php-ml/tests/Dataset/SvmDatasetTest.php

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<?php
declare(strict_types=1);
namespace Phpml\Tests\Dataset;
use Phpml\Dataset\SvmDataset;
use Phpml\Exception\DatasetException;
use Phpml\Exception\FileException;
use PHPUnit\Framework\TestCase;
class SvmDatasetTest extends TestCase
{
public function testSvmDatasetEmpty(): void
{
$filePath = self::getFilePath('empty.svm');
$dataset = new SvmDataset($filePath);
$expectedSamples = [
];
$expectedTargets = [
];
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self::assertEquals($expectedSamples, $dataset->getSamples());
self::assertEquals($expectedTargets, $dataset->getTargets());
}
public function testSvmDataset1x1(): void
{
$filePath = self::getFilePath('1x1.svm');
$dataset = new SvmDataset($filePath);
$expectedSamples = [
[2.3],
];
$expectedTargets = [
0,
];
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self::assertEquals($expectedSamples, $dataset->getSamples());
self::assertEquals($expectedTargets, $dataset->getTargets());
}
public function testSvmDataset3x1(): void
{
$filePath = self::getFilePath('3x1.svm');
$dataset = new SvmDataset($filePath);
$expectedSamples = [
[2.3],
[4.56],
[78.9],
];
$expectedTargets = [
1,
0,
1,
];
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self::assertEquals($expectedSamples, $dataset->getSamples());
self::assertEquals($expectedTargets, $dataset->getTargets());
}
public function testSvmDataset3x4(): void
{
$filePath = self::getFilePath('3x4.svm');
$dataset = new SvmDataset($filePath);
$expectedSamples = [
[2, 4, 6, 8],
[3, 5, 7, 9],
[1.2, 3.4, 5.6, 7.8],
];
$expectedTargets = [
1,
2,
0,
];
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self::assertEquals($expectedSamples, $dataset->getSamples());
self::assertEquals($expectedTargets, $dataset->getTargets());
}
public function testSvmDatasetSparse(): void
{
$filePath = self::getFilePath('sparse.svm');
$dataset = new SvmDataset($filePath);
$expectedSamples = [
[0, 3.45, 0, 0, 0],
[0, 0, 0, 0, 6.789],
];
$expectedTargets = [
0,
1,
];
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self::assertEquals($expectedSamples, $dataset->getSamples());
self::assertEquals($expectedTargets, $dataset->getTargets());
}
public function testSvmDatasetComments(): void
{
$filePath = self::getFilePath('comments.svm');
$dataset = new SvmDataset($filePath);
$expectedSamples = [
[2],
[34],
];
$expectedTargets = [
0,
1,
];
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self::assertEquals($expectedSamples, $dataset->getSamples());
self::assertEquals($expectedTargets, $dataset->getTargets());
}
public function testSvmDatasetTabs(): void
{
$filePath = self::getFilePath('tabs.svm');
$dataset = new SvmDataset($filePath);
$expectedSamples = [
[23, 45],
];
$expectedTargets = [
1,
];
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self::assertEquals($expectedSamples, $dataset->getSamples());
self::assertEquals($expectedTargets, $dataset->getTargets());
}
public function testSvmDatasetMissingFile(): void
{
$this->expectException(FileException::class);
$this->expectExceptionMessage('File "err_file_not_exists.svm" missing.');
new SvmDataset(self::getFilePath('err_file_not_exists.svm'));
}
public function testSvmDatasetEmptyLine(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid target "".');
new SvmDataset(self::getFilePath('err_empty_line.svm'));
}
public function testSvmDatasetNoLabels(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid target "1:2.3".');
new SvmDataset(self::getFilePath('err_no_labels.svm'));
}
public function testSvmDatasetStringLabels(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid target "A".');
new SvmDataset(self::getFilePath('err_string_labels.svm'));
}
public function testSvmDatasetInvalidSpaces(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid target "".');
new SvmDataset(self::getFilePath('err_invalid_spaces.svm'));
}
public function testSvmDatasetStringIndex(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid index "x".');
new SvmDataset(self::getFilePath('err_string_index.svm'));
}
public function testSvmDatasetIndexZero(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid index "0".');
new SvmDataset(self::getFilePath('err_index_zero.svm'));
}
public function testSvmDatasetInvalidValue(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid value "xyz".');
new SvmDataset(self::getFilePath('err_invalid_value.svm'));
}
public function testSvmDatasetInvalidFeature(): void
{
$this->expectException(DatasetException::class);
$this->expectExceptionMessage('Invalid value "12345".');
new SvmDataset(self::getFilePath('err_invalid_feature.svm'));
}
private static function getFilePath(string $baseName): string
{
return __DIR__.'/Resources/svm/'.$baseName;
}
}