public function NullBackendTest::testNullBackend in Drupal 9

Same name and namespace in other branches

1. 8 core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php \Drupal\Tests\Core\Cache\NullBackendTest::testNullBackend()

Tests that the NullBackend does not actually store variables.

File

core/tests/Drupal/Tests/Core/Cache/NullBackendTest.php, line 18

Class

NullBackendTest

Tests the cache NullBackend.

Namespace

Drupal\Tests\Core\Cache

Code

public function testNullBackend() {
  $null_cache = new NullBackend('test');
  $key = $this
    ->randomMachineName();
  $value = $this
    ->randomMachineName();
  $null_cache
    ->set($key, $value);
  $this
    ->assertFalse($null_cache
    ->get($key));
}