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<?php |
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require __DIR__ . '/../src/MatLabPHP.php'; |
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use MatLabPHP\MatLabPHP; |
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class MatLabPHPTest extends \PHPUnit_Framework_TestCase |
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{ |
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/** |
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* Asserts that a variable is of a Stringy instance. |
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* |
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* @param mixed $actual |
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*/ |
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public function assertMatLabPHP($actual) |
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{ |
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$this->assertInstanceOf('MatLabPHP\MatLabPHP', $actual); |
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} |
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public function testStringToVector() |
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{ |
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$matLab = $this->getMatLabObject(); |
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$result = $matLab->stringToVector("[3 1 2; 5 4 7; 6 9 7]"); |
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$expected = array( |
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0 => array( |
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0 => '3', |
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1 => '1', |
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2 => '2' |
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), |
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1 => array( |
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0 => '5', |
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1 => '4', |
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2 => '7' |
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), |
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2 => array( |
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0 => '6', |
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1 => '9', |
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2 => '7' |
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) |
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); |
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$this->assertEquals($result, $expected); |
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} |
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public function testEye() |
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{ |
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$matLab = $this->getMatLabObject(); |
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$result = $matLab->eye(4); |
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$expected = array( |
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1 => array( |
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'1' => '1', |
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'2' => '0', |
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'3' => '0', |
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'4' => '0' |
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), |
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2 => array( |
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'1' => '0', |
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'2' => '1', |
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'3' => '0', |
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'4' => '0' |
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), |
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3 => array( |
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'1' => '0', |
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'2' => '0', |
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'3' => '1', |
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'4' => '0' |
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), |
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4 => array( |
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'1' => '0', |
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'2' => '0', |
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'3' => '0', |
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'4' => '1' |
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) |
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); |
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$this->assertEquals($result, $expected); |
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$result = $matLab->eye(2, 3); |
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$expected = array( |
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1 => array( |
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'1' => '1', |
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'2' => '0', |
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'3' => '0' |
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), |
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2 => array( |
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'1' => '0', |
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'2' => '1', |
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'3' => '0' |
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) |
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); |
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$this->assertEquals($result, $expected); |
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} |
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public function testZeros() |
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{ |
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$matLab = $this->getMatLabObject(); |
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$result = $matLab->zeros(2, 1); |
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$expected = array( |
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1 => array( |
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'1' => '0', |
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), |
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2 => array( |
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'1' => '0', |
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) |
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); |
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$this->assertEquals($result, $expected); |
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$result = $matLab->zeros(2); |
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$expected = array( |
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1 => array( |
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'1' => '0', |
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'2' => '0', |
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), |
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2 => array( |
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'1' => '0', |
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'2' => '0', |
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) |
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); |
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$this->assertEquals($result, $expected); |
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$result = $matLab->zeros(2, 3); |
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$expected = array( |
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1 => array( |
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'1' => '0', |
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'2' => '0', |
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'3' => '0' |
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), |
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2 => array( |
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'1' => '0', |
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'2' => '0', |
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'3' => '0' |
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) |
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); |
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$this->assertEquals($result, $expected); |
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} |
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public function testLength() |
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{ |
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$matLab = $this->getMatLabObject(); |
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$vector = array( |
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'1' => '0', |
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'2' => '4', |
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'3' => '9', |
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'4' => '10', |
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'5' => '1', |
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'6' => '2' |
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); |
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$result = $matLab->length($vector); |
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$this->assertEquals($result, 6); |
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$matrix = array( |
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1 => array( |
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'1' => '0', |
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'2' => '0' |
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), |
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2 => array( |
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'1' => '0', |
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'2' => '0', |
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'3' => '0', |
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'4' => '8' |
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), |
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3 => array( |
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'1' => '0', |
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'2' => '0', |
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'3' => '0' |
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), |
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4 => array( |
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'1' => '0', |
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'2' => '0', |
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'3' => '9', |
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'4' => '1' |
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) |
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); |
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$result = $matLab->length($matrix); |
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$this->assertEquals($result, 4); |
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} |
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public function testSum() |
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{ |
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$matLab = $this->getMatLabObject(); |
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$expected = array( |
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0 => array( |
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0 => 13 |
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) |
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); |
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$result = $matLab->sum('5', '8'); |
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$this->assertEquals($result, $expected); |
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$matLab = new MatLabPHP(); |
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$this->assertMatLabPHP($matLab); |
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$expected = array( |
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0 => array( |
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0 => 9, |
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1 => 4, |
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2 => 6 |
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), |
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1 => array( |
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0 => 12, |
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1 => 7, |
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2 => 6 |
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), |
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2 => array( |
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0 => 15, |
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1 => 3, |
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2 => 7 |
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) |
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); |
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$result = $matLab->sum( |
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'[1 3 2; 4 2 5; 6 1 4]', |
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'[8 1 4; 8 5 1; 9 2 3]' |
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); |
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$this->assertEquals($result, $expected); |
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} |
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public function testPrice2Ret() |
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{ |
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$matLab = $this->getMatLabObject(); |
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$seriesPriceOne = array(10, 12, 13, 9, 11, 9); |
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$result = $matLab->price2ret($seriesPriceOne); |
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$expected = array( |
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10 => null, |
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12 => 0.18232155679395, |
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13 => 0.080042707673536, |
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9 => -0.20067069546215, |
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11 => 0.20067069546215 |
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); |
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$this->assertEquals($result, $expected); |
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} |
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public function testMean() |
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{ |
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$matLabPHP = $this->getMatLabObject(); |
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$retFundoX = array(2, 1.5, -2.4, 1.5, 4, 1.2); |
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$mediaRetX = $matLabPHP->mean($retFundoX); |
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$this->assertEquals($mediaRetX, 1.3000000000); |
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$mediaRetX = $matLabPHP->avg($retFundoX); |
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$this->assertEquals($mediaRetX, 1.3000000000); |
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$retFundoY = array(-1.2, 0.2, 1.3, 0, -2, 0.5); |
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$mediaRetY = $matLabPHP->mean($retFundoY); |
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$this->assertEquals($mediaRetY, -0.2000000000); |
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$mediaRetY = $matLabPHP->avg($retFundoY); |
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$this->assertEquals($mediaRetY, -0.2000000000); |
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} |
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public function testStd() |
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{ |
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$matLabPHP = $this->getMatLabObject(); |
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$retFundoX = array(2, 1.5, -2.4, 1.5, 4, 1.2); |
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$desvPadX = $matLabPHP->std($retFundoX, true); |
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$this->assertEquals($desvPadX, 2.0765355763); |
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$desvPadX = $matLabPHP->stdev($retFundoX, true); |
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$this->assertEquals($desvPadX, 2.0765355763); |
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$retFundoY = array(-1.2, 0.2, 1.3, 0, -2, 0.5); |
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$desvPadY = $matLabPHP->std($retFundoY, true); |
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$this->assertEquals($desvPadY, 1.1983321743); |
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$desvPadY = $matLabPHP->stdev($retFundoY, true); |
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$this->assertEquals($desvPadY, 1.1983321743); |
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} |
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public function testVariance() |
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{ |
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$matLabPHP = $this->getMatLabObject(); |
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$retFundoX = array(2, 1.5, -2.4, 1.5, 4, 1.2); |
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$result = $matLabPHP->variance($retFundoX, true); |
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$this->assertEquals($result, 4.3120000000); |
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$retFundoY = array(-1.2, 0.2, 1.3, 0, -2, 0.5); |
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$result = $matLabPHP->variance($retFundoY, true); |
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$this->assertEquals($result, 1.4360000000); |
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} |
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public function testCovariance() |
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{ |
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$matLabPHP = $this->getMatLabObject(); |
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$retFundoX = array(2, 1.5, -2.4, 1.5, 4, 1.2); |
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$retFundoY = array(-1.2, 0.2, 1.3, 0, -2, 0.5); |
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$result = $matLabPHP->covariance($retFundoX, $retFundoY); |
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$this->assertEquals($result, -1.8433333333); |
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$result = $matLabPHP->covar($retFundoX, $retFundoY); |
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$this->assertEquals($result, -1.8433333333); |
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} |
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public function testCorrelation() |
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{ |
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$matLabPHP = $this->getMatLabObject(); |
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$retFundoX = array(2, 1.5, -2.4, 1.5, 4, 1.2); |
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$retFundoY = array(-1.2, 0.2, 1.3, 0, -2, 0.5); |
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$isSample = false; |
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$result = $matLabPHP->correlation($retFundoX, $retFundoY, $isSample); |
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$this->assertEquals($result, -0.88893197); |
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$result = $matLabPHP->correl($retFundoX, $retFundoY, $isSample); |
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$this->assertEquals($result, -0.88893197); |
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$isSample = true; |
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$result = $matLabPHP->correlation($retFundoX, $retFundoY, $isSample); |
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$this->assertEquals($result, -0.74077664); |
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$result = $matLabPHP->correl($retFundoX, $retFundoY, $isSample); |
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$this->assertEquals($result, -0.74077664); |
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} |
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public function getMatLabObject() |
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{ |
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$matLab = new MatLabPHP(); |
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$this->assertMatLabPHP($matLab); |
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return $matLab; |
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} |
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} |
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The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.