public void TestParseErrorInsideDefinition()
{
var tokenizer = new PositionalTokenizer(Tokenizer.CreateTokenizer("function func() { j = }"));
tokenizer.Match("function");
var expr = UserFunctionDefinitionExpression.Parse(tokenizer);
Assert.That(expr, Is.InstanceOf <ParseErrorExpression>());
Assert.That(((ParseErrorExpression)expr).Message, Is.EqualTo("Unexpected end of script"));
}
public void TestParseErrorInsideDefinitionExpressionTokenizer()
{
var group = new ExpressionGroup();
var tokenizer = new ExpressionTokenizer(Tokenizer.CreateTokenizer("function func() { j = }"), group);
tokenizer.Match("function");
var expr = UserFunctionDefinitionExpression.Parse(tokenizer);
Assert.That(expr, Is.InstanceOf <FunctionDefinitionExpression>());
Assert.That(group.ParseErrors.Count(), Is.EqualTo(2));
Assert.That(group.ParseErrors.First().Message, Is.EqualTo("Unexpected character: }"));
}
private FunctionDefinitionExpression Parse(string input, string expectedError = null)
{
var tokenizer = new PositionalTokenizer(Tokenizer.CreateTokenizer(input));
tokenizer.Match("function");
var expr = UserFunctionDefinitionExpression.Parse(tokenizer);
if (expectedError != null)
{
Assert.That(expr, Is.InstanceOf <ParseErrorExpression>());
var error = (ParseErrorExpression)expr;
var formattedErrorMessage = string.Format("{0}:{1} {2}", error.Location.Start.Line, error.Location.Start.Column, error.Message);
Assert.That(formattedErrorMessage, Is.EqualTo(expectedError));
return(null);
}
else
{
Assert.That(expr, Is.InstanceOf <FunctionDefinitionExpression>());
return((FunctionDefinitionExpression)expr);
}
}
