public void TestBatchLoad()
{
// Test that we can add expressions in any order
CalculationEngine engine = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
int interest = 2;
context.Variables.Add("interest", interest);
BatchLoader loader = engine.CreateBatchLoader();
loader.Add("c", "a + b", context);
loader.Add("a", "100 + interest", context);
loader.Add("b", "a + 1 + a", context);
// Test an expression with a reference in a string
loader.Add("d", "\"str \\\" str\" + a + \"b\"", context);
engine.BatchLoad(loader);
int result = engine.GetResult<int>("b");
Assert.AreEqual((100 + interest) + 1 + (100 + interest), result);
interest = 300;
context.Variables["interest"] = interest;
engine.Recalculate("a");
result = engine.GetResult<int>("b");
Assert.AreEqual((100 + interest) + 1 + (100 + interest), result);
result = engine.GetResult<int>("c");
Assert.AreEqual((100 + interest) + 1 + (100 + interest) + (100 + interest), result);
Assert.AreEqual("str \" str400b", engine.GetResult<string>("d"));
}
public void TestBasic()
{
CalculationEngine ce = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;
variables.Add("x", 100);
ce.Add("a", "x * 2", context);
variables.Add("y", 1);
ce.Add("b", "a + y", context);
ce.Add("c", "b * 2", context);
ce.Recalculate("a");
int result = ce.GetResult<int>("c");
Assert.AreEqual(result, ((100 * 2) + 1) * 2);
variables["x"] = 345;
ce.Recalculate("a");
result = ce.GetResult<int>("c");
Assert.AreEqual(((345 * 2) + 1) * 2, result);
}
public void TestCircularReference1()
{
CalculationEngine ce = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;
variables.Add("x", 100);
ce.Add("a", "x * 2", context);
variables.Add("y", 1);
ce.Add("b", "a + y + b", context);
ce.Recalculate("a");
}
public void TestWithReferenceTypes()
{
CalculationEngine ce = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;
variables.Add("x", "string");
ce.Add("a", "x + \" \"", context);
variables.Add("y", "word");
ce.Add("b", "y", context);
ce.Add("c", "a + b", context);
ce.Recalculate("b", "a");
string result = ce.GetResult<string>("c");
Assert.AreEqual("string" + " " + "word", result);
}
public void TestRemove3()
{
CalculationEngine ce = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;
ce.Add("a", "100", context);
ce.Add("b", "200", context);
ce.Add("c", "a + b", context);
ce.Add("d", "300 + c", context);
ce.Add("e", "c + d", context);
ce.Remove("d");
Assert.AreEqual(3, ce.Count);
ce.Recalculate("c");
ce.Remove("c");
Assert.AreEqual(2, ce.Count);
ce.Remove("a");
Assert.AreEqual(1, ce.Count);
ce.Remove("b");
Assert.AreEqual(0, ce.Count);
}
public void TestRecalculateNonSource()
{
// Test recalculate with a non-source
CalculationEngine ce = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;
variables.Add("x", 100);
ce.Add("a", "x * 2", context);
variables.Add("y", 1);
ce.Add("b", "a + y", context);
ce.Add("c", "b * 2", context);
ce.Recalculate("a", "b");
int result = ce.GetResult<int>("c");
Assert.AreEqual(((100) * 2 + 1) * 2, result);
}
public void TestMutipleIdenticalReferences()
{
CalculationEngine ce = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;
variables.Add("x", 100);
ce.Add("a", "x * 2", context);
ce.Add("b", "a + a + a", context);
ce.Recalculate("a");
int result = ce.GetResult<int>("b");
Assert.AreEqual((100 * 2) * 3, result);
}
public void TestComplex()
{
CalculationEngine ce = new CalculationEngine();
ExpressionContext context = new ExpressionContext();
VariableCollection variables = context.Variables;
variables.Add("x", 100);
ce.Add("a", "x * 2", context);
variables.Add("y", 24);
ce.Add("b", "y * 2", context);
ce.Add("c", "a + b", context);
ce.Add("d", "80", context);
ce.Add("e", "a + b + c + d", context);
ce.Recalculate("d");
ce.Recalculate(new string[] {
"a",
"b"
});
int result = ce.GetResult<int>("e");
Assert.AreEqual((100 * 2) + (24 * 2) + ((100 * 2) + (24 * 2)) + 80, result);
}
