feat: solve day 5 part 1

2024-12-05 23:10:08 -06:00
parent d8f67e85ca
commit a9f9dec7aa
9 changed files with 292 additions and 6 deletions
@@ -0,0 +1,76 @@
+namespace PrintQueue.Tests;
+
+public class PuzzleParserTests
+{
+  private readonly PuzzleParser _puzzleParser = new();
+  private readonly string _exampleInput = $"47|53{Environment.NewLine}97|13{Environment.NewLine}97|61{Environment.NewLine}97|47{Environment.NewLine}75|29{Environment.NewLine}61|13{Environment.NewLine}75|53{Environment.NewLine}29|13{Environment.NewLine}97|29{Environment.NewLine}53|29{Environment.NewLine}61|53{Environment.NewLine}97|53{Environment.NewLine}61|29{Environment.NewLine}47|13{Environment.NewLine}75|47{Environment.NewLine}97|75{Environment.NewLine}47|61{Environment.NewLine}75|61{Environment.NewLine}47|29{Environment.NewLine}75|13{Environment.NewLine}53|13{Environment.NewLine}{Environment.NewLine}75,47,61,53,29{Environment.NewLine}97,61,53,29,13{Environment.NewLine}75,29,13{Environment.NewLine}75,97,47,61,53{Environment.NewLine}61,13,29{Environment.NewLine}97,13,75,29,47";
+
+  private static async Task<string> GetPuzzleInput()
+  {
+    return await File.ReadAllTextAsync(Path.Combine(AppContext.BaseDirectory, "INPUT.txt"));
+  }
+  
+  [Test]
+  public async Task Parse_WhenGivenExampleInput_ItShouldReturnExpectedRules()
+  {
+    var result = _puzzleParser.Parse(_exampleInput);
+
+    await Assert.That(result.Rules).IsEquivalentTo(new List<OrderRule>()
+    {
+      new(47, 53),
+      new(97, 13),
+      new(97, 61),
+      new(97, 47),
+      new(75, 29),
+      new(61, 13),
+      new(75, 53),
+      new(29, 13),
+      new(97, 29),
+      new(53, 29),
+      new(61, 53),
+      new(97, 53),
+      new(61, 29),
+      new(47, 13),
+      new(75, 47),
+      new(97, 75),
+      new(47, 61),
+      new(75, 61),
+      new(47, 29),
+      new(75, 13),
+      new(53, 13),
+    });
+  }
+  
+  [Test]
+  public async Task Parse_WhenGivenExampleInput_ItShouldReturnExpectedUpdates()
+  {
+    var result = _puzzleParser.Parse(_exampleInput);
+
+    await Assert.That(result.Updates).IsEquivalentTo(new List<Update>()
+    {
+      new([75,47,61,53,29]),
+      new([97,61,53,29,13]),
+      new([75,29,13]),
+      new([75,97,47,61,53]),
+      new([61,13,29]),
+      new([97,13,75,29,47]),
+    });
+  }
+
+  [Test]
+  public async Task Parse_WhenGivenPuzzleInput_ItShouldReturnExpectedResult()
+  {
+    var input = await GetPuzzleInput();
+
+    var parseResult = _puzzleParser.Parse(input);
+    
+    var validator = new UpdateValidator(parseResult.Rules);
+
+    var result = parseResult.Updates
+      .Where(u => validator.Validate(u))
+      .Select(u => u.GetMiddlePage())
+      .Sum();
+
+    await Assert.That(result).IsEqualTo(6260);
+  }
+}
@@ -0,0 +1,19 @@
+namespace PrintQueue.Tests;
+
+public class UpdateTests
+{
+  [Test]
+  public async Task GetMiddlePage_WhenCalled_ItShouldReturnExpectedPage()
+  {
+    var updates = new List<Update>()
+    {
+      new([75,47,61,53,29]),
+      new([97,61,53,29,13]),
+      new([75,29,13]),
+    };
+
+    var result = updates.Select(u => u.GetMiddlePage()).Sum();
+
+    await Assert.That(result).IsEqualTo(143);
+  }
+}
@@ -0,0 +1,84 @@
+namespace PrintQueue.Tests;
+
+public class UpdateValidatorTests
+{
+  private readonly List<OrderRule> _exampleRules = [
+    new(47, 53),
+    new(97, 13),
+    new(97, 61),
+    new(97, 47),
+    new(75, 29),
+    new(61, 13),
+    new(75, 53),
+    new(29, 13),
+    new(97, 29),
+    new(53, 29),
+    new(61, 53),
+    new(97, 53),
+    new(61, 29),
+    new(47, 13),
+    new(75, 47),
+    new(97, 75),
+    new(47, 61),
+    new(75, 61),
+    new(47, 29),
+    new(75, 13),
+    new(53, 13),
+  ];
+
+  [Test]
+  public async Task Graph_WhenGivenExampleRules_ItShouldBuildExpectedGraph()
+  {
+    var expectedGraph = new Dictionary<int, HashSet<int>>()
+    {
+      { 47, [53, 13, 61, 29] },
+      { 53, [29, 13] },
+      { 97, [13, 61, 47, 29, 53, 75] },
+      { 13, [] },
+      { 61, [13, 53, 29] },
+      { 75, [29, 53, 47, 61, 13] },
+      { 29, [13] },
+    };
+    
+    var validator = new UpdateValidator(_exampleRules);
+    
+    await Assert.That(validator.Graph.Keys).IsEquivalentTo(expectedGraph.Keys);
+    await Assert.That(validator.Graph.Values).IsEquivalentTo(expectedGraph.Values);
+  }
+
+  [Test]
+  public async Task Validate_WhenGivenValidUpdate_ItShouldReturnTrue()
+  {
+    var updateOne = new Update([75, 47, 61, 53, 29]);
+    var updateTwo = new Update([97,61,53,29,13]);
+    var updateThree = new Update([75,29,13]);
+
+    var validator = new UpdateValidator(_exampleRules);
+    
+    var resultOne = validator.Validate(updateOne);
+    var resultTwo = validator.Validate(updateTwo);
+    var resultThree = validator.Validate(updateThree);
+    
+    await Assert.That(resultOne).IsTrue();
+    await Assert.That(resultTwo).IsTrue();
+    await Assert.That(resultThree).IsTrue();
+  }
+
+  [Test]
+  public async Task Validate_WhenGivenInvalidUpdate_ItShouldReturnFalse()
+  {
+    var updateOne = new Update([75,97,47,61,53]);
+    var updateTwo = new Update([61,13,29]);
+    var updateThree = new Update([97,13,75,29,47]);
+
+    var validator = new UpdateValidator(_exampleRules);
+    
+    var resultOne = validator.Validate(updateOne);
+    var resultTwo = validator.Validate(updateTwo);
+    var resultThree = validator.Validate(updateThree);
+    
+    await Assert.That(resultOne).IsFalse();
+    await Assert.That(resultTwo).IsFalse();
+    await Assert.That(resultThree).IsFalse();
+  }
+}