public void BeginKleene_WhenGivenAToken_PushesOptionNode()
{
// Arrange:
var token = new Token {
TokenKind = TokenKind.LeftBrace, Image = "{"
};
var stack = new Stack <IAstNode>();
var builder = new AstBuilder(_nodeFactoryMock.Object, null, stack, _tracerMock.Object);
// Act:
builder.BeginKleene(token);
// Assert:
Assert.That(stack.Count, Is.EqualTo(1));
Assert.That(stack.Peek(), Is.InstanceOf(typeof(IKleeneStarNode)));
Assert.That((stack.Peek() as IKleeneStarNode)?.Expression, Is.Null);
}
