<?php

declare (strict_types = 1);

namespace tests\SupportVectorMachine;

use Phpml\SupportVectorMachine\Kernel;
use Phpml\SupportVectorMachine\SupportVectorMachine;
use Phpml\SupportVectorMachine\Type;

class SupportVectorMachineTest extends \PHPUnit_Framework_TestCase
{
    public function testTrainCSVCModelWithLinearKernel()
    {
        $samples = [[1, 3], [1, 4], [2, 4], [3, 1], [4, 1], [4, 2]];
        $labels = ['a', 'a', 'a', 'b', 'b', 'b'];

        $model =
            'svm_type c_svc
kernel_type linear
nr_class 2
total_sv 2
rho 0
label 0 1
nr_sv 1 1
SV
0.25 0:2 1:4 
-0.25 0:4 1:2 
';

        $svm = new SupportVectorMachine(Type::C_SVC, Kernel::LINEAR, 100.0);
        $svm->train($samples, $labels);

        $this->assertEquals($model, $svm->getModel());
    }
}