public void WhenTooFewParametersAreSupplied_ThrowsIncorrectParameterCountException()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
Assert.Throws <IncorrectParameterCountException>(() => generator.Generate("Not()"));
}
public void GeneratorDoesNotExposeStaticFunctionsWithUnsupportedReturnTypes()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(InvalidFunctions));
Assert.Throws <UnknownFunctionException>(() => generator.Generate("ReturnRegex()"));
}
public void FunctionsNamesAreCaseInsensitive()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
generator.Generate("ONE()");
}
public void GeneratorDoesNotExposeStaticFunctionsWithUnsupportedTypeParameters()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(InvalidFunctions));
Assert.Throws <UnknownFunctionException>(() => generator.Generate("RegexToString(\".*\")"));
}
public void GivenAFunctionWithAnIFormatProviderAsTheLastParameter_WhenPassingAStringAsTheLocale_ThenItConvertsTheString()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var result = (string)generator.Generate("NumberToString(5.3, \"fr-FR\")")(null);
Assert.Equal("5,3", result);
}
public void WhenLastParametersIsAnIFormatProvider_ThenItIsOptional()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var result = (string)generator.Generate("NumberToString(5)")(null);
Assert.Equal("5", result);
}
public void CallingAFunctionWithAnInvalidParameterThrowsAnException()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var ex = Assert.Throws <TypeMismatchException>(() => generator.Generate("AddDay(\"Hello\")"));
Assert.Equal(typeof(DateTime), ex.Expected);
Assert.Equal(typeof(string), ex.Actual);
}
public void GeneratorExposesStaticFunctionsWithNumberParameters()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var func = generator.Generate("Add(5, 7)");
var result = func(null);
Assert.Equal(12m, (decimal)result);
}
public void GeneratorExposesStaticFunctionsWithBooleangParameters()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var func = generator.Generate("Not(\"Foo\" = \"Bar\")");
var result = func(null);
Assert.True((bool)result);
}
public void GeneratorExposesStaticFunctionsWithDateParameters()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var func = generator.Generate("AddDay('2012-12-30')");
var result = func(null);
Assert.Equal(new DateTime(2012, 12, 31), (DateTime)result);
}
public void GeneratorExposesStaticFunctionsWithStringParameters()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var func = generator.Generate("AddMoo(\"Foo\")");
var result = func(null);
Assert.Equal("FooMoo", (string)result);
}
public void GeneratorExposesStaticFunctionsFromSpecifiedTypes()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var func = generator.Generate("One()");
var result = func(null);
Assert.Equal(1m, (decimal)result);
}
public void IfOnlyEvaluatesTheUsedResultParameter()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
var func = generator.Generate("If(1=2, GoBoom(), \"Success\")");
var result = func(null);
Assert.Equal("Success", result);
}
public OutputSpecVisitor(Type[] functionTypes, IEnumerable <string> specialFieldNames)
{
_generator = new ExpressionGenerator();
foreach (var type in functionTypes ?? new Type[0])
{
_generator.AddFunctions(type);
}
_generator.ValidIdentifiers = new HashSet <string>(StringComparer.InvariantCultureIgnoreCase);
if (specialFieldNames != null)
{
_generator.ValidIdentifiers.UnionWith(specialFieldNames);
}
}
public void GivenAFunctionWithAParameterOfDictionaryStringString_WhenAnIncorrectStringIsPassedToTheFunction_ThrowsAKeyNotFoundException()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
generator.Lookups = new Dictionary <string, Dictionary <string, string> >
{
["FooLookup"] = new Dictionary <string, string> {
["Bar"] = "Foo"
}
};
var func = generator.Generate("Lookup(\"NotALookup\", \"Bar\")");
Assert.Throws <KeyNotFoundException>(() => func(null));
}
public void GivenAFunctionWithAParameterOfDictionaryStringString_WhenAStringIsPassedToTheFunction_ReturnsALookupTableFromTheList()
{
var generator = new ExpressionGenerator();
generator.AddFunctions(typeof(MockFormulae));
generator.Lookups = new Dictionary <string, Dictionary <string, string> >
{
["FooLookup"] = new Dictionary <string, string> {
["Bar"] = "Foo"
}
};
var result = (string)generator.Generate("Lookup(\"FooLookup\", \"Bar\")")(null);
Assert.Equal("Foo", result);
}
