Day 11 part 1

AdventOfCode2023.FSharp/Test/Test.fsproj

@@ -19,6 +19,7 @@
     <Compile Include="TestDay8.fs"/>
     <Compile Include="TestDay9.fs"/>
     <Compile Include="TestDay10.fs" />
+    <Compile Include="TestDay11.fs" />
     <EmbeddedResource Include="samples\day1.txt"/>
     <EmbeddedResource Include="samples\day1part1.txt"/>
     <EmbeddedResource Include="samples\day2.txt"/>
@@ -32,6 +33,7 @@
     <EmbeddedResource Include="samples\day9.txt"/>
     <EmbeddedResource Include="samples\day10part1.txt" />
     <EmbeddedResource Include="samples\day10.txt" />
+    <EmbeddedResource Include="samples\day11.txt" />
   </ItemGroup>
 
   <ItemGroup>

AdventOfCode2023.FSharp/Test/TestDay11.fs

@@ -0,0 +1,44 @@
+namespace AdventOfCode2023.Test
+
+open AdventOfCode2023
+open NUnit.Framework
+open FsUnitTyped
+open System.IO
+
+[<TestFixture>]
+module TestDay11 =
+
+    let sample = Assembly.getEmbeddedResource typeof<Dummy>.Assembly "day11.txt"
+
+    [<Test>]
+    let part1Sample () =
+        sample |> Day11.part1 |> shouldEqual 374
+
+    [<Test>]
+    let part2Sample () = sample |> Day11.part2 |> shouldEqual -1
+
+    [<Test>]
+    let part1Actual () =
+        let s =
+            try
+                File.ReadAllText (Path.Combine (__SOURCE_DIRECTORY__, "../../inputs/day11.txt"))
+            with
+            | :? DirectoryNotFoundException
+            | :? FileNotFoundException ->
+                Assert.Inconclusive ()
+                failwith "unreachable"
+
+        Day11.part1 s |> shouldEqual 9947476
+
+    [<Test>]
+    let part2Actual () =
+        let s =
+            try
+                File.ReadAllText (Path.Combine (__SOURCE_DIRECTORY__, "../../inputs/day11.txt"))
+            with
+            | :? DirectoryNotFoundException
+            | :? FileNotFoundException ->
+                Assert.Inconclusive ()
+                failwith "unreachable"
+
+        Day11.part2 s |> shouldEqual -1

AdventOfCode2023.FSharp/Test/TestDay9.fs

@@ -15,10 +15,7 @@ module TestDay9 =
         sample |> Day9.part1 |> shouldEqual 114L
 
     [<Test>]
-    let part2Sample () =
-        Assembly.getEmbeddedResource typeof<Dummy>.Assembly "day9.txt"
-        |> Day9.part2
-        |> shouldEqual 2L
+    let part2Sample () = sample |> Day9.part2 |> shouldEqual 2L
 
     [<Test>]
     let part1Actual () =

AdventOfCode2023.FSharp/Test/samples/day11.txt

@@ -0,0 +1,10 @@
+...#......
+.......#..
+#.........
+..........
+......#...
+.#........
+.........#
+..........
+.......#..
+#...#.....