Add some unit tests for Server API

Author: clue

tests/ServerApiTest.php

@@ -0,0 +1,89 @@
+<?php
+
+use Socks\Server;
+
+class ServerApiTest extends TestCase
+{
+    /** @var Server */
+    private $server;
+    
+    public function setUp()
+    {
+        $socket = $this->getMockBuilder('React\Socket\Server')
+            ->disableOriginalConstructor()
+            ->getMock();
+        
+        $loop = $this->getMockBuilder('React\EventLoop\StreamSelectLoop')
+            ->disableOriginalConstructor()
+            ->getMock();
+        
+        $connector = $this->getMockBuilder('React\SocketClient\Connector')
+            ->disableOriginalConstructor()
+            ->getMock();
+        
+        $this->server = new Server($socket, $loop, $connector);
+    }
+    
+    public function testSetProtocolVersion()
+    {
+        $this->server->setProtocolVersion(4);
+        $this->server->setProtocolVersion('4a');
+        $this->server->setProtocolVersion(5);
+        $this->server->setProtocolVersion(null);
+    }
+    
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testSetInvalidProtocolVersion()
+    {
+        $this->server->setProtocolVersion(6);
+    }
+    
+    public function testSetAuthArray()
+    {
+        $this->server->setAuthArray(array());
+        
+        $this->server->setAuthArray(array(
+            'name1' => 'password1',
+            'name2' => 'password2'
+        ));
+    }
+    
+    /**
+     * @expectedException InvalidArgumentException
+     */
+    public function testSetAuthInvalid()
+    {
+        $this->server->setAuth(true);
+    }
+    
+    /**
+     * @expectedException UnexpectedValueException
+     */
+    public function testUnableToSetAuthIfProtocolDoesNotSupportAuth()
+    {
+        $this->server->setProtocolVersion(4);
+        
+        $this->server->setAuthArray(array());
+    }
+    
+    /**
+     * @expectedException UnexpectedValueException
+     */
+    public function testUnableToSetProtocolWhichDoesNotSupportAuth()
+    {
+        $this->server->setAuthArray(array());
+        
+        // this is okay
+        $this->server->setProtocolVersion(5);
+        
+        $this->server->setProtocolVersion(4);
+    }
+    
+    public function testUnsetAuth()
+    {
+        $this->server->unsetAuth();
+        $this->server->unsetAuth();
+    }
+}