tests/phpunit/unit/includes/libs/DeferredStringifierTest.php

   1 <?php
   2
   3 /**
   4  * @covers DeferredStringifier
   5  */
   6 class DeferredStringifierTest extends PHPUnit\Framework\TestCase {
   7
   8         use MediaWikiCoversValidator;
   9
  10         /**
  11          * @dataProvider provideToString
  12          */
  13         public function testToString( $params, $expected ) {
  14                 $class = new ReflectionClass( DeferredStringifier::class );
  15                 $ds = $class->newInstanceArgs( $params );
  16                 $this->assertEquals( $expected, (string)$ds );
  17         }
  18
  19         public static function provideToString() {
  20                 return [
  21                         // No args
  22                         [
  23                                 [
  24                                         function () {
  25                                                 return 'foo';
  26                                         }
  27                                 ],
  28                                 'foo'
  29                         ],
  30                         // Has args
  31                         [
  32                                 [
  33                                         function ( $i ) {
  34                                                 return $i;
  35                                         },
  36                                         'bar'
  37                                 ],
  38                                 'bar'
  39                         ],
  40                 ];
  41         }
  42
  43         /**
  44          * Verify that the callback is not called if
  45          * it is never converted to a string
  46          */
  47         public function testCallbackNotCalled() {
  48                 $ds = new DeferredStringifier( function () {
  49                         throw new Exception( 'This should not be reached!' );
  50                 } );
  51                 // No exception was thrown
  52                 $this->assertTrue( true );
  53         }
  54 }