aleph1.co.uk Git - yaffs-website/blob - web/core/tests/Drupal/Tests/Component/Diff/DiffFormatterTest.php

   1 <?php
   2
   3 namespace Drupal\Tests\Component\Diff;
   4
   5 use Drupal\Component\Diff\Diff;
   6 use Drupal\Component\Diff\DiffFormatter;
   7 use PHPUnit\Framework\TestCase;
   8
   9 /**
  10  * Test DiffFormatter classes.
  11  *
  12  * @coversDefaultClass \Drupal\Component\Diff\DiffFormatter
  13  *
  14  * @group Diff
  15  */
  16 class DiffFormatterTest extends TestCase {
  17
  18   /**
  19    * @return array
  20    *   - Expected formatted diff output.
  21    *   - First array of text to diff.
  22    *   - Second array of text to diff.
  23    */
  24   public function provideTestDiff() {
  25     return [
  26       'empty' => ['', [], []],
  27       'add' => [
  28         "3a3\n> line2a\n",
  29         ['line1', 'line2', 'line3'],
  30         ['line1', 'line2', 'line2a', 'line3'],
  31       ],
  32       'delete' => [
  33         "3d3\n< line2a\n",
  34         ['line1', 'line2', 'line2a', 'line3'],
  35         ['line1', 'line2', 'line3'],
  36       ],
  37       'change' => [
  38         "3c3\n< line2a\n---\n> line2b\n",
  39         ['line1', 'line2', 'line2a', 'line3'],
  40         ['line1', 'line2', 'line2b', 'line3'],
  41       ],
  42     ];
  43   }
  44
  45   /**
  46    * Tests whether op classes returned by DiffEngine::diff() match expectations.
  47    *
  48    * @covers ::format
  49    * @dataProvider provideTestDiff
  50    */
  51   public function testDiff($expected, $from, $to) {
  52     $diff = new Diff($from, $to);
  53     $formatter = new DiffFormatter();
  54     $output = $formatter->format($diff);
  55     $this->assertEquals($expected, $output);
  56   }
  57
  58 }