function FileFieldWidgetTest::testSingleValuedWidget

Tests upload and remove buttons for a single-valued File field.

File

core/modules/file/tests/src/Functional/FileFieldWidgetTest.php, line 83

Class

FileFieldWidgetTest

Tests the file field widget with public and private files.

Namespace

Code

public function testSingleValuedWidget() : void {
  $node_storage = $this->container
    ->get('entity_type.manager')
    ->getStorage('node');
  $type_name = 'article';
  $field_name = $this->randomMachineName();
  $this->createFileField($field_name, 'node', $type_name);
  $test_file = $this->getTestFile('text');
  // Create a new node with the uploaded file and ensure it got uploaded
  // successfully.
  $nid = $this->uploadNodeFile($test_file, $field_name, $type_name);
  $node = $node_storage->loadUnchanged($nid);
  $node_file = File::load($node->{$field_name}->target_id);
  $this->assertFileExists($node_file->getFileUri());
  // Ensure the file can be downloaded.
  $this->drupalGet($node_file->createFileUrl());
  $this->assertSession()
    ->statusCodeEquals(200);
  // Ensure the edit page has a remove button instead of an upload button.
  $this->drupalGet("node/{$nid}/edit");
  $this->assertSession()
    ->buttonNotExists('Upload');
  $this->assertSession()
    ->buttonExists('Remove');
  $this->submitForm([], 'Remove');
  // Ensure the page now has an upload button instead of a remove button.
  $this->assertSession()
    ->buttonNotExists('Remove');
  $this->assertSession()
    ->buttonExists('Upload');
  // Test label has correct 'for' attribute.
  $input = $this->assertSession()
    ->fieldExists("files[{$field_name}_0]");
  $this->assertSession()
    ->elementExists('xpath', '//label[@for="' . $input->getAttribute('id') . '"]');
  // Save the node and ensure it does not have the file.
  $this->submitForm([], 'Save');
  $node = $node_storage->loadUnchanged($nid);
  $this->assertEmpty($node->{$field_name}->target_id, 'File was successfully removed from the node.');
}