learning_ai_invt_trdg/web/e2e/horizontal-overflow.spec.ts

import { test, expect } from '@playwright/test';

/**
 * Horizontal Overflow Tests
 * 
 * Tests that no production route has accidental horizontal overflow
 * across all viewport sizes.
 */

const routes = [
  '/',
  '/portfolio',
  '/research',
  '/plans',
  '/markets',
  '/screener',
  '/watchlist',
  '/alerts',
  '/settings',
];

test.describe('Horizontal Overflow', () => {
  routes.forEach((route) => {
    test(`Route ${route} has no horizontal overflow`, async ({ page }) => {
      await page.goto(route);
      
      // Wait for page to load
      await page.waitForLoadState('networkidle');
      
      // Check body width vs viewport width
      const metrics = await page.evaluate(() => {
        const body = document.body;
        const viewportWidth = window.innerWidth;
        const bodyWidth = body.scrollWidth;
        
        return {
          bodyWidth,
          viewportWidth,
          overflow: bodyWidth > viewportWidth,
          overflowAmount: bodyWidth - viewportWidth,
        };
      });
      
      // Allow 1px tolerance for rounding errors
      expect(metrics.overflowAmount).toBeLessThanOrEqual(1);
      
      // Check for any elements causing overflow
      const overflowElements = await page.evaluate(() => {
        const elements: Array<{ tag: string; className: string; width: number; scrollWidth: number }> = [];
        const allElements = document.querySelectorAll('*');
        
        allElements.forEach((el) => {
          const rect = el.getBoundingClientRect();
          const scrollWidth = el.scrollWidth;
          const clientWidth = el.clientWidth;
          
          if (scrollWidth > clientWidth && scrollWidth > window.innerWidth) {
            elements.push({
              tag: el.tagName,
              className: el.className,
              width: clientWidth,
              scrollWidth,
            });
          }
        });
        
        return elements;
      });
      
      expect(overflowElements.length).toBe(0);
    });
  });

  test('Critical routes at common breakpoints', async ({ page }) => {
    const breakpoints = [375, 768, 1024, 1200, 1440];
    
    for (const width of breakpoints) {
      await page.setViewportSize({ width, height: 800 });
      await page.goto('/');
      
      const overflowAmount = await page.evaluate(() => {
        return document.body.scrollWidth - window.innerWidth;
      });
      
      expect(overflowAmount).toBeLessThanOrEqual(1);
    }
  });
});