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Optional, like the other browser tests: pip install playwright && playwright install chromium."""
import json
import re
import socket
import threading
import time
from datetime import date, datetime, timedelta, timezone
import pytest
import uvicorn
from app.main import create_app
playwright = pytest.importorskip("playwright.sync_api")
KEY = "mathly.progress.v1:guest"
@pytest.fixture(scope="module")
def server():
app = create_app()
with socket.socket() as sock:
sock.bind(("127.0.0.1", 0))
srv = uvicorn.Server(uvicorn.Config(app, log_level="error"))
thread = threading.Thread(target=srv.run, kwargs={"sockets": [sock]}, daemon=True)
thread.start()
try:
deadline = time.monotonic() + 5
while not srv.started:
assert thread.is_alive() and time.monotonic() < deadline
time.sleep(.01)
yield f"http://127.0.0.1:{sock.getsockname()[1]}"
finally:
srv.should_exit = True
thread.join(timeout=5)
@pytest.fixture(scope="module")
def browser():
with playwright.sync_playwright() as p:
b = p.chromium.launch()
yield b
b.close()
def page_with(browser, server, progress=None, no_chance=False, now=None):
ctx = browser.new_context(viewport={"width": 390, "height": 844})
if no_chance: # no comet by chance: only the sure ones come
ctx.add_init_script("Math.random=()=>0.99")
ctx.route("https://cdn.jsdelivr.net/**", lambda route: route.abort())
ctx.route("https://fonts.googleapis.com/**", lambda route: route.abort())
ctx.add_init_script("try{localStorage.setItem('mathly.sound','off')}catch{}")
if progress is not None:
ctx.add_init_script(f"localStorage.setItem({json.dumps(KEY)},{json.dumps(json.dumps(progress))})")
page = ctx.new_page()
if now: # the date the page sees; timers run as usual
page.clock.set_fixed_time(now)
errors = []
page.on("pageerror", lambda e: errors.append(str(e)))
page.goto(server)
page.locator('.mx-nav [data-view="path"]').click() # the app opens on home; the trail is on the path tab
playwright.expect(page.locator(".mx-trail")).to_be_visible()
return page, errors
def progress_of(page):
return page.evaluate(f"JSON.parse(localStorage.getItem({json.dumps(KEY)})||'{{}}')")
def answer_skill_right(page):
"""Answers the open skill's questions right at the first try, until a celebration shows."""
for _ in range(20):
if page.locator(".sky-cele").count():
return
page.locator(".mx-choices button[data-right]").first.click()
page.wait_for_timeout(150)
if page.locator(".sky-cele").count():
return
page.locator(".mx-ok button[data-id]").first.click()
raise AssertionError("no celebration")
def test_clean_run_turns_the_next_star_gold(browser, server):
page, errors = page_with(browser, server)
nxt = page.locator(".mx-star.st-next").get_attribute("data-id")
page.locator(".mx-star.st-next").click()
answer_skill_right(page)
playwright.expect(page.locator(".sky-cele h2").first).to_have_text("כוכב זהב!")
while page.locator(".sky-cele [data-sky=go]").count():
page.locator(".sky-cele [data-sky=go]").first.click()
p = progress_of(page)
assert p["done"][nxt] and p["gold"][nxt]
assert p["days"][date.today().isoformat()] >= 5
page.locator(".mx-x").click()
page.locator('.mx-nav [data-view="path"]').click()
playwright.expect(page.locator(f'.mx-star[data-id="{nxt}"]')).to_have_class("mx-node mx-star st-gold")
playwright.expect(page.locator(".sky-chip.flame b")).to_have_text("1") # today's goal is met
assert not errors
def test_a_faded_star_comes_first_and_one_answer_brightens_it(browser, server):
old = (datetime.now(timezone.utc) - timedelta(days=20)).isoformat()
page, errors = page_with(browser, server, {"done": {"t_ext": old}, "seen": {"t_ext": old}, "solved": {"t_ext": list(range(10))}})
playwright.expect(page.locator('.mx-star[data-id="t_ext"]')).to_have_class("mx-node mx-star st-fading")
page.locator('.mx-star[data-id="t_ext"]').click()
page.locator(".mx-choices button[data-right]").first.click()
playwright.expect(page.locator(".sky-toast", has_text="זורח שוב")).to_be_visible()
page.locator(".mx-x").click()
playwright.expect(page.locator('.mx-star[data-id="t_ext"]')).to_have_class("mx-node mx-star st-lit")
assert not errors
def test_streak_forgives_one_missed_day_not_two(browser, server):
day = lambda n: (date.today() - timedelta(days=n)).isoformat()
page, _ = page_with(browser, server, {"days": {day(1): 5, day(3): 6, day(4): 5, day(7): 5}})
playwright.expect(page.locator(".sky-chip.flame b")).to_have_text("3") # 1, 3, 4; days 5 and 6 both missed
page.locator(".mx-hud .sky-chip.flame").click() # the streak calendar
sheet = page.locator(".mx-streak-sheet")
playwright.expect(sheet.locator(".mx-shero b")).to_have_text("3")
playwright.expect(sheet.locator(".mx-sstats b").first).to_have_text("3") # the longest streak
met = saved = 0
for _ in range(2): # the last week can start in the month before
met += sheet.locator(".mx-cday.s-met").count()
saved += sheet.locator(".mx-cday.s-saved").count()
prev = sheet.locator("[data-act=cal-prev]")
if prev.is_disabled():
break
prev.click()
assert (met, saved) == (4, 1) # day 2 is forgiven; days 5 and 6 are not
def test_a_caught_comet_joins_the_collection(browser, server):
page, errors = page_with(browser, server, no_chance=True)
page.locator(".mx-star.st-next").click()
answer_skill_right(page) # the first gold star of all brings a comet
while page.locator(".sky-cele [data-sky=go]").count():
page.locator(".sky-cele [data-sky=go]").first.click()
comet = page.locator(".sky-comet")
playwright.expect(comet).to_have_count(1, timeout=3000)
comet.dispatch_event("click") # it never stands still for a normal click
playwright.expect(page.locator(".sky-cele h2")).to_have_text("תפסתם שביט נדיר!")
page.locator(".sky-cele [data-sky=go]").click()
assert len(progress_of(page)["comets"]) == 1
page.locator(".mx-x").click()
page.locator('.mx-nav [data-view="sky"]').click()
playwright.expect(page.locator(".mx-comet.have")).to_have_count(1)
assert not errors
def test_home_shows_the_tally_on_top_and_opens_at_the_next_skill(browser, server):
done = {i: "2026-01-01T00:00:00+00:00" for i in ["t_ext"]}
page, errors = page_with(browser, server, {"done": done, "solved": {"t_ext": list(range(10))}})
playwright.expect(page.locator(".mx-hud .sky-chip.stars b")).to_have_text("1")
playwright.expect(page.locator(".mx-hud .sky-chip.flame")).to_be_visible()
playwright.expect(page.locator(".mx-nav button")).to_have_count(3) # home, path, collection
nxt = page.locator(".mx-star.st-next")
playwright.expect(nxt).to_be_in_viewport()
page.evaluate("document.getElementById('mathView').scrollTo(0, 99999)") # the tally stays on top while scrolling
playwright.expect(page.locator(".mx-hud")).to_be_in_viewport()
page.locator(".mx-daily").click()
playwright.expect(page.locator(".mx-streak-sheet .mx-cday.today")).to_have_count(1)
assert not errors
def test_a_mistake_is_quiet_hides_the_answer_and_needs_a_clean_run_to_finish(browser, server):
page, errors = page_with(browser, server, no_chance=True)
page.locator('.mx-star[data-id="t_ext"]').click()
for _ in range(9): # questions 1-9 right
page.locator(".mx-choices button[data-right]").first.click()
page.locator(".mx-ok button[data-id]").first.click()
page.locator(".mx-choices button:not([data-right])").first.click() # question 10 wrong
playwright.expect(page.locator(".mx-bad")).to_be_visible()
assert page.locator(".mx-choices button.right").count() == 0 # the right answer is not revealed
assert page.locator(".mx-choices button:not([disabled])").count() == 0
slips = progress_of(page)["slips"]
assert [(s["id"], s["via"]) for s in slips] == [("t_ext", "practice")] and slips[0]["m"] # the mistake is remembered
page.locator(".mx-bad button[data-id=t_ext]").first.click()
page.locator(".mx-choices button[data-right]").first.click() # it comes back and is solved
playwright.expect(page.locator(".mx-ok b")).to_have_text(re.compile("תיקנתם|הטעות מקודם")) # fixing is praised
playwright.expect(page.locator(".mx-ok")).to_contain_text("עוד 2 תשובות נכונות ברצף")
assert not progress_of(page)["done"].get("t_ext") # all solved, but not yet a clean run
for _ in range(2):
page.locator(".mx-ok button[data-id]").first.click()
page.locator(".mx-choices button[data-right]").first.click()
playwright.expect(page.locator(".sky-cele h2").first).to_have_text("כוכב חדש!")
p = progress_of(page)
assert p["done"]["t_ext"] and not p["gold"].get("t_ext")
assert p["review"]["t_ext"]["box"] == 0 # the first review is tomorrow
assert not errors
def test_a_due_skill_comes_back_in_a_mixed_review(browser, server):
old = (datetime.now(timezone.utc) - timedelta(days=5)).isoformat()
yesterday = (date.today() - timedelta(days=1)).isoformat()
later = (date.today() + timedelta(days=3)).isoformat()
progress = {"done": {"t_ext": old, "t_simplify": old, "k_def": old}, "seen": {"t_ext": old, "t_simplify": old, "k_def": old},
"review": {"t_ext": {"box": 1, "due": yesterday}, "t_simplify": {"box": 0, "due": later}}}
page, errors = page_with(browser, server, progress, no_chance=True)
card = page.locator(".mx-review")
playwright.expect(card).to_contain_text("2 מיומנויות") # t_ext is due, k_def is old; t_simplify is not yet
card.click()
sheet = page.locator(".mx-review-sheet")
playwright.expect(sheet.locator("h3")).to_have_text("שאלה 1 מתוך 2")
sheet.locator(".mx-choices button[data-right]").first.click()
playwright.expect(sheet.locator(".mx-ok")).to_contain_text("הנושא:")
sheet.locator("[data-act=review-next]").click()
sheet.locator(".mx-choices button:not([data-right])").first.click()
playwright.expect(sheet.locator(".mx-bad")).to_contain_text("יחזור מחר")
sheet.locator("[data-act=review-next]").click()
playwright.expect(sheet.locator(".mx-ok b")).to_have_text("החזרה הסתיימה")
p = progress_of(page)
boxes = sorted(p["review"][i]["box"] for i in ("t_ext", "k_def"))
assert boxes in ([0, 0], [0, 2]) # the right one moved on, the wrong one starts over
tomorrow = (date.today() + timedelta(days=1)).isoformat()
assert tomorrow in {p["review"][i]["due"] for i in ("t_ext", "k_def")}
page.locator(".mx-x").click()
playwright.expect(page.locator(".mx-review")).to_have_count(0) # nothing is due any more today
assert not errors
def test_a_round_asks_ten_of_thirty_and_a_finished_skill_gets_a_new_round(browser, server):
page, errors = page_with(browser, server, no_chance=True)
page.locator('.mx-star[data-id="t_ext"]').click()
playwright.expect(page.locator(".mx-qprog span").first).to_have_text("שאלה 1 מתוך 10")
page.locator(".mx-choices button[data-right]").first.click()
rnd = progress_of(page)["set"]["t_ext"]
assert len(rnd) == len(set(rnd)) == 10 and all(0 <= i < 30 for i in rnd)
page.locator(".mx-ok button[data-id]").first.click()
for _ in range(9):
page.locator(".mx-choices button[data-right]").first.click()
if page.locator(".sky-cele").count():
break
page.locator(".mx-ok button[data-id]").first.click()
while page.locator(".sky-cele [data-sky=go]").count():
page.locator(".sky-cele [data-sky=go]").first.click()
p = progress_of(page)
assert p["done"]["t_ext"] and sorted(p["solved"]["t_ext"]) == sorted(rnd)
page.locator(".mx-x").click()
page.locator('.mx-star[data-id="t_ext"]').click() # practising it again: the questions not met yet come first
page.locator(".mx-choices button[data-right]").first.click()
again = progress_of(page)["set"]["t_ext"]
assert not set(again) & set(rnd)
assert not errors
def test_progress_from_before_rounds_stays_on_the_first_ten(browser, server):
page, errors = page_with(browser, server, {"solved": {"t_ext": [0, 1, 2]}, "at": {"t_ext": 3}})
page.locator('.mx-star[data-id="t_ext"]').click()
playwright.expect(page.locator(".mx-qprog span").first).to_have_text("שאלה 4 מתוך 10")
playwright.expect(page.locator(".mx-qdots i.ok")).to_have_count(3)
assert not errors
def test_answers_saved_by_a_page_from_before_rounds_are_kept(browser, server):
"""A page that showed all 30 questions may have saved answers past the first ten: they join the round."""
page, errors = page_with(browser, server, {"solved": {"t_ext": [0, 1, 14, 22]}, "at": {"t_ext": 23}})
page.locator('.mx-star[data-id="t_ext"]').click()
playwright.expect(page.locator(".mx-qprog span").first).to_have_text("שאלה 5 מתוך 10")
playwright.expect(page.locator(".mx-qdots i.ok")).to_have_count(4)
assert not errors
def test_a_practice_exam_mixes_the_taught_units_and_reports_at_the_end(browser, server):
page, errors = page_with(browser, server, {"done": {"t_ext": "2026-10-01T00:00:00+00:00"}}, no_chance=True,
now=datetime(2026, 11, 3, 10))
page.evaluate("""() => { const b = document.createElement('button'); b.dataset.act = 'quiz';
document.getElementById('mathView').append(b); b.click(); b.remove(); }""") # the mixed quiz, as an assignment opens it
sheet = page.locator(".mx-quiz-sheet")
on = sheet.locator('[data-quiz-unit][aria-pressed="true"]')
playwright.expect(on).to_have_count(4) # before November: algebra 1-2, the kite, the isosceles triangle
assert sorted(on.evaluate_all("els=>els.map(e=>e.dataset.quizUnit)")) == ["i", "k", "t", "t2"]
sheet.locator('[data-quiz-unit="k"]').click()
playwright.expect(on).to_have_count(3)
sheet.locator('[data-quiz-unit="k"]').click()
sheet.locator("[data-act=quiz-start]").click()
playwright.expect(sheet.locator(".mx-quiz-dots button")).to_have_count(12)
playwright.expect(sheet.locator("h3")).to_have_text("שאלה 1 מתוך 12")
sheet.locator(".mx-choices button:not([data-right])").first.click() # the first one wrong
assert sheet.locator(".mx-ok, .mx-bad").count() == 0 # no feedback during the exam
for _ in range(10):
sheet.locator("[data-act=quiz-next]").click()
sheet.locator(".mx-choices button[data-right]").first.click()
sheet.locator("[data-act=quiz-next]").click() # the last one is left empty
sheet.locator("[data-act=quiz-submit]").click()
playwright.expect(sheet.locator(".mx-quiz-warn")).to_contain_text("שאלה אחת לא נענתה")
sheet.locator('[data-quiz-go="0"]').click() # back to the first: the choice is kept
playwright.expect(sheet.locator('.mx-choices button[aria-pressed="true"]')).to_have_count(1)
sheet.locator('[data-quiz-go="11"]').click()
sheet.locator("[data-act=quiz-submit]").click() # warned once: now it is handed in
playwright.expect(sheet.locator("h3")).to_have_text("10 מתוך 12 נכונות")
playwright.expect(sheet.locator(".mx-quiz-plan li")).to_have_count(1) # the one mistake, with its skill to practise
playwright.expect(sheet.locator(".mx-quiz-plan button[data-id]").first).to_be_visible()
playwright.expect(sheet.locator(".mx-quiz-units-score > div")).to_have_count(4)
p = progress_of(page)
q = p["quizzes"][-1]
assert (q["n"], q["right"], sorted(q["units"])) == (12, 10, ["i", "k", "t", "t2"]) and len(q["weak"]) == 2
assert p["days"]["2026-11-03"] == 10 # right answers count toward today's goal
page.locator(".mx-quiz-sheet .mx-x").click()
assert not errors
def test_leaving_a_practice_exam_asks_first(browser, server):
page, errors = page_with(browser, server, now=datetime(2026, 11, 3, 10))
page.evaluate("""() => { const b = document.createElement('button'); b.dataset.act = 'quiz';
document.getElementById('mathView').append(b); b.click(); b.remove(); }""") # the mixed quiz, as an assignment opens it
page.locator("[data-act=quiz-start]").click()
page.locator(".mx-choices button").first.click()
page.keyboard.press("Escape")
playwright.expect(page.locator(".mx-quiz-warn")).to_contain_text("לצאת?")
playwright.expect(page.locator(".mx-quiz-sheet")).to_be_visible()
page.locator("[data-act=quiz-quit]").click()
playwright.expect(page.locator(".mx-quiz-sheet")).to_be_hidden()
assert "quizzes" not in progress_of(page)
assert not errors
# ---------- misconception patterns ----------
def slips_at(now, *rows):
"""Mistake-log entries: (days ago, skill, tag[, via])."""
return [{"at": (now - timedelta(days=d)).isoformat(), "id": sid, "q": 0, "m": m, "via": (via or ["practice"])[0]}
for d, sid, m, *via in rows]
def patterns_of(page, slips, mistakes=None):
return page.evaluate("([slips,mistakes])=>window.MathlySky.patterns({slips},mistakes||{})", [slips, mistakes])
def test_old_progress_without_a_mistake_log_loads(browser, server):
page, errors = page_with(browser, server, {"done": {}, "comets": []})
page.locator('.mx-star[data-id="t_ext"]').click()
page.locator(".mx-choices button:not([data-right])").first.click()
playwright.expect(page.locator(".mx-bad")).to_be_visible()
assert len(progress_of(page)["slips"]) == 1
assert not errors
def test_the_mistake_log_keeps_the_newest_500(browser, server):
page, errors = page_with(browser, server)
log = page.evaluate("""()=>{ const P={}; for(let i=0;i<501;i++) window.MathlySky.slip(P,"t_ext",i,"sign_mid","practice");
return P.slips.map(s=>s.q); }""")
assert len(log) == 500 and log[0] == 1 and log[-1] == 500
assert not errors
def test_recurring_misconceptions_need_two_recent_and_rank_by_spread(browser, server):
page, errors = page_with(browser, server)
now = datetime.now(timezone.utc)
p = patterns_of(page, slips_at(now, (20, "t_ext", "sign_mid"), (3, "t_ext", "sign_mid"), (2, "t_ext", "ext_partial"),
(40, "t_ext", "move_sign"), (35, "t_ext", "move_sign")))
assert [x["m"] for x in p["recurring"]] == ["sign_mid"] # one ext_partial is not a pattern; move_sign is old
p = patterns_of(page, slips_at(now, *[(1, "t_ext_eq", "move_sign")] * 4,
(1, "t_ext", "sign_mid"), (2, "t_simplify", "sign_mid"), (3, "t_ext_eq", "sign_mid")))
assert [x["m"] for x in p["recurring"]] == ["sign_mid", "move_sign"] # three skills before four times in one
assert p["recurring"][0]["n"] == 3 and len(p["recurring"][0]["skills"]) == 3
assert not errors
def test_the_skill_to_practise_is_the_back_skill_or_the_most_frequent(browser, server):
page, errors = page_with(browser, server)
now = datetime.now(timezone.utc)
mistakes = {"ext_partial": {"back": "t_ext"}, "sign_mid": {"back": None}}
p = patterns_of(page, slips_at(now, (1, "t_simplify", "ext_partial"), (2, "t_simplify", "ext_partial"),
(1, "t_simplify", "sign_mid"), (2, "t_simplify", "sign_mid"), (3, "t_ext", "sign_mid")), mistakes)
practise = {x["m"]: x["practise"] for x in p["recurring"]}
assert practise == {"ext_partial": "t_ext", "sign_mid": "t_simplify"}
assert not errors
def test_a_pattern_that_stopped_is_shown_as_stopped_until_60_days(browser, server):
page, errors = page_with(browser, server)
now = datetime.now(timezone.utc)
p = patterns_of(page, slips_at(now, *[(20, "t_ext", "sign_mid")] * 3, (70, "t_ext", "move_sign"), (75, "t_ext", "move_sign"),
(20, "t_ext", "ext_partial")))
assert p["recurring"] == [] and [x["m"] for x in p["stopped"]] == ["sign_mid"] # once is not a pattern; 70 days is gone
assert not errors
def test_a_wrong_review_answer_is_logged(browser, server):
old = (datetime.now(timezone.utc) - timedelta(days=5)).isoformat()
page, errors = page_with(browser, server, {"done": {"t_ext": old}, "seen": {"t_ext": old}}, no_chance=True)
page.locator(".mx-review").click()
page.locator(".mx-review-sheet .mx-choices button:not([data-right])").first.click()
playwright.expect(page.locator(".mx-review-sheet .mx-bad")).to_be_visible()
slips = progress_of(page)["slips"]
assert [(s["id"], s["via"]) for s in slips] == [("t_ext", "review")] and slips[0]["m"]
assert not errors
def test_a_practice_exam_logs_only_its_final_picks_when_handed_in(browser, server):
page, errors = page_with(browser, server, now=datetime(2026, 11, 3, 10))
page.evaluate("""() => { const b = document.createElement('button'); b.dataset.act = 'quiz';
document.getElementById('mathView').append(b); b.click(); b.remove(); }""") # the mixed quiz, as an assignment opens it
sheet = page.locator(".mx-quiz-sheet")
sheet.locator("[data-act=quiz-start]").click()
sheet.locator(".mx-choices button:not([data-right])").first.click() # wrong, then changed to right
sheet.locator(".mx-choices button[data-right]").first.click()
for i in range(1, 12):
sheet.locator(f'[data-quiz-go="{i}"]').click()
sheet.locator(f".mx-choices button{':not([data-right])' if i in (1, 2) else '[data-right]'}").first.click()
assert "slips" not in progress_of(page) or not progress_of(page)["slips"] # nothing while the exam goes on
sheet.locator("[data-act=quiz-submit]").click()
playwright.expect(sheet.locator("h3")).to_have_text("10 מתוך 12 נכונות")
assert [s["via"] for s in progress_of(page)["slips"]] == ["exam", "exam"]
assert not errors
def test_a_left_practice_exam_logs_nothing(browser, server):
page, errors = page_with(browser, server, now=datetime(2026, 11, 3, 10))
page.evaluate("""() => { const b = document.createElement('button'); b.dataset.act = 'quiz';
document.getElementById('mathView').append(b); b.click(); b.remove(); }""") # the mixed quiz, as an assignment opens it
page.locator("[data-act=quiz-start]").click()
page.locator(".mx-choices button:not([data-right])").first.click()
page.locator("[data-act=quiz-quit]").click()
page.locator("[data-act=quiz-quit]").click()
playwright.expect(page.locator(".mx-quiz-sheet")).to_be_hidden()
assert not progress_of(page).get("slips")
assert not errors
def test_no_patterns_card_without_a_pattern(browser, server):
now = datetime.now(timezone.utc)
page, errors = page_with(browser, server, {"slips": slips_at(now, (1, "t_ext", "sign_mid"))})
playwright.expect(page.locator(".mx-patterns")).to_have_count(0) # once is not a pattern
assert not errors
def test_the_patterns_card_names_the_top_mistake_and_opens_what_to_practise(browser, server):
now = datetime.now(timezone.utc)
slips = slips_at(now, (1, "t_simplify", "sign_mid"), (2, "t_ext_eq", "sign_mid"), (3, "t_simplify", "sign_mid"),
(1, "t_simplify", "ext_partial"), (4, "t_simplify", "ext_partial"))
page, errors = page_with(browser, server, {"slips": slips}, no_chance=True)
card = page.locator(".mx-patterns")
playwright.expect(card).to_contain_text("טעות סימן באיבר האמצעי") # in two skills, before one skill
playwright.expect(card).to_contain_text("ב־2 מיומנויות")
card.click()
sheet = page.locator(".mx-patterns-sheet")
playwright.expect(sheet.locator(".mx-pattern-list li")).to_have_count(2)
playwright.expect(sheet.locator(".mx-pattern-list li").first).to_contain_text("3 פעמים ב־2 מיומנויות · לאחרונה אתמול")
assert sheet.locator(".mx-pattern-list button[data-id]").evaluate_all("els=>els.map(e=>e.dataset.id)") == [
"t_simplify", "t_ext"] # most frequent skill; then ext_partial's back-skill
sheet.locator('.mx-pattern-list button[data-id="t_ext"]').click()
playwright.expect(page.locator(".mx-choices")).to_be_visible() # the practice of t_ext is open
playwright.expect(page.locator("#mxTitle")).to_contain_text("פילוג")
assert not errors
def test_a_stopped_pattern_is_shown_as_a_win(browser, server):
now = datetime.now(timezone.utc)
page, errors = page_with(browser, server, {"slips": slips_at(now, *[(20, "t_ext", "sign_mid")] * 2)}, no_chance=True)
card = page.locator(".mx-patterns")
playwright.expect(card).to_contain_text("כבר לא חוזר")
card.click()
sheet = page.locator(".mx-patterns-sheet")
playwright.expect(sheet).to_contain_text("כרגע אין טעות שחוזרת")
playwright.expect(sheet.locator(".mx-pattern-list.gone li")).to_contain_text("טעות סימן באיבר האמצעי")
assert not errors
def test_the_patterns_sheet_fits_a_phone(browser, server):
now = datetime.now(timezone.utc)
slips = slips_at(now, *[(1, "t_simplify", "sign_mid")] * 2, *[(1, "t_ext", "ext_partial")] * 2,
*[(2, "t_ext_eq", "move_sign")] * 2, *[(20, "t_ext", "sign_product")] * 2)
page, errors = page_with(browser, server, {"slips": slips}, no_chance=True)
page.set_viewport_size({"width": 375, "height": 812})
for target in (".mx-patterns", None):
assert page.evaluate("document.documentElement.scrollWidth<=innerWidth")
if target:
page.locator(target).click()
playwright.expect(page.locator(".mx-patterns-sheet .mx-pattern-list li")).to_have_count(4)
assert not errors
def test_the_path_marks_the_skill_to_strengthen(browser, server):
now = datetime.now(timezone.utc)
progress = {"slips": slips_at(now, (1, "t_ext", "ext_partial"), (4, "t_simplify", "ext_partial")),
"done": {"t_ext": now.isoformat()}, "seen": {"t_ext": now.isoformat()}}
page, errors = page_with(browser, server, progress, no_chance=True)
assert page.locator(".mx-star.fix").evaluate_all("els=>els.map(e=>e.dataset.id)") == ["t_ext"] # ext_partial's back-skill
playwright.expect(page.locator('.mx-star[data-id="t_ext"] + .mx-lbl em')).to_have_text("לחזק")
assert not errors
def test_a_mistake_that_is_a_pattern_says_so_where_it_happens(browser, server):
now = datetime.now(timezone.utc)
page, errors = page_with(browser, server, {"slips": slips_at(now, (3, "t_ext_eq", "ext_partial"))}, no_chance=True)
page.locator('.mx-star[data-id="t_simplify"]').click()
page.locator(".mx-choices button[data-m=ext_partial]").first.click() # the second time: now a pattern
note = page.locator(".mx-bad .mx-pattern-note")
playwright.expect(note).to_contain_text("2 פעמים ב־2 מיומנויות")
playwright.expect(page.locator('.mx-bad button[data-id="t_ext"]')).to_have_count(1) # offered once, not twice
assert not errors
def test_a_first_mistake_has_no_pattern_note(browser, server):
page, errors = page_with(browser, server, no_chance=True)
page.locator('.mx-star[data-id="t_simplify"]').click()
page.locator(".mx-choices button:not([data-right])").first.click()
playwright.expect(page.locator(".mx-bad")).to_be_visible()
playwright.expect(page.locator(".mx-pattern-note")).to_have_count(0)
assert not errors
# ---- the class teacher's signals (MathlySky.attention): who needs attention, on Wednesday 4 November 2026
CLASS = {"skills": {"t_ext": "פילוג מורחב", "g_pyth": "פיתגורס"}, "units": [{"id": "t", "name": "טכניקה אלגברית 1"}]}
def attention(page, student, ctx=CLASS):
return page.evaluate("([s, c]) => MathlySky.attention(s, c, new Date(2026, 10, 4, 12))", [student, ctx])
def kinds(found):
return [x["kind"] for x in found]
def student(**progress):
return {"signed_in": True, "progress": {"done": {}, "days": {}, "slips": [], **progress}, "quiz_sittings": []}
def slips(skill, *days_ago):
return [{"at": (datetime(2026, 11, 4, 9) - timedelta(days=d)).isoformat() + "Z", "id": skill, "q": 0, "m": "x"}
for d in days_ago]
def test_a_student_who_stopped_practising_needs_attention(browser, server):
page, errors = page_with(browser, server)
found = attention(page, student(days={"2026-10-27": 6}))
assert [(x["kind"], x["text"]) for x in found] == [("inactive", "לא תרגל 8 ימים")]
assert attention(page, student(days={"2026-10-28": 6})) != [] and attention(page, student(days={"2026-10-29": 6})) == [] # 7 days: yes; 6: no
assert attention(page, student(days={"2026-11-02": 5})) == []
assert attention(page, student(seen={"t_ext": "2026-11-03T10:00:00Z"}, days={"2026-10-01": 9})) == [] # the last practice counts
assert not errors
def test_a_student_stuck_on_a_skill_is_named_with_it(browser, server):
page, errors = page_with(browser, server)
found = attention(page, student(days={"2026-11-03": 5}, slips=slips("t_ext", 1, 2, 3)))
assert [(x["kind"], x["skills"]) for x in found] == [("stuck", ["t_ext"])] and "פילוג מורחב" in found[0]["text"]
assert attention(page, student(days={"2026-11-03": 5}, slips=slips("t_ext", 1, 2))) == [] # two slips are not stuck
assert attention(page, student(days={"2026-11-03": 5}, slips=slips("t_ext", 1, 20, 30))) == [] # old ones do not count
assert attention(page, student(days={"2026-11-03": 5}, done={"t_ext": "2026-11-04"}, slips=slips("t_ext", 1, 2, 3))) == []
assert attention(page, student(days={"2026-11-03": 5}, slips=slips("other", 1, 2, 3))) == [] # not a skill of the class
assert not errors
def test_a_drop_in_practice_needs_enough_practice_to_drop_from(browser, server):
page, errors = page_with(browser, server)
week = lambda this, last: {"2026-11-02": this, "2026-10-27": last // 2, "2026-10-29": last - last // 2}
assert page.evaluate("p => MathlySky.weekly(p, new Date(2026, 10, 4, 12))", {"days": week(14, 22)}) == {"thisWeek": 14, "lastWeek": 22}
found = attention(page, student(days=week(6, 20)))
assert kinds(found) == ["drop"] and "6" in found[0]["text"] and "20" in found[0]["text"]
assert attention(page, student(days=week(2, 8))) == [] # 8 last week is too little to call a drop
assert attention(page, student(days=week(10, 20))) == [] # exactly half is not less than half
assert not errors
def test_a_low_server_grade_needs_attention_but_the_devices_does_not(browser, server):
page, errors = page_with(browser, server)
sit = lambda grade, at: {"id": at, "unit_id": "t", "grade": grade, "open": 0 if grade is not None else 1, "submitted_at": at}
base = student(days={"2026-11-03": 5})
found = attention(page, {**base, "quiz_sittings": [sit(40, "2026-11-03T10:00:00Z")]})
assert [(x["kind"], x["unit"]) for x in found] == [("grade", "t")] and "40" in found[0]["text"]
assert attention(page, {**base, "quiz_sittings": [sit(40, "2026-10-01T10:00:00Z"), sit(70, "2026-11-03T10:00:00Z")]}) == [] # the latest counts
assert attention(page, {**base, "quiz_sittings": [sit(40, "2026-10-01T10:00:00Z"), sit(None, "2026-11-03T10:00:00Z")]}) != [] # an open one is no grade
assert attention(page, {**base, "quiz_sittings": None}) == []
assert attention(page, {**base, "progress": {**base["progress"], "uq": {"t": {"history": [{"score": 10}]}}}}) == []
assert attention(page, {**base, "quiz_sittings": [sit(55, "2026-11-03T10:00:00Z")]}) == [] # 55 is not below 55
# the official grade (the latest final sitting) counts over a later practice sitting, and is named as final
final = lambda grade, at: {**sit(grade, at), "mode": "final"}
found = attention(page, {**base, "quiz_sittings": [final(40, "2026-10-01T10:00:00Z"), sit(90, "2026-11-03T10:00:00Z")]})
assert [x["kind"] for x in found] == ["grade"] and "בבוחן המסכם" in found[0]["text"] and "40" in found[0]["text"]
assert attention(page, {**base, "quiz_sittings": [final(80, "2026-10-01T10:00:00Z"), sit(30, "2026-11-03T10:00:00Z")]}) == []
assert not errors
def test_a_student_who_never_started_is_listed_only_once_signed_in(browser, server):
page, errors = page_with(browser, server)
assert [x["text"] for x in attention(page, {"signed_in": True, "progress": None, "quiz_sittings": []})] == ["עוד לא התחיל לתרגל"]
assert attention(page, {"signed_in": False, "progress": None, "quiz_sittings": []}) == []
assert not errors
# ---- the worked example and the help panel. The page is given an example for every skill, as the data will have.
HELP_EXAMPLE = {"question": "$(x + 5)(x − 2) = ?$",
"steps": [{"do": "כופלים כל איבר בכל איבר: $x² − 2x + 5x − 10$", "why": "כך לא שוכחים אף מכפלה."},
{"do": "מחברים איברים דומים: $−2x + 5x = 3x$", "why": "רק איברים עם אותה חזקה מתחברים."},
{"do": "התוצאה: $x² + 3x − 10$", "why": "סידרנו מהחזקה הגבוהה לנמוכה."}],
"answer": "$x² + 3x − 10$"}
def page_with_examples(browser, server, progress=None):
"""Like page_with, with a worked example added to every skill in the skills the server sends."""
ctx = browser.new_context(viewport={"width": 390, "height": 844})
ctx.add_init_script("Math.random=()=>0.99")
ctx.route("https://cdn.jsdelivr.net/**", lambda route: route.abort())
ctx.route("https://fonts.googleapis.com/**", lambda route: route.abort())
ctx.add_init_script("try{localStorage.setItem('mathly.sound','off')}catch{}")
if progress is not None:
ctx.add_init_script(f"localStorage.setItem({json.dumps(KEY)},{json.dumps(json.dumps(progress))})")
def skills(route):
graph = route.fetch().json()
for skill in graph["skills"]:
skill["example"] = HELP_EXAMPLE
route.fulfill(json=graph)
ctx.route("**/api/math/skills", skills)
page = ctx.new_page()
errors = []
page.on("pageerror", lambda e: errors.append(str(e)))
page.goto(server)
page.locator('.mx-nav [data-view="path"]').click() # the app opens on home; the trail is on the path tab
playwright.expect(page.locator(".mx-trail")).to_be_visible()
return page, errors
def wrong_answer(page):
page.locator(".mx-choices button:not([data-right])").first.click()
playwright.expect(page.locator(".mx-bad")).to_be_visible()
def test_the_worked_example_is_offered_from_the_second_mistake_in_a_round(browser, server):
page, errors = page_with_examples(browser, server)
skill = page.locator(".mx-star.st-next").get_attribute("data-id")
page.locator(".mx-star.st-next").click()
wrong_answer(page)
assert page.locator("[data-example]").count() == 0 # the first mistake: only the tip
page.locator(".mx-bad button.solid").click() # on to the next question
asked = page.locator(".mx-q p").first.inner_text()
wrong_answer(page)
offer = page.locator(".mx-bad [data-example]")
playwright.expect(offer).to_have_text("איך פותרים? דוגמה פתורה")
# open it: a panel over the question, one step at a time, and the answer only at the end
offer.click()
help_ = page.locator(".mx-help")
playwright.expect(help_.locator(".mx-example")).to_be_visible()
playwright.expect(help_.locator(".mx-example-q")).to_contain_text("(x + 5)(x − 2)")
steps = help_.locator(".mx-example-steps li")
assert [steps.nth(i).is_visible() for i in range(3)] == [True, False, False]
assert not help_.locator(".mx-example-answer").is_visible()
help_.locator("[data-example-next]").click()
assert [steps.nth(i).is_visible() for i in range(3)] == [True, True, False]
help_.locator("[data-example-next]").click()
playwright.expect(help_.locator("[data-example-next]")).to_have_text("הצגת התשובה")
help_.locator("[data-example-next]").click()
playwright.expect(help_.locator(".mx-example-answer")).to_be_visible()
playwright.expect(help_.locator("[data-example-next]")).to_be_hidden()
# closing returns to the same question, with the same feedback
help_.locator("button.solid").click()
playwright.expect(page.locator(".mx-help-wrap")).to_have_count(0)
assert page.locator(".mx-q p").first.inner_text() == asked
playwright.expect(page.locator(".mx-bad")).to_be_visible()
# a third mistake offers it again; Escape closes the panel before the sheet
page.locator(".mx-bad button.solid").click()
wrong_answer(page)
page.locator(".mx-bad [data-example]").click()
playwright.expect(page.locator(".mx-help")).to_be_visible()
page.keyboard.press("Escape")
playwright.expect(page.locator(".mx-help-wrap")).to_have_count(0)
playwright.expect(page.locator(".mx-sheet").first).to_be_visible()
assert progress_of(page)["examples"][skill]["n"] == 2 # both openings are kept
assert not errors
def test_a_skill_without_an_example_offers_none(browser, server):
page, errors = page_with(browser, server) # the data has no examples yet
page.locator(".mx-star.st-next").click()
wrong_answer(page)
page.locator(".mx-bad button.solid").click()
wrong_answer(page)
assert page.locator("[data-example]").count() == 0
page.locator(".mx-helpbtn").click() # the help is there all the same
playwright.expect(page.locator(".mx-help")).to_contain_text("לכישור הזה עוד אין דוגמה פתורה")
assert "examples" not in progress_of(page) or progress_of(page)["examples"] == {}
assert not errors
def test_opening_the_example_is_recorded_and_changes_neither_finishing_nor_gold(browser, server):
page, errors = page_with_examples(browser, server)
nxt = page.locator(".mx-star.st-next").get_attribute("data-id")
page.locator(".mx-star.st-next").click()
page.locator(".mx-helpbtn").click() # the "?" shows the example before any answer
playwright.expect(page.locator(".mx-help .mx-example")).to_be_visible()
from app.math_skills import algebra9
description = next(x["description"] for x in algebra9()["skills"] if x["id"] == nxt)
playwright.expect(page.locator(".mx-help")).to_contain_text(description.split("$")[0].strip()[:20]) # and the skill's description
page.locator(".mx-help button.solid").click()
p = progress_of(page)
assert p["examples"][nxt]["n"] == 1 and p["examples"][nxt]["last"] and not p["done"].get(nxt)
answer_skill_right(page) # clean first-try answers still make it gold
playwright.expect(page.locator(".sky-cele h2").first).to_have_text("כוכב זהב!")
while page.locator(".sky-cele [data-sky=go]").count():
page.locator(".sky-cele [data-sky=go]").first.click()
p = progress_of(page)
assert p["done"][nxt] and p["gold"][nxt] and p["examples"][nxt]["n"] == 1
assert not errors
# ---- assignments (MathlySky.assignmentState): created on 1 November 2026 (10:00 UTC), due 12 November, now Wednesday 4 November
ASSIGNMENT = {"id": "a1", "created_at": "2026-11-01T10:00:00Z", "due_on": "2026-11-12", "title": "חזרה",
"items": [{"kind": "skill", "id": "g_pyth"}, {"kind": "unit_quiz", "unit": "g"}, {"kind": "exam", "units": ["g", "t"]}]}
def state(page, progress=None, sittings=(), now="2026-11-04T12:00:00", assignment=ASSIGNMENT):
return page.evaluate("([a, p, s, n]) => MathlySky.assignmentState(a, p, s, new Date(n))",
[assignment, progress or {}, None if sittings is None else list(sittings), now])
def test_a_skill_finished_before_the_assignment_is_already_done_and_on_time(browser, server):
page, errors = page_with(browser, server)
got = state(page, {"done": {"g_pyth": "2026-09-20T08:00:00Z"}})
first = got["items"][0]
assert (first["done"], first["late"]) == (True, False) and got["doneCount"] == 1 and got["total"] == 3
assert got["next"] == 1 and not got["finished"] and not got["overdue"] # the next one to do is the unit quiz
assert state(page, {})["items"][0]["done"] is False
assert not errors
def test_a_unit_quiz_counts_only_when_handed_in_after_the_assignment_was_made(browser, server):
page, errors = page_with(browser, server)
before = [{"unit_id": "g", "submitted_at": "2026-10-30T09:00:00Z"}]
after = [{"unit_id": "g", "submitted_at": "2026-11-03T09:00:00Z"}]
other = [{"unit_id": "t", "submitted_at": "2026-11-03T09:00:00Z"}]
assert state(page, sittings=before)["items"][1]["done"] is False
assert state(page, sittings=other)["items"][1]["done"] is False
assert state(page, sittings=before + after)["items"][1]["done"] is True
assert state(page, sittings=after)["items"][1]["at"] == "2026-11-03T09:00:00Z"
unknown = state(page, sittings=None)["items"][1] # the server's record could not be read
assert (unknown["done"], unknown["known"]) == (False, False)
assert not errors
def test_a_practice_exam_must_cover_every_unit_of_the_item_and_come_after_the_assignment(browser, server):
page, errors = page_with(browser, server)
exam = lambda at, *units: {"quizzes": [{"at": at, "n": 12, "right": 9, "units": list(units)}]}
assert state(page, exam("2026-11-03T09:00:00Z", "g"))["items"][2]["done"] is False # missing a unit
assert state(page, exam("2026-10-30T09:00:00Z", "g", "t"))["items"][2]["done"] is False # before the assignment
assert state(page, exam("2026-11-03T09:00:00Z", "g", "t"))["items"][2]["done"] is True
assert state(page, exam("2026-11-03T09:00:00Z", "t", "g", "k"))["items"][2]["done"] is True # more units than asked is fine
assert not errors
def test_late_means_after_the_due_day_in_jerusalem_and_overdue_means_unfinished_after_it(browser, server):
page, errors = page_with(browser, server)
all_done = lambda skill_at: {"done": {"g_pyth": skill_at}, "quizzes": [{"at": "2026-11-03T09:00:00Z", "units": ["g", "t"]}]}
sit = [{"unit_id": "g", "submitted_at": "2026-11-03T09:00:00Z"}]
on_time = state(page, all_done("2026-11-12T21:30:00Z"), sit) # 23:30 on the 12th in Jerusalem (UTC+2)
assert on_time["finished"] and not on_time["late"] and not on_time["overdue"]
late = state(page, all_done("2026-11-12T22:30:00Z"), sit) # 00:30 on the 13th
assert late["finished"] and late["late"] and late["items"][0]["late"] and not late["items"][1]["late"]
assert not state(page, {}, [], now="2026-11-12T20:00:00")["overdue"] # the evening of the due day: not yet
assert state(page, {}, [], now="2026-11-13T09:00:00")["overdue"] # the day after, unfinished
done_late = state(page, all_done("2026-11-02T09:00:00Z"), sit, now="2026-11-20T09:00:00")
assert done_late["finished"] and not done_late["overdue"] # finished: never overdue
assert not errors
def test_a_worksheet_is_done_when_handed_in_and_late_after_the_due_day(browser, server):
page, errors = page_with(browser, server)
sheet = {**ASSIGNMENT, "items": [{"kind": "worksheet", "id": "w1"}, {"kind": "skill", "id": "g_pyth"}]}
handed = lambda at, wid="w1": {"sittings": [], "submissions": [{"worksheet_id": wid, "submitted_at": at, "score": None}]}
on_time = page.evaluate("([a, s, n]) => MathlySky.assignmentState(a, {}, s, new Date(n))",
[sheet, handed("2026-11-12T20:00:00Z"), "2026-11-04T12:00:00"])
first = on_time["items"][0] # 22:00 on the due day in Jerusalem
assert (first["done"], first["late"], first["known"]) == (True, False, True) and first["submission"]["worksheet_id"] == "w1"
assert on_time["next"] == 1
run = lambda server_data: page.evaluate("([a, s]) => MathlySky.assignmentState(a, {}, s, new Date('2026-11-04T12:00:00'))",
[sheet, server_data])["items"][0]
late = run(handed("2026-11-12T22:30:00Z")) # 00:30 on the 13th
assert late["done"] and late["late"]
assert not run(handed("2026-11-03T09:00:00Z", "w2"))["done"] # another worksheet's submission
assert not run({"sittings": [], "submissions": []})["done"] # opened, not handed in
unknown = run({"sittings": [], "submissions": None}) # could not be read
assert (unknown["done"], unknown["known"]) == (False, False)
assert run([])["known"] and not run([])["done"] # a bare array is the sittings
assert not errors
def test_a_returned_worksheet_is_not_done_until_handed_in_again_by_its_new_date(browser, server):
page, errors = page_with(browser, server)
sheet = {**ASSIGNMENT, "items": [{"kind": "worksheet", "id": "w1"}]}
run = lambda sub, now: page.evaluate("([a, s, n]) => MathlySky.assignmentState(a, {}, s, new Date(n))",
[sheet, {"sittings": [], "submissions": [sub]}, now])
returned = {"worksheet_id": "w1", "submitted_at": "2026-11-10T09:00:00Z", "state": "returned", "return_due_on": "2026-11-16"}
got = run(returned, "2026-11-14T12:00:00")
assert not got["finished"] and got["items"][0]["returned"] and not got["overdue"] # past the 12th, before the 16th
assert run(returned, "2026-11-17T12:00:00")["overdue"]
no_date = {**returned, "return_due_on": None}
assert run(no_date, "2026-11-14T12:00:00")["overdue"] # without a new date the first one stands
again = {"worksheet_id": "w1", "submitted_at": "2026-11-15T09:00:00Z", "state": "submitted", "version": 2,
"earlier": [returned]}
fixed = run(again, "2026-11-15T12:00:00")
assert fixed["finished"] and not fixed["late"] # by the new date: on time
assert not errors
def test_each_owed_item_has_one_state_in_the_tasks_order(browser, server):
page, errors = page_with(browser, server)
order = page.evaluate("""() => [
{returned:true, overdue:true, waiting:true}, {overdue:true, waiting:true}, {waiting:true, checked:true},
{checked:true, handedIn:true}, {handedIn:true, started:true}, {started:true}, {}].map(f => MathlySky.taskState(f))""")
assert order == ["returned", "late", "waiting", "checked", "handed", "progress", "new"]
sheet = {**ASSIGNMENT, "items": [{"kind": "worksheet", "id": "w1"}]}
task = lambda sub, now="2026-11-04T12:00:00": page.evaluate(
"([a, s, n]) => MathlySky.assignmentTask(a, {}, s, new Date(n))", [sheet, {"sittings": [], "submissions": [sub] if sub else []}, now])
handed = {"worksheet_id": "w1", "submitted_at": "2026-11-03T09:00:00Z", "state": "submitted"}
assert task(None)["state"] == "new" and task(None, "2026-11-20T12:00:00")["label"] == "באיחור"
assert task(handed)["label"] == "ממתין לבדיקה"
assert task({**handed, "state": "checked", "checked_at": "2026-11-05T09:00:00Z"})["label"] == "נבדק"
assert task({**handed, "state": "returned"}, "2026-11-20T12:00:00")["label"] == "הוחזר לתיקון" # even past the date
skills = {**ASSIGNMENT, "items": [{"kind": "skill", "id": "g_pyth"}, {"kind": "skill", "id": "t_ext"}]}
progress = lambda done: page.evaluate("([a, p]) => MathlySky.assignmentTask(a, p, [], new Date('2026-11-04T12:00:00')).state", [skills, {"done": done}])
assert progress({"g_pyth": "2026-11-02T09:00:00Z"}) == "progress"
assert progress({"g_pyth": "2026-11-02T09:00:00Z", "t_ext": "2026-11-03T09:00:00Z"}) == "handed"
final = lambda offer: page.evaluate("o => MathlySky.finalTask(o).label", offer)
assert final({"start": None}) == "עוד לא התחיל"
assert final({"start": {"id": "s"}}) == "בתהליך"
assert final({"start": {"id": "s", "sitting_id": "x"}}) == "הוגש · ממתין לתוצאות"
assert not errors
# ---- focus areas (MathlySky.focus): where a student most needs work, with the evidence for each skill
def test_lost_quiz_points_are_split_between_the_skills_of_a_question(browser, server):
page, errors = page_with(browser, server)
sit = {"submitted_at": "2026-11-03T09:00:00Z", "questions": [
{"points": 25, "earned": 10, "skills": ["t_ext", "t_ext_eq"]}, {"points": 25, "earned": None, "skills": ["t_area"]},
{"points": 25, "earned": 25, "skills": ["t_formulas"]}]}
lost = page.evaluate("s => MathlySky.quizLost(s, new Date('2026-11-04T12:00:00Z'))", [sit])
assert lost == {"t_ext": 7.5, "t_ext_eq": 7.5} # an unchecked answer adds nothing, a full one neither
old = {**sit, "submitted_at": "2026-08-01T09:00:00Z"}
assert page.evaluate("s => MathlySky.quizLost(s, new Date('2026-11-04T12:00:00Z'))", [old]) == {} # over 60 days
assert not errors
def test_the_focus_score_ranks_skills_by_their_evidence(browser, server):
page, errors = page_with(browser, server)
P = {"done": {"t_area": "2026-09-01T09:00:00Z"}, "seen": {"t_area": "2026-09-01T09:00:00Z", "t_simplify": "2026-11-03T09:00:00Z"},
"slips": [{"at": "2026-11-02T09:00:00Z", "id": "t_ext", "m": "x"}] * 4, "tries": {"t_ext": 3}}
sit = [{"submitted_at": "2026-11-03T09:00:00Z", "questions": [{"points": 25, "earned": 13, "skills": ["t_ext"]}]}]
got = page.evaluate("([p, s]) => MathlySky.focus(p, s, ['t_ext','t_simplify','t_area','t_formulas'], new Date('2026-11-04T12:00:00Z'))", [P, sit])
assert [x["id"] for x in got] == ["t_ext", "t_simplify", "t_area"] # t_formulas: nothing against it
first = got[0]
assert (first["lost"], first["wrong"], first["unfinished"], first["fading"]) == (12, 4, True, False)
assert got[2]["fading"] is True and got[2]["unfinished"] is False
assert page.evaluate("() => MathlySky.focus({}, [], ['t_ext'])") == [] # no evidence, no focus area
assert not errors
# ---------- quiz and exam names ----------
# A unit has a בוחן חיזוק (retaken) and a בוחן מסכם (once, the unit's grade); practice over several units is a מבחן
# תרגול; a מבחן is the school's exam. These earlier names are gone from every screen (a whole word: "מבחני תרגול"
# is fine, "בחני תרגול" on its own is not).
import re as _re
OLD_TERMS = ("בוחן סופי", "הבוחן הסופי", "בחנים סופיים", "בוחנים סופיים", "בוחן תרגול", "בחני תרגול", "בחני התרגול",
"בוחן מעורב", "בחנים מעורבים", "הבוחן המעורב", "מבחני יחידה", "בוחן כמו במבחן")
def old_terms_in(text):
return [t for t in OLD_TERMS if _re.search(rf"(?<![\u05d0-\u05ea]){t}(?![\u05d0-\u05ea])", text)]
def test_no_old_quiz_names_in_what_is_shipped():
from pathlib import Path
root = Path(__file__).resolve().parent.parent
files = [*root.glob("static/*.js"), *root.glob("static/*.html"), *root.glob("app/*.py")]
found = [f"{f.name}: {t}" for f in files for t in old_terms_in(f.read_text(encoding="utf-8"))]
assert not found
def test_the_student_home_and_the_guide_show_no_old_quiz_names(browser, server):
page, errors = page_with(browser, server)
home = page.locator("#mathView").inner_text()
page.locator("#mathView [data-guide-open]").first.click()
playwright.expect(page.locator("#mgS")).to_be_visible()
text = home + page.get_by_role("dialog", name="איך משתמשים באפליקציה").text_content() # both tabs, the hidden one too
assert not old_terms_in(text)
assert not errors
# ---- quizzes chosen for each student (MathlySky.chance / pickQuiz)
NOW = "2026-11-04T12:00:00Z"
def chance(page, P, skill):
return page.evaluate("([p, id, now]) => MathlySky.chance(p, id, new Date(now))", [P, skill, NOW])
def test_a_wrong_answer_is_counted_for_its_skill(browser, server):
page, errors = page_with(browser, server)
page.locator('.mx-star.st-next').click()
page.locator(".mx-choices button:not([data-right])").first.click()
assert progress_of(page)["wrongs"] == {"t_ext": 1}
assert not errors
def test_the_chance_of_a_right_answer_follows_the_answers_and_the_stars(browser, server):
page, errors = page_with(browser, server)
recent, old = "2026-11-03T09:00:00Z", "2026-09-01T09:00:00Z"
assert chance(page, {"tries": {"a": 4}}, "a") is None # under 5 answers: unknown
assert chance(page, {"tries": {"a": 8}, "wrongs": {"a": 2}}, "a") == pytest.approx(.7) # (6 + 1) / (8 + 2)
slips = [{"at": recent, "id": "a", "m": "x"}] * 3
assert chance(page, {"tries": {"a": 8}, "wrongs": {"a": 1}, "slips": slips}, "a") == pytest.approx(.6) # the slips' history counts
weak_done = {"tries": {"a": 10}, "wrongs": {"a": 8}, "done": {"a": recent}, "seen": {"a": recent}}
assert chance(page, weak_done, "a") == pytest.approx(.8) # finished: at least 0.8
assert chance(page, {**weak_done, "gold": {"a": recent}}, "a") == pytest.approx(.9) # gold: at least 0.9
assert chance(page, {**weak_done, "done": {"a": old}, "seen": {"a": old}}, "a") == pytest.approx(.7) # fading: 0.1 less
assert not errors
def pick(page, P, pool, **options):
return page.evaluate("([p, pool, o, now]) => MathlySky.pickQuiz(p, pool, {...o, now: new Date(now)})", [P, pool, options, NOW])
def class_of_twelve():
"""4 started and not finished (chance 0.65), 8 finished (0.8 and more), 2 never practised."""
recent = "2026-11-03T09:00:00Z"
P, pool = {"tries": {}, "wrongs": {}, "done": {}, "seen": {}}, []
for i in range(4):
P["tries"][f"c{i}"], P["wrongs"][f"c{i}"], P["seen"][f"c{i}"] = 18, 6, recent # (12 + 1) / 20 = 0.65
pool.append({"id": f"c{i}", "qs": list(range(10)), "rank": i})
for i in range(8):
P["tries"][f"s{i}"], P["done"][f"s{i}"], P["seen"][f"s{i}"] = 12, recent, recent
pool.append({"id": f"s{i}", "qs": list(range(10)), "rank": 10 + i})
pool += [{"id": "n0", "qs": [0, 1], "rank": 99}, {"id": "n1", "qs": [0, 1], "rank": 98}]
return P, pool
def test_quiz_one_aims_at_70_percent_mostly_from_near_mastered_topics(browser, server):
page, errors = page_with(browser, server)
P, pool = class_of_twelve()
one = pick(page, P, pool, target=.7)
two = pick(page, P, pool, target=.8)
near = lambda r: sum(x["id"].startswith("c") for x in r["items"])
assert len(one["items"]) == 12 and .65 <= one["expected"] <= .75
assert len(two["items"]) == 12 and .75 <= two["expected"] <= .85
assert near(one) > 6 and near(two) < near(one) # quiz 2 has more finished topics
for r in (one, two):
assert not [x for x in r["items"] if x["id"].startswith("n")] # never practised: never asked
per = {}
for x in r["items"]:
per[x["id"]] = per.get(x["id"], 0) + 1
assert max(per.values()) <= 3 # at most 3 a topic
assert not errors
def test_a_retake_draws_questions_not_seen_before(browser, server):
page, errors = page_with(browser, server)
P, pool = class_of_twelve()
first = pick(page, P, pool, target=.7)
seen = {f'{x["id"]}:{x["qi"]}': "2026-11-03T10:00:00Z" for x in first["items"]}
second = pick(page, P, pool, target=.7, seen=seen)
assert not {f'{x["id"]}:{x["qi"]}' for x in second["items"]} & set(seen)
# a topic whose questions were all seen: the one seen longest ago comes first
small = [{"id": "c0", "qs": [0, 1], "rank": 0}]
got = pick(page, P, small, target=.7, n=1, seen={"c0:0": "2026-11-03T10:00:00Z", "c0:1": "2026-11-01T10:00:00Z"})
assert got["items"] == [{"id": "c0", "qi": 1}]
assert not errors
def test_a_student_with_few_answers_gets_the_most_recently_taught_topics(browser, server):
page, errors = page_with(browser, server)
P = {"tries": {"a": 2, "b": 2, "c": 2}, "seen": {"a": NOW, "b": NOW, "c": NOW}}
pool = [{"id": "a", "qs": list(range(10)), "rank": 1}, {"id": "b", "qs": list(range(10)), "rank": 3},
{"id": "c", "qs": list(range(10)), "rank": 2}, {"id": "z", "qs": list(range(10)), "rank": 9}]
got = pick(page, P, pool, target=.7, n=6)
assert [x["id"] for x in got["items"]][:3] == ["b", "c", "a"] and got["unknown"] == 6 # newest first, by turns
assert "z" not in {x["id"] for x in got["items"]}
# too few questions to fill the quiz: it is shorter
assert len(pick(page, P, [{"id": "a", "qs": [0, 1, 2, 3], "rank": 1}], target=.7)["items"]) == 4
assert not errors
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