tests: add input file as test case

08/HauntedWasteland.Tests/HauntedWasteland.Tests.csproj

@@ -27,4 +27,10 @@
     <ProjectReference Include="..\HauntedWasteland\HauntedWasteland.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Content Include="..\INPUT.txt">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </Content>
+  </ItemGroup>
+
 </Project>

08/HauntedWasteland.Tests/MapTests.cs

@@ -39,6 +39,11 @@ public class MapTests
           MapInput,
           2
         },
+        new object[]
+        {
+          File.ReadAllLines("INPUT.txt"),
+          13019
+        }
       };
 
     public static IEnumerable<object[]> ParseMapTestData =>