public function SaveDataTest::testExistingError in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/file/tests/src/Kernel/SaveDataTest.php \Drupal\Tests\file\Kernel\SaveDataTest::testExistingError()

Tests that file_save_data() fails overwriting an existing file.

File

core/modules/file/tests/src/Kernel/SaveDataTest.php, line 130

Class

SaveDataTest

Tests the file_save_data() function.

Namespace

Drupal\Tests\file\Kernel

Code

public function testExistingError() {
  $contents = $this
    ->randomMachineName(8);
  $existing = $this
    ->createFile(NULL, $contents);

  // Check the overwrite error.
  $result = file_save_data('asdf', $existing
    ->getFileUri(), FileSystemInterface::EXISTS_ERROR);
  $this
    ->assertFalse($result, 'Overwriting a file fails when FileSystemInterface::EXISTS_ERROR is specified.');
  $this
    ->assertEquals($contents, file_get_contents($existing
    ->getFileUri()), 'Contents of existing file were unchanged.');

  // Check that no hooks were called while failing.
  $this
    ->assertFileHooksCalled([]);

  // Ensure that the existing file wasn't overwritten.
  $this
    ->assertFileUnchanged($existing, File::load($existing
    ->id()));
}