--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/modules/simpletest/tests/error.test	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,116 @@
+<?php
+
+/**
+ * Tests Drupal error and exception handlers.
+ */
+class DrupalErrorHandlerTestCase extends DrupalWebTestCase {
+  public static function getInfo() {
+    return array(
+      'name' => 'Drupal error handlers',
+      'description' => 'Performs tests on the Drupal error and exception handler.',
+      'group' => 'System',
+    );
+  }
+
+  function setUp() {
+    parent::setUp('error_test');
+  }
+
+  /**
+   * Test the error handler.
+   */
+  function testErrorHandler() {
+    $error_notice = array(
+      '%type' => 'Notice',
+      '!message' => 'Undefined variable: bananas',
+      '%function' => 'error_test_generate_warnings()',
+      '%file' => drupal_realpath('modules/simpletest/tests/error_test.module'),
+    );
+    $error_warning = array(
+      '%type' => 'Warning',
+      '!message' => 'Division by zero',
+      '%function' => 'error_test_generate_warnings()',
+      '%file' => drupal_realpath('modules/simpletest/tests/error_test.module'),
+    );
+    $error_user_notice = array(
+      '%type' => 'User warning',
+      '!message' => 'Drupal is awesome',
+      '%function' => 'error_test_generate_warnings()',
+      '%file' => drupal_realpath('modules/simpletest/tests/error_test.module'),
+    );
+
+    // Set error reporting to collect notices.
+    variable_set('error_level', ERROR_REPORTING_DISPLAY_ALL);
+    $this->drupalGet('error-test/generate-warnings');
+    $this->assertResponse(200, 'Received expected HTTP status code.');
+    $this->assertErrorMessage($error_notice);
+    $this->assertErrorMessage($error_warning);
+    $this->assertErrorMessage($error_user_notice);
+
+    // Set error reporting to not collect notices.
+    variable_set('error_level', ERROR_REPORTING_DISPLAY_SOME);
+    $this->drupalGet('error-test/generate-warnings');
+    $this->assertResponse(200, 'Received expected HTTP status code.');
+    $this->assertNoErrorMessage($error_notice);
+    $this->assertErrorMessage($error_warning);
+    $this->assertErrorMessage($error_user_notice);
+
+    // Set error reporting to not show any errors.
+    variable_set('error_level', ERROR_REPORTING_HIDE);
+    $this->drupalGet('error-test/generate-warnings');
+    $this->assertResponse(200, 'Received expected HTTP status code.');
+    $this->assertNoErrorMessage($error_notice);
+    $this->assertNoErrorMessage($error_warning);
+    $this->assertNoErrorMessage($error_user_notice);
+  }
+
+  /**
+   * Test the exception handler.
+   */
+  function testExceptionHandler() {
+    $error_exception = array(
+      '%type' => 'Exception',
+      '!message' => 'Drupal is awesome',
+      '%function' => 'error_test_trigger_exception()',
+      '%line' => 57,
+      '%file' => drupal_realpath('modules/simpletest/tests/error_test.module'),
+    );
+    $error_pdo_exception = array(
+      '%type' => 'PDOException',
+      '!message' => 'SELECT * FROM bananas_are_awesome',
+      '%function' => 'error_test_trigger_pdo_exception()',
+      '%line' => 65,
+      '%file' => drupal_realpath('modules/simpletest/tests/error_test.module'),
+    );
+
+    $this->drupalGet('error-test/trigger-exception');
+    $this->assertTrue(strpos($this->drupalGetHeader(':status'), '500 Service unavailable (with message)'), 'Received expected HTTP status line.');
+    $this->assertErrorMessage($error_exception);
+
+    $this->drupalGet('error-test/trigger-pdo-exception');
+    $this->assertTrue(strpos($this->drupalGetHeader(':status'), '500 Service unavailable (with message)'), 'Received expected HTTP status line.');
+    // We cannot use assertErrorMessage() since the extact error reported
+    // varies from database to database. Check that the SQL string is displayed.
+    $this->assertText($error_pdo_exception['%type'], format_string('Found %type in error page.', $error_pdo_exception));
+    $this->assertText($error_pdo_exception['!message'], format_string('Found !message in error page.', $error_pdo_exception));
+    $error_details = format_string('in %function (line ', $error_pdo_exception);
+    $this->assertRaw($error_details, format_string("Found '!message' in error page.", array('!message' => $error_details)));
+  }
+
+  /**
+   * Helper function: assert that the error message is found.
+   */
+  function assertErrorMessage(array $error) {
+    $message = t('%type: !message in %function (line ', $error);
+    $this->assertRaw($message, format_string('Found error message: !message.', array('!message' => $message)));
+  }
+
+  /**
+   * Helper function: assert that the error message is not found.
+   */
+  function assertNoErrorMessage(array $error) {
+    $message = t('%type: !message in %function (line ', $error);
+    $this->assertNoRaw($message, format_string('Did not find error message: !message.', array('!message' => $message)));
+  }
+}
+