diff --git a/core/modules/system/system.test b/core/modules/system/system.test
index 12797ed..197f205 100644
--- a/core/modules/system/system.test
+++ b/core/modules/system/system.test
@@ -168,6 +168,13 @@ class EnableDisableTestCase extends ModuleTestCase {
     // dependencies). We'll keep track of them in an array, so we can handle
     // them separately.
     $automatically_enabled = array();
+    // Add modules being installed by the installation profile to the initial
+    // list of automatically enabled modules, if they can be disabled.
+    foreach (module_list() as $install_profile_module) {
+      if (isset($modules[$install_profile_module])) {
+        $automatically_enabled[$install_profile_module] = TRUE;
+      }
+    }
 
     // Go through each module in the list and try to enable it (unless it was
     // already enabled automatically due to a dependency).
diff --git a/profiles/testing/testing.info b/profiles/testing/testing.info
index 8e353ed..abedcf9 100644
--- a/profiles/testing/testing.info
+++ b/profiles/testing/testing.info
@@ -3,3 +3,4 @@ description = Minimal profile for running tests. Includes absolutely required mo
 version = VERSION
 core = 8.x
 hidden = TRUE
+dependencies[] = node
diff --git a/profiles/testing/testing.install b/profiles/testing/testing.install
index 19092d4..192704d 100644
--- a/profiles/testing/testing.install
+++ b/profiles/testing/testing.install
@@ -8,4 +8,8 @@
 function testing_install() {
   // Allow visitor account creation, but with administrative approval.
   variable_set('user_register', USER_REGISTER_VISITORS_ADMINISTRATIVE_APPROVAL);
+
+  // Enable default permissions for system roles.
+  user_role_grant_permissions(DRUPAL_ANONYMOUS_RID, array('access content'));
+  user_role_grant_permissions(DRUPAL_AUTHENTICATED_RID, array('access content'));
 }