- Patch #1182290 by BTMash, chx, matason, catch, mdm, tstoeckler: add boilerplate upgrade path tests.

includes/utility.inc

@@ -46,6 +46,13 @@ function drupal_var_export($var, $prefix = '') {
       $output = "'" . $var . "'";
     }
   }
+  else if (is_object($var) && get_class($var) === 'stdClass') {
+    // var_export() will export stdClass objects using an undefined
+    // magic method __set_state() leaving the export broken. This
+    // workaround avoids this by casting the object as an array for
+    // export and casting it back to an object when evaluated.
+    $output .= '(object) ' . drupal_var_export((array) $var, $prefix);
+  }
   else {
     $output = var_export($var, TRUE);
   }

modules/simpletest/simpletest.info

@@ -37,3 +37,6 @@ files[] = tests/theme.test
 files[] = tests/unicode.test
 files[] = tests/update.test
 files[] = tests/xmlrpc.test
+files[] = tests/upgrade/upgrade.test
+files[] = tests/upgrade/upgrade_bare.test
+files[] = tests/upgrade/upgrade_filled.test

modules/simpletest/tests/upgrade/upgrade.test

@@ -33,6 +33,14 @@ abstract class UpgradePathTestCase extends DrupalWebTestCase {
   protected function setUp() {
     global $user, $language, $conf;
 
+    // We are going to set a missing zlib requirement property for usage during
+    // the performUpgrade() and tearDown() calls. Also set that the tests failed.
+    if (!function_exists('gzopen')) {
+      $this->missing_zlib_requirement = TRUE;
+      parent::setUp();
+      return;
+    }
+
     // Load the Update API.
     require_once DRUPAL_ROOT . '/includes/update.inc';
 
@@ -92,7 +100,11 @@ abstract class UpgradePathTestCase extends DrupalWebTestCase {
     $conf = array();
 
     // Load the database from the portable PHP dump.
+    // The files can be gzipped.
     foreach ($this->databaseDumpFiles as $file) {
+      if (substr($file, -3) == '.gz') {
+        $file = "compress.zlib://$file";
+      }
       require $file;
     }
 
@@ -111,17 +123,12 @@ abstract class UpgradePathTestCase extends DrupalWebTestCase {
     // Generate and set a D6-compatible session cookie.
     $this->curlInitialize();
     $sid = drupal_hash_base64(uniqid(mt_rand(), TRUE) . drupal_random_bytes(55));
-    $session_name = update_get_d6_session_name();
-    curl_setopt($this->curlHandle, CURLOPT_COOKIE, rawurlencode($session_name) . '=' . rawurlencode($sid));
+    curl_setopt($this->curlHandle, CURLOPT_COOKIE, rawurlencode(session_name()) . '=' . rawurlencode($sid));
 
     // Force our way into the session of the child site.
     drupal_save_session(TRUE);
-    // A session cannot be written without the ssid column which is missing on
-    // Drupal 6 sites.
-    db_add_field('sessions', 'ssid', array('description' => "Secure session ID. The value is generated by Drupal's session handlers.", 'type' => 'varchar', 'length' => 128, 'not null' => TRUE, 'default' => ''));
     _drupal_session_write($sid, '');
     // Remove the temporarily added ssid column.
-    db_drop_field('sessions', 'ssid');
     drupal_save_session(FALSE);
 
     // Restore necessary variables.
@@ -137,6 +144,11 @@ abstract class UpgradePathTestCase extends DrupalWebTestCase {
   protected function tearDown() {
     global $user, $language;
 
+    if (!empty($this->missing_zlib_requirement)) {
+      parent::tearDown();
+      return;
+    }
+
     // In case a fatal error occured that was not in the test process read the
     // log to pick up any fatal errors.
     simpletest_log_read($this->testId, $this->databasePrefix, get_class($this), TRUE);
@@ -233,6 +245,11 @@ abstract class UpgradePathTestCase extends DrupalWebTestCase {
   protected function performUpgrade($register_errors = TRUE) {
     $update_url = $GLOBALS['base_url'] . '/update.php';
 
+    if (!empty($this->missing_zlib_requirement)) {
+      $this->fail(t('Missing zlib requirement for upgrade tests.'));
+      return FALSE;
+    }
+
     // Load the first update screen.
     $this->drupalGet($update_url, array('external' => TRUE));
     if (!$this->assertResponse(200)) {