function ErrorHandlerTest::testErrorHandler
Tests the error handler.
File
- 
              core/modules/ system/ tests/ src/ Functional/ System/ ErrorHandlerTest.php, line 30 
Class
- ErrorHandlerTest
- Performs tests on the Drupal error and exception handler.
Namespace
Drupal\Tests\system\Functional\SystemCode
public function testErrorHandler() {
  $config = $this->config('system.logging');
  $error_notice = [
    '%type' => 'Notice',
    '@message' => 'Object of class stdClass could not be converted to int',
    '%function' => 'Drupal\\error_test\\Controller\\ErrorTestController->generateWarnings()',
    '%file' => $this->getModulePath('error_test') . '/error_test.module',
  ];
  $error_warning = [
    '%type' => 'Warning',
    '@message' => 'var_export does not handle circular references',
    '%function' => 'Drupal\\error_test\\Controller\\ErrorTestController->generateWarnings()',
    '%file' => $this->getModulePath('error_test') . '/error_test.module',
  ];
  $error_user_notice = [
    '%type' => 'User warning',
    '@message' => 'Drupal & awesome',
    '%function' => 'Drupal\\error_test\\Controller\\ErrorTestController->generateWarnings()',
    '%file' => $this->getModulePath('error_test') . '/error_test.module',
  ];
  // Set error reporting to display verbose notices.
  $this->config('system.logging')
    ->set('error_level', ERROR_REPORTING_DISPLAY_VERBOSE)
    ->save();
  $this->drupalGet('error-test/generate-warnings');
  $this->assertSession()
    ->statusCodeEquals(200);
  $this->assertErrorMessage($error_notice);
  $this->assertErrorMessage($error_warning);
  $this->assertErrorMessage($error_user_notice);
  $this->assertSession()
    ->responseContains('<pre class="backtrace">');
  // Ensure we are escaping but not double escaping.
  $this->assertSession()
    ->responseContains('&');
  $this->assertSession()
    ->responseNotContains('&amp;');
  // Set error reporting to display verbose notices.
  $this->config('system.logging')
    ->set('error_level', ERROR_REPORTING_DISPLAY_VERBOSE)
    ->save();
  // Set error reporting to collect notices.
  $config->set('error_level', ERROR_REPORTING_DISPLAY_ALL)
    ->save();
  $this->drupalGet('error-test/generate-warnings');
  $this->assertSession()
    ->statusCodeEquals(200);
  $this->assertErrorMessage($error_notice);
  $this->assertErrorMessage($error_warning);
  $this->assertErrorMessage($error_user_notice);
  $this->assertSession()
    ->responseNotContains('<pre class="backtrace">');
  // Set error reporting to not collect notices.
  $config->set('error_level', ERROR_REPORTING_DISPLAY_SOME)
    ->save();
  $this->drupalGet('error-test/generate-warnings');
  $this->assertSession()
    ->statusCodeEquals(200);
  $this->assertNoErrorMessage($error_notice);
  $this->assertErrorMessage($error_warning);
  $this->assertErrorMessage($error_user_notice);
  $this->assertSession()
    ->responseNotContains('<pre class="backtrace">');
  // Set error reporting to not show any errors.
  $config->set('error_level', ERROR_REPORTING_HIDE)
    ->save();
  $this->drupalGet('error-test/generate-warnings');
  $this->assertSession()
    ->statusCodeEquals(200);
  $this->assertNoErrorMessage($error_notice);
  $this->assertNoErrorMessage($error_warning);
  $this->assertNoErrorMessage($error_user_notice);
  $this->assertNoMessages();
  $this->assertSession()
    ->responseNotContains('<pre class="backtrace">');
}Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.
