93 lines
2.2 KiB
TypeScript
93 lines
2.2 KiB
TypeScript
import { describe, it, expect, vi, beforeEach, afterEach } from "vitest";
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describe("API client", () => {
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const originalFetch = global.fetch;
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beforeEach(() => {
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vi.resetModules();
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});
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afterEach(() => {
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global.fetch = originalFetch;
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});
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it("getQuestions builds correct query string with filters", async () => {
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let capturedUrl = "";
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global.fetch = vi.fn().mockImplementation((url: string) => {
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capturedUrl = url;
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return Promise.resolve({
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ok: true,
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json: () =>
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Promise.resolve({
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items: [],
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total: 0,
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page: 1,
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limit: 20,
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pages: 0,
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}),
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});
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});
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const { getQuestions } = await import("./api");
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await getQuestions({ page: 2, difficulty: "easy", category: "arrays" });
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expect(capturedUrl).toContain("page=2");
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expect(capturedUrl).toContain("difficulty=easy");
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expect(capturedUrl).toContain("category=arrays");
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});
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it("getQuestions omits empty filters", async () => {
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let capturedUrl = "";
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global.fetch = vi.fn().mockImplementation((url: string) => {
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capturedUrl = url;
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return Promise.resolve({
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ok: true,
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json: () =>
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Promise.resolve({
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items: [],
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total: 0,
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page: 1,
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limit: 20,
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pages: 0,
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}),
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});
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});
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const { getQuestions } = await import("./api");
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await getQuestions({});
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expect(capturedUrl).not.toContain("?");
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});
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it("throws error on non-ok response", async () => {
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global.fetch = vi.fn().mockResolvedValue({
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ok: false,
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status: 404,
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statusText: "Not Found",
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});
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const { getQuestion } = await import("./api");
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await expect(getQuestion("nonexistent")).rejects.toThrow("API error: 404");
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});
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it("getStats returns stats data", async () => {
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const mockStats = {
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total_questions: 10,
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by_difficulty: { easy: 3, medium: 5, hard: 2 },
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by_category: [],
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by_pattern: [],
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};
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global.fetch = vi.fn().mockResolvedValue({
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ok: true,
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json: () => Promise.resolve(mockStats),
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});
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const { getStats } = await import("./api");
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const result = await getStats();
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expect(result).toEqual(mockStats);
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});
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});
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