test import against auth plugin which doesn't allow adding users

lib/plugins/usermanager/_test/csv_import.test.php

@@ -47,7 +47,7 @@ class plugin_usermanager_csv_import_test extends DokuWikiTest {
         global $auth;
         $before_users = $auth->retrieveUsers();
 
-         io_savefile($this->importfile, $importCsv);
+        io_savefile($this->importfile, $importCsv);
         $result = $this->usermanager->tryImport();
 
         $after_users = $auth->retrieveUsers();
@@ -66,6 +66,22 @@ class plugin_usermanager_csv_import_test extends DokuWikiTest {
         $this->assertEquals($expectedFailures, $this->usermanager->getImportFailures());     // failures as expected
     }
 
+    function test_cantImport(){
+        global $auth;
+        $oldauth = $auth;
+
+        $auth = new auth_mock_authplain();
+        $auth->setCanDo('addUser', false);
+
+        $csv = 'User,"Real Name",Email,Groups
+importuser,"Ford Prefect",ford@example.com,user
+';
+
+        $this->doImportTest($csv, false, array(), array());
+
+        $auth = $oldauth;
+    }
+
     function test_import() {
         $csv = 'User,"Real Name",Email,Groups
 importuser,"Ford Prefect",ford@example.com,user

lib/plugins/usermanager/_test/mocks.class.php

@@ -41,3 +41,10 @@ class admin_mock_usermanager extends admin_plugin_usermanager {
     }
 }
 
+class auth_mock_authplain extends auth_plugin_authplain {
+
+    public function setCanDo($op, $canDo) {
+        $this->cando[$op] = $canDo;
+    }
+
+}