View source  
  <?php
namespace org\bovigo\vfs\content;
class LargeFileContentTestCase extends \PHPUnit_Framework_TestCase {
  
  private $largeFileContent;
  
  public function setUp() {
    $this->largeFileContent = new LargeFileContent(100);
  }
  
  public function hasSizeOriginallyGiven() {
    $this
      ->assertEquals(100, $this->largeFileContent
      ->size());
  }
  
  public function contentIsFilledUpWithSpacesIfNoDataWritten() {
    $this
      ->assertEquals(str_repeat(' ', 100), $this->largeFileContent
      ->content());
  }
  
  public function readReturnsSpacesWhenNothingWrittenAtOffset() {
    $this
      ->assertEquals(str_repeat(' ', 10), $this->largeFileContent
      ->read(10));
  }
  
  public function readReturnsContentFilledWithSpaces() {
    $this->largeFileContent
      ->write('foobarbaz');
    $this->largeFileContent
      ->seek(0, SEEK_SET);
    $this
      ->assertEquals('foobarbaz ', $this->largeFileContent
      ->read(10));
  }
  
  public function writesDataAtStartWhenOffsetNotMoved() {
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals('foobarbaz' . str_repeat(' ', 91), $this->largeFileContent
      ->content());
  }
  
  public function writeDataAtStartDoesNotIncreaseSize() {
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals(100, $this->largeFileContent
      ->size());
  }
  
  public function writesDataAtOffsetWhenOffsetMoved() {
    $this->largeFileContent
      ->seek(50, SEEK_SET);
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals(str_repeat(' ', 50) . 'foobarbaz' . str_repeat(' ', 41), $this->largeFileContent
      ->content());
  }
  
  public function writeDataInBetweenDoesNotIncreaseSize() {
    $this->largeFileContent
      ->seek(50, SEEK_SET);
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals(100, $this->largeFileContent
      ->size());
  }
  
  public function writesDataOverEndWhenOffsetAndDataLengthLargerThanSize() {
    $this->largeFileContent
      ->seek(95, SEEK_SET);
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals(str_repeat(' ', 95) . 'foobarbaz', $this->largeFileContent
      ->content());
  }
  
  public function writeDataOverLastOffsetIncreasesSize() {
    $this->largeFileContent
      ->seek(95, SEEK_SET);
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals(104, $this->largeFileContent
      ->size());
  }
  
  public function writesDataAfterEndWhenOffsetAfterEnd() {
    $this->largeFileContent
      ->seek(0, SEEK_END);
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals(str_repeat(' ', 100) . 'foobarbaz', $this->largeFileContent
      ->content());
  }
  
  public function writeDataAfterLastOffsetIncreasesSize() {
    $this->largeFileContent
      ->seek(0, SEEK_END);
    $this
      ->assertEquals(9, $this->largeFileContent
      ->write('foobarbaz'));
    $this
      ->assertEquals(109, $this->largeFileContent
      ->size());
  }
  
  public function truncateReducesSize() {
    $this
      ->assertTrue($this->largeFileContent
      ->truncate(50));
    $this
      ->assertEquals(50, $this->largeFileContent
      ->size());
  }
  
  public function truncateRemovesWrittenContentAfterOffset() {
    $this->largeFileContent
      ->seek(45, SEEK_SET);
    $this->largeFileContent
      ->write('foobarbaz');
    $this
      ->assertTrue($this->largeFileContent
      ->truncate(50));
    $this
      ->assertEquals(str_repeat(' ', 45) . 'fooba', $this->largeFileContent
      ->content());
  }
  
  public function createInstanceWithKilobytes() {
    $this
      ->assertEquals(100 * 1024, LargeFileContent::withKilobytes(100)
      ->size());
  }
  
  public function createInstanceWithMegabytes() {
    $this
      ->assertEquals(100 * 1024 * 1024, LargeFileContent::withMegabytes(100)
      ->size());
  }
  
  public function createInstanceWithGigabytes() {
    $this
      ->assertEquals(100 * 1024 * 1024 * 1024, LargeFileContent::withGigabytes(100)
      ->size());
  }
}