138 lines
3.8 KiB
PHP
138 lines
3.8 KiB
PHP
<?php
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declare(strict_types=1);
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namespace ItsAMirko\RayTracer\Primitives;
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use Exception;
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use PHPUnit\Framework\TestCase;
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use function random_int;
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class ColorTest extends TestCase
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{
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/**
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* @var float
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*/
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private $red;
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/**
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* @var float
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*/
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private $green;
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/**
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* @var float
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*/
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private $blue;
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/**
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* @throws Exception
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*/
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protected function setUp(): void
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{
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parent::setUp();
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$this->red = random_int(0, 100) / 100;
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$this->green = random_int(0, 100) / 100;
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$this->blue = random_int(0, 100) / 100;
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}
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/**
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* @dataProvider parametersForHexValues
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*
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* @param int $red
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* @param int $green
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* @param int $blue
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* @param Color $color
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*/
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public function testProvidesHexValues(int $red, int $green, int $blue, Color $color): void
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{
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$this->assertSame($red, $color->redAsHex());
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$this->assertSame($green, $color->greenAsHex());
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$this->assertSame($blue, $color->blueAsHex());
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}
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public function parametersForHexValues()
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{
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return [
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[255, 0, 0, new Color(1.5, 0.0, 0.0)],
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[0, 128, 0, new Color(0.0, 0.5, 0.0)],
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[0, 0, 255, new Color(-0.5, 0.0, 1.0)],
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];
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}
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public function testProvidedColorValues(): void
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{
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$color = new Color($this->red, $this->green, $this->blue);
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$this->assertSame($this->red, $color->red());
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$this->assertSame($this->green, $color->green());
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$this->assertSame($this->blue, $color->blue());
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}
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public function testCreatesNewColorByAddingAColor(): void
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{
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$color1 = new Color(1.0, 2.0, 3.0);
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$color2 = new Color($this->red, $this->green, $this->blue);
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$actualColor = $color1->plusColor($color2);
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$this->assertInstanceOf(Color::class, $actualColor);
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$this->assertSame(1 + $this->red, $actualColor->red());
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$this->assertSame(2 + $this->green, $actualColor->green());
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$this->assertSame(3 + $this->blue, $actualColor->blue());
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}
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public function testCreatesNewColorBySubtractingAColor(): void
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{
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$color1 = new Color(1.0, 2.0, 3.0);
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$color2 = new Color($this->red, $this->green, $this->blue);
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$actualColor = $color1->minusColor($color2);
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$this->assertInstanceOf(Color::class, $actualColor);
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$this->assertSame(1 - $this->red, $actualColor->red());
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$this->assertSame(2 - $this->green, $actualColor->green());
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$this->assertSame(3 - $this->blue, $actualColor->blue());
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}
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/**
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* @throws Exception
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*/
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public function testCreatesNewColorByMultiplyingWithAScalar(): void
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{
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$color = new Color($this->red, $this->green, $this->blue);
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$scalar = random_int(0, 100) / 100;
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$actualColor = $color->multiplyWithScalar($scalar);
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$this->assertInstanceOf(Color::class, $actualColor);
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$this->assertSame($scalar * $this->red, $actualColor->red());
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$this->assertSame($scalar * $this->green, $actualColor->green());
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$this->assertSame($scalar * $this->blue, $actualColor->blue());
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}
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/**
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* @throws Exception
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*/
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public function testCreatesNewColorByMultiplyingWithAColor(): void
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{
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$color1 = new Color(1.0, 2.0, 3.0);
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$color2 = new Color($this->red, $this->green, $this->blue);
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$actualColor = $color1->multiplyWithColor($color2);
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$this->assertInstanceOf(Color::class, $actualColor);
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$this->assertSame(1.0 * $this->red, $actualColor->red());
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$this->assertSame(2.0 * $this->green, $actualColor->green());
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$this->assertSame(3.0 * $this->blue, $actualColor->blue());
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}
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}
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