Blame for browser_test.py

import json,re
from playwright.sync_api import sync_playwright
from pathlib import Path
folder=Path(__file__).parent
def bundled_html():
 html=(folder/'index.html').read_text()
 css=(folder/'style.css').read_text()
 scripts=[]
 for nm in ('core.js','worldbank.js','demo-data.js','app.js'):
  body=(folder/nm).read_text()
  body=re.sub(r'^import [^\n]+\n','',body,flags=re.MULTILINE)
  body=re.sub(r'\bexport (?!\{)', '',body)
  scripts.append(body)
 html=html.replace('<link rel="stylesheet" href="style.css"/>','<style>'+css+'</style>')
 html=html.replace('<script type="module" src="app.js"></script>','<script>'+'\n'.join(scripts)+'</script>')
 return html
html=bundled_html()
checks=[];errors=[]
def ok(name,condition=True):
 if not condition:raise AssertionError(name)
 checks.append('PASS: '+name)
with sync_playwright() as p:
 browser=p.chromium.launch(headless=True,executable_path='/usr/bin/chromium',args=['--no-sandbox','--disable-dev-shm-usage'])
 context=browser.new_context(accept_downloads=True,viewport={'width':1440,'height':1100},device_scale_factor=1)
 page=context.new_page();page.on('pageerror',lambda e:errors.append(str(e)))
 page.set_content(html,wait_until='load');page.wait_for_timeout(700)
 ok('Demo badge initially visible',page.locator('#mode-pill').inner_text()=='SYNTHETIC DEMO')
 ok('Synthetic data populated',int(page.locator('#metric-obs').inner_text().replace(',',''))>0)
 ok('Overview shows country ranking',page.locator('#rank-bars .rank-row').count()==6)
 page.screenshot(path=str(folder/'Education_Data_Lab_DESKTOP_PREVIEW.png'),full_page=True)
 for tab,selector in [('trends','#line-chart svg'),('gaps','#gap-result'),('relations','#scatter-chart svg'),('quality','#coverage-matrix table'),('brief','#brief-text h3')]:
  page.locator(f'button[data-view="{tab}"]').click()
  ok('Tab '+tab+' updates content',page.locator(selector).count()>0)
 page.locator('button[data-view="trends"]').click();ok('Line series has paths',page.locator('#line-chart svg line').count()>5)
 page.locator('button[data-view="gaps"]').click();page.locator('#gap-year').fill('2020');page.locator('#gap-year').dispatch_event('change');ok('Exact-year gap computed',page.locator('#gap-result .numberline').count()==1)
 page.locator('button[data-view="brief"]').click()
 with page.expect_download() as d:page.locator('#export-md').click()
 ok('Markdown report exported',d.value.suggested_filename.endswith('.md'))
 with page.expect_download() as d:page.locator('#export-json').click()
 path=d.value.path();data=json.loads(Path(path).read_text())
 ok('Reproducible JSON includes rows',len(data['rows'])>0 and data['format']=='edlab-session-v1')
 with page.expect_download() as d:page.locator('#download-csv').click()
 ok('CSV dataset exported',d.value.suggested_filename.endswith('.csv'))
 # import prior session
 page.locator('#import-file').set_input_files({'name':'session.json','mimeType':'application/json','buffer':json.dumps(data).encode()})
 ok('Session import acknowledged',page.locator('#mode-pill').inner_text()=='IMPORTED DATA')
 # live mocked data via route; test code's API parsing and mode, not actual live endpoint
 from urllib.parse import urlparse
 def route_handler(route):
  rows=[]
  for country in ['ARG','BOL','BRA','CHL','COL','PRY']:
   for ind in ['SE.PRM.CMPT.ZS','SE.SEC.ENRR','SE.TER.ENRR','SE.XPD.TOTL.GD.ZS','SE.ADT.LITR.ZS','IT.NET.USER.ZS','NY.GDP.PCAP.CD','SP.POP.TOTL']:
    for year in range(2010,2026):
     rows.append({'countryiso3code':country,'date':str(year),'indicator':{'id':ind},'value':float(60+(year-2010)+(len(country)+len(ind))%10),'footnote':[]})
  route.fulfill(status=200,content_type='application/json',body=json.dumps([{'pages':1,'per_page':20000,'total':len(rows)},rows]))
 page.route('https://api.worldbank.org/**',route_handler)
 page.locator('#load-live').click();page.wait_for_timeout(300)
 ok('Mock World Bank response processed',page.locator('#mode-pill').inner_text()=='WORLD BANK LIVE')
 ok('Official mode displays source attribution', 'World Bank' in page.locator('#status-title').inner_text())
 # Error route should preserve most recent data
 page.unroute('https://api.worldbank.org/**')
 page.route('https://api.worldbank.org/**',lambda route:route.fulfill(status=500,body='error'))
 page.locator('#load-live').click();page.wait_for_timeout(300)
 ok('Fetch error visible and prior data retained', 'could not be loaded' in page.locator('#alert').inner_text() and page.locator('#mode-pill').inner_text()=='WORLD BANK LIVE')
 mobile=browser.new_context(viewport={'width':390,'height':844},device_scale_factor=1,accept_downloads=True,is_mobile=True,has_touch=True)
 pg=mobile.new_page();pg.on('pageerror',lambda e:errors.append(str(e)));pg.set_content(html,wait_until='load');pg.wait_for_timeout(400)
 pg.screenshot(path=str(folder/'Education_Data_Lab_MOBILE_PREVIEW.png'),full_page=True)
 ok('Mobile responsive without horizontal overflow',pg.evaluate('document.documentElement.scrollWidth <= innerWidth + 2'))
 ok('No JavaScript page errors',len(errors)==0)
 browser.close()
print('\n'.join(checks));print(f'RESULT: {len(checks)} browser checks passed; JS errors: {errors}')