test(better-auth): add mock infrastructure for unit tests (#104)

test(better-auth): add mock infrastructure for unit tests

- Move E2E tests (adapter.test.ts, migrate.test.ts) to tests/e2e/
- Create mock fetch utilities and OData response fixtures
- Add unit tests for adapter operations using mocked responses
- Update vitest.config.ts to exclude E2E tests
- Add test:e2e script for running E2E tests separately

Co-Authored-By: Claude Opus 4.5 <[email protected]>

test(typegen): add mock infrastructure for unit tests (#103)

## Summary
- Create layout metadata fixtures (`tests/fixtures/layout-metadata.ts`)
- Add mock fetch utility for mocking FM Data API calls (`tests/utils/mock-fetch.ts`)
- Move E2E tests requiring live FM server to `tests/e2e/`
- Create unit tests that use mocked metadata (11 tests)
- Update `vitest.config.ts` to exclude e2e tests by default
- Add `test:e2e` script for running E2E tests with doppler

## Test plan
- [x] `pnpm --filter @proofkit/typegen lint` passes
- [x] `pnpm --filter @proofkit/typegen typecheck` passes
- [x] `pnpm --filter @proofkit/typegen test` passes (11 unit tests)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> Establishes isolated unit testing with mocks and separates E2E runs across the repo.
> 
> - **Better Auth**: Add mock OData responses and `mock-fetch` utils; create comprehensive adapter unit tests; move adapter/migrate E2E to `tests/e2e`; add `test:e2e` script; update `vitest.config.ts` to exclude E2E; small refactor in `migrate.ts` for safer type normalization and explicit FM type mapping
> - **Typegen**: Add layout metadata fixtures and mock fetch utils; create unit tests using mocked metadata; move live E2E to `tests/e2e`; add `test:e2e` script; update `vitest.config.ts` to exclude E2E
> - **Fmodata**: Relocate E2E tests to `tests/e2e`; update `test:e2e` to run folder
> - **CLI**: Simplify `test` script to `vitest run`; update vitest config to exclude E2E-like test
> - **Repo scripts**: Tweak `scripts/ralph-once.sh` workflow command
> 
> <sup>Written by [Cursor Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit 67a2fec. This will update automatically on new commits. Configure [here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

test(fmodata): move E2E tests to tests/e2e folder

Move e2e.test.ts and schema-manager.test.ts to tests/e2e/ so they're excluded from default test runs. Update test:e2e script to run entire e2e folder.

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: eluce2

packages/better-auth/package.json

@@ -6,7 +6,8 @@
   "main": "dist/esm/index.js",
   "scripts": {
     "dev": "pnpm build:watch",
-    "test": "doppler run -c test_betterauth -- vitest run",
+    "test": "vitest run",
+    "test:e2e": "doppler run -c test_betterauth -- vitest run tests/e2e",
     "typecheck": "tsc --noEmit",
     "build": "vite build && publint --strict",
     "build:watch": "vite build --watch",

packages/better-auth/src/migrate.ts

@@ -8,8 +8,12 @@ import type { createRawFetch } from "./odata";
 type BetterAuthSchema = Record<string, { fields: Record<string, DBFieldAttribute>; order: number }>;
 
 function normalizeBetterAuthFieldType(fieldType: unknown): string {
-  if (typeof fieldType === "string") return fieldType;
-  if (Array.isArray(fieldType)) return fieldType.map(String).join("|");
+  if (typeof fieldType === "string") {
+    return fieldType;
+  }
+  if (Array.isArray(fieldType)) {
+    return fieldType.map(String).join("|");
+  }
   return String(fieldType);
 }
 
@@ -106,8 +110,12 @@ export async function planMigration(
       // Normalize it to a string so our FM mapping logic remains stable.
       // Use .includes() for all checks to handle array types like ["boolean", "null"] → "boolean|null"
       const t = normalizeBetterAuthFieldType(field.type);
-      const type: "varchar" | "numeric" | "timestamp" =
-        t.includes("boolean") || t.includes("number") ? "numeric" : t.includes("date") ? "timestamp" : "varchar";
+      let type: "varchar" | "numeric" | "timestamp" = "varchar";
+      if (t.includes("boolean") || t.includes("number")) {
+        type = "numeric";
+      } else if (t.includes("date")) {
+        type = "timestamp";
+      }
       return {
         name: field.fieldName ?? key,
         type,