wip: bun test improvements

packages/opencode/test/fixture/fixture.ts

@@ -0,0 +1,24 @@
+import { $ } from "bun"
+import os from "os"
+import path from "path"
+
+type TmpDirOptions<Init extends Record<string, any>> = {
+  git?: boolean
+  init?: (dir: string) => Promise<Init>
+  dispose?: (dir: string) => Promise<void>
+}
+export async function tmpdir<Init extends Record<string, any>>(options?: TmpDirOptions<Init>) {
+  const dirpath = path.join(os.tmpdir(), "opencode-test-" + Math.random().toString(36).slice(2))
+  await $`mkdir -p ${dirpath}`.quiet()
+  if (options?.git) await $`git init`.cwd(dirpath).quiet()
+  const extra = await options?.init?.(dirpath)
+  const result = {
+    [Symbol.asyncDispose]: async () => {
+      await options?.dispose?.(dirpath)
+      await $`rm -rf ${dirpath}`.quiet()
+    },
+    path: dirpath,
+    extra: extra as Init,
+  }
+  return result
+}