AdventOfCode2018: Move tests to the corresponding day

AdventOfCode2018.Tests/Day06_Tests.cs

@@ -2,6 +2,63 @@
 
 public class Day06_Tests
 {
+    #region ChronoPoint_FromString
+
+    [Fact]
+    public void ChronoPoint_FromString__Test1()
+    {
+        Day06.ChronoPoint point = Day06.ChronoPoint.FromString("1, 1");
+
+        Assert.Equal(1, point.X);
+        Assert.Equal(1, point.Y);
+    }
+
+    [Fact]
+    public void ChronoPoint_FromString__Test2()
+    {
+        Day06.ChronoPoint point = Day06.ChronoPoint.FromString("1, 6");
+
+        Assert.Equal(1, point.X);
+        Assert.Equal(6, point.Y);
+    }
+
+    [Fact]
+    public void ChronoPoint_FromString__Test3()
+    {
+        Day06.ChronoPoint point = Day06.ChronoPoint.FromString("8, 9");
+
+        Assert.Equal(8, point.X);
+        Assert.Equal(9, point.Y);
+    }
+
+    #endregion ChronoPoint_FromString
+
+    #region ChronoPoint_ManhattanDistance
+
+    [Fact]
+    public void ChronoPoint_ManhattanDistance__Test1()
+    {
+        Day06.ChronoPoint p0 = Day06.ChronoPoint.FromString("8, 9");
+        Day06.ChronoPoint p1 = Day06.ChronoPoint.FromString("1, 6");
+
+        int distance = Day06.ChronoPoint.ManhattanDistance(p0, p1);
+
+        Assert.Equal(10, distance);
+    }
+
+    [Fact]
+    public void ChronoPoint_ManhattanDistance__Test2()
+    {
+        Day06.ChronoPoint p0 = Day06.ChronoPoint.FromString("1, 1");
+        Day06.ChronoPoint p1 = Day06.ChronoPoint.FromString("1, 6");
+
+        int distance = Day06.ChronoPoint.ManhattanDistance(p0, p1);
+
+        Assert.Equal(5, distance);
+    }
+
+    #endregion ChronoPoint_ManhattanDistance
+
     [Fact]
     public void ResolvePart1__Test()
     {
@@ -18,7 +75,7 @@ public class Day06_Tests
 
         Assert.Equal("17", result);
     }
-        
+
     [Fact]
     public void ResolvePart2__Test()
     {