Add smoke test for DB ops

src/storage/db/database-test-init.ts

@@ -0,0 +1,9 @@
+import { connectToDb, disconnectFromDb } from "./db.js";
+
+export default async function createDatabase() {
+    await connectToDb(":memory:");
+
+    return async () => {
+        await disconnectFromDb();
+    };
+}

src/storage/db/db.ts

@@ -15,6 +15,10 @@ let kysely: Kysely<Database>;
 export default () => kysely;
 
 export async function connectToDb(databasePath: string) {
+    if (kysely) {
+        return;
+    }
+
     const nativeDb = new SqliteDatabase(databasePath);
     const db = new Kysely<Database>({
         dialect: new BunSqliteDialect({

src/utils/smoke.test.ts

@@ -1,7 +1,36 @@
-import { describe, expect, test } from "bun:test";
+import { describe, expect, test, beforeEach } from "bun:test";
+
+import createDatabase from "../storage/db/database-test-init.js";
+
+import db from "@db";
 
 describe("smoke", () => {
     test("does math still hold?", () => {
         expect(1 + 1).toBe(2);
     });
 });
+
+describe("database smoke", () => {
+    beforeEach(createDatabase);
+
+    test("does database work?", async () => {
+        const res = await db()
+            .insertInto("birthdays")
+            .values({
+                day: 1,
+                month: 2,
+                userId: "12345",
+            })
+            .returningAll()
+            .executeTakeFirstOrThrow();
+
+        expect(res).toMatchObject({
+            day: 1,
+            month: 2,
+            userId: "12345",
+        });
+
+        const res2 = await db().selectFrom("birthdays").selectAll().executeTakeFirstOrThrow();
+        expect(res).toStrictEqual(res2);
+    });
+});