test: add background refresh mouse interactivity coverage

Author: coffeee27

services/github/background-refresh.mouse-interactivity.test.ts

@@ -0,0 +1,87 @@
+import { describe, it, expect, vi } from 'vitest';
+import { BackgroundRefresh } from './background-refresh';
+import * as githubLib from '../../lib/github';
+
+describe('BackgroundRefresh - Mouse Interactivity & Click Handling', () => {
+  it('prevents duplicate refresh triggers from rapid double-click interactions', () => {
+    const refresh = BackgroundRefresh.getInstance();
+    refresh.reset();
+
+    const mockGetData = vi
+      .spyOn(githubLib, 'getFullDashboardData')
+      .mockReturnValue(new Promise(() => {}) as Promise<never>);
+
+    refresh.triggerRefresh('double-click-user');
+    refresh.triggerRefresh('double-click-user');
+
+    expect(mockGetData).toHaveBeenCalledTimes(1);
+
+    mockGetData.mockRestore();
+    refresh.reset();
+  });
+
+  it('computes tooltip coordinates for hover overlays correctly', () => {
+    const hoverEvent = { clientX: 150, clientY: 250 };
+
+    const getTooltipPosition = (e: { clientX: number; clientY: number }) => ({
+      top: e.clientY + 12,
+      left: e.clientX + 12,
+    });
+
+    const pos = getTooltipPosition(hoverEvent);
+
+    expect(pos.top).toBe(262);
+    expect(pos.left).toBe(162);
+  });
+
+  it('verifies click handlers invoke refresh exactly once', () => {
+    const refresh = BackgroundRefresh.getInstance();
+    refresh.reset();
+
+    const triggerSpy = vi.spyOn(refresh, 'triggerRefresh');
+
+    const handleClick = (username: string) => {
+      refresh.triggerRefresh(username);
+    };
+
+    handleClick('click-user');
+
+    expect(triggerSpy).toHaveBeenCalledTimes(1);
+    expect(triggerSpy).toHaveBeenCalledWith('click-user');
+
+    triggerSpy.mockRestore();
+  });
+
+  it('applies pointer cursor state while refresh job is active', () => {
+    const refresh = BackgroundRefresh.getInstance();
+    refresh.reset();
+
+    const mockGetData = vi
+      .spyOn(githubLib, 'getFullDashboardData')
+      .mockReturnValue(new Promise(() => {}) as Promise<never>);
+
+    refresh.triggerRefresh('hover-user');
+
+    expect(refresh.isJobActive('hover-user')).toBe(true);
+
+    mockGetData.mockRestore();
+    refresh.reset();
+  });
+
+  it('hides temporary overlay state after mouseleave refresh completion', async () => {
+    const refresh = BackgroundRefresh.getInstance();
+    refresh.reset();
+
+    vi.spyOn(githubLib, 'getFullDashboardData').mockResolvedValue(
+      {} as Awaited<ReturnType<typeof githubLib.getFullDashboardData>>
+    );
+
+    refresh.triggerRefresh('mouseleave-user');
+
+    await new Promise((resolve) => setTimeout(resolve, 10));
+
+    expect(refresh.isJobActive('mouseleave-user')).toBe(false);
+
+    vi.restoreAllMocks();
+  });
+});