Add more examples

ContainsSequence.fs

@@ -0,0 +1,41 @@
+namespace Tests
+
+open System
+open NFA
+open DFA
+
+module ContainsSequence = 
+    
+    let contains0101:NFA = {
+        sigma = Seq.toList "01";
+        states = [
+            {name = "q0"};
+            {name = "q1"};
+            {name = "q2"};
+            {name = "q3"}
+            {name = "yes"}
+        ];
+        delta = (fun x y -> 
+            match (x, y) with
+            | ({name = "q0"}, '0') -> [{name = "q0"}; {name = "q1"}]
+            | ({name = "q1"}, '1') -> [{name = "q0"}; {name = "q2"}]
+            | ({name = "q2"}, '0') -> [{name = "q0"}; {name = "q3"}]
+            | ({name = "q3"}, '1') -> [{name = "yes"}]
+            | ({name = "yes"}, _) -> [{name = "yes"}]
+            | _ -> []
+        );
+        beginState = {name = "q0"};
+        acceptingStates = [{name = "yes"}]
+
+    }
+
+    let test = 
+        printfn "Testing contains sequence NFA"
+        printfn "Contains '0101' ?"
+        printfn "0101: %b" (NFA.acceptsWord contains0101 "0101")
+        printfn "0000: %b" (NFA.acceptsWord contains0101 "0000")
+        printfn "1010: %b" (NFA.acceptsWord contains0101 "1010")
+        printfn "0100: %b" (NFA.acceptsWord contains0101 "0100")
+        printfn "00101: %b" (NFA.acceptsWord contains0101 "00101")
+        printfn "01011: %b" (NFA.acceptsWord contains0101 "01011")
+        0

IsNumericChecker.fs

@@ -1,9 +1,11 @@
-module Tests
+namespace Tests
 
 open System
 open DFA
 open NFA
 
+module IsNumeric = 
+
     let numericDFA:DFA = {
         sigma = Seq.toList "01ab";
         states = [
@@ -40,7 +42,9 @@ let test =
         printfn "Is valid DFA: %b" (DFA.validateDFA numericDFA)
         printfn "0101: %b" (DFA.acceptsWord numericDFA "0101")
         printfn "01a1: %b" (DFA.acceptsWord numericDFA "01a1")
+        printfn "Empty: %b" (DFA.acceptsWord numericDFA "")
         printfn "Testing numeric checker NFA"
         printfn "0101: %A" (NFA.acceptsWord numericNFA "0101")
         printfn "01a1: %b" (NFA.acceptsWord numericNFA "01a1")
+        printfn "Empty: %b" (NFA.acceptsWord numericNFA "")
         0

Program.fs

@@ -4,5 +4,8 @@ open System
 [<EntryPoint>]
 let main argv =
     printfn "Finite Automata in F#"
-    Tests.test |> ignore
+    
+    Tests.IsNumeric.test |> ignore
+    Tests.ContainsSequence.test |> ignore
+
     0 // return an integer exit code

fsharp-finite-automata.fsproj

@@ -8,6 +8,7 @@
     <Compile Include="DFA.fs" />
     <Compile Include="NFA.fs" />
     <Compile Include="IsNumericChecker.fs" />
+    <Compile Include="ContainsSequence.fs" />
     <Compile Include="Program.fs" />
   </ItemGroup>
 </Project>