Simplify Train (C#) folder structure

91_Train/csharp/TrainTests/TrainGameTests.cs

@@ -0,0 +1,53 @@
+using Train;
+using Xunit;
+
+namespace TrainTests
+{
+    public class TrainGameTests
+    {
+        [Fact]
+        public void MiniumRandomNumber()
+        {
+            TrainGame game = new TrainGame();
+            Assert.True(game.GenerateRandomNumber(10, 10) >= 10);
+        }
+
+        [Fact]
+        public void MaximumRandomNumber()
+        {
+            TrainGame game = new TrainGame();
+            Assert.True(game.GenerateRandomNumber(10, 10) <= 110);
+        }
+
+        [Fact]
+        public void IsInputYesWhenY()
+        {
+            Assert.True(TrainGame.IsInputYes("y"));
+        }
+
+        [Fact]
+        public void IsInputYesWhenNotY()
+        {
+            Assert.False(TrainGame.IsInputYes("a"));
+        }
+
+        [Fact]
+        public void CarDurationTest()
+        {
+            Assert.Equal(1, TrainGame.CalculateCarJourneyDuration(30, 1, 15) );
+        }
+
+        [Fact]
+        public void IsWithinAllowedDifference()
+        {
+            Assert.True(TrainGame.IsWithinAllowedDifference(5,5));
+        }
+
+
+        [Fact]
+        public void IsNotWithinAllowedDifference()
+        {
+            Assert.False(TrainGame.IsWithinAllowedDifference(6, 5));
+        }
+    }
+}