public void BuildTree_EmptyExpression_ReturnsEmptyExpressionTree() { List <Token> tokens = new List <Token>(); EndOfTokenStreamException exception = Assert.Throws <EndOfTokenStreamException>( () => builder.BuildTree(new Tokens(tokens)) ); Assert.AreEqual("Unexpected end of token stream", exception.Message); }
public void BuildTree_IllegalEndOfStream_ThrowsException() { List <Token> tokens = new List <Token> { new Token(TokenType.LeftParentheses), new Token(TokenType.Number, "1"), }; EndOfTokenStreamException exception = Assert.Throws <EndOfTokenStreamException>( () => builder.BuildTree(new Tokens(tokens)) ); Assert.AreEqual("Unexpected end of token stream", exception.Message); }