From 0c69ceb612bba35a2228086831144119e0d26a88 Mon Sep 17 00:00:00 2001
From: Alix von Schirp <github@avonschirp.bootmedia.de>
Date: Tue, 11 Nov 2025 03:46:11 +0100
Subject: [PATCH] qol: Allow for testing with testinput.txt

---
 index.ts | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)

diff --git a/index.ts b/index.ts
index 88498e2..80b23b7 100644
--- a/index.ts
+++ b/index.ts
@@ -142,6 +142,80 @@ program
     runner(`./src/${year}/${day}/input.txt`);
   });
 
+program
+  .command("test [year] [day] [part]")
+  .description("Run the solution for the specified year and day")
+  .action(async (year, day, part) => {
+    if (!year) {
+      // Get list of years from 2015 to current
+      const currentYear = new Date().getFullYear();
+      const years = [];
+      for (let y = currentYear; y >= 2015; y--) {
+        years.push(y.toString());
+      }
+      
+      //Filter for existing directories
+      const yearExistenceChecks = await Promise.all(
+        years.map(async (value) => {
+          const exists = await existsDir(`src/${value}`);
+          return { value, exists };
+        }),
+      );
+      const fYears = yearExistenceChecks
+        .filter((item) => item.exists)
+        .map((item) => item.value);
+      
+      // Prompt user to select year
+      year = await select({
+        message: "What year do you want to run?",
+        choices: fYears,
+        loop: false,
+      });
+    }
+    
+    if (!day) {
+      // Get list of days from 1 to 25 or 12 depending on year
+      // Starting 2025 only 12 challenges will be available
+      const days = [];
+      for (let d = year < 2025 ? 25 : 12; d >= 1; d--) {
+        days.push(d.toString());
+      }
+      
+      // Filter for existing directories
+      const dayExistenceChecks = await Promise.all(
+        days.map(async (value) => {
+          const exists = await existsDir(`src/${year}/${value}`);
+          return { value, exists };
+        }),
+      );
+      const fDays = dayExistenceChecks
+        .filter((item) => item.exists)
+        .map((item) => item.value);
+      
+      // Prompt user to select day
+      day = await select({
+        message: "What day do you want to run?",
+        choices: fDays,
+        loop: false,
+      });
+    }
+    
+    if (!part) {
+      // Prompt user to select part
+      part = await select({
+        message: "What part do you want to run?",
+        choices: ["1", "2"],
+        loop: false,
+      });
+    }
+    
+    const { default: runner } = await import(
+      `./src/${year}/${day}/${part}/index.ts`
+      );
+    
+    runner(`./src/${year}/${day}/testinput.txt`);
+  });
+
 program.parse(process.argv);
 
 async function existsDir(path: string): Promise<boolean> {