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   1  <?php
   2  
   3  class common_blank_test extends DokuWikiTest {
   4  
   5      private $nope;
   6  
   7      function test_blank() {
   8          $tests = array(
   9              // these are not blank
  10              array('string', false),
  11              array(1, false),
  12              array(1.0, false),
  13              array(0xff, false),
  14              array(array('something'), false),
  15  
  16              // these aren't either!
  17              array('0', false),
  18              array(' ', false),
  19              array('0.0', false),
  20              array(0, false),
  21              array(0.0, false),
  22              array(0x00, false),
  23              array(true, false),
  24  
  25              // but these are
  26              array('', true),
  27              array(array(), true),
  28              array(null, true),
  29              array(false, true),
  30              array("\0", true)
  31          );
  32  
  33          foreach($tests as $test) {
  34              $this->assertEquals($test[1], blank($test[0]), "using " . var_export($test[0], true));
  35          }
  36      }
  37  
  38      function test_trim() {
  39          $whitespace = " \t\r\n";
  40          $this->assertFalse(blank($whitespace), "using default \$trim value");
  41          $this->assertFalse(blank($whitespace, false), "using \$trim = false");
  42          $this->assertTrue(blank($whitespace, true), "using \$trim = true");
  43      }
  44  
  45      function test_undefined() {
  46          $undef = array();
  47          $this->assertTrue(blank($var), "using undefined/unitialised variable");
  48          $this->assertTrue(blank($undef['nope']), "using undefined array index");
  49          $this->assertTrue(blank($this->nope), "using unset object property");
  50      }
  51  
  52  }