test: check generated auth migration

scripts/check-better-auth-migration.mjs

@@ -0,0 +1,61 @@
+import { spawn } from "node:child_process";
+import { mkdtemp, readFile, rm } from "node:fs/promises";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const projectRoot = fileURLToPath(new URL("..", import.meta.url));
+const expectedFile = fileURLToPath(
+  new URL("../migrations/0001_better_auth_account_center.sql", import.meta.url),
+);
+
+function run(command, args) {
+  return new Promise((resolve, reject) => {
+    const child = spawn(command, args, {
+      cwd: projectRoot,
+      stdio: "inherit",
+      shell: process.platform === "win32",
+    });
+
+    child.on("error", reject);
+    child.on("exit", (code) => {
+      if (code === 0) {
+        resolve();
+        return;
+      }
+
+      reject(new Error(`${command} ${args.join(" ")} exited with code ${code}`));
+    });
+  });
+}
+
+const tempDir = await mkdtemp(join(tmpdir(), "cfw-auth-better-auth-"));
+const generatedFile = join(tempDir, "better-auth.sql");
+
+try {
+  await run("pnpm", [
+    "exec",
+    "auth",
+    "generate",
+    "--config",
+    "src/auth.migration.ts",
+    "--output",
+    generatedFile,
+    "-y",
+  ]);
+
+  const [expected, generated] = await Promise.all([
+    readFile(expectedFile, "utf8"),
+    readFile(generatedFile, "utf8"),
+  ]);
+
+  if (expected !== generated) {
+    throw new Error(
+      `${expectedFile} is out of date. Run pnpm db:generate and review the generated SQL.`,
+    );
+  }
+
+  console.log(`${expectedFile} is up to date.`);
+} finally {
+  await rm(tempDir, { recursive: true, force: true });
+}