Issue #2122761 by znerol, heddn: SessionHttpsTest only runs half the tests.

core/modules/system/lib/Drupal/system/Tests/Session/SessionHttpsTest.php

@@ -113,11 +113,20 @@ protected function testHttpsSession() {
 
     // Clear browser cookie jar.
     $this->cookies = array();
+  }
 
+  /**
+   * Tests sessions in SSL mixed mode.
+   */
+  protected function testMixedModeSslSession() {
     if ($this->request->isSecure()) {
       // The functionality does not make sense when running on HTTPS.
       return;
     }
+    else {
+      $secure_session_name = 'S' . session_name();
+      $insecure_session_name = session_name();
+    }
 
     // Enable secure pages.
     $this->settingsSet('mixed_mode_sessions', TRUE);
@@ -128,6 +137,8 @@ protected function testHttpsSession() {
     );
     $this->writeSettings($settings);
 
+    $user = $this->drupalCreateUser(array('access administration pages'));
+
     $this->curlClose();
     // Start an anonymous session on the insecure site.
     $session_data = $this->randomName();