static void Main(string[] args)
{
// Or we can make an object to hold variable values
// See the definition of FakeSpreadsheet below
FakeSpreadsheet sheet = new FakeSpreadsheet();
// This fake spreadsheet has values for three variables, A1, A2, and a4
sheet.SetCell("A1", 12);
sheet.SetCell("A2", 100);
sheet.SetCell("a4", 3);
// Valid tests
Test("Order of operations test", ValidTest("2 + 6 * a4", sheet.GetCell, 20));
Test("Order of operations test 2", ValidTest("2 / 20* 80 - (12/6) +2", simpleLookup, 0));
Test("Order of operations test 3", ValidTest("(1+2)*2/3", null, 2));
Test("Order of operations test 4", ValidTest("B4*(B4-(10/(2+3)*8))", simpleLookup, 17));
Test("Order of operations zero test", ValidTest("0*((1+2*2/(2+1))*100000000 + 9999)", null, 0));
Test("Order of operations with parenthesis test", ValidTest("(2+6)*a4", sheet.GetCell, 24));
Test("Several operations inside parenthesis test", ValidTest("2+(3+5*9)", sheet.GetCell, 50));
Test("Consecutive operators test", ValidTest("1+(3/2)", simpleLookup, 2));
Test("Valid variable name test", ValidTest("B4", simpleLookup, 17));
Test("Nested parentheses test", ValidTest("(((((((((((((B4)))))))))))))", simpleLookup, 17));
Test("Valid sheet lookup", ValidTest("a4", sheet.GetCell, 3));
// Invalid tests
Test("Consecutive operators test 1", InvalidTest("1//2", simpleLookup));
Test("Consecutive operators test 2", InvalidTest("1+/2", simpleLookup));
Test("Consecutive operators test 3", InvalidTest("1+(2/3*)", simpleLookup));
Test("Division by 0 test 1", InvalidTest("5/0", sheet.GetCell));
Test("Division by 0 test 2", InvalidTest("5 * B4 + (7-4)/((4/2)-2)", sheet.GetCell));
Test("Misplaced operator test 1", InvalidTest("2+5+", sheet.GetCell));
Test("Misplaces operator test 2", InvalidTest("B4*(B4-(10/(2+3)/*8))", simpleLookup));
Test("Invalid variable name test 1", InvalidTest("2+AB", simpleLookup));
Test("Invalid variable name test 2", InvalidTest("2+AB123ac", simpleLookup));
Test("Invalid variable name test 3", InvalidTest("2+123AB", simpleLookup));
Test("Invalid variable name test 4", InvalidTest("2+123AB123", simpleLookup));
Test("Invalid variable name test 5", InvalidTest("b3", simpleLookup));
Test("Misplaced parenthesis test 1", InvalidTest("1+2*((3)", null));
Test("Misplaced parenthesis test 2", InvalidTest("1+2*(3))", null));
Test("Misplaces parenthesis test 3", InvalidTest("B4*(B4-(10/(2+3))*8))", simpleLookup));
Test("Extra operator test", InvalidTest("B4*(B4-(10/(2+3)*8)+)", simpleLookup));
Test("Extra operand test", InvalidTest("B4*(B4-(10/(2+3)*8)8)", simpleLookup));
Test("Invalid sheet lookup", InvalidTest("A4", sheet.GetCell));
// Pause the console
Console.Read();
}
static void Main(string[] args)
{
// We can invoke the evaluator with a simple static Lookup method, like so
Console.WriteLine(Evaluator.Evaluate("1 + 2 + B4", simpleLookup));
// Or we can make an object to hold variable values
// See the definition of FakeSpreadsheet below
FakeSpreadsheet sheet = new FakeSpreadsheet();
// This fake spreadsheet has values for two variables, A1, and A2
sheet.SetCell("A1", 12);
sheet.SetCell("A2", 100);
// Then invoke the evaluator with sheet's GetCell method acting as the Lookup delegate
Console.WriteLine(Evaluator.Evaluate("1 + 2 + A1", sheet.GetCell));
// Pause the console
Console.Read();
}
static void Main(string[] args)
{
// We can invoke the evaluator with a simple static Lookup method, like so
Console.WriteLine(Evaluator.Evaluate("1 + 2 + B4", simpleLookup));
// Or we can make an object to hold variable values
// See the definition of FakeSpreadsheet below
FakeSpreadsheet sheet = new FakeSpreadsheet();
// This fake spreadsheet has values for three variables, A1, A2, and a4
sheet.SetCell("A1", 12);
sheet.SetCell("A2", 100);
sheet.SetCell("a4", 3);
// Then invoke the evaluator with sheet's GetCell method acting as the Lookup delegate
Console.WriteLine(Evaluator.Evaluate("1 + 2 + A1", sheet.GetCell));
// Here we will use the ValidTest method to display helpful information in the console
Test("Order of operations test", ValidTest("2 + 6 * a4", sheet.GetCell, 20));
Test("Order of operations with parenthesis test", ValidTest("(2+6)*a4", sheet.GetCell, 24));
Test("Several operations inside parenthesis test", ValidTest("2+(3+5*9)", sheet.GetCell, 50));
// The same thing can be done using the InvalidTest method
Test("Division by 0 test", InvalidTest("5/0", sheet.GetCell));
Test("Invalid variable name test", InvalidTest("5+xx", sheet.GetCell));
Test("Misplaced operator test", InvalidTest("2+5+", sheet.GetCell));
// Pause the console
Console.Read();
}