diff --git a/apps/api/pages/api/slots/_get.test.ts b/apps/api/pages/api/slots/_get.test.ts
new file mode 100644
index 0000000000..58e77fe290
--- /dev/null
+++ b/apps/api/pages/api/slots/_get.test.ts
@@ -0,0 +1,98 @@
+import prismock from "../../../../../tests/libs/__mocks__/prisma";
+
+import type { Request, Response } from "express";
+import type { NextApiRequest, NextApiResponse } from "next";
+import { createMocks } from "node-mocks-http";
+import { describe, expect, test } from "vitest";
+
+import dayjs from "@calcom/dayjs";
+
+import handler from "./_get";
+
+type CustomNextApiRequest = NextApiRequest & Request;
+type CustomNextApiResponse = NextApiResponse & Response;
+
+function buildMockData() {
+  prismock.user.create({
+    data: {
+      id: 1,
+      username: "test",
+      name: "Test User",
+      email: "test@example.com",
+    },
+  });
+  prismock.eventType.create({
+    data: {
+      id: 1,
+      slug: "test",
+      length: 30,
+      title: "Test Event Type",
+      userId: 1,
+    },
+  });
+}
+
+describe("GET /api/slots", () => {
+  describe("Errors", () => {
+    test("Missing required data", async () => {
+      const { req, res } = createMocks<CustomNextApiRequest, CustomNextApiResponse>({
+        method: "GET",
+      });
+
+      await handler(req, res);
+
+      expect(res.statusCode).toBe(400);
+      expect(JSON.parse(res._getData())).toMatchInlineSnapshot(`
+        {
+          "message": "invalid_type in 'startTime': Required; invalid_type in 'endTime': Required",
+        }
+      `);
+    });
+  });
+
+  describe("Success", () => {
+    describe("Regular event-type", () => {
+      test("Returns and event type available slots", async () => {
+        const { req, res } = createMocks<CustomNextApiRequest, CustomNextApiResponse>({
+          method: "GET",
+          query: {
+            eventTypeId: 1,
+            startTime: dayjs().format(),
+            endTime: dayjs().add(1, "day").format(),
+            usernameList: "test",
+          },
+          prisma: prismock,
+        });
+        buildMockData();
+        await handler(req, res);
+        console.log({ statusCode: res._getStatusCode(), data: JSON.parse(res._getData()) });
+        expect(JSON.parse(res._getData())).toMatchInlineSnapshot(`
+          {
+            "slots": {},
+          }
+        `);
+      });
+      test("Returns and event type available slots with passed timeZone", async () => {
+        const { req, res } = createMocks<CustomNextApiRequest, CustomNextApiResponse>({
+          method: "GET",
+          query: {
+            eventTypeId: 1,
+            startTime: dayjs().format(),
+            endTime: dayjs().add(1, "day").format(),
+            usernameList: "test",
+            timeZone: "UTC",
+          },
+          prisma: prismock,
+        });
+        buildMockData();
+        await handler(req, res);
+        console.log({ statusCode: res._getStatusCode(), data: JSON.parse(res._getData()) });
+        expect(JSON.parse(res._getData())).toMatchInlineSnapshot(`
+          {
+            "slots": {},
+          }
+        `);
+      });
+    });
+  });
+});
diff --git a/tests/libs/__mocks__/prisma.ts b/tests/libs/__mocks__/prisma.ts
index 1f508e1ef4..7d2b9b34c5 100644
--- a/tests/libs/__mocks__/prisma.ts
+++ b/tests/libs/__mocks__/prisma.ts
@@ -7,6 +7,7 @@ import * as selects from "@calcom/prisma/selects";
 vi.mock("@calcom/prisma", () => ({
   default: prisma,
   prisma,
+  readonlyPrisma: prisma,
   ...selects,
 }));