan( y ), true, 'returns expected value' );
70-
y = pdf( 1.0, 1.0, -1.0 );
71-
t.strictEqual( isnan( y ), true, 'returns expected value' );
72-
t.end();
112+
var y;
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114+
y = pdf( 2.0, 2.0, -1.0 );
115+
t.strictEqual( isnan( y ), true, 'returns expected value' );
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117+
y = pdf( 0.0, 2.0, -1.0 );
118+
t.strictEqual( isnan( y ), true, 'returns expected value' );
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120+
y = pdf( 2.0, 1.0, NINF );
121+
t.strictEqual( isnan( y ), true, 'returns expected value' );
122+
123+
y = pdf( 2.0, PINF, NINF );
124+
t.strictEqual( isnan( y ), true, 'returns expected value' );
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126+
y = pdf( 2.0, NINF, NINF );
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t.strictEqual( isnan( y ), true, 'returns expected value' );
128+
129+
y = pdf( 2.0, NaN, NINF );
130+
t.strictEqual( isnan( y ), true, 'returns expected value' );
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132+
t.end();
133+
});
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135+
tape( 'the function evaluates the pdf for `x` given large `k` and `lambda`', opts, function test( t ) {
136+
var expected;
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var lambda;
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var delta;
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var tol;
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var i;
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var k;
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var x;
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var y;
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145+
expected = bothLarge.expected;
146+
x = bothLarge.x;
147+
k = bothLarge.k;
148+
lambda = bothLarge.lambda;
149+
150+
for ( i = 0; i < x.length; i++ ) {
151+
y = pdf( x[i], k[i], lambda[i] );
152+
if ( y === expected[i] ) {
153+
t.strictEqual( y, expected[i], 'x: '+x[i]+', k: '+k[i]+', lambda: '+lambda[i]+', y: '+y+', expected: '+expected[i] );
154+
} else {
155+
delta = abs( y - expected[ i ] );
156+
tol = 180.0 * EPS * abs( expected[ i ] );
157+
t.ok( delta <= tol, 'within tolerance. x: '+x[ i ]+'. k: '+k[i]+'. lambda: '+lambda[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
158+
}
159+
}
160+
t.end();
161+
});
162+
163+
tape( 'the function evaluates the pdf for `x` given large shape parameter `k`', opts, function test( t ) {
164+
var expected;
165+
var lambda;
166+
var delta;
167+
var tol;
168+
var i;
169+
var k;
170+
var x;
171+
var y;
172+
173+
expected = largeShape.expected;
174+
x = largeShape.x;
175+
k = largeShape.k;
176+
lambda = largeShape.lambda;
177+
178+
for ( i = 0; i < x.length; i++ ) {
179+
y = pdf( x[i], k[i], lambda[i] );
180+
if ( y === expected[i] ) {
181+
t.strictEqual( y, expected[i], 'x: '+x[i]+', k: '+k[i]+', lambda: '+lambda[i]+', y: '+y+', expected: '+expected[i] );
182+
} else {
183+
delta = abs( y - expected[ i ] );
184+
tol = 90.0 * EPS * abs( expected[ i ] );
185+
t.ok( delta <= tol, 'within tolerance. x: '+x[ i ]+'. k: '+k[i]+'. lambda: '+lambda[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
186+
}
187+
}
188+
t.end();
189+
});
190+
191+
tape( 'the function evaluates the pdf for `x` given large rate parameter `lambda`', opts, function test( t ) {
192+
var expected;
193+
var lambda;
194+
var delta;
195+
var tol;
196+
var i;
197+
var k;
198+
var x;
199+
var y;
200+
201+
expected = largeRate.expected;
202+
x = largeRate.x;
203+
k = largeRate.k;
204+
lambda = largeRate.lambda;
205+
206+
for ( i = 0; i < x.length; i++ ) {
207+
y = pdf( x[i], k[i], lambda[i] );
208+
if ( y === expected[i] ) {
209+
t.strictEqual( y, expected[i], 'x: '+x[i]+', k: '+k[i]+', lambda: '+lambda[i]+', y: '+y+', expected: '+expected[i] );
210+
} else {
211+
delta = abs( y - expected[ i ] );
212+
tol = 100.0 * EPS * abs( expected[ i ] );
213+
t.ok( delta <= tol, 'within tolerance. x: '+x[ i ]+'. k: '+k[i]+'. lambda: '+lambda[i]+'. y: '+y+'. E: '+expected[ i ]+'. Δ: '+delta+'. tol: '+tol+'.' );
214+
}
215+
}
216+
t.end();
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});

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