Fix Request::hasHeader('Host'). Fixed #2

src/Request.php

@@ -86,6 +86,26 @@ public function getHeader($name)
 		return (array) $this->headers[$name];
 	}
 
+	/**
+	 * Checks if a header exists by the given case-insensitive name.
+	 *
+	 * @param string $name Case-insensitive header field name.
+	 *
+	 * @return bool Returns true if any header names match the given header
+	 *     name using a case-insensitive string comparison. Returns false if
+	 *     no matching header name is found in the message.
+	 */
+	public function hasHeader($name)
+	{
+		if (strtolower($name) === 'host' && ($this->uri && $this->uri->getHost()))
+		{
+			$this->headerNames['host'] = $name;
+			$this->headers[$name] = array($this->getHostFromUri());
+		}
+
+		return parent::hasHeader($name);
+	}
+
 	/**
 	 * Retrieve the host from the URI instance
 	 *

test/RequestTest.php

@@ -77,4 +77,20 @@ public function testGetHeader()
 
 		$this->assertEquals(array('windwalker.io'), $request->getHeader('host'));
 	}
+
+	/**
+	 * Method to test hasHeader().
+	 *
+	 * @return  void
+	 *
+	 * @covers Asika\Http\Request::hasHeader
+	 */
+	public function testHasHeader()
+	{
+		$request = new \Asika\Http\Request('http://example.com/foo', 'GET');
+
+		$this->assertTrue($request->hasHeader('host'));
+		$this->assertTrue($request->hasHeader('Host'));
+		$this->assertFalse($request->hasHeader('X-Foo'));
+	}
 }