UserBackend: Fix interface in test

refs #4593

library/Icinga/Authentication/Backend/DbUserBackend.php

@@ -131,7 +131,6 @@ class DbUserBackend implements UserBackend
         return $this->name;
     }
 
-
     /**
      * Check if the user identified by the given credentials is available
      *
@@ -154,8 +153,6 @@ class DbUserBackend implements UserBackend
      */
     public function authenticate(Credential $credential)
     {
-        $this->assertDbConnection();
-
         try {
             $salt = $this->getUserSalt($credential->getUsername());
         } catch (Exception $e) {
@@ -196,8 +193,6 @@ class DbUserBackend implements UserBackend
      */
     private function getUserSalt($username)
     {
-        $this->assertDbConnection();
-
         $res = $this->db->select()
             ->from($this->userTable, self::SALT_COLUMN)
             ->where(self::USER_NAME_COLUMN.' = ?', $username)
@@ -218,9 +213,6 @@ class DbUserBackend implements UserBackend
      */
     private function getUserByName($username)
     {
-
-        $this->assertDbConnection();
-
         $this->db->getConnection();
         $res = $this->db->
             select()->from($this->userTable)
@@ -249,32 +241,16 @@ class DbUserBackend implements UserBackend
         return $usr;
     }
 
-    /**
-     * Assert a valid database connection
-     *
-     * @throws ConfigurationError
-     */
-    private function assertDbConnection()
-    {
-        if ($this->db === null) {
-            $msg = 'DbUserBackend ' . $this->getName() . ' has no valid database connection.';
-            Logger::fatal($msg);
-            throw new ConfigurationError($msg);
-        }
-    }
-
     /**
      * Return the number of users in this database connection
      *
      * This class is mainly used for determining whether the authentication backend is valid or not
      *
-     * @return int      The number of users set in this backend
-     * @see UserBackend::getUserCount
+     * @return  int The number of users set in this backend
+     * @see     UserBackend::getUserCount
      */
     public function getUserCount()
     {
-
-        $this->db->getConnection();
         $query = $this->db->select()->from($this->userTable, 'COUNT(*) as count')->query();
         return $query->fetch()->count;
     }

library/Icinga/Authentication/Backend/LdapUserBackend.php

@@ -153,6 +153,12 @@ class LdapUserBackend implements UserBackend
         return $user;
     }
 
+    /**
+     * Return number of users in this backend
+     *
+     * @return  int The number of users set in this backend
+     * @see     UserBackend::getUserCount
+     */
     public function getUserCount()
     {
         return $this->connection->count(

test/php/library/Icinga/Authentication/DbUserBackendTest.php

@@ -40,6 +40,7 @@ require_once 'Zend/Config/Ini.php';
 require_once 'Zend/Db/Adapter/Abstract.php';
 require_once 'Zend/Db.php';
 require_once 'Zend/Log.php';
+require_once BaseTestCase::$libDir . '/Exception/ProgrammingError.php';
 require_once BaseTestCase::$libDir . '/Util/ConfigAwareFactory.php';
 require_once BaseTestCase::$libDir . '/Authentication/UserBackend.php';
 require_once BaseTestCase::$libDir . '/Protocol/Ldap/Exception.php';
@@ -172,7 +173,7 @@ class DbUserBackendTest extends BaseTestCase
                     $usr[self::SALT_COLUMN],
                     $usr[self::PASSWORD_COLUMN]
                 ),
-                self::ACTIVE_COLUMN     => $usr[self::ACTIVE_COLUMN],
+                self::ACTIVE_COLUMN => $usr[self::ACTIVE_COLUMN],
                 self::SALT_COLUMN   => $usr[self::SALT_COLUMN]
             );
             $resource->insert($this->testTable, $data);
@@ -284,4 +285,30 @@ class DbUserBackendTest extends BaseTestCase
 
         $this->assertSame($testName, $backend->getName());
     }
+
+    /**
+     * @dataProvider mysqlDb
+     */
+    public function testCountUsersMySql($db)
+    {
+        $this->setupDbProvider($db);
+        $testName = 'test-name-123123';
+        $backend = new DbUserBackend($this->createDbBackendConfig($db, $testName));
+
+        $this->assertGreaterThan(0, $backend->getUserCount());
+    }
+
+    /**
+     * @dataProvider pgsqlDb
+     */
+    public function testCountUsersPgSql($db)
+    {
+        $this->setupDbProvider($db);
+        $testName = 'test-name-123123';
+        $backend = new DbUserBackend($this->createDbBackendConfig($db, $testName));
+
+        $this->assertGreaterThan(0, $backend->getUserCount());
+    }
+
+
 }

test/php/library/Icinga/Authentication/ErrorProneBackendMock.php

@@ -88,4 +88,17 @@ class ErrorProneBackendMock implements UserBackend
     {
         return $this->name;
     }
+
+    /**
+     * Get the number of users available through this backend
+     *
+     * @return int
+     * @throws Exception
+     */
+    public function getUserCount()
+    {
+        throw new Exception('getUserCount error: No users in this error prone backend');
+    }
+
+
 }