protected function TestBase::assertNull

Check to see if a value is NULL.

Parameters

$value: The value on which the assertion is to be done.

$message: (optional) A message to display with the assertion. Do not translate messages: use format_string() to embed variables in the message text, not t(). If left blank, a default message will be displayed.

$group: (optional) The group this message is in, which is displayed in a column in test output. Use 'Debug' to indicate this is debugging output. Do not translate this string. Defaults to 'Other'; most tests do not override this default.

Return value

TRUE if the assertion succeeded, FALSE otherwise.

19 calls to TestBase::assertNull()
CacheDecoratorTest::testClearCachedDefinitions in drupal/core/modules/system/lib/Drupal/system/Tests/Plugin/CacheDecoratorTest.php
Tests CacheDecorator::clearCachedDefinitions().
ConfigFileContentTest::testReadWriteConfig in drupal/core/modules/config/lib/Drupal/config/Tests/ConfigFileContentTest.php
Tests setting, writing, and reading of a configuration setting.
EmptyStatementTest::testEmpty in drupal/core/modules/system/lib/Drupal/system/Tests/Database/EmptyStatementTest.php
Tests that the empty result set behaves as empty.
EntityFieldTest::testReadWrite in drupal/core/modules/system/lib/Drupal/system/Tests/Entity/EntityFieldTest.php
Tests reading and writing properties and field items.
EntityTranslationTest::testEntityLanguageMethods in drupal/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationTest.php
Tests language related methods of the Entity class.

... See full list

File

drupal/core/modules/simpletest/lib/Drupal/simpletest/TestBase.php, line 385
Definition of Drupal\simpletest\TestBase.

Class

TestBase
Base class for Drupal tests.

Namespace

Drupal\simpletest

Code

protected function assertNull($value, $message = '', $group = 'Other') {
  return $this
    ->assert(!isset($value), $message ? $message : t('Value @value is NULL.', array(
    '@value' => var_export($value, TRUE),
  )), $group);
}