public void TestExpressionVariableProvider()
{
var input = new Dictionary <string, string>()
{
{ "A", "B*C" },
{ "B", "C * 10" },
{ "C", "SQRT[4] * 5" }
};
var variableProvider = new ExpressionVariableProvider(input, DefaultFunctionProvider.Instance);
var result = variableProvider.Lookup("A");
Assert.AreEqual(1000, result);
}
public void TestAllDataDrivenTestCases()
{
foreach (var sourceFile in Directory.EnumerateFiles(@".\Data", "*.csv"))
{
using (var sr = new StreamReader(sourceFile))
{
using (var csvReader = new CsvReader(sr))
{
var assertions = new List <Tuple <string, double> >();
var expressions = new Dictionary <string, string>();
var dependencyMap = new Dictionary <string, HashSet <string> >();
foreach (var expressionEntry in csvReader.GetRecords <DataDrivenTestCase>())
{
expressions.Add(expressionEntry.Name, expressionEntry.Expression);
assertions.Add(new Tuple <string, double>(expressionEntry.Name, expressionEntry.Expected));
dependencyMap.Add(expressionEntry.Name, CsWrapper.ExtractExpressionDependencies(CsWrapper.ParseFormula(expressionEntry.Expression)));
}
var variableProvider = new ExpressionVariableProvider(expressions, DefaultFunctionProvider.Instance);
foreach (var assertion in assertions)
{
foreach (var dependency in dependencyMap[assertion.Item1])
{
Assert.IsTrue(dependencyMap.ContainsKey(dependency), $"Missing dependency {assertion.Item1}->{dependency}");
}
Assert.AreEqual(assertion.Item2, variableProvider.Lookup(assertion.Item1));
Assert.AreEqual(assertion.Item2, CsWrapper.InterpretFormula(expressions[assertion.Item1], variableProvider));
}
Console.WriteLine($"Validated {assertions.Count} entries from {sourceFile}");
}
}
}
}