diff --git a/2023/base/deno.json b/2023/base/deno.json
index 5881ebc..eb7be8f 100644
--- a/2023/base/deno.json
+++ b/2023/base/deno.json
@@ -1,5 +1,8 @@
 {
   "tasks": {
+    "cache": "deno cache part1.ts part2.ts",
+    "pull": "aoc --day 1 download --overwrite",
+    "test": "deno test --watch",
     "p1": "deno run -A part1.ts",
     "p2": "deno run -A part2.ts"
   }
diff --git a/2023/base/part1.ts b/2023/base/part1.ts
index 94d9dc3..5658bc9 100644
--- a/2023/base/part1.ts
+++ b/2023/base/part1.ts
@@ -1,4 +1,13 @@
-const input = await Deno.readFile("input").then((bytes) =>
-  new TextDecoder().decode(bytes),
-);
-const lines = input.trim().split("\n");
+if (import.meta.main) {
+  const input = (
+    await Deno.readFile("input").then((bytes) =>
+      new TextDecoder().decode(bytes),
+    )
+  ).trim();
+  console.log(answer(input));
+}
+
+export function answer(input: string): number {
+  console.log(input);
+  return 42;
+}
diff --git a/2023/base/part2.ts b/2023/base/part2.ts
new file mode 100644
index 0000000..5658bc9
--- /dev/null
+++ b/2023/base/part2.ts
@@ -0,0 +1,13 @@
+if (import.meta.main) {
+  const input = (
+    await Deno.readFile("input").then((bytes) =>
+      new TextDecoder().decode(bytes),
+    )
+  ).trim();
+  console.log(answer(input));
+}
+
+export function answer(input: string): number {
+  console.log(input);
+  return 42;
+}
diff --git a/2023/base/test.ts b/2023/base/test.ts
new file mode 100644
index 0000000..ef5e047
--- /dev/null
+++ b/2023/base/test.ts
@@ -0,0 +1,13 @@
+import { assertEquals } from "https://deno.land/std@0.208.0/assert/mod.ts";
+import * as p1 from "./part1.ts";
+import * as p2 from "./part2.ts";
+
+Deno.test("part1", () => {
+  const examples = ["abc", "def"].join("\n");
+  assertEquals(p1.answer(examples), 42);
+});
+
+Deno.test("part2", () => {
+  const examples = ["abc", "def"].join("\n");
+  assertEquals(p2.answer(examples), 42);
+});