Updated ldap so extension not required in testing

@@ -34,6 +34,17 @@ class Ldap
     }
 
     /**
+     * Set the version number for the given ldap connection.
+     * @param $ldapConnection
+     * @param $version
+     * @return bool
+     */
+    public function setVersion($ldapConnection, $version)
+    {
+        return $this->setOption($ldapConnection, LDAP_OPT_PROTOCOL_VERSION, $version);
+    }
+
+    /**
      * Search LDAP tree using the provided filter.
      * @param resource   $ldapConnection
      * @param string     $baseDn

@@ -122,7 +122,7 @@ class LdapService
 
         // Set any required options
         if ($this->config['version']) {
-            $this->ldap->setOption($ldapConnection, LDAP_OPT_PROTOCOL_VERSION, $this->config['version']);
+            $this->ldap->setVersion($ldapConnection, $this->config['version']);
         }
 
         $this->ldapConnection = $ldapConnection;

@@ -22,7 +22,7 @@ class LdapTest extends \TestCase
     public function test_login()
     {
         $this->mockLdap->shouldReceive('connect')->once()->andReturn($this->resourceId);
-        $this->mockLdap->shouldReceive('setOption')->once();
+        $this->mockLdap->shouldReceive('setVersion')->once();
         $this->mockLdap->shouldReceive('searchAndGetEntries')->times(4)
             ->with($this->resourceId, config('services.ldap.base_dn'), Mockery::type('string'), Mockery::type('array'))
             ->andReturn(['count' => 1, 0 => [
@@ -49,7 +49,7 @@ class LdapTest extends \TestCase
     public function test_login_works_when_no_uid_provided_by_ldap_server()
     {
         $this->mockLdap->shouldReceive('connect')->once()->andReturn($this->resourceId);
-        $this->mockLdap->shouldReceive('setOption')->once();
+        $this->mockLdap->shouldReceive('setVersion')->once();
         $ldapDn = 'cn=test-user,dc=test' . config('services.ldap.base_dn');
         $this->mockLdap->shouldReceive('searchAndGetEntries')->times(2)
             ->with($this->resourceId, config('services.ldap.base_dn'), Mockery::type('string'), Mockery::type('array'))
@@ -73,7 +73,7 @@ class LdapTest extends \TestCase
     public function test_initial_incorrect_details()
     {
         $this->mockLdap->shouldReceive('connect')->once()->andReturn($this->resourceId);
-        $this->mockLdap->shouldReceive('setOption')->once();
+        $this->mockLdap->shouldReceive('setVersion')->once();
         $this->mockLdap->shouldReceive('searchAndGetEntries')->times(2)
             ->with($this->resourceId, config('services.ldap.base_dn'), Mockery::type('string'), Mockery::type('array'))
             ->andReturn(['count' => 1, 0 => [