add csharp version to the exercice

csharp/TheatricalPlayersRefactoringKata.Tests/StatementPrinterTests.cs

@@ -0,0 +1,44 @@
+using System;
+using System.Collections.Generic;
+using ApprovalTests;
+using ApprovalTests.Reporters;
+using Xunit;
+
+namespace TheatricalPlayersRefactoringKata.Tests
+{
+    public class StatementPrinterTests
+    {
+        [Fact]
+        [UseReporter(typeof(DiffReporter))]
+        public void test_statement_exemple()
+        {
+            var plays = new Dictionary<string, Play>();
+            plays.Add("hamlet", new Play("Hamlet", "tragedy"));
+            plays.Add("as-like", new Play("As You Like It", "comedy"));
+            plays.Add("othello", new Play("Othello", "tragedy"));
+
+            Invoice invoice = new Invoice("BigCo", new List<Performance>{new Performance("hamlet", 55),
+                new Performance("as-like", 35),
+                new Performance("othello", 40)});
+            
+            StatementPrinter statementPrinter = new StatementPrinter();
+            var result = statementPrinter.Print(invoice, plays);
+
+            Approvals.Verify(result);
+        }
+        [Fact]
+        public void test_statement_with_new_play_types()
+        {
+            var plays = new Dictionary<string, Play>();
+            plays.Add("henry-v", new Play("Henry V", "history"));
+            plays.Add("as-like", new Play("As You Like It", "pastoral"));
+
+            Invoice invoice = new Invoice("BigCoII", new List<Performance>{new Performance("henry-v", 53),
+                new Performance("as-like", 55)});
+            
+            StatementPrinter statementPrinter = new StatementPrinter();
+
+            Assert.Throws<Exception>(() => statementPrinter.Print(invoice, plays));
+        }
+    }
+}