feat: solve part 2

10/PipeMaze.Tests/MazeTests.cs

@@ -36,13 +36,25 @@ public class MazeTests
   [MemberData(nameof(TestData.FurthestStepFromStartTestData), MemberType = typeof(TestData))]
   public void FurthestStepFromStart_WhenGivenInput_ItShouldReturnExpectedFurthestStepFromStart(Maze maze, int expectedFurthestStepFromStart)
   {
-    maze.FarthestStepFromStart
+    maze.GetFarthestStepFromStart()
       .Should()
       .Be(expectedFurthestStepFromStart);
   }
 
+  [Theory]
+  [MemberData(nameof(TestData.AreaTestData), MemberType = typeof(TestData))]
+  public void Area_WhenGivenInput_ItShouldReturnExpectedArea(string[] input, int expectedArea)
+  {
+    var maze = Maze.Parse(input);
+    maze.GetAreaOfLoop()
+      .Should()
+      .Be(expectedArea);
+  }
+
   public static class TestData
   {
+    private static readonly string[] Input = File.ReadAllLines("INPUT.txt");
+
     private static readonly string[] TestMazeInput =
     {
       ".....",
@@ -68,6 +80,66 @@ public class MazeTests
         ]
       );
 
+    public static IEnumerable<object[]> AreaTestData =>
+      new List<object[]>
+      {
+        new object[]
+        {
+          new string[]
+          {
+            "...........",
+            ".S-------7.",
+            ".|F-----7|.",
+            ".||.....||.",
+            ".||.....||.",
+            ".|L-7.F-J|.",
+            ".|..|.|..|.",
+            ".L--J.L--J.",
+            "...........",
+          },
+          4,
+        },
+        new object[]
+        {
+          new string[]
+          {
+            ".F----7F7F7F7F-7....",
+            ".|F--7||||||||FJ....",
+            ".||.FJ||||||||L7....",
+            "FJL7L7LJLJ||LJ.L-7..",
+            "L--J.L7...LJS7F-7L7.",
+            "....F-J..F7FJ|L7L7L7",
+            "....L7.F7||L7|.L7L7|",
+            ".....|FJLJ|FJ|F7|.LJ",
+            "....FJL-7.||.||||...",
+            "....L---J.LJ.LJLJ...",
+          },
+          8
+        },
+        new object[]
+        {
+          new string[]
+          {
+            "FF7FSF7F7F7F7F7F---7",
+            "L|LJ||||||||||||F--J",
+            "FL-7LJLJ||||||LJL-77",
+            "F--JF--7||LJLJ7F7FJ-",
+            "L---JF-JLJ.||-FJLJJ7",
+            "|F|F-JF---7F7-L7L|7|",
+            "|FFJF7L7F-JF7|JL---7",
+            "7-L-JL7||F7|L7F-7F7|",
+            "L.L7LFJ|||||FJL7||LJ",
+            "L7JLJL-JLJLJL--JLJ.L",
+          },
+          10
+        },
+        new object[]
+        {
+          Input,
+          287,
+        }
+      };
+
     public static IEnumerable<object[]> FurthestStepFromStartTestData =>
       new List<object[]>
       {
@@ -112,6 +184,11 @@ public class MazeTests
             ]
           ),
           8,
+        },
+        new object[]
+        {
+          Maze.Parse(Input),
+          6870,
         }
       };