php-ml/tests/Phpml/NeuralNetwork/ActivationFunction/BinaryStepTest.php

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<?php
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declare(strict_types=1);
namespace Phpml\Tests\NeuralNetwork\ActivationFunction;
use Phpml\NeuralNetwork\ActivationFunction\BinaryStep;
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use PHPUnit\Framework\TestCase;
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class BinaryStepTest extends TestCase
{
/**
* @dataProvider binaryStepProvider
*/
public function testBinaryStepActivationFunction($expected, $value): void
{
$binaryStep = new BinaryStep();
$this->assertEquals($expected, $binaryStep->compute($value));
}
public function binaryStepProvider(): array
{
return [
[1, 1],
[1, 0],
[0, -0.1],
];
}
/**
* @dataProvider binaryStepDerivativeProvider
*/
public function testBinaryStepDerivative($expected, $value): void
{
$binaryStep = new BinaryStep();
$activatedValue = $binaryStep->compute($value);
$this->assertEquals($expected, $binaryStep->differentiate($value, $activatedValue));
}
public function binaryStepDerivativeProvider(): array
{
return [
[0, -1],
[1, 0],
[0, 1],
];
}
}