added tests for POST, fixed tests for GET

tests/app.test.ts

@@ -1,22 +1,51 @@
-import { describe, expect, it } from "bun:test";
+import { beforeAll, describe, expect, it } from "bun:test";
 import request from "supertest";
 import { app } from "../src";
 
-describe("GET /images works properly", () => {
-    it("should be an array", async () => {
+describe("GET /images works properly", async () => {
     const res = await request(app).get("/images");
+
+    it("should be an array", async () => {
         expect(Array.isArray(res.body)).toBeTrue();
+    });
+
+    it("should return a 200", async () => {
         expect(res.statusCode).toBe(200);
     });
 });
 
 describe("POST /images works properly", () => {
-    it("should return 201 or 409", async () => {
+    it("should return 201 for new image", async () => {
         const res = await request(app).post("/images").send({
-            url: "https://test.url.com/123",
+            url: "https://test.url.com/1",
             status: "available",
             tags: ["2girls", "touhou"]
         });
-        expect(res.status).toSatisfy(status => [201, 409].includes(status));
+        expect(res.status).toSatisfy(status => [201].includes(status));
+    });
+
+    it("should return 409 for a repeated images", async () => {
+        await request(app).post("/images").send({
+            url: "https://test.url.com/2",
+            status: "available",
+            tags: ["2girls", "touhou"]
+        });
+
+        const res = await request(app).post("/images").send({
+            url: "https://test.url.com/2",
+            status: "available",
+            tags: ["2girls", "touhou"]
+        });
+
+        expect(res.status).toSatisfy(status => [409].includes(status));
+    });
+
+    it("should return 400 for malformed requests", async () => {
+        const res = await request(app).post("/images").send({
+            url: "https://test.url.com/3",
+            status: "wrong",
+            tags: ["2girls", "touhou"]
+        });
+        expect(res.status).toSatisfy(status => [400].includes(status));
     });
 });