Resolve "Organiser/Filtrere funksjon etter kategori"

Closes #6 (closed)

server/src/controllers/postController/tests/postController.test.ts

+import request from "supertest";
+import app from "../../../app";
+
+describe("Test postController", () => {
+  beforeAll(async () => {
+    // kjører før testing
+    console.log("Post controller test starting...");
+  });
+
+  afterAll(async () => {
+    // kjører når all testing er gått gjennom
+    console.log("...Test ending");
+  });
+
+  it("Request /api/post should return request of 200!", async () => {
+    const result = await request(app).get("/api/post").send();
+
+    expect(result.status).toBe(200);
+  });
+
+  it('Request /api/post/1 should return data with name "test"!', async () => {
+    const result = await request(app).get("/api/post/1").send();
+
+    expect(result.status).toBe(200);
+    expect(result.body.data[0]?.title).toBe("test");
+  });
+
+  it('Request /api/post/?categoryid=1 should return datas with categoryname = "Antikviteter og Kunst"', async () => {
+    const result = await request(app).get("/api/post/1").send();
+
+    expect(result.status).toBe(200);
+    expect(result.body.data[0]?.name).toBe("Antikviteter og Kunst");
+  });
+});
+