<?php

class GdSystemTest extends PHPUnit_Framework_TestCase
{
    public function testMakeFromPath()
    {
        $img = $this->manager()->make('tests/images/circle.png');
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(50, $img->getWidth());
        $this->assertEquals(50, $img->getHeight());
        $this->assertEquals('image/png', $img->mime);
        $this->assertEquals('tests/images', $img->dirname);
        $this->assertEquals('circle.png', $img->basename);
        $this->assertEquals('png', $img->extension);
        $this->assertEquals('circle', $img->filename);
        $this->assertEquals('image/png', $img->mime);
    }

    public function testMakeFromString()
    {
        $str = file_get_contents('tests/images/circle.png');
        $img = $this->manager()->make($str);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(50, $img->getWidth());
        $this->assertEquals(50, $img->getHeight());
        $this->assertEquals('image/png', $img->mime);
    }

    public function testMakeFromResource()
    {
        $resource = imagecreatefrompng('tests/images/circle.png');
        $img = $this->manager()->make($resource);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(50, $img->getWidth());
        $this->assertEquals(50, $img->getHeight());
    }

    public function testMakeFromDataUrl()
    {
        $img = $this->manager()->make('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAGElEQVQYlWM8c+bMfwYiABMxikYVUk8hAHWzA3cRvs4UAAAAAElFTkSuQmCC');
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
    }

    public function testMakeFromBase64()
    {
        $img = $this->manager()->make('iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAAGElEQVQYlWM8c+bMfwYiABMxikYVUk8hAHWzA3cRvs4UAAAAAElFTkSuQmCC');
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
    }

    public function testCanvas()
    {
        $img = $this->manager()->canvas(30, 20);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(30, $img->getWidth());
        $this->assertEquals(20, $img->getHeight());
        $this->assertTransparentPosition($img, 0, 0);
    }

    public function testCanvasWithSolidBackground()
    {
        $img = $this->manager()->canvas(30, 20, 'b53717');
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(30, $img->getWidth());
        $this->assertEquals(20, $img->getHeight());
        $this->assertEquals('#b53717', $img->pickColor(15, 15, 'hex'));
    }

    public function testGetSize()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $size = $img->getSize();
        $this->assertInstanceOf('Intervention\Image\Size', $size);
        $this->assertInternalType('int', $size->width);
        $this->assertInternalType('int', $size->height);
        $this->assertEquals(16, $size->width);
        $this->assertEquals(16, $size->height);
    }

    public function testResizeImage()
    {
        $img = $this->manager()->make('tests/images/circle.png');
        $img->resize(120, 150);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(120, $img->getWidth());
        $this->assertEquals(150, $img->getHeight());
        $this->assertTransparentPosition($img, 0, 0);
    }

    public function testResizeImageOnlyWidth()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resize(120, null);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(120, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertTransparentPosition($img, 0, 15);
    }

    public function testResizeImageOnlyHeight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resize(null, 150);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(150, $img->getHeight());
        $this->assertTransparentPosition($img, 15, 0);
    }

    public function testResizeImageAutoHeight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resize(50, null, function ($constraint) { $constraint->aspectRatio(); });
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(50, $img->getWidth());
        $this->assertEquals(50, $img->getHeight());
        $this->assertTransparentPosition($img, 30, 0);
    }

    public function testResizeImageAutoWidth()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resize(null, 50, function ($constraint) { $constraint->aspectRatio(); });
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(50, $img->getWidth());
        $this->assertEquals(50, $img->getHeight());
        $this->assertTransparentPosition($img, 30, 0);
    }

    public function testResizeDominantWidth()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resize(100, 120, function ($constraint) { $constraint->aspectRatio(); });
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(100, $img->getWidth());
        $this->assertEquals(100, $img->getHeight());
        $this->assertTransparentPosition($img, 60, 0);
    }

    public function testResizeImagePreserveSimpleUpsizing()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resize(100, 100, function ($constraint) { $constraint->aspectRatio(); $constraint->upsize(); });
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertTransparentPosition($img, 15, 0);
    }

    public function testWidenImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->widen(100);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(100, $img->getWidth());
        $this->assertEquals(100, $img->getHeight());
        $this->assertTransparentPosition($img, 60, 0);
    }

    public function testWidenImageWithConstraint()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->widen(100, function ($constraint) {$constraint->upsize();});
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertTransparentPosition($img, 8, 0);
    }

    public function testHeightenImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->heighten(100);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(100, $img->getWidth());
        $this->assertEquals(100, $img->getHeight());
        $this->assertTransparentPosition($img, 60, 0);
    }

    public function testHeightenImageWithConstraint()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->heighten(100, function ($constraint) {$constraint->upsize();});
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('resource', $img->getCore());
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertTransparentPosition($img, 8, 0);
    }

    public function testResizeCanvasCenter()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 4);
        $this->assertColorAtPosition('#445160', $img, 5, 5);
        $this->assertTransparentPosition($img, 0, 5);
        $this->assertTransparentPosition($img, 5, 4);
    }

    public function testResizeCanvasTopLeft()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'top-left');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertTransparentPosition($img, 0, 8);
        $this->assertTransparentPosition($img, 8, 7);
    }

    public function testResizeCanvasTop()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'top');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#445160', $img, 5, 8);
        $this->assertTransparentPosition($img, 0, 8);
        $this->assertTransparentPosition($img, 5, 7);
    }

    public function testResizeCanvasTopRight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'top-right');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#445160', $img, 2, 8);
        $this->assertTransparentPosition($img, 0, 8);
        $this->assertTransparentPosition($img, 2, 7);
    }

    public function testResizeCanvasLeft()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'left');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 4);
        $this->assertColorAtPosition('#445160', $img, 8, 5);
        $this->assertTransparentPosition($img, 0, 5);
        $this->assertTransparentPosition($img, 8, 4);
    }

    public function testResizeCanvasRight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'right');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 4);
        $this->assertColorAtPosition('#445160', $img, 2, 5);
        $this->assertTransparentPosition($img, 0, 5);
        $this->assertTransparentPosition($img, 2, 4);
    }

    public function testResizeCanvasBottomLeft()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'bottom-left');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 1);
        $this->assertColorAtPosition('#445160', $img, 8, 2);
        $this->assertTransparentPosition($img, 0, 2);
        $this->assertTransparentPosition($img, 8, 1);
    }

    public function testResizeCanvasBottomRight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'bottom-right');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 1);
        $this->assertColorAtPosition('#445160', $img, 2, 2);
        $this->assertTransparentPosition($img, 0, 2);
        $this->assertTransparentPosition($img, 2, 1);
    }

    public function testResizeCanvasBottom()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 10, 'bottom');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 1);
        $this->assertColorAtPosition('#445160', $img, 5, 2);
        $this->assertTransparentPosition($img, 0, 2);
        $this->assertTransparentPosition($img, 5, 1);
    }

    public function testResizeCanvasRelativeWithBackground()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(4, 4, 'center', true, '#ff00ff');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(20, $img->getWidth());
        $this->assertEquals(20, $img->getHeight());
        $this->assertColorAtPosition('#ff00ff', $img, 0, 0);
        $this->assertColorAtPosition('#ff00ff', $img, 19, 19);
        $this->assertColorAtPosition('#b4e000', $img, 2, 9);
        $this->assertColorAtPosition('#445160', $img, 10, 10);
        $this->assertTransparentPosition($img, 2, 10);
        $this->assertTransparentPosition($img, 10, 9);
    }

    public function testResizeCanvasJustWidth()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, null);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#445160', $img, 5, 8);
        $this->assertTransparentPosition($img, 0, 8);
        $this->assertTransparentPosition($img, 5, 7);
    }

    public function testResizeCanvasJustHeight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(null, 10);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 4);
        $this->assertColorAtPosition('#445160', $img, 8, 5);
        $this->assertTransparentPosition($img, 0, 5);
        $this->assertTransparentPosition($img, 8, 4);
    }

    public function testResizeCanvasSmallerWidthLargerHeight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(10, 20);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(10, $img->getWidth());
        $this->assertEquals(20, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 9);
        $this->assertColorAtPosition('#445160', $img, 5, 10);
        $this->assertTransparentPosition($img, 0, 10);
        $this->assertTransparentPosition($img, 5, 9);
    }

    public function testResizeCanvasLargerWidthSmallerHeight()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(20, 10);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(20, $img->getWidth());
        $this->assertEquals(10, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 2, 4);
        $this->assertColorAtPosition('#445160', $img, 10, 5);
        $this->assertTransparentPosition($img, 0, 0);
        $this->assertTransparentPosition($img, 2, 5);
        $this->assertTransparentPosition($img, 10, 4);
    }

    public function testResizeCanvasNegative()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(-4, -4);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(12, $img->getWidth());
        $this->assertEquals(12, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 5);
        $this->assertColorAtPosition('#445160', $img, 6, 6);
        $this->assertTransparentPosition($img, 0, 6);
        $this->assertTransparentPosition($img, 6, 5);
    }

    public function testResizeCanvasLargerHeightAutoWidth()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->resizeCanvas(null, 20, 'bottom-left', false, '#ff00ff');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(20, $img->getHeight());
        $this->assertColorAtPosition('#ff00ff', $img, 0, 0);
        $this->assertColorAtPosition('#b4e000', $img, 0, 4);
        $this->assertColorAtPosition('#b4e000', $img, 0, 11);
        $this->assertColorAtPosition('#445160', $img, 8, 12);
        $this->assertTransparentPosition($img, 0, 12);
        $this->assertTransparentPosition($img, 8, 11);
    }

    public function testResizeCanvasBorderNonRelative()
    {
        $img = $this->manager()->canvas(1, 1, 'ff0000');
        $img->resizeCanvas(17, 17, 'center', false, '333333');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(17, $img->getWidth());
        $this->assertEquals(17, $img->getHeight());
        $this->assertColorAtPosition('#333333', $img, 0, 0);
        $this->assertColorAtPosition('#333333', $img, 5, 5);
        $this->assertColorAtPosition('#333333', $img, 7, 7);
        $this->assertColorAtPosition('#ff0000', $img, 8, 8);
    }

    public function testCropImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->crop(6, 6); // should be centered without pos.
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(6, $img->getWidth());
        $this->assertEquals(6, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 2);
        $this->assertColorAtPosition('#445160', $img, 3, 3);
        $this->assertTransparentPosition($img, 0, 3);
        $this->assertTransparentPosition($img, 3, 2);
    }

    public function testCropImageWithPosition()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->crop(4, 4, 7, 7); // should be centered without pos.
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(4, $img->getWidth());
        $this->assertEquals(4, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 0);
        $this->assertColorAtPosition('#445160', $img, 1, 1);
        $this->assertTransparentPosition($img, 0, 1);
        $this->assertTransparentPosition($img, 1, 0);
    }

    public function testFitImageSquare()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->fit(6);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(6, $img->getWidth());
        $this->assertEquals(6, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 2);
        $this->assertColorAtPosition('#445060', $img, 3, 3);
        $this->assertTransparentPosition($img, 0, 3);
        $this->assertTransparentPosition($img, 3, 2);
    }

    public function testFitImageRectangle()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->fit(12, 6);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(12, $img->getWidth());
        $this->assertEquals(6, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 2);
        $this->assertColorAtPosition('#445160', $img, 6, 3);
        $this->assertTransparentPosition($img, 0, 3);
        $this->assertTransparentPosition($img, 6, 2);
    }

    public function testFitImageWithConstraintUpsize()
    {
        $img = $this->manager()->make('tests/images/trim.png');
        $img->fit(300, 150, function ($constraint) {$constraint->upsize();});
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(50, $img->getWidth());
        $this->assertEquals(25, $img->getHeight());
        $this->assertColorAtPosition('#00aef0', $img, 0, 0);
        $this->assertColorAtPosition('#afa94c', $img, 17, 0);
        $this->assertColorAtPosition('#ffa601', $img, 24, 0);
    }

    public function testFlipImageHorizontal()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->flip('h');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 8, 7);
        $this->assertColorAtPosition('#445160', $img, 0, 8);
        $this->assertTransparentPosition($img, 0, 7);
        $this->assertTransparentPosition($img, 8, 8);
    }

    public function testFlipImageVertical()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->flip('v');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 8);
        $this->assertColorAtPosition('#445160', $img, 8, 7);
        $this->assertTransparentPosition($img, 0, 7);
        $this->assertTransparentPosition($img, 8, 8);
    }

    public function testRotateImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->rotate(90);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 8);
        $this->assertColorAtPosition('#445160', $img, 8, 7);
        $this->assertTransparentPosition($img, 0, 7);
        $this->assertTransparentPosition($img, 8, 8);
    }

    public function testInsertImage()
    {
        $watermark = $this->manager()->canvas(16, 16, '#0000ff'); // create watermark

        // top-left anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'top-left', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(0, 0, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(16, 16, 'hex'));

        // top-left anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'top-left', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#ff0000', $img->pickColor(9, 9, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(10, 10, 'hex'));

        // top anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'top', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#ff0000', $img->pickColor(0, 0, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(23, 15, 'hex'));

        // top anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'top', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(18, 10, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(31, 26, 'hex'));

        // top-right anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'top-right', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#ff0000', $img->pickColor(15, 0, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(31, 0, 'hex'));

        // top-right anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'top-right', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#ff0000', $img->pickColor(6, 9, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(21, 25, 'hex'));

        // left anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'left', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(15, 23, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(0, 7, 'hex'));

        // left anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'left', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#ff0000', $img->pickColor(8, 23, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(10, 7, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(25, 23, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(25, 8, 'hex'));

        // right anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'right', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(31, 23, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(15, 15, 'hex'));

        // right anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'right', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#ff0000', $img->pickColor(5, 8, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(22, 23, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(21, 7, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(6, 8, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(21, 23, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(6, 23, 'hex'));

        // bottom-left anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'bottom-left', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(15, 31, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(0, 15, 'hex'));

        // bottom-left anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'bottom-left', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(10, 21, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(9, 20, 'hex'));

        // bottom anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'bottom', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(8, 16, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(8, 15, 'hex'));

        // bottom anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'bottom', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#ff0000', $img->pickColor(5, 8, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(23, 22, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(24, 21, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(7, 6, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(8, 6, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(23, 21, 'hex'));
        $this->assertEquals('#0000ff', $img->pickColor(23, 6, 'hex'));

        // bottom-right anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'bottom-right', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(16, 16, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(15, 16, 'hex'));

        // bottom-right anchor coordinates
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'bottom-right', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(21, 21, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(22, 22, 'hex'));

        // center anchor
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'center', 0, 0);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(23, 23, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(8, 7, 'hex'));

        // center anchor coordinates / coordinates will be ignored for center
        $img = $this->manager()->canvas(32, 32, '#ff0000'); // create canvas
        $img->insert($watermark, 'center', 10, 10);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals($img->getWidth(), 32);
        $this->assertEquals($img->getHeight(), 32);
        $this->assertEquals('#0000ff', $img->pickColor(23, 23, 'hex'));
        $this->assertEquals('#ff0000', $img->pickColor(8, 7, 'hex'));
    }

    public function testInsertWithAlphaChannel()
    {
        $img = $this->manager()->canvas(50, 50, 'ff0000');
        $img->insert('tests/images/circle.png');
        $this->assertColorAtPosition('#ff0000', $img, 0, 0);
        $this->assertColorAtPosition('#320000', $img, 30, 30);
    }

    public function testInsertAfterResize()
    {
        $img = $this->manager()->make('tests/images/trim.png');
        $img->resize(16, 16)->insert('tests/images/tile.png');
        $this->assertInternalType('int', $img->getWidth());
        $this->assertInternalType('int', $img->getHeight());
        $this->assertEquals(16, $img->getWidth());
        $this->assertEquals(16, $img->getHeight());
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#00aef0', $img, 0, 8);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertColorAtPosition('#ffa601', $img, 8, 7);
    }

    public function testInsertResource()
    {
        $resource = imagecreatefrompng('tests/images/tile.png');
        $img = $this->manager()->make('tests/images/trim.png');
        $img->insert($resource);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#00aef0', $img, 0, 8);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertColorAtPosition('#00aef0', $img, 8, 7);
        $this->assertColorAtPosition('#ffa601', $img, 24, 24);
    }

    public function testInsertBinary()
    {
        $data = file_get_contents('tests/images/tile.png');
        $img = $this->manager()->make('tests/images/trim.png');
        $img->insert($data);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#00aef0', $img, 0, 8);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertColorAtPosition('#00aef0', $img, 8, 7);
        $this->assertColorAtPosition('#ffa601', $img, 24, 24);
    }

    public function testInsertInterventionImage()
    {
        $obj = $this->manager()->make('tests/images/tile.png');
        $img = $this->manager()->make('tests/images/trim.png');
        $img->insert($obj);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertColorAtPosition('#b4e000', $img, 0, 7);
        $this->assertColorAtPosition('#00aef0', $img, 0, 8);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertColorAtPosition('#00aef0', $img, 8, 7);
        $this->assertColorAtPosition('#ffa601', $img, 24, 24);
    }

    public function testOpacity()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->opacity(50);
        $checkColor = $img->pickColor(7, 7, 'array');
        $this->assertEquals($checkColor[0], 180);
        $this->assertEquals($checkColor[1], 224);
        $this->assertEquals($checkColor[2], 0);
        $this->assertEquals($checkColor[3], 0.5);
        $checkColor = $img->pickColor(8, 8, 'array');
        $this->assertEquals($checkColor[0], 68);
        $this->assertEquals($checkColor[1], 81);
        $this->assertEquals($checkColor[2], 96);
        $this->assertEquals($checkColor[3], 0.5);
        $this->assertTransparentPosition($img, 0, 11);
    }

    public function testMaskImage()
    {
        $img = $this->manager()->make('tests/images/trim.png');
        $img->mask('tests/images/gradient.png');
        $this->assertTransparentPosition($img, 0, 0);
        $this->assertTransparentPosition($img, 23, 23);
        $checkColor = $img->pickColor(23, 24, 'array');
        $this->assertEquals($checkColor[0], 255);
        $this->assertEquals($checkColor[1], 166);
        $this->assertEquals($checkColor[2], 1);
        $this->assertEquals($checkColor[3], 0.97);
        $checkColor = $img->pickColor(39, 25, 'array');
        $this->assertEquals($checkColor[0], 0);
        $this->assertEquals($checkColor[1], 174);
        $this->assertEquals($checkColor[2], 240);
        $this->assertEquals($checkColor[3], 0.32);
    }

    public function testMaskImageWithAlpha()
    {
        $img = $this->manager()->make('tests/images/trim.png');
        $img->mask('tests/images/star.png', true);
        $this->assertTransparentPosition($img, 0, 0);
        $this->assertTransparentPosition($img, 16, 16);
        $checkColor = $img->pickColor(18, 18, 'array');
        $this->assertEquals($checkColor[0], 255);
        $this->assertEquals($checkColor[1], 166);
        $this->assertEquals($checkColor[2], 1);
        $this->assertEquals($checkColor[3], 0.65);
        $checkColor = $img->pickColor(24, 10, 'array');
        $this->assertEquals($checkColor[0], 0);
        $this->assertEquals($checkColor[1], 174);
        $this->assertEquals($checkColor[2], 240);
        $this->assertEquals($checkColor[3], 0.80);
    }

    public function testPixelateImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->pixelate(20);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
    }

    public function testGreyscaleImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->greyscale();
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertTransparentPosition($img, 8, 0);
        $this->assertColorAtPosition('#b9b9b9', $img, 0, 0);
    }

    public function testInvertImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->invert();
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertTransparentPosition($img, 8, 0);
        $this->assertColorAtPosition('#4b1fff', $img, 0, 0);
    }

    public function testBlurImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->blur(1);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
    }

    public function testFillImageWithColor()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->fill('b53717');
        $this->assertColorAtPosition('#b53717', $img, 0, 0);
        $this->assertColorAtPosition('#b53717', $img, 15, 15);
    }

    public function testFillImageWithColorAtPosition()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $img->fill('b53717', 0, 0);
        $this->assertTransparentPosition($img, 0, 8);
        $this->assertColorAtPosition('#b53717', $img, 0, 0);
        $this->assertColorAtPosition('#445160', $img, 15, 15);
    }

    public function testFillImageWithResource()
    {
        $resource = imagecreatefrompng('tests/images/tile.png');
        $img = $this->manager()->make('tests/images/trim.png');
        $img->fill($resource, 0, 0);
        $this->assertColorAtPosition('#b4e000', $img, 0, 0);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertColorAtPosition('#00aef0', $img, 8, 7);
        $this->assertColorAtPosition('#ffa601', $img, 20, 20);
    }

    public function testFillImageWithBinary()
    {
        $data = file_get_contents('tests/images/tile.png');
        $img = $this->manager()->make('tests/images/trim.png');
        $img->fill($data, 0, 0);
        $this->assertColorAtPosition('#b4e000', $img, 0, 0);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertColorAtPosition('#00aef0', $img, 8, 7);
        $this->assertColorAtPosition('#ffa601', $img, 20, 20);
    }

    public function testFillImageWithInterventionImage()
    {
        $obj = $this->manager()->make('tests/images/tile.png');
        $img = $this->manager()->make('tests/images/trim.png');
        $img->fill($obj, 0, 0);
        $this->assertColorAtPosition('#b4e000', $img, 0, 0);
        $this->assertColorAtPosition('#445160', $img, 8, 8);
        $this->assertColorAtPosition('#00aef0', $img, 8, 7);
        $this->assertColorAtPosition('#ffa601', $img, 20, 20);
    }

    public function testPixelImage()
    {
        $img = $this->manager()->make('tests/images/tile.png');
        $coords = array(array(5, 5), array(12, 12));
        $img = $img->pixel('fdf5e4', $coords[0][0], $coords[0][1]);
        $img = $img->pixel(array(255, 255, 255), $coords[1][0], $coords[1][1]);
        $this->assertEquals('#fdf5e4', $img->pickColor($coords[0][0], $coords[0][1], 'hex'));
        $this->assertEquals('#ffffff', $img->pickColor($coords[1][0], $coords[1][1], 'hex'));
    }

    public function testTextImage()
    {
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $img = $img->text('0', 3, 11);
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertEquals('a9e2b15452b2a4637b65625188d206f6', $img->checksum());

        
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $img = $img->text('0', 8, 2, function($font) {
            $font->align('center');
            $font->valign('top');
            $font->color('000000');
        });
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertEquals('649f3f529d3931c56601155fd2680959', $img->checksum());
        
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $img = $img->text('0', 8, 8, function($font) {
            $font->align('right');
            $font->valign('middle');
            $font->file(2);
            $font->color('000000');
        });
        $this->assertInstanceOf('Intervention\Image\Image', $img);
        $this->assertEquals('c0dda67589c46a90d78a97b891a811ee', $img->checksum());
    }

    public function testRectangleImage()
    {
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $img->rectangle(5, 5, 11, 11, function ($draw) { $draw->background('#ff0000'); $draw->border(1, '#0000ff'); });
        $this->assertEquals('e95487dcc29daf371a0e9190bff8dbfe', $img->checksum());
    }

    public function testLineImage()
    {
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $img->line(0, 0, 15, 15, function ($draw) { $draw->color('#ff0000'); });
        $this->assertEquals('a6237d34f6e95f30d2fc91a46bd058e6', $img->checksum());
    }

    public function testEllipseImage()
    {
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $img->ellipse(12, 8, 8, 8, function ($draw) { $draw->background('#ff0000'); $draw->border(1, '#0000ff'); });
        $this->assertEquals('080d9dd92ebe22f976c3c703cba33510', $img->checksum());
    }

    public function testCircleImage()
    {
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $img->circle(12, 8, 8, function ($draw) { $draw->background('#ff0000'); $draw->border(1, '#0000ff'); });
        $this->assertEquals('c3bff06c20244ba14e898e39ea0efd76', $img->checksum());
    }

    public function testPolygonImage()
    {
        $img = $this->manager()->canvas(16, 16, 'ffffff');
        $points = array(3, 3, 11, 11, 7, 13);
        $img->polygon($points, function ($draw) { $draw->background('#ff0000'); $draw->border(1, '#0000ff'); });
        $this->assertEquals('e534ff90c8026f9317b99071fda01ed4', $img->che