feat: solve day 7 part 1 and part 2

2024-12-07 19:59:44 -06:00
parent 7f4f514b8c
commit 8f7f617182
7 changed files with 268 additions and 2 deletions
@@ -0,0 +1,87 @@
+namespace BridgeRepair.Tests;
+
+public class EquationTests
+{
+  [Test]
+  [MethodDataSource(nameof(GeneratePossibleOperatorConfigurationsTestCases))]
+  public async Task GeneratePossibleOperatorConfigurations_WhenCalled_ItShouldGenerateExpectedCombinations(GeneratePossibleOperatorConfigurationsTestCase testCase)
+  {
+    var result = new Equation(testCase.TargetValue, testCase.Numbers).GeneratePossibleOperatorConfigurations().ToList();
+
+    await Assert.That(result).IsEquivalentTo(testCase.ExpectedCombinations);
+  }
+  
+  [Test]
+  [MethodDataSource(nameof(EvaluateTestCases))]
+  public async Task Evaluate_WhenCalled_ItShouldReturnExpectedValue(EvaluateTestCase testCase)
+  {
+    var result = new Equation(testCase.TargetValue, testCase.Numbers).Evaluate(testCase.Combinations);
+
+    await Assert.That(result).IsEquivalentTo(testCase.ExpectedValue);
+  }
+  
+  [Test]
+  [MethodDataSource(nameof(IsPossibleTestCases))]
+  public async Task IsPossible_WhenCalled_ItShouldReturnExpectedValue(IsPossibleTestCase testCase)
+  {
+    var result = new Equation(testCase.TargetValue, testCase.Numbers).IsPossible();
+
+    await Assert.That(result).IsEquivalentTo(testCase.ExpectedValue);
+  }
+  
+  [Test]
+  public async Task IsPossible_WhenCalledWithPart2_ItShouldReturnExpectedValue()
+  {
+    // TODO: Make data driven test
+    var resultOne = new Equation(156, [15, 6]).IsPossible(isPart2: true);
+    var resultTwo = new Equation(7290, [6, 8, 6, 15]).IsPossible(isPart2: true);
+    var resultThree = new Equation(192, [17, 8, 14]).IsPossible(isPart2: true);
+    
+    await Assert.That(resultOne).IsTrue();
+    await Assert.That(resultTwo).IsTrue();
+    await Assert.That(resultThree).IsTrue();
+  }
+  
+  public static IEnumerable<Func<IsPossibleTestCase>> IsPossibleTestCases()
+  {
+    yield return () => new(190, [10, 19], true);
+    yield return () => new(3267, [81, 40, 27], true);
+    yield return () => new(83, [17, 5], false);
+    yield return () => new(156, [15, 6], false);
+    yield return () => new(7290, [6, 8, 6, 15], false);
+    yield return () => new(161011, [16, 10, 13], false);
+    yield return () => new(192, [17, 8, 14], false);
+    yield return () => new(21037, [9, 7, 18, 13], false);
+    yield return () => new(292, [11, 6, 16, 20], true);
+  }
+
+  public record IsPossibleTestCase(long TargetValue, List<long> Numbers, bool ExpectedValue);
+
+  public static IEnumerable<Func<EvaluateTestCase>> EvaluateTestCases()
+  {
+    yield return () => new(190, [10, 19], ['+'], 29);
+    yield return () => new(190, [10, 19], ['*'], 190);
+    yield return () => new(3267, [81, 40, 27], ['*', '+'], 3267);
+    yield return () => new(292, [11, 6, 16, 20], ['+', '*', '+'], 292);
+  }
+  
+  public record EvaluateTestCase(long TargetValue, List<long> Numbers, char[] Combinations, long ExpectedValue);
+
+  public static IEnumerable<Func<GeneratePossibleOperatorConfigurationsTestCase>> GeneratePossibleOperatorConfigurationsTestCases()
+  {
+    yield return () => new(190, [10, 19], [['+'], ['*']]);
+    yield return () => new(3267, [81, 40, 27], [['+', '+'], ['*', '+'], ['+', '*'], ['*', '*']]);
+    yield return () => new(292, [11, 6, 16, 20], [
+      ['+', '+', '+'],
+      ['*', '+', '+'],
+      ['+', '*', '+'],
+      ['*', '*', '+'],
+      ['+', '+', '*'],
+      ['*', '+', '*'],
+      ['+', '*', '*'],
+      ['*', '*', '*'],
+    ]);
+  }
+    
+  public record GeneratePossibleOperatorConfigurationsTestCase(long TargetValue, List<long> Numbers, List<char[]> ExpectedCombinations);
+}
@@ -0,0 +1,75 @@
+namespace BridgeRepair.Tests;
+
+public class PuzzleParserTests
+{
+  private readonly PuzzleParser _parser = new();
+  private readonly string[] _exampleInput = [
+    "190: 10 19",
+    "3267: 81 40 27",
+    "83: 17 5",
+    "156: 15 6",
+    "7290: 6 8 6 15",
+    "161011: 16 10 13",
+    "192: 17 8 14",
+    "21037: 9 7 18 13",
+    "292: 11 6 16 20",
+  ];
+
+  private async Task<string[]> GetPuzzleInput()
+  {
+    return await File.ReadAllLinesAsync(Path.Combine(AppContext.BaseDirectory, "INPUT.txt"));
+  }
+  
+  [Test]
+  public async Task SolutionPartOne_WhenGivenExampleInput_ItShouldReturnExpectedValue()
+  {
+    var result = _parser.Parse(_exampleInput).Where(e => e.IsPossible()).Sum(e => e.TestValue);
+
+    await Assert.That(result).IsEqualTo(3749);
+  }
+  
+  [Test]
+  public async Task SolutionPartOne_WhenGivenPuzzleInput_ItShouldReturnExpectedValue()
+  {
+    var input = await GetPuzzleInput();
+    var result = _parser.Parse(input).Where(e => e.IsPossible()).Sum(e => e.TestValue);
+
+    await Assert.That(result).IsEqualTo(14711933466277);
+  }
+  
+  [Test]
+  public async Task SolutionPartTwo_WhenGivenExampleInput_ItShouldReturnExpectedValue()
+  {
+    var result = _parser.Parse(_exampleInput).Where(e => e.IsPossible(isPart2: true)).Sum(e => e.TestValue);
+
+    await Assert.That(result).IsEqualTo(11387);
+  }
+  
+  [Test]
+  public async Task SolutionPartTwo_WhenGivenPuzzleInput_ItShouldReturnExpectedValue()
+  {
+    var input = await GetPuzzleInput();
+    var result = _parser.Parse(input).Where(e => e.IsPossible(isPart2: true)).Sum(e => e.TestValue);
+
+    await Assert.That(result).IsEqualTo(286580387663654);
+  }
+  
+  [Test]
+  public async Task Parse_WhenGivenExampleInput_ItShouldReturnExpectedList()
+  {
+    var result = _parser.Parse(_exampleInput);
+
+    await Assert.That(result).IsEquivalentTo(new List<Equation>()
+    {
+      new(190, [10, 19]),
+      new(3267, [81, 40, 27]),
+      new(83, [17, 5]),
+      new(156, [15, 6]),
+      new(7290, [6, 8, 6, 15]),
+      new(161011, [16, 10, 13]),
+      new(192, [17, 8, 14]),
+      new(21037, [9, 7, 18, 13]),
+      new(292, [11, 6, 16, 20]),
+    });
+  }
+}