root
56 lines
2.0 KiB
PHP
56 lines
2.0 KiB
PHP
<?php
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/*
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* Many of these tests use an example image like this-
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*╭────╮
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*│░░▒▒│ ░░ = 255 ▓▓ = 80
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*│▓▓██│ ▒▒ = 160 ██ = 0
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*╰────╯
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*/
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use PHPUnit\Framework\TestCase;
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use Mike42\GfxPhp\GrayscaleRasterImage;
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use Mike42\GfxPhp\RgbRasterImage;
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class GrayscaleRasterImageTest extends TestCase {
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protected function createGrayscaleTestImage() {
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$image = GrayscaleRasterImage::create(2, 2);
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$image -> setPixel(0, 0, 255);
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$image -> setPixel(1, 0, 160);
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$image -> setPixel(0, 1, 80);
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$image -> setPixel(1, 1, 0);
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return $image;
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}
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public function testCreate()
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{
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$img = $this -> createGrayscaleTestImage();
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$this -> assertEquals(2, $img -> getWidth());
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$this -> assertEquals(2, $img -> getHeight());
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$this -> assertEquals(255, $img -> getMaxVal());
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$this -> assertEquals("▄▄\n", $img -> toBlackAndWhite() -> toString());
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}
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public function testToRgb()
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{
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$white = RgbRasterImage::rgbToInt(255, 255, 255);
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$lightGray = RgbRasterImage::rgbToInt(160, 160, 160);
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$darkGray = RgbRasterImage::rgbToInt(80, 80, 80);
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$black = RgbRasterImage::rgbToInt(0, 0, 0);
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$img = $this -> createGrayscaleTestImage() -> toRgb();
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$this -> assertEquals($white, $img -> getPixel(0, 0));
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$this -> assertEquals($lightGray, $img -> getPixel(1, 0));
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$this -> assertEquals($darkGray, $img -> getPixel(0, 1));
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$this -> assertEquals($black, $img -> getPixel(1, 1));
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}
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public function testToIndexed()
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{
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// Same raster data is used, with grayscale 'palette'
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$img = $this -> createGrayscaleTestImage() -> toIndexed();
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$this -> assertEquals(255, $img -> getPixel(0, 0));
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$this -> assertEquals(160, $img -> getPixel(1, 0));
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$this -> assertEquals(80, $img -> getPixel(0, 1));
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$this -> assertEquals(0, $img -> getPixel(1, 1));
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}
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} |