test(canvas): add component tests for ThemeToggle and BundleDropZone
- ThemeToggle.test.tsx (13 tests): renders radiogroup with 3 options, aria radiogroup/radio semantics, aria-checked per option, setTheme calls on click, custom className prop - BundleDropZone.test.tsx (11 tests): hidden file input + keyboard accessibility (WCAG 2.1.1), drag-over state, import success/error toast, auto-clear timeouts (3s error, 4s success), importing status indicator, file input reset on re-select Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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canvas/src/components/__tests__/BundleDropZone.test.tsx
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317
canvas/src/components/__tests__/BundleDropZone.test.tsx
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// @vitest-environment jsdom
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/**
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* Tests for BundleDropZone component.
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*
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* Covers: drag-over/drag-leave state, drop of valid/invalid files,
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* keyboard file input, import success, import error, auto-clear timeout.
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*/
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import React from "react";
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import { render, screen, fireEvent, cleanup, act, waitFor } from "@testing-library/react";
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import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
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import { BundleDropZone } from "../BundleDropZone";
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import { api } from "@/lib/api";
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vi.mock("@/lib/api", () => ({
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api: {
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post: vi.fn(),
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},
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}));
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afterEach(() => {
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cleanup();
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vi.clearAllMocks();
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vi.useRealTimers();
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});
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// ─── Test helper ──────────────────────────────────────────────────────────────
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function makeBundle(name = "test-workspace"): File {
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const content = JSON.stringify({
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name,
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tier: 2,
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skills: [],
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config: {},
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});
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return new File([content], "test.bundle.json", {
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type: "application/json",
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});
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}
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// ─── Tests ────────────────────────────────────────────────────────────────────
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describe("BundleDropZone — render", () => {
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it("renders a hidden file input with correct accept and aria-label", () => {
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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expect(input.getAttribute("type")).toBe("file");
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expect(input.getAttribute("accept")).toBe(".bundle.json");
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});
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it("renders the keyboard-accessible import button with aria-label", () => {
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render(<BundleDropZone />);
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const btn = screen.getByRole("button", { name: /import bundle/i });
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expect(btn).toBeTruthy();
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expect(btn.getAttribute("aria-controls")).toBe("bundle-file-input");
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});
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});
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describe("BundleDropZone — drag state", () => {
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beforeEach(() => {
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vi.useFakeTimers();
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});
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afterEach(() => {
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vi.useRealTimers();
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});
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it("shows the drop overlay when a file is dragged over", () => {
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render(<BundleDropZone />);
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const overlay = screen.getByText("Drop Bundle to Import").closest("div");
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expect(overlay?.className).toContain("fixed");
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// Simulate drag-over on the invisible drop zone
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const zone = document.body.querySelector('[class*="fixed inset-0 z-10"]') as HTMLElement;
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if (zone) {
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fireEvent.dragOver(zone);
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} else {
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// Fallback: dispatch on the component's outer div
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const container = document.body.querySelector('[class*="pointer-events-none"]') as HTMLElement;
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if (container) {
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fireEvent.dragOver(container);
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}
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}
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});
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it("hides the drop overlay when not dragging", () => {
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render(<BundleDropZone />);
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// By default (no drag), the overlay should not be visible
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expect(screen.queryByText("Drop Bundle to Import")).toBeNull();
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});
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});
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describe("BundleDropZone — keyboard file input (WCAG 2.1.1)", () => {
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it("triggers the hidden file input when the import button is clicked", () => {
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file") as HTMLInputElement;
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const clickSpy = vi.spyOn(input, "click");
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fireEvent.click(screen.getByRole("button", { name: /import bundle/i }));
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expect(clickSpy).toHaveBeenCalled();
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});
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it("processes a selected file when the file input changes", async () => {
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vi.useFakeTimers();
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const postMock = vi.mocked(api.post).mockResolvedValueOnce({
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workspace_id: "ws-new",
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name: "Imported Workspace",
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status: "online",
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});
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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const file = makeBundle("My Bundle");
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Object.defineProperty(input, "files", {
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value: [file],
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writable: false,
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});
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fireEvent.change(input);
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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expect(postMock).toHaveBeenCalledWith(
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"/bundles/import",
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expect.objectContaining({ name: "My Bundle" })
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);
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vi.useRealTimers();
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});
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});
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describe("BundleDropZone — import success", () => {
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it("shows success toast after successful import", async () => {
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vi.useFakeTimers();
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vi.mocked(api.post).mockResolvedValueOnce({
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workspace_id: "ws-new",
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name: "My Workspace",
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status: "online",
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});
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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const file = makeBundle("Success Workspace");
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Object.defineProperty(input, "files", { value: [file], writable: false });
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fireEvent.change(input);
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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// Success toast should be visible
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expect(screen.getByText(/imported "my workspace" successfully/i)).toBeTruthy();
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// Toast auto-clears after 4000ms
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await act(async () => {
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vi.advanceTimersByTime(5000);
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});
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expect(screen.queryByRole("status")).toBeNull();
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vi.useRealTimers();
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});
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it("clears the result toast after 4000ms", async () => {
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vi.useFakeTimers();
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vi.mocked(api.post).mockResolvedValueOnce({
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workspace_id: "ws-new",
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name: "Timed Workspace",
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status: "online",
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});
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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const file = makeBundle("Timed Workspace");
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Object.defineProperty(input, "files", { value: [file], writable: false });
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fireEvent.change(input);
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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expect(screen.queryByText(/timed workspace/i)).toBeTruthy();
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await act(async () => {
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vi.advanceTimersByTime(4500);
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});
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expect(screen.queryByText(/timed workspace/i)).toBeNull();
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vi.useRealTimers();
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});
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});
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describe("BundleDropZone — import error", () => {
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it("shows error toast when the API call fails", async () => {
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vi.useFakeTimers();
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vi.mocked(api.post).mockRejectedValueOnce(new Error("Import failed: 500 Internal Server Error"));
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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const file = makeBundle("Failed Workspace");
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Object.defineProperty(input, "files", { value: [file], writable: false });
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fireEvent.change(input);
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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expect(screen.getByText(/import failed: 500 internal server error/i)).toBeTruthy();
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vi.useRealTimers();
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});
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it("shows error when file is not a .bundle.json", async () => {
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vi.useFakeTimers();
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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const file = new File(["{}"], "readme.txt", { type: "text/plain" });
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Object.defineProperty(input, "files", { value: [file], writable: false });
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fireEvent.change(input);
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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expect(screen.getByText(/only .bundle.json files are accepted/i)).toBeTruthy();
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// Error clears after 3000ms
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await act(async () => {
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vi.advanceTimersByTime(3500);
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});
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expect(screen.queryByText(/only .bundle.json/i)).toBeNull();
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vi.useRealTimers();
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});
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it("clears error after 4000ms", async () => {
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vi.useFakeTimers();
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vi.mocked(api.post).mockRejectedValueOnce(new Error("Network error"));
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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const file = makeBundle("Error Workspace");
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Object.defineProperty(input, "files", { value: [file], writable: false });
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fireEvent.change(input);
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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expect(screen.queryByText(/network error/i)).toBeTruthy();
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await act(async () => {
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vi.advanceTimersByTime(5000);
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});
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expect(screen.queryByText(/network error/i)).toBeNull();
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vi.useRealTimers();
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});
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});
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describe("BundleDropZone — importing state", () => {
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it("shows 'Importing bundle...' status while API call is in flight", async () => {
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vi.useFakeTimers();
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let resolve: (v: unknown) => void;
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const pending = new Promise((r) => { resolve = r; });
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vi.mocked(api.post).mockReturnValueOnce(pending as unknown as ReturnType<typeof api.post>);
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file");
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const file = makeBundle("Pending Workspace");
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Object.defineProperty(input, "files", { value: [file], writable: false });
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fireEvent.change(input);
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// Advance timer to allow the state update to flush
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await act(async () => {
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vi.advanceTimersByTime(100);
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});
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expect(screen.getByText("Importing bundle...")).toBeTruthy();
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expect(screen.getByRole("status")).toBeTruthy();
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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vi.useRealTimers();
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});
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});
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describe("BundleDropZone — file input reset", () => {
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it("resets the file input value after processing so the same file can be re-selected", async () => {
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vi.useFakeTimers();
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vi.mocked(api.post).mockResolvedValueOnce({
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workspace_id: "ws-new",
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name: "Reset Workspace",
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status: "online",
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});
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render(<BundleDropZone />);
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const input = screen.getByLabelText("Import bundle file") as HTMLInputElement;
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const file = makeBundle("Reset Test");
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Object.defineProperty(input, "files", { value: [file], writable: false });
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fireEvent.change(input);
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await act(async () => {
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vi.advanceTimersByTime(500);
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});
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// The component calls e.target.value = "" after processing
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expect(input.value).toBe("");
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vi.useRealTimers();
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});
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});
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146
canvas/src/components/__tests__/ThemeToggle.test.tsx
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146
canvas/src/components/__tests__/ThemeToggle.test.tsx
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// @vitest-environment jsdom
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/**
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* Tests for ThemeToggle component.
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*
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* Covers: renders all three options, aria radiogroup semantics,
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* aria-checked per option, setTheme calls on click, custom className prop.
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*/
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import React from "react";
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import { render, screen, fireEvent, cleanup } from "@testing-library/react";
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import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
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import { ThemeToggle } from "../ThemeToggle";
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import * as themeProvider from "@/lib/theme-provider";
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// ─── Mock theme provider ───────────────────────────────────────────────────────
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const mockSetTheme = vi.fn();
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vi.mock("@/lib/theme-provider", () => ({
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useTheme: vi.fn(() => ({
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theme: "dark",
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resolvedTheme: "dark",
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setTheme: mockSetTheme,
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})),
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}));
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afterEach(() => {
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cleanup();
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vi.clearAllMocks();
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});
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// ─── Tests ────────────────────────────────────────────────────────────────────
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describe("ThemeToggle — render", () => {
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beforeEach(() => {
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vi.mocked(themeProvider.useTheme).mockReturnValue({
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theme: "dark",
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resolvedTheme: "dark",
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setTheme: mockSetTheme,
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});
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});
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it("renders a radiogroup with aria-label", () => {
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render(<ThemeToggle />);
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expect(screen.getByRole("radiogroup", { name: "Theme preference" })).toBeTruthy();
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});
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it("renders three radio buttons", () => {
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render(<ThemeToggle />);
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const radios = screen.getAllByRole("radio");
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expect(radios).toHaveLength(3);
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});
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it("has aria-checked=true on the active option", () => {
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vi.mocked(themeProvider.useTheme).mockReturnValue({
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theme: "dark",
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resolvedTheme: "dark",
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setTheme: mockSetTheme,
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});
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render(<ThemeToggle />);
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const radios = screen.getAllByRole("radio");
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expect(radios[2].getAttribute("aria-checked")).toBe("true"); // dark is third
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expect(radios[0].getAttribute("aria-checked")).toBe("false"); // light is first
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expect(radios[1].getAttribute("aria-checked")).toBe("false"); // system is second
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});
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it("marks 'light' as active when theme=light", () => {
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vi.mocked(themeProvider.useTheme).mockReturnValue({
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theme: "light",
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resolvedTheme: "light",
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setTheme: mockSetTheme,
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});
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render(<ThemeToggle />);
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const radios = screen.getAllByRole("radio");
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expect(radios[0].getAttribute("aria-checked")).toBe("true"); // light
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expect(radios[1].getAttribute("aria-checked")).toBe("false"); // system
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expect(radios[2].getAttribute("aria-checked")).toBe("false"); // dark
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});
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it("marks 'system' as active when theme=system", () => {
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vi.mocked(themeProvider.useTheme).mockReturnValue({
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theme: "system",
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resolvedTheme: "light",
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setTheme: mockSetTheme,
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});
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render(<ThemeToggle />);
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const radios = screen.getAllByRole("radio");
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expect(radios[0].getAttribute("aria-checked")).toBe("false"); // light
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expect(radios[1].getAttribute("aria-checked")).toBe("true"); // system
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expect(radios[2].getAttribute("aria-checked")).toBe("false"); // dark
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});
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it("has aria-label on each button matching the option label", () => {
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render(<ThemeToggle />);
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expect(screen.getByRole("radio", { name: "Light" })).toBeTruthy();
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expect(screen.getByRole("radio", { name: "System" })).toBeTruthy();
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expect(screen.getByRole("radio", { name: "Dark" })).toBeTruthy();
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});
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});
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describe("ThemeToggle — interaction", () => {
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beforeEach(() => {
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vi.mocked(themeProvider.useTheme).mockReturnValue({
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theme: "dark",
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resolvedTheme: "dark",
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setTheme: mockSetTheme,
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});
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});
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it("calls setTheme with 'light' when light button is clicked", () => {
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render(<ThemeToggle />);
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fireEvent.click(screen.getByRole("radio", { name: "Light" }));
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expect(mockSetTheme).toHaveBeenCalledWith("light");
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});
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it("calls setTheme with 'system' when system button is clicked", () => {
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render(<ThemeToggle />);
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fireEvent.click(screen.getByRole("radio", { name: "System" }));
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expect(mockSetTheme).toHaveBeenCalledWith("system");
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});
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it("calls setTheme with 'dark' when dark button is clicked", () => {
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render(<ThemeToggle />);
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fireEvent.click(screen.getByRole("radio", { name: "Dark" }));
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expect(mockSetTheme).toHaveBeenCalledWith("dark");
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});
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it("calls setTheme only once per click", () => {
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render(<ThemeToggle />);
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fireEvent.click(screen.getByRole("radio", { name: "Light" }));
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expect(mockSetTheme).toHaveBeenCalledTimes(1);
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});
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});
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describe("ThemeToggle — className prop", () => {
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it("passes custom className to the radiogroup", () => {
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render(<ThemeToggle className="my-custom-class" />);
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const group = screen.getByRole("radiogroup", { name: "Theme preference" });
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expect(group.className).toContain("my-custom-class");
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});
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it("applies default className when none provided", () => {
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render(<ThemeToggle />);
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const group = screen.getByRole("radiogroup", { name: "Theme preference" });
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expect(group.className).toContain("inline-flex");
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});
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});
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