cms/drupal/modules/simpletest/tests/bootstrap.test
changeset 541 e756a8c72c3d
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cms/drupal/modules/simpletest/tests/bootstrap.test	Fri Sep 08 12:04:06 2017 +0200
@@ -0,0 +1,878 @@
+<?php
+
+class BootstrapIPAddressTestCase extends DrupalWebTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'IP address and HTTP_HOST test',
+      'description' => 'Get the IP address from the current visitor from the server variables, check hostname validation.',
+      'group' => 'Bootstrap'
+    );
+  }
+
+  function setUp() {
+    $this->oldserver = $_SERVER;
+
+    $this->remote_ip = '127.0.0.1';
+    $this->proxy_ip = '127.0.0.2';
+    $this->proxy2_ip = '127.0.0.3';
+    $this->forwarded_ip = '127.0.0.4';
+    $this->cluster_ip = '127.0.0.5';
+    $this->untrusted_ip = '0.0.0.0';
+
+    drupal_static_reset('ip_address');
+
+    $_SERVER['REMOTE_ADDR'] = $this->remote_ip;
+    unset($_SERVER['HTTP_X_FORWARDED_FOR']);
+    unset($_SERVER['HTTP_X_CLUSTER_CLIENT_IP']);
+
+    parent::setUp();
+  }
+
+  function tearDown() {
+    $_SERVER = $this->oldserver;
+    drupal_static_reset('ip_address');
+    parent::tearDown();
+  }
+
+  /**
+   * test IP Address and hostname
+   */
+  function testIPAddressHost() {
+    // Test the normal IP address.
+    $this->assertTrue(
+      ip_address() == $this->remote_ip,
+      'Got remote IP address.'
+    );
+
+    // Proxy forwarding on but no proxy addresses defined.
+    variable_set('reverse_proxy', 1);
+    $this->assertTrue(
+      ip_address() == $this->remote_ip,
+      'Proxy forwarding without trusted proxies got remote IP address.'
+    );
+
+    // Proxy forwarding on and proxy address not trusted.
+    variable_set('reverse_proxy_addresses', array($this->proxy_ip, $this->proxy2_ip));
+    drupal_static_reset('ip_address');
+    $_SERVER['REMOTE_ADDR'] = $this->untrusted_ip;
+    $this->assertTrue(
+      ip_address() == $this->untrusted_ip,
+      'Proxy forwarding with untrusted proxy got remote IP address.'
+    );
+
+    // Proxy forwarding on and proxy address trusted.
+    $_SERVER['REMOTE_ADDR'] = $this->proxy_ip;
+    $_SERVER['HTTP_X_FORWARDED_FOR'] = $this->forwarded_ip;
+    drupal_static_reset('ip_address');
+    $this->assertTrue(
+      ip_address() == $this->forwarded_ip,
+      'Proxy forwarding with trusted proxy got forwarded IP address.'
+    );
+
+    // Proxy forwarding on and proxy address trusted and visiting from proxy.
+    $_SERVER['REMOTE_ADDR'] = $this->proxy_ip;
+    $_SERVER['HTTP_X_FORWARDED_FOR'] = $this->proxy_ip;
+    drupal_static_reset('ip_address');
+    $this->assertTrue(
+      ip_address() == $this->proxy_ip,
+      'Visiting from trusted proxy got proxy IP address.'
+    );
+
+    // Multi-tier architecture with comma separated values in header.
+    $_SERVER['REMOTE_ADDR'] = $this->proxy_ip;
+    $_SERVER['HTTP_X_FORWARDED_FOR'] = implode(', ', array($this->untrusted_ip, $this->forwarded_ip, $this->proxy2_ip));
+    drupal_static_reset('ip_address');
+    $this->assertTrue(
+      ip_address() == $this->forwarded_ip,
+      'Proxy forwarding with trusted 2-tier proxy got forwarded IP address.'
+    );
+
+    // Custom client-IP header.
+    variable_set('reverse_proxy_header', 'HTTP_X_CLUSTER_CLIENT_IP');
+    $_SERVER['HTTP_X_CLUSTER_CLIENT_IP'] = $this->cluster_ip;
+    drupal_static_reset('ip_address');
+    $this->assertTrue(
+      ip_address() == $this->cluster_ip,
+      'Cluster environment got cluster client IP.'
+    );
+
+    // Verifies that drupal_valid_http_host() prevents invalid characters.
+    $this->assertFalse(drupal_valid_http_host('security/.drupal.org:80'), 'HTTP_HOST with / is invalid');
+    $this->assertFalse(drupal_valid_http_host('security\\.drupal.org:80'), 'HTTP_HOST with \\ is invalid');
+    $this->assertFalse(drupal_valid_http_host('security<.drupal.org:80'), 'HTTP_HOST with &lt; is invalid');
+    $this->assertFalse(drupal_valid_http_host('security..drupal.org:80'), 'HTTP_HOST with .. is invalid');
+    // Verifies that host names are shorter than 1000 characters.
+    $this->assertFalse(drupal_valid_http_host(str_repeat('x', 1001)), 'HTTP_HOST with more than 1000 characters is invalid.');
+    $this->assertFalse(drupal_valid_http_host(str_repeat('.', 101)), 'HTTP_HOST with more than 100 subdomains is invalid.');
+    $this->assertFalse(drupal_valid_http_host(str_repeat(':', 101)), 'HTTP_HOST with more than 100 portseparators is invalid.');
+
+    // IPv6 loopback address
+    $this->assertTrue(drupal_valid_http_host('[::1]:80'), 'HTTP_HOST containing IPv6 loopback is valid');
+  }
+}
+
+class BootstrapPageCacheTestCase extends DrupalWebTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Page cache test',
+      'description' => 'Enable the page cache and test it with various HTTP requests.',
+      'group' => 'Bootstrap'
+    );
+  }
+
+  function setUp() {
+    parent::setUp('system_test');
+  }
+
+  /**
+   * Test support for requests containing If-Modified-Since and If-None-Match headers.
+   */
+  function testConditionalRequests() {
+    variable_set('cache', 1);
+
+    // Fill the cache.
+    $this->drupalGet('');
+
+    $this->drupalHead('');
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
+    $etag = $this->drupalGetHeader('ETag');
+    $last_modified = $this->drupalGetHeader('Last-Modified');
+
+    $this->drupalGet('', array(), array('If-Modified-Since: ' . $last_modified, 'If-None-Match: ' . $etag));
+    $this->assertResponse(304, 'Conditional request returned 304 Not Modified.');
+
+    $this->drupalGet('', array(), array('If-Modified-Since: ' . gmdate(DATE_RFC822, strtotime($last_modified)), 'If-None-Match: ' . $etag));
+    $this->assertResponse(304, 'Conditional request with obsolete If-Modified-Since date returned 304 Not Modified.');
+
+    $this->drupalGet('', array(), array('If-Modified-Since: ' . gmdate(DATE_RFC850, strtotime($last_modified)), 'If-None-Match: ' . $etag));
+    $this->assertResponse(304, 'Conditional request with obsolete If-Modified-Since date returned 304 Not Modified.');
+
+    $this->drupalGet('', array(), array('If-Modified-Since: ' . $last_modified));
+    $this->assertResponse(200, 'Conditional request without If-None-Match returned 200 OK.');
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
+
+    $this->drupalGet('', array(), array('If-Modified-Since: ' . gmdate(DATE_RFC7231, strtotime($last_modified) + 1), 'If-None-Match: ' . $etag));
+    $this->assertResponse(200, 'Conditional request with new a If-Modified-Since date newer than Last-Modified returned 200 OK.');
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
+
+    $user = $this->drupalCreateUser();
+    $this->drupalLogin($user);
+    $this->drupalGet('', array(), array('If-Modified-Since: ' . $last_modified, 'If-None-Match: ' . $etag));
+    $this->assertResponse(200, 'Conditional request returned 200 OK for authenticated user.');
+    $this->assertFalse($this->drupalGetHeader('X-Drupal-Cache'), 'Absence of Page was not cached.');
+    $this->assertFalse($this->drupalGetHeader('ETag'), 'ETag HTTP headers are not present for logged in users.');
+    $this->assertFalse($this->drupalGetHeader('Last-Modified'), 'Last-Modified HTTP headers are not present for logged in users.');
+  }
+
+  /**
+   * Test cache headers.
+   */
+  function testPageCache() {
+    variable_set('cache', 1);
+
+    // Fill the cache.
+    $this->drupalGet('system-test/set-header', array('query' => array('name' => 'Foo', 'value' => 'bar')));
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'MISS', 'Page was not cached.');
+    $this->assertEqual($this->drupalGetHeader('Vary'), 'Cookie,Accept-Encoding', 'Vary header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'public, max-age=0', 'Cache-Control header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Expires'), 'Sun, 19 Nov 1978 05:00:00 GMT', 'Expires header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Foo'), 'bar', 'Custom header was sent.');
+
+    // Check cache.
+    $this->drupalGet('system-test/set-header', array('query' => array('name' => 'Foo', 'value' => 'bar')));
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
+    $this->assertEqual($this->drupalGetHeader('Vary'), 'Cookie,Accept-Encoding', 'Vary: Cookie header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'public, max-age=0', 'Cache-Control header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Expires'), 'Sun, 19 Nov 1978 05:00:00 GMT', 'Expires header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Foo'), 'bar', 'Custom header was sent.');
+
+    // Check replacing default headers.
+    $this->drupalGet('system-test/set-header', array('query' => array('name' => 'Expires', 'value' => 'Fri, 19 Nov 2008 05:00:00 GMT')));
+    $this->assertEqual($this->drupalGetHeader('Expires'), 'Fri, 19 Nov 2008 05:00:00 GMT', 'Default header was replaced.');
+    $this->drupalGet('system-test/set-header', array('query' => array('name' => 'Vary', 'value' => 'User-Agent')));
+    $this->assertEqual($this->drupalGetHeader('Vary'), 'User-Agent,Accept-Encoding', 'Default header was replaced.');
+
+    // Check that authenticated users bypass the cache.
+    $user = $this->drupalCreateUser();
+    $this->drupalLogin($user);
+    $this->drupalGet('system-test/set-header', array('query' => array('name' => 'Foo', 'value' => 'bar')));
+    $this->assertFalse($this->drupalGetHeader('X-Drupal-Cache'), 'Caching was bypassed.');
+    $this->assertTrue(strpos($this->drupalGetHeader('Vary'), 'Cookie') === FALSE, 'Vary: Cookie header was not sent.');
+    $this->assertEqual($this->drupalGetHeader('Cache-Control'), 'no-cache, must-revalidate', 'Cache-Control header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Expires'), 'Sun, 19 Nov 1978 05:00:00 GMT', 'Expires header was sent.');
+    $this->assertEqual($this->drupalGetHeader('Foo'), 'bar', 'Custom header was sent.');
+
+  }
+
+  /**
+   * Test page compression.
+   *
+   * The test should pass even if zlib.output_compression is enabled in php.ini,
+   * .htaccess or similar, or if compression is done outside PHP, e.g. by the
+   * mod_deflate Apache module.
+   */
+  function testPageCompression() {
+    variable_set('cache', 1);
+
+    // Fill the cache and verify that output is compressed.
+    $this->drupalGet('', array(), array('Accept-Encoding: gzip,deflate'));
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'MISS', 'Page was not cached.');
+    $this->drupalSetContent(gzinflate(substr($this->drupalGetContent(), 10, -8)));
+    $this->assertRaw('</html>', 'Page was gzip compressed.');
+
+    // Verify that cached output is compressed.
+    $this->drupalGet('', array(), array('Accept-Encoding: gzip,deflate'));
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
+    $this->assertEqual($this->drupalGetHeader('Content-Encoding'), 'gzip', 'A Content-Encoding header was sent.');
+    $this->drupalSetContent(gzinflate(substr($this->drupalGetContent(), 10, -8)));
+    $this->assertRaw('</html>', 'Page was gzip compressed.');
+
+    // Verify that a client without compression support gets an uncompressed page.
+    $this->drupalGet('');
+    $this->assertEqual($this->drupalGetHeader('X-Drupal-Cache'), 'HIT', 'Page was cached.');
+    $this->assertFalse($this->drupalGetHeader('Content-Encoding'), 'A Content-Encoding header was not sent.');
+    $this->assertTitle(t('Welcome to @site-name | @site-name', array('@site-name' => variable_get('site_name', 'Drupal'))), 'Site title matches.');
+    $this->assertRaw('</html>', 'Page was not compressed.');
+
+    // Disable compression mode.
+    variable_set('page_compression', FALSE);
+
+    // Verify if cached page is still available for a client with compression support.
+    $this->drupalGet('', array(), array('Accept-Encoding: gzip,deflate'));
+    $this->drupalSetContent(gzinflate(substr($this->drupalGetContent(), 10, -8)));
+    $this->assertRaw('</html>', 'Page was delivered after compression mode is changed (compression support enabled).');
+
+    // Verify if cached page is still available for a client without compression support.
+    $this->drupalGet('');
+    $this->assertRaw('</html>', 'Page was delivered after compression mode is changed (compression support disabled).');
+  }
+}
+
+class BootstrapVariableTestCase extends DrupalWebTestCase {
+
+  function setUp() {
+    parent::setUp('system_test');
+  }
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Variable test',
+      'description' => 'Make sure the variable system functions correctly.',
+      'group' => 'Bootstrap'
+    );
+  }
+
+  /**
+   * testVariable
+   */
+  function testVariable() {
+    // Setting and retrieving values.
+    $variable = $this->randomName();
+    variable_set('simpletest_bootstrap_variable_test', $variable);
+    $this->assertIdentical($variable, variable_get('simpletest_bootstrap_variable_test'), 'Setting and retrieving values');
+
+    // Make sure the variable persists across multiple requests.
+    $this->drupalGet('system-test/variable-get');
+    $this->assertText($variable, 'Variable persists across multiple requests');
+
+    // Deleting variables.
+    $default_value = $this->randomName();
+    variable_del('simpletest_bootstrap_variable_test');
+    $variable = variable_get('simpletest_bootstrap_variable_test', $default_value);
+    $this->assertIdentical($variable, $default_value, 'Deleting variables');
+  }
+
+  /**
+   * Makes sure that the default variable parameter is passed through okay.
+   */
+  function testVariableDefaults() {
+    // Tests passing nothing through to the default.
+    $this->assertIdentical(NULL, variable_get('simpletest_bootstrap_variable_test'), 'Variables are correctly defaulting to NULL.');
+
+    // Tests passing 5 to the default parameter.
+    $this->assertIdentical(5, variable_get('simpletest_bootstrap_variable_test', 5), 'The default variable parameter is passed through correctly.');
+  }
+
+}
+
+/**
+ * Tests the auto-loading behavior of the code registry.
+ */
+class BootstrapAutoloadTestCase extends DrupalWebTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Code registry',
+      'description' => 'Test that the code registry functions correctly.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  function setUp() {
+    parent::setUp('drupal_autoload_test');
+  }
+
+  /**
+   * Tests that autoloader name matching is not case sensitive.
+   */
+  function testAutoloadCase() {
+    // Test interface autoloader.
+    $this->assertTrue(drupal_autoload_interface('drupalautoloadtestinterface'), 'drupal_autoload_interface() recognizes <em>DrupalAutoloadTestInterface</em> in lower case.');
+    // Test class autoloader.
+    $this->assertTrue(drupal_autoload_class('drupalautoloadtestclass'), 'drupal_autoload_class() recognizes <em>DrupalAutoloadTestClass</em> in lower case.');
+    // Test trait autoloader.
+    if (version_compare(PHP_VERSION, '5.4') >= 0) {
+      $this->assertTrue(drupal_autoload_trait('drupalautoloadtesttrait'), 'drupal_autoload_trait() recognizes <em>DrupalAutoloadTestTrait</em> in lower case.');
+    }
+  }
+
+}
+
+/**
+ * Test hook_boot() and hook_exit().
+ */
+class HookBootExitTestCase extends DrupalWebTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Boot and exit hook invocation',
+      'description' => 'Test that hook_boot() and hook_exit() are called correctly.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  function setUp() {
+    parent::setUp('system_test', 'dblog');
+  }
+
+  /**
+   * Test calling of hook_boot() and hook_exit().
+   */
+  function testHookBootExit() {
+    // Test with cache disabled. Boot and exit should always fire.
+    variable_set('cache', 0);
+    $this->drupalGet('');
+    $calls = 1;
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_boot'))->fetchField(), $calls, t('hook_boot called with disabled cache.'));
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_exit'))->fetchField(), $calls, t('hook_exit called with disabled cache.'));
+
+    // Test with normal cache. Boot and exit should be called.
+    variable_set('cache', 1);
+    $this->drupalGet('');
+    $calls++;
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_boot'))->fetchField(), $calls, t('hook_boot called with normal cache.'));
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_exit'))->fetchField(), $calls, t('hook_exit called with normal cache.'));
+
+    // Boot and exit should not fire since the page is cached.
+    variable_set('page_cache_invoke_hooks', FALSE);
+    $this->assertTrue(cache_get(url('', array('absolute' => TRUE)), 'cache_page'), t('Page has been cached.'));
+    $this->drupalGet('');
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_boot'))->fetchField(), $calls, t('hook_boot not called with aggressive cache and a cached page.'));
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_exit'))->fetchField(), $calls, t('hook_exit not called with aggressive cache and a cached page.'));
+
+    // Test with page cache cleared, boot and exit should be called.
+    $this->assertTrue(db_delete('cache_page')->execute(), t('Page cache cleared.'));
+    $this->drupalGet('');
+    $calls++;
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_boot'))->fetchField(), $calls, t('hook_boot called with aggressive cache and no cached page.'));
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND message = :message', array(':type' => 'system_test', ':message' => 'hook_exit'))->fetchField(), $calls, t('hook_exit called with aggressive cache and no cached page.'));
+  }
+}
+
+/**
+ * Test drupal_get_filename()'s availability.
+ */
+class BootstrapGetFilenameTestCase extends DrupalUnitTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Get filename test (without the system table)',
+      'description' => 'Test that drupal_get_filename() works correctly when the database is not available.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  /**
+   * The last file-related error message triggered by the filename test.
+   *
+   * Used by BootstrapGetFilenameTestCase::testDrupalGetFilename().
+   */
+  protected $getFilenameTestTriggeredError;
+
+  /**
+   * Test that drupal_get_filename() works correctly when the file is not found in the database.
+   */
+  function testDrupalGetFilename() {
+    // Reset the static cache so we can test the "db is not active" code of
+    // drupal_get_filename().
+    drupal_static_reset('drupal_get_filename');
+
+    // Retrieving the location of a module.
+    $this->assertIdentical(drupal_get_filename('module', 'php'), 'modules/php/php.module', t('Retrieve module location.'));
+
+    // Retrieving the location of a theme.
+    $this->assertIdentical(drupal_get_filename('theme', 'stark'), 'themes/stark/stark.info', t('Retrieve theme location.'));
+
+    // Retrieving the location of a theme engine.
+    $this->assertIdentical(drupal_get_filename('theme_engine', 'phptemplate'), 'themes/engines/phptemplate/phptemplate.engine', t('Retrieve theme engine location.'));
+
+    // Retrieving the location of a profile. Profiles are a special case with
+    // a fixed location and naming.
+    $this->assertIdentical(drupal_get_filename('profile', 'standard'), 'profiles/standard/standard.profile', t('Retrieve install profile location.'));
+
+    // When a file is not found in the database cache, drupal_get_filename()
+    // searches several locations on the filesystem, including the DRUPAL_ROOT
+    // directory. We use the '.script' extension below because this is a
+    // non-existent filetype that will definitely not exist in the database.
+    // Since there is already a scripts directory, drupal_get_filename() will
+    // automatically check there for 'script' files, just as it does for (e.g.)
+    // 'module' files in modules.
+    $this->assertIdentical(drupal_get_filename('script', 'test'), 'scripts/test.script', t('Retrieve test script location.'));
+
+    // When searching for a module that does not exist, drupal_get_filename()
+    // should return NULL and trigger an appropriate error message.
+    $this->getFilenameTestTriggeredError = NULL;
+    set_error_handler(array($this, 'fileNotFoundErrorHandler'));
+    $non_existing_module = $this->randomName();
+    $this->assertNull(drupal_get_filename('module', $non_existing_module), 'Searching for a module that does not exist returns NULL.');
+    $this->assertTrue(strpos($this->getFilenameTestTriggeredError, format_string('The following module is missing from the file system: %name', array('%name' => $non_existing_module))) === 0, 'Searching for an item that does not exist triggers the correct error.');
+    restore_error_handler();
+
+    // Check that the result is stored in the file system scan cache.
+    $file_scans = _drupal_file_scan_cache();
+    $this->assertIdentical($file_scans['module'][$non_existing_module], FALSE, 'Searching for a module that does not exist creates a record in the missing and moved files static variable.');
+
+    // Performing the search again in the same request still should not find
+    // the file, but the error message should not be repeated (therefore we do
+    // not override the error handler here).
+    $this->assertNull(drupal_get_filename('module', $non_existing_module), 'Searching for a module that does not exist returns NULL during the second search.');
+  }
+
+  /**
+   * Skips handling of "file not found" errors.
+   */
+  public function fileNotFoundErrorHandler($error_level, $message, $filename, $line, $context) {
+    // Skip error handling if this is a "file not found" error.
+    if (strpos($message, 'is missing from the file system:') !== FALSE || strpos($message, 'has moved within the file system:') !== FALSE) {
+      $this->getFilenameTestTriggeredError = $message;
+      return;
+    }
+    _drupal_error_handler($error_level, $message, $filename, $line, $context);
+  }
+}
+
+/**
+ * Test drupal_get_filename() in the context of a full Drupal installation.
+ */
+class BootstrapGetFilenameWebTestCase extends DrupalWebTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Get filename test (full installation)',
+      'description' => 'Test that drupal_get_filename() works correctly in the context of a full Drupal installation.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  function setUp() {
+    parent::setUp('system_test');
+  }
+
+  /**
+   * The last file-related error message triggered by the filename test.
+   *
+   * Used by BootstrapGetFilenameWebTestCase::testDrupalGetFilename().
+   */
+  protected $getFilenameTestTriggeredError;
+
+  /**
+   * Test that drupal_get_filename() works correctly with a full Drupal site.
+   */
+  function testDrupalGetFilename() {
+    // Search for a module that exists in the file system and the {system}
+    // table and make sure that it is found.
+    $this->assertIdentical(drupal_get_filename('module', 'node'), 'modules/node/node.module', 'Module found at expected location.');
+
+    // Search for a module that does not exist in either the file system or the
+    // {system} table. Make sure that an appropriate error is triggered and
+    // that the module winds up in the static and persistent cache.
+    $this->getFilenameTestTriggeredError = NULL;
+    set_error_handler(array($this, 'fileNotFoundErrorHandler'));
+    $non_existing_module = $this->randomName();
+    $this->assertNull(drupal_get_filename('module', $non_existing_module), 'Searching for a module that does not exist returns NULL.');
+    $this->assertTrue(strpos($this->getFilenameTestTriggeredError, format_string('The following module is missing from the file system: %name', array('%name' => $non_existing_module))) === 0, 'Searching for a module that does not exist triggers the correct error.');
+    restore_error_handler();
+    $file_scans = _drupal_file_scan_cache();
+    $this->assertIdentical($file_scans['module'][$non_existing_module], FALSE, 'Searching for a module that does not exist creates a record in the missing and moved files static variable.');
+    drupal_file_scan_write_cache();
+    $cache = cache_get('_drupal_file_scan_cache', 'cache_bootstrap');
+    $this->assertIdentical($cache->data['module'][$non_existing_module], FALSE, 'Searching for a module that does not exist creates a record in the missing and moved files persistent cache.');
+
+    // Simulate moving a module to a location that does not match the location
+    // in the {system} table and perform similar tests as above.
+    db_update('system')
+      ->fields(array('filename' => 'modules/simpletest/tests/fake_location/module_test.module'))
+      ->condition('name', 'module_test')
+      ->condition('type', 'module')
+      ->execute();
+    $this->getFilenameTestTriggeredError = NULL;
+    set_error_handler(array($this, 'fileNotFoundErrorHandler'));
+    $this->assertIdentical(drupal_get_filename('module', 'module_test'), 'modules/simpletest/tests/module_test.module', 'Searching for a module that has moved finds the module at its new location.');
+    $this->assertTrue(strpos($this->getFilenameTestTriggeredError, format_string('The following module has moved within the file system: %name', array('%name' => 'module_test'))) === 0, 'Searching for a module that has moved triggers the correct error.');
+    restore_error_handler();
+    $file_scans = _drupal_file_scan_cache();
+    $this->assertIdentical($file_scans['module']['module_test'], 'modules/simpletest/tests/module_test.module', 'Searching for a module that has moved creates a record in the missing and moved files static variable.');
+    drupal_file_scan_write_cache();
+    $cache = cache_get('_drupal_file_scan_cache', 'cache_bootstrap');
+    $this->assertIdentical($cache->data['module']['module_test'], 'modules/simpletest/tests/module_test.module', 'Searching for a module that has moved creates a record in the missing and moved files persistent cache.');
+
+    // Simulate a module that exists in the {system} table but does not exist
+    // in the file system and perform similar tests as above.
+    $non_existing_module = $this->randomName();
+    db_update('system')
+      ->fields(array('name' => $non_existing_module))
+      ->condition('name', 'module_test')
+      ->condition('type', 'module')
+      ->execute();
+    $this->getFilenameTestTriggeredError = NULL;
+    set_error_handler(array($this, 'fileNotFoundErrorHandler'));
+    $this->assertNull(drupal_get_filename('module', $non_existing_module), 'Searching for a module that exists in the system table but not in the file system returns NULL.');
+    $this->assertTrue(strpos($this->getFilenameTestTriggeredError, format_string('The following module is missing from the file system: %name', array('%name' => $non_existing_module))) === 0, 'Searching for a module that exists in the system table but not in the file system triggers the correct error.');
+    restore_error_handler();
+    $file_scans = _drupal_file_scan_cache();
+    $this->assertIdentical($file_scans['module'][$non_existing_module], FALSE, 'Searching for a module that exists in the system table but not in the file system creates a record in the missing and moved files static variable.');
+    drupal_file_scan_write_cache();
+    $cache = cache_get('_drupal_file_scan_cache', 'cache_bootstrap');
+    $this->assertIdentical($cache->data['module'][$non_existing_module], FALSE, 'Searching for a module that exists in the system table but not in the file system creates a record in the missing and moved files persistent cache.');
+
+    // Simulate a module that exists in the file system but not in the {system}
+    // table and perform similar tests as above.
+    db_delete('system')
+      ->condition('name', 'common_test')
+      ->condition('type', 'module')
+      ->execute();
+    system_list_reset();
+    $this->getFilenameTestTriggeredError = NULL;
+    set_error_handler(array($this, 'fileNotFoundErrorHandler'));
+    $this->assertIdentical(drupal_get_filename('module', 'common_test'), 'modules/simpletest/tests/common_test.module', 'Searching for a module that does not exist in the system table finds the module at its actual location.');
+    $this->assertTrue(strpos($this->getFilenameTestTriggeredError, format_string('The following module has moved within the file system: %name', array('%name' => 'common_test'))) === 0, 'Searching for a module that does not exist in the system table triggers the correct error.');
+    restore_error_handler();
+    $file_scans = _drupal_file_scan_cache();
+    $this->assertIdentical($file_scans['module']['common_test'], 'modules/simpletest/tests/common_test.module', 'Searching for a module that does not exist in the system table creates a record in the missing and moved files static variable.');
+    drupal_file_scan_write_cache();
+    $cache = cache_get('_drupal_file_scan_cache', 'cache_bootstrap');
+    $this->assertIdentical($cache->data['module']['common_test'], 'modules/simpletest/tests/common_test.module', 'Searching for a module that does not exist in the system table creates a record in the missing and moved files persistent cache.');
+  }
+
+  /**
+   * Skips handling of "file not found" errors.
+   */
+  public function fileNotFoundErrorHandler($error_level, $message, $filename, $line, $context) {
+    // Skip error handling if this is a "file not found" error.
+    if (strpos($message, 'is missing from the file system:') !== FALSE || strpos($message, 'has moved within the file system:') !== FALSE) {
+      $this->getFilenameTestTriggeredError = $message;
+      return;
+    }
+    _drupal_error_handler($error_level, $message, $filename, $line, $context);
+  }
+
+  /**
+   * Test that watchdog messages about missing files are correctly recorded.
+   */
+  public function testWatchdog() {
+    // Search for a module that does not exist in either the file system or the
+    // {system} table. Make sure that an appropriate warning is recorded in the
+    // logs.
+    $non_existing_module = $this->randomName();
+    $query_parameters = array(
+      ':type' => 'php',
+      ':severity' => WATCHDOG_WARNING,
+    );
+    $this->assertEqual(db_query('SELECT COUNT(*) FROM {watchdog} WHERE type = :type AND severity = :severity', $query_parameters)->fetchField(), 0, 'No warning message appears in the logs before searching for a module that does not exist.');
+    // Trigger the drupal_get_filename() call. This must be done via a request
+    // to a separate URL since the watchdog() will happen in a shutdown
+    // function, and so that SimpleTest can be told to ignore (and not fail as
+    // a result of) the expected PHP warnings generated during this process.
+    variable_set('system_test_drupal_get_filename_test_module_name', $non_existing_module);
+    $this->drupalGet('system-test/drupal-get-filename');
+    $message_variables = db_query('SELECT variables FROM {watchdog} WHERE type = :type AND severity = :severity', $query_parameters)->fetchCol();
+    $this->assertEqual(count($message_variables), 1, 'A single warning message appears in the logs after searching for a module that does not exist.');
+    $variables = reset($message_variables);
+    $variables = unserialize($variables);
+    $this->assertTrue(isset($variables['!message']) && strpos($variables['!message'], format_string('The following module is missing from the file system: %name', array('%name' => $non_existing_module))) !== FALSE, 'The warning message that appears in the logs after searching for a module that does not exist contains the expected text.');
+  }
+
+  /**
+   * Test that drupal_get_filename() does not break recursive rebuilds.
+   */
+  public function testRecursiveRebuilds() {
+    // Ensure that the drupal_get_filename() call due to a missing module does
+    // not break the data returned by an attempted recursive rebuild. The code
+    // path which is tested is as follows:
+    // - Call drupal_get_schema().
+    // - Within a hook_schema() implementation, trigger a drupal_get_filename()
+    //   search for a nonexistent module.
+    // - In the watchdog() call that results from that, trigger
+    //   drupal_get_schema() again.
+    // Without some kind of recursion protection, this could cause the second
+    // drupal_get_schema() call to return incomplete results. This test ensures
+    // that does not happen.
+    $non_existing_module = $this->randomName();
+    variable_set('system_test_drupal_get_filename_test_module_name', $non_existing_module);
+    $this->drupalGet('system-test/drupal-get-filename-with-schema-rebuild');
+    $original_drupal_get_schema_tables = variable_get('system_test_drupal_get_filename_with_schema_rebuild_original_tables');
+    $final_drupal_get_schema_tables = variable_get('system_test_drupal_get_filename_with_schema_rebuild_final_tables');
+    $this->assertTrue(!empty($original_drupal_get_schema_tables));
+    $this->assertTrue(!empty($final_drupal_get_schema_tables));
+    $this->assertEqual($original_drupal_get_schema_tables, $final_drupal_get_schema_tables);
+  }
+}
+
+class BootstrapTimerTestCase extends DrupalUnitTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Timer test',
+      'description' => 'Test that timer_read() works both when a timer is running and when a timer is stopped.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  /**
+   * Test timer_read() to ensure it properly accumulates time when the timer
+   * started and stopped multiple times.
+   * @return
+   */
+  function testTimer() {
+    timer_start('test');
+    sleep(1);
+    $this->assertTrue(timer_read('test') >= 1000, 'Timer measured 1 second of sleeping while running.');
+    sleep(1);
+    timer_stop('test');
+    $this->assertTrue(timer_read('test') >= 2000, 'Timer measured 2 seconds of sleeping after being stopped.');
+    timer_start('test');
+    sleep(1);
+    $this->assertTrue(timer_read('test') >= 3000, 'Timer measured 3 seconds of sleeping after being restarted.');
+    sleep(1);
+    $timer = timer_stop('test');
+    $this->assertTrue(timer_read('test') >= 4000, 'Timer measured 4 seconds of sleeping after being stopped for a second time.');
+    $this->assertEqual($timer['count'], 2, 'Timer counted 2 instances of being started.');
+  }
+}
+
+/**
+ * Test that resetting static variables works.
+ */
+class BootstrapResettableStaticTestCase extends DrupalUnitTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Resettable static variables test',
+      'description' => 'Test that drupal_static() and drupal_static_reset() work.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  /**
+   * Test that a variable reference returned by drupal_static() gets reset when
+   * drupal_static_reset() is called.
+   */
+  function testDrupalStatic() {
+    $name = __CLASS__ . '_' . __METHOD__;
+    $var = &drupal_static($name, 'foo');
+    $this->assertEqual($var, 'foo', 'Variable returned by drupal_static() was set to its default.');
+
+    // Call the specific reset and the global reset each twice to ensure that
+    // multiple resets can be issued without odd side effects.
+    $var = 'bar';
+    drupal_static_reset($name);
+    $this->assertEqual($var, 'foo', 'Variable was reset after first invocation of name-specific reset.');
+    $var = 'bar';
+    drupal_static_reset($name);
+    $this->assertEqual($var, 'foo', 'Variable was reset after second invocation of name-specific reset.');
+    $var = 'bar';
+    drupal_static_reset();
+    $this->assertEqual($var, 'foo', 'Variable was reset after first invocation of global reset.');
+    $var = 'bar';
+    drupal_static_reset();
+    $this->assertEqual($var, 'foo', 'Variable was reset after second invocation of global reset.');
+  }
+}
+
+/**
+ * Test miscellaneous functions in bootstrap.inc.
+ */
+class BootstrapMiscTestCase extends DrupalUnitTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Miscellaneous bootstrap unit tests',
+      'description' => 'Test miscellaneous functions in bootstrap.inc.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  /**
+   * Test miscellaneous functions in bootstrap.inc.
+   */
+  function testMisc() {
+    // Test drupal_array_merge_deep().
+    $link_options_1 = array('fragment' => 'x', 'attributes' => array('title' => 'X', 'class' => array('a', 'b')), 'language' => 'en');
+    $link_options_2 = array('fragment' => 'y', 'attributes' => array('title' => 'Y', 'class' => array('c', 'd')), 'html' => TRUE);
+    $expected = array('fragment' => 'y', 'attributes' => array('title' => 'Y', 'class' => array('a', 'b', 'c', 'd')), 'language' => 'en', 'html' => TRUE);
+    $this->assertIdentical(drupal_array_merge_deep($link_options_1, $link_options_2), $expected, 'drupal_array_merge_deep() returned a properly merged array.');
+  }
+
+  /**
+   * Tests that the drupal_check_memory_limit() function works as expected.
+   */
+  function testCheckMemoryLimit() {
+    $memory_limit = ini_get('memory_limit');
+    // Test that a very reasonable amount of memory is available.
+    $this->assertTrue(drupal_check_memory_limit('30MB'), '30MB of memory tested available.');
+
+    // Get the available memory and multiply it by two to make it unreasonably
+    // high.
+    $twice_avail_memory = ($memory_limit * 2) . 'MB';
+
+    // The function should always return true if the memory limit is set to -1.
+    $this->assertTrue(drupal_check_memory_limit($twice_avail_memory, -1), 'drupal_check_memory_limit() returns TRUE when a limit of -1 (none) is supplied');
+
+    // Test that even though we have 30MB of memory available - the function
+    // returns FALSE when given an upper limit for how much memory can be used.
+    $this->assertFalse(drupal_check_memory_limit('30MB', '16MB'), 'drupal_check_memory_limit() returns FALSE with a 16MB upper limit on a 30MB requirement.');
+
+    // Test that an equal amount of memory to the amount requested returns TRUE.
+    $this->assertTrue(drupal_check_memory_limit('30MB', '30MB'), 'drupal_check_memory_limit() returns TRUE when requesting 30MB on a 30MB requirement.');
+  }
+}
+
+/**
+ * Tests for overriding server variables via the API.
+ */
+class BootstrapOverrideServerVariablesTestCase extends DrupalUnitTestCase {
+  public static function getInfo() {
+    return array(
+      'name' => 'Overriding server variables',
+      'description' => 'Test that drupal_override_server_variables() works correctly.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  /**
+   * Test providing a direct URL to to drupal_override_server_variables().
+   */
+  function testDrupalOverrideServerVariablesProvidedURL() {
+    $tests = array(
+      'http://example.com' => array(
+        'HTTP_HOST' => 'example.com',
+        'SCRIPT_NAME' => isset($_SERVER['SCRIPT_NAME']) ? $_SERVER['SCRIPT_NAME'] : NULL,
+      ),
+      'http://example.com/index.php' => array(
+        'HTTP_HOST' => 'example.com',
+        'SCRIPT_NAME' => '/index.php',
+      ),
+      'http://example.com/subdirectory/index.php' => array(
+        'HTTP_HOST' => 'example.com',
+        'SCRIPT_NAME' => '/subdirectory/index.php',
+      ),
+    );
+    foreach ($tests as $url => $expected_server_values) {
+      // Remember the original value of $_SERVER, since the function call below
+      // will modify it.
+      $original_server = $_SERVER;
+      // Call drupal_override_server_variables() and ensure that all expected
+      // $_SERVER variables were modified correctly.
+      drupal_override_server_variables(array('url' => $url));
+      foreach ($expected_server_values as $key => $value) {
+        $this->assertIdentical($_SERVER[$key], $value);
+      }
+      // Restore the original value of $_SERVER.
+      $_SERVER = $original_server;
+    }
+  }
+}
+
+/**
+ * Tests for $_GET['destination'] and $_REQUEST['destination'] validation.
+ */
+class BootstrapDestinationTestCase extends DrupalWebTestCase {
+
+  public static function getInfo() {
+    return array(
+      'name' => 'URL destination validation',
+      'description' => 'Test that $_GET[\'destination\'] and $_REQUEST[\'destination\'] cannot contain external URLs.',
+      'group' => 'Bootstrap',
+    );
+  }
+
+  function setUp() {
+    parent::setUp('system_test');
+  }
+
+  /**
+   * Tests that $_GET/$_REQUEST['destination'] only contain internal URLs.
+   *
+   * @see _drupal_bootstrap_variables()
+   * @see system_test_get_destination()
+   * @see system_test_request_destination()
+   */
+  public function testDestination() {
+    $test_cases = array(
+      array(
+        'input' => 'node',
+        'output' => 'node',
+        'message' => "Standard internal example node path is present in the 'destination' parameter.",
+      ),
+      array(
+        'input' => '/example.com',
+        'output' => '/example.com',
+        'message' => 'Internal path with one leading slash is allowed.',
+      ),
+      array(
+        'input' => '//example.com/test',
+        'output' => '',
+        'message' => 'External URL without scheme is not allowed.',
+      ),
+      array(
+        'input' => 'example:test',
+        'output' => 'example:test',
+        'message' => 'Internal URL using a colon is allowed.',
+      ),
+      array(
+        'input' => 'http://example.com',
+        'output' => '',
+        'message' => 'External URL is not allowed.',
+      ),
+      array(
+        'input' => 'javascript:alert(0)',
+        'output' => 'javascript:alert(0)',
+        'message' => 'Javascript URL is allowed because it is treated as an internal URL.',
+      ),
+    );
+    foreach ($test_cases as $test_case) {
+      // Test $_GET['destination'].
+      $this->drupalGet('system-test/get-destination', array('query' => array('destination' => $test_case['input'])));
+      $this->assertIdentical($test_case['output'], $this->drupalGetContent(), $test_case['message']);
+      // Test $_REQUEST['destination']. There's no form to submit to, so
+      // drupalPost() won't work here; this just tests a direct $_POST request
+      // instead.
+      $curl_parameters = array(
+        CURLOPT_URL => $this->getAbsoluteUrl('system-test/request-destination'),
+        CURLOPT_POST => TRUE,
+        CURLOPT_POSTFIELDS => 'destination=' . urlencode($test_case['input']),
+        CURLOPT_HTTPHEADER => array(),
+      );
+      $post_output = $this->curlExec($curl_parameters);
+      $this->assertIdentical($test_case['output'], $post_output, $test_case['message']);
+    }
+
+    // Make sure that 404 pages do not populate $_GET['destination'] with
+    // external URLs.
+    variable_set('site_404', 'system-test/get-destination');
+    $this->drupalGet('http://example.com', array('external' => FALSE));
+    $this->assertIdentical('', $this->drupalGetContent(), 'External URL is not allowed on 404 pages.');
+  }
+}