public void TestSrqtExpressions(string expression, double expectedResult)
{
Setup(expression);
CalcParser.ExpressionContext context = this._calcParser.expression();
CalcVisitor visitor = new CalcVisitor();
Argument result = visitor.Visit(context);
Assert.AreEqual(expectedResult, result.ToDouble());
}
public TroubleshootTests(ITestOutputHelper testoutputHelper)
{
this.logger = testoutputHelper;
this.writer = s =>
{
Trace.WriteLine(s);
logger.WriteLine(s.ToString());
};
this.visitor = new CalcVisitor(writer);
}
public void TestIntegerComplexExpressions(string expression, int expectedResult)
{
Setup(expression);
CalcParser.ExpressionContext context = this._calcParser.expression();
CalcVisitor visitor = new CalcVisitor();
Argument result = visitor.Visit(context);
Assert.True(result.IsInteger);
Assert.AreEqual(expectedResult, result.ToInteger());
}
public Value CalculateFormula(string formula)
{
AntlrInputStream input = new AntlrInputStream(formula); //2. parse is to AntlrIS
calculatorLexer lexer = new calculatorLexer(input); //3. lexer created from AntlrIS
CommonTokenStream tokens = new CommonTokenStream(lexer); //4. want to save tokens from the lexer
calculatorParser parser = new calculatorParser(tokens); //5. feed these tokens from lexer when creating the parser
IParseTree tree = parser.block(); //6. run parser using parser.prog() and save output in IParseTree
//Console.WriteLine(tree.ToStringTree(parser)); //7.
CalcVisitor visitor = new CalcVisitor(); //8. CalcVisitor will do the evaluations
Value ret = visitor.Visit(tree.GetChild(0));
//Console.WriteLine(ret); //z. CalcVisitor performs the actual evaluations + then write output
return(ret);
}
public void TestDateExpressionsWithDateResult(string expression, string expectedResult)
{
Setup(expression);
CalcParser.ExpressionContext context = this._calcParser.expression();
CalcVisitor visitor = new CalcVisitor();
Argument result = visitor.Visit(context);
Assert.True(result.IsDate);
Assert.False(result.IsInteger);
Assert.False(result.IsDouble);
Assert.IsNotNull(result.ToDate());
Assert.AreEqual(expectedResult, result.ToDate().Value.ToString("yyyy-MM-dd"));
}
