HackerNews MCP Server

/** * Integration Tests: get-user tool * * Tests the get-user tool with real HackerNews API calls. * Verifies correct behavior for retrieving user profiles. */ import { describe, expect, it } from "vitest"; import { getUserHandler } from "../../../src/tools/get-user.js"; describe("get-user integration", () => { describe("Known User", () => { it("should retrieve user profile by username", async () => { // Using "pg" (Paul Graham), a well-known HN user const result = await getUserHandler({ username: "pg" }); expect(result.isError).toBe(false); expect(result.content).toHaveLength(1); const content = result.content[0]; expect(content.type).toBe("text"); if (content.type === "text") { const data = JSON.parse(content.text); expect(data).toHaveProperty("username"); expect(data).toHaveProperty("karma"); expect(data.username).toBe("pg"); } }); it("should include karma score", async () => { const result = await getUserHandler({ username: "pg" }); expect(result.isError).toBe(false); const content = result.content[0]; if (content.type === "text") { const data = JSON.parse(content.text); expect(typeof data.karma).toBe("number"); expect(data.karma).toBeGreaterThan(0); } }); it("should include about field", async () => { const result = await getUserHandler({ username: "pg" }); expect(result.isError).toBe(false); const content = result.content[0]; if (content.type === "text") { const data = JSON.parse(content.text); // About field may be present or null expect(data).toHaveProperty("about"); } }); it("should include creation date", async () => { const result = await getUserHandler({ username: "pg" }); expect(result.isError).toBe(false); const content = result.content[0]; if (content.type === "text") { const data = JSON.parse(content.text); // Created field should be a Unix timestamp if (data.created) { expect(typeof data.created).toBe("number"); expect(data.created).toBeGreaterThan(0); } } }); it("should retrieve another known user (dang)", async () => { // "dang" is a HN moderator const result = await getUserHandler({ username: "dang" }); expect(result.isError).toBe(false); const content = result.content[0]; if (content.type === "text") { const data = JSON.parse(content.text); expect(data.username).toBe("dang"); expect(typeof data.karma).toBe("number"); expect(data.karma).toBeGreaterThan(0); } }); }); describe("Error Handling", () => { it("should return error for empty username", async () => { const result = await getUserHandler({ username: "" }); expect(result.isError).toBe(true); const content = result.content[0]; if (content.type === "text") { expect(content.text).toContain("username"); } }); it("should return error for missing username", async () => { const result = await getUserHandler({}); expect(result.isError).toBe(true); }); it("should return error for invalid username format (with @)", async () => { const result = await getUserHandler({ username: "user@domain" }); expect(result.isError).toBe(true); const content = result.content[0]; if (content.type === "text") { expect(content.text).toBeTruthy(); } }); it("should return error for invalid username format (with spaces)", async () => { const result = await getUserHandler({ username: "john doe" }); expect(result.isError).toBe(true); }); it("should handle non-existent user", async () => { // Using a very unlikely username const result = await getUserHandler({ username: "thisuserdoesnotexist999999", }); expect(result.isError).toBe(true); const content = result.content[0]; if (content.type === "text") { expect(content.text).toBeTruthy(); } }); }); describe("Username Validation", () => { it("should handle username with underscores", async () => { // Try to find a valid user with underscores (if exists) // For testing, we'll just verify the validation accepts it const result = await getUserHandler({ username: "test_user" }); // Result may be error (user not found) but shouldn't be validation error const content = result.content[0]; if (content.type === "text" && result.isError) { // Should not be a validation error about format expect(content.text).not.toContain("alphanumeric"); } }); it("should handle username with numbers", async () => { const result = await getUserHandler({ username: "user123" }); // Result may be error (user not found) but shouldn't be validation error const content = result.content[0]; if (content.type === "text" && result.isError) { // Should not be a validation error about format expect(content.text).not.toContain("alphanumeric"); } }); }); });