feat: solved day 11 part 1 and part 2

11/PlutonianPebbles.Tests/ObserverTests.cs

@@ -3,6 +3,54 @@
 public class ObserverTests
 {
   private static readonly string[] ExampleInput = ["125", "17"];
+
+  private async Task<string> GetPuzzleInput()
+  {
+    return await File.ReadAllTextAsync(Path.Combine(AppContext.BaseDirectory, "INPUT.txt"));
+  }
+  
+  [Test]
+  public async Task Blink_WhenCalledWithPuzzleInputAnd25Times_ItShouldReturnCorrectNumberOfStones()
+  {
+    var input = await GetPuzzleInput();
+    var stones = input
+      .Split(" ", StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries)
+      .Select(Stone.From)
+      .ToList();
+    
+    var observer = Observer.Of(stones);
+
+    var result = observer.Blink(25);
+
+    await Assert.That(result).IsEqualTo(191690);
+  }
+  
+  [Test]
+  public async Task Blink_WhenCalledWithPuzzleInputAnd75Times_ItShouldReturnCorrectNumberOfStones()
+  {
+    var input = await GetPuzzleInput();
+    var stones = input
+      .Split(" ", StringSplitOptions.TrimEntries | StringSplitOptions.RemoveEmptyEntries)
+      .Select(Stone.From)
+      .ToList();
+    
+    var observer = Observer.Of(stones);
+
+    var result = observer.Blink(75);
+
+    await Assert.That(result).IsEqualTo(228651922369703);
+  }
+  
+  [Test]
+  public async Task Blink_WhenCalledWithExampleInputAnd25Times_ItShouldReturnCorrectNumberOfStones()
+  {
+    var stones = ExampleInput.Select(Stone.From).ToList();
+    var observer = Observer.Of(stones);
+
+    var result = observer.Blink(25);
+
+    await Assert.That(result).IsEqualTo(55312);
+  }
   
   [Test]
   [MethodDataSource(nameof(BlinkTestCases))]
@@ -12,14 +60,20 @@ public class ObserverTests
     var observer = Observer.Of(stones);
 
     var result = observer.Blink(testCase.NumberOfBlinks);
-
-    await Assert.That(result).IsEqualTo(testCase.ExpectedLineOfStones);
+    
+    await Assert.That(result).IsEqualTo(testCase.ExpectedNumberOfStones);
   }
 
   public static IEnumerable<Func<BlinkTestCase>> BlinkTestCases()
   {
-    yield return () => new(ExampleInput, 0, "125 17");
+    yield return () => new(ExampleInput, 0, 2);
+    yield return () => new(ExampleInput, 1, 3);
+    yield return () => new(ExampleInput, 2, 4);
+    yield return () => new(ExampleInput, 3, 5);
+    yield return () => new(ExampleInput, 4, 9);
+    yield return () => new(ExampleInput, 5, 13);
+    yield return () => new(ExampleInput, 6, 22);
   }
 
-  public record BlinkTestCase(string[] Stones, int NumberOfBlinks, string ExpectedLineOfStones);
+  public record BlinkTestCase(string[] Stones, int NumberOfBlinks, long ExpectedNumberOfStones);
 }