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Differences Between: [Versions 310 and 403] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  namespace core;
  18  
  19  /**
  20   * A set of tests for some of the gd functionality within Moodle.
  21   *
  22   * @package    core
  23   * @category   test
  24   * @copyright  2015 Andrew Nicols <andrew@nicols.co.uk>
  25   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  26   */
  27  class gdlib_test extends \basic_testcase {
  28  
  29      private $fixturepath = null;
  30  
  31      public function setUp(): void {
  32          $this->fixturepath = __DIR__ . DIRECTORY_SEPARATOR . 'fixtures' . DIRECTORY_SEPARATOR;
  33      }
  34  
  35      public function test_generate_image_thumbnail() {
  36          global $CFG;
  37          require_once($CFG->libdir . '/gdlib.php');
  38  
  39          // Test with meaningless data.
  40  
  41          // Now use a fixture.
  42          $pngpath = $this->fixturepath . 'gd-logo.png';
  43          $pngthumb = generate_image_thumbnail($pngpath, 24, 24);
  44          $this->assertTrue(is_string($pngthumb));
  45  
  46          // And check that the generated image was of the correct proportions and mimetype.
  47          $imageinfo = getimagesizefromstring($pngthumb);
  48          $this->assertEquals(24, $imageinfo[0]);
  49          $this->assertEquals(24, $imageinfo[1]);
  50          $this->assertEquals('image/png', $imageinfo['mime']);
  51      }
  52  
  53      public function test_generate_image_thumbnail_from_string() {
  54          global $CFG;
  55          require_once($CFG->libdir . '/gdlib.php');
  56  
  57          // Test with meaningless data.
  58  
  59          // First empty values.
  60          $this->assertFalse(generate_image_thumbnail_from_string('', 24, 24));
  61          $this->assertFalse(generate_image_thumbnail_from_string('invalid', 0, 24));
  62          $this->assertFalse(generate_image_thumbnail_from_string('invalid', 24, 0));
  63  
  64          // Now an invalid string.
  65          $this->assertFalse(generate_image_thumbnail_from_string('invalid', 24, 24));
  66  
  67          // Now use a fixture.
  68          $pngpath = $this->fixturepath . 'gd-logo.png';
  69          $pngdata = file_get_contents($pngpath);
  70          $pngthumb = generate_image_thumbnail_from_string($pngdata, 24, 24);
  71          $this->assertTrue(is_string($pngthumb));
  72  
  73          // And check that the generated image was of the correct proportions and mimetype.
  74          $imageinfo = getimagesizefromstring($pngthumb);
  75          $this->assertEquals(24, $imageinfo[0]);
  76          $this->assertEquals(24, $imageinfo[1]);
  77          $this->assertEquals('image/png', $imageinfo['mime']);
  78      }
  79  
  80      public function test_resize_image() {
  81          global $CFG;
  82          require_once($CFG->libdir . '/gdlib.php');
  83  
  84          $pngpath = $this->fixturepath . 'gd-logo.png';
  85  
  86          // Preferred height.
  87          $newpng = resize_image($pngpath, null, 24);
  88          $this->assertTrue(is_string($newpng));
  89          $imageinfo = getimagesizefromstring($newpng);
  90          $this->assertEquals(89, $imageinfo[0]);
  91          $this->assertEquals(24, $imageinfo[1]);
  92          $this->assertEquals('image/png', $imageinfo['mime']);
  93  
  94          // Preferred width.
  95          $newpng = resize_image($pngpath, 100, null);
  96          $this->assertTrue(is_string($newpng));
  97          $imageinfo = getimagesizefromstring($newpng);
  98          $this->assertEquals(100, $imageinfo[0]);
  99          $this->assertEquals(26, $imageinfo[1]);
 100          $this->assertEquals('image/png', $imageinfo['mime']);
 101  
 102          // Preferred width and height.
 103          $newpng = resize_image($pngpath, 50, 50);
 104          $this->assertTrue(is_string($newpng));
 105          $imageinfo = getimagesizefromstring($newpng);
 106          $this->assertEquals(50, $imageinfo[0]);
 107          $this->assertEquals(13, $imageinfo[1]);
 108          $this->assertEquals('image/png', $imageinfo['mime']);
 109      }
 110  
 111      public function test_resize_image_from_image() {
 112          global $CFG;
 113          require_once($CFG->libdir . '/gdlib.php');
 114  
 115          $pngpath = $this->fixturepath . 'gd-logo.png';
 116          $origimageinfo = getimagesize($pngpath);
 117          $imagecontent = file_get_contents($pngpath);
 118  
 119          // Preferred height.
 120          $imageresource = imagecreatefromstring($imagecontent);
 121          $newpng = resize_image_from_image($imageresource, $origimageinfo, null, 24);
 122          $this->assertTrue(is_string($newpng));
 123          $imageinfo = getimagesizefromstring($newpng);
 124          $this->assertEquals(89, $imageinfo[0]);
 125          $this->assertEquals(24, $imageinfo[1]);
 126          $this->assertEquals('image/png', $imageinfo['mime']);
 127  
 128          // Preferred width.
 129          $imageresource = imagecreatefromstring($imagecontent);
 130          $newpng = resize_image_from_image($imageresource, $origimageinfo, 100, null);
 131          $this->assertTrue(is_string($newpng));
 132          $imageinfo = getimagesizefromstring($newpng);
 133          $this->assertEquals(100, $imageinfo[0]);
 134          $this->assertEquals(26, $imageinfo[1]);
 135          $this->assertEquals('image/png', $imageinfo['mime']);
 136  
 137          // Preferred width and height.
 138          $imageresource = imagecreatefromstring($imagecontent);
 139          $newpng = resize_image_from_image($imageresource, $origimageinfo, 50, 50);
 140          $this->assertTrue(is_string($newpng));
 141          $imageinfo = getimagesizefromstring($newpng);
 142          $this->assertEquals(50, $imageinfo[0]);
 143          $this->assertEquals(13, $imageinfo[1]);
 144          $this->assertEquals('image/png', $imageinfo['mime']);
 145      }
 146  
 147  }