feat: solve part 1

2023-12-18 22:51:12 -06:00
parent e37fbc977c
commit 92e3e32d0b
4 changed files with 384 additions and 12 deletions
@@ -0,0 +1,160 @@
+namespace PointOfIncidence.Tests;
+
+public class PatternTests
+{
+  [Theory]
+  [MemberData(nameof(TestData.ParseTestData), MemberType = typeof(TestData))]
+  public void Parse_GivenAPattern_ItShouldReturnPatternInstance(string[] input, Pattern expected)
+  {
+    var result = Pattern.Parse(input);
+    result.Should().BeEquivalentTo(expected);
+  }
+
+  [Theory]
+  [MemberData(nameof(TestData.FindPointOfReflectionTestData), MemberType = typeof(TestData))]
+  public void FindPointOfReflection_GivenAPattern_ItShouldReturnPointOfReflection(string[] input, PointOfReflection expected)
+  {
+    var pattern = Pattern.Parse(input);
+    var result = pattern.FindPointOfReflection();
+    result.Should().BeEquivalentTo(expected);
+  }
+
+  [Fact]
+  public void SummarizePatternNotes_GivenExampleInput_ItShouldReturnExpectedValue()
+  {
+    var input = File
+      .ReadAllText("EXAMPLE.txt")
+      .ReplaceLineEndings();
+
+    var patterns = input
+      .Split(Environment.NewLine + Environment.NewLine)
+      .Select(p => p.Split(Environment.NewLine));
+
+    var result = patterns
+      .Select(Pattern.Parse)
+      .Sum(p => p.SummarizePatternNotes());
+
+    result.Should().Be(405);
+  }
+
+
+  [Fact]
+  public void SummarizePatternNotes_GivenInput_ItShouldReturnExpectedValue()
+  {
+    var input = File
+      .ReadAllText("INPUT.txt")
+      .ReplaceLineEndings();
+
+    var patterns = input
+      .Split(Environment.NewLine + Environment.NewLine)
+      .Select(p => p.Split(Environment.NewLine));
+
+    var result = patterns
+      .Select(Pattern.Parse)
+      .Select(p => p.SummarizePatternNotes())
+      .Sum();
+
+    result.Should().Be(33728);
+  }
+
+  public static class TestData
+  {
+    public static IEnumerable<object[]> ParseTestData =>
+      new List<object[]>
+      {
+        new object[]
+        {
+          new string[]
+          {
+            "#.##..##.",
+            "..#.##.#.",
+          },
+          new Pattern(
+            [
+              ['#', '.', '#', '#', '.', '.', '#', '#', '.'],
+              ['.', '.', '#', '.', '#', '#', '.', '#', '.'],
+            ],
+            [
+              ['#', '.'],
+              ['.', '.'],
+              ['#', '#'],
+              ['#', '.'],
+              ['.', '#'],
+              ['.', '#'],
+              ['#', '.'],
+              ['#', '#'],
+              ['.', '.'],
+            ]
+          ),
+        }
+      };
+
+    public static IEnumerable<object[]> FindPointOfReflectionTestData =>
+      new List<object[]>
+      {
+        new object[]
+        {
+          new string[]
+          {
+            "#...##..#",
+            "#....#..#",
+            "..##..###",
+            "#####.##.",
+            "#####.##.",
+            "..##..###",
+            "#....#..#",
+          },
+          new PointOfReflection
+          {
+            Type = ReflectionType.Horizontal,
+            StartIndex = 3,
+            EndIndex = 4,
+          },
+        },
+        new object[]
+        {
+          new string[]
+          {
+            "#.##..##.",
+            "..#.##.#.",
+            "##......#",
+            "##......#",
+            "..#.##.#.",
+            "..##..##.",
+            "#.#.##.#.",
+          },
+          new PointOfReflection
+          {
+            Type = ReflectionType.Vertical,
+            StartIndex = 4,
+            EndIndex = 5,
+          }
+        },
+        new object[]
+        {
+          new string[]
+          {
+            "...##..##.#.#",
+            ".##.#####.###",
+            "##.#....####.",
+            "#.#....#.#..#",
+            ".#..#.#...#.#",
+            ".#..#.#...#.#",
+            "#.#....#.#..#",
+            "##.#....####.",
+            ".########.###",
+            "...##..##.#.#",
+            "#.#.###.....#",
+            "#.#.###.....#",
+            "...##..##.#.#",
+          },
+          new PointOfReflection
+          {
+            Type = ReflectionType.Horizontal,
+            StartIndex = 10,
+            EndIndex = 11,
+          },
+        },
+      };
+  }
+}