Refactor Study Desk application structure

tests/migrationSchema.test.ts

@@ -0,0 +1,40 @@
+import Database from "better-sqlite3";
+import path from "node:path";
+import { describe, expect, it } from "vitest";
+
+function testDatabasePath() {
+  const databaseUrl = process.env.DATABASE_URL;
+  if (!databaseUrl?.startsWith("file:./")) {
+    throw new Error("Disposable test DATABASE_URL was not provided");
+  }
+  return path.resolve(process.cwd(), databaseUrl.slice("file:".length));
+}
+
+describe("committed migration chain", () => {
+  it("creates material groups and all expected group relationships", () => {
+    const database = new Database(testDatabasePath(), { readonly: true });
+    try {
+      const tables = database
+        .prepare("SELECT name FROM sqlite_master WHERE type = 'table'")
+        .all() as Array<{ name: string }>;
+      expect(tables.map((table) => table.name)).toContain("MaterialGroup");
+
+      for (const table of ["Deck", "QuizSet", "ShareLink"]) {
+        const columns = database.pragma(`table_info(${table})`) as Array<{
+          name: string;
+        }>;
+        expect(columns.map((column) => column.name)).toContain("groupId");
+      }
+
+      const groupIndexes = database.pragma("index_list(ShareLink)") as Array<{
+        name: string;
+        unique: number;
+      }>;
+      expect(groupIndexes).toContainEqual(
+        expect.objectContaining({ name: "ShareLink_groupId_key", unique: 1 })
+      );
+    } finally {
+      database.close();
+    }
+  });
+});