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1import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
2
3describe("loadConfig", () => {
4 const originalEnv = { ...process.env };
5
6 beforeEach(() => {
7 vi.resetModules();
8 });
9
10 afterEach(() => {
11 process.env = { ...originalEnv };
12 });
13
14 async function loadConfig() {
15 const mod = await import("../config.js");
16 return mod.loadConfig();
17 }
18
19 it("returns default port 3001 when WEB_PORT is undefined", async () => {
20 delete process.env.WEB_PORT;
21 const config = await loadConfig();
22 expect(config.port).toBe(3001);
23 });
24
25 it("parses WEB_PORT as an integer", async () => {
26 process.env.WEB_PORT = "8080";
27 const config = await loadConfig();
28 expect(config.port).toBe(8080);
29 expect(typeof config.port).toBe("number");
30 });
31
32 it("returns default appview URL when APPVIEW_URL is undefined", async () => {
33 delete process.env.APPVIEW_URL;
34 const config = await loadConfig();
35 expect(config.appviewUrl).toBe("http://localhost:3000");
36 });
37
38 it("uses provided environment variables", async () => {
39 process.env.WEB_PORT = "9000";
40 process.env.APPVIEW_URL = "https://api.atbb.space";
41 const config = await loadConfig();
42 expect(config.port).toBe(9000);
43 expect(config.appviewUrl).toBe("https://api.atbb.space");
44 });
45
46 it("returns NaN for port when WEB_PORT is empty string (?? does not catch empty strings)", async () => {
47 process.env.WEB_PORT = "";
48 const config = await loadConfig();
49 // Documents a gap: ?? only catches null/undefined, not ""
50 expect(config.port).toBeNaN();
51 });
52
53 it("returns empty string for appviewUrl when APPVIEW_URL is empty string", async () => {
54 process.env.APPVIEW_URL = "";
55 const config = await loadConfig();
56 // Documents a gap: ?? only catches null/undefined, not ""
57 expect(config.appviewUrl).toBe("");
58 });
59});