public function testVarAlteration()
{
$field = 'HTTP_MY_HEADER';
$originalValue = 'my value';
list($_server, $_get, $_post, $_files, $_cookie, $_input) = $this->getRequiredServerVars();
$_server[$field] = $originalValue;
$request = new Request($_server, $_get, $_post, $_files, $_cookie, $_input);
$this->assertTrue($request->has($field));
$this->assertSame($originalValue, $request[$field]);
$this->assertSame($originalValue, $request->get($field));
$request[$field] = 'altered';
$this->assertSame('altered', $request->get($field));
$this->assertSame('altered', $request[$field]);
$request->set($field, 'another change');
$this->assertSame('another change', $request[$field]);
}
