public void GetTwoBlocks()
{
Loader loader = new Loader(new StringReader("line 1\r\nline 2\r\n!\r\nline 3\r\nline 4\r\n!\r\n"), new SimpleCompiler());
Assert.IsNotNull(loader);
Assert.AreEqual("line 1\r\nline 2\r\n", loader.GetBlockText());
Assert.AreEqual("line 3\r\nline 4\r\n", loader.GetBlockText());
Assert.IsNull(loader.GetBlockText());
}