use experimentalRollbackInTransaction

Author: Quramy

jest.config.mjs

@@ -6,5 +6,6 @@ export default {
   setupFilesAfterEnv: [],
   testEnvironmentOptions: {
     verboseQuery: true,
+    enableExperimentalRollbackInTransaction: true,
   },
 };

src/index.test.ts

@@ -8,7 +8,9 @@ export async function ensureUser(
   }
 ): Promise<boolean> {
   try {
-    await prisma.user.create({ data });
+    await prisma.$transaction(async () => {
+      await prisma.user.create({ data });
+    });
     return true;
   } catch (err: any) {
     const uniqConstraintFailed = err.code === "P2002";
@@ -31,6 +33,10 @@ test(ensureUser.name, async () => {
   // succeed
   expect(await ensureUser(jestPrisma.client, data)).toBe(true);
 
-  // fail
+  // succeed
   expect(await jestPrisma.client.user.count()).toBe(1);
 });
+
+test("count user", async () => {
+  expect(await jestPrisma.client.user.count()).toBe(0);
+});