Add tests for custom error classes

src/errors.test.ts

@@ -0,0 +1,32 @@
+import { ApiError, ValidationError, NetworkError } from "./errors";
+
+describe("Custom Error Class Tests", () => {
+    test("ApiError should store message, statusCode and responseBody", () => {
+        const error = new ApiError("API Request failed", 404, "Not Found");
+
+        expect(error).toBeInstanceOf(ApiError);
+        expect(error).toBeInstanceOf(Error);
+        expect(error.name).toBe("ApiError");
+        expect(error.message).toBe("API Request failed");
+        expect(error.statusCode).toBe(404);
+        expect(error.responseBody).toBe("Not Found");
+    })
+
+    test("ValidationError should store message", () => {
+        const error = new ValidationError("Invalid input");
+
+        expect(error).toBeInstanceOf(ValidationError);
+        expect(error).toBeInstanceOf(Error);
+        expect(error.name).toBe("ValidationError");
+        expect(error.message).toBe("Invalid input");
+    })
+
+    test("NetworkError should store message", () => {
+        const error = new NetworkError("Network Unreachable");
+
+        expect(error).toBeInstanceOf(NetworkError);
+        expect(error).toBeInstanceOf(Error);
+        expect(error.name).toBe("NetworkError");
+        expect(error.message).toBe("Network Unreachable");
+    })
+})