function ShutdownFunctionTest::testShutdownFunctionInShutdownFunction

Tests that shutdown functions can be added by other shutdown functions.

File

core/tests/Drupal/KernelTests/Core/Bootstrap/ShutdownFunctionTest.php, line 33

Class

ShutdownFunctionTest

Tests.

Namespace

Code

public function testShutdownFunctionInShutdownFunction() : void {
  // Ensure there are no shutdown functions registered before starting the
  // test.
  $this->assertEmpty(drupal_register_shutdown_function());
  // Register a shutdown function that, when called, will register another
  // shutdown function.
  drupal_register_shutdown_function([
    $this,
    'shutdownOne',
  ]);
  $this->assertCount(1, drupal_register_shutdown_function());
  // Simulate the Drupal shutdown.
  _drupal_shutdown_function();
  // Test that the expected functions are called.
  $this->assertTrue($this->shutDownOneCalled);
  $this->assertTrue($this->shutDownTwoCalled);
  $this->assertCount(2, drupal_register_shutdown_function());
}