forked from cartsnitch/cartsnitch
Coupon Carl
586 lines
21 KiB
Python
586 lines
21 KiB
Python
"""Tests for the Meijer scraper.
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These tests mock Playwright to avoid requiring real Meijer credentials
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or network access. They verify the scraper's control flow, session handling,
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date filtering, and error resilience.
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"""
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from datetime import UTC, datetime, timedelta
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from unittest.mock import AsyncMock, MagicMock, patch
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import pytest
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from receiptwitness.scrapers.base import RawReceipt, SessionData
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from receiptwitness.scrapers.meijer import (
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DEFAULT_TIMEZONE,
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DEFAULT_USER_AGENT,
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DEFAULT_VIEWPORT,
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MEIJER_BASE,
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MEIJER_LOGIN_PAGE,
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MEIJER_MPERKS_HOME,
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MEIJER_PURCHASE_HISTORY,
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MeijerScraper,
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)
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@pytest.fixture
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def scraper():
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return MeijerScraper()
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@pytest.fixture
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def valid_session():
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return SessionData(
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cookies=[
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{"name": "meijer_session", "value": "abc123", "domain": ".meijer.com", "path": "/"}
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],
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user_agent=DEFAULT_USER_AGENT,
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created_at=datetime.now(UTC),
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expires_at=datetime.now(UTC) + timedelta(hours=4),
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)
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@pytest.fixture
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def expired_session():
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return SessionData(
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cookies=[
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{"name": "meijer_session", "value": "expired", "domain": ".meijer.com", "path": "/"}
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],
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user_agent=DEFAULT_USER_AGENT,
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created_at=datetime.now(UTC) - timedelta(hours=8),
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expires_at=datetime.now(UTC) - timedelta(hours=4),
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)
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class TestMeijerScraperConstants:
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def test_base_url(self):
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assert MEIJER_BASE == "https://www.meijer.com"
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def test_login_page(self):
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assert MEIJER_LOGIN_PAGE == "https://www.meijer.com/shopping/login.html"
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def test_mperks_home(self):
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assert MEIJER_MPERKS_HOME == "https://www.meijer.com/mperks.html"
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def test_purchase_history_url(self):
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assert (
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MEIJER_PURCHASE_HISTORY == "https://www.meijer.com/bin/meijer/profile/purchasehistory"
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)
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def test_default_user_agent_is_chrome(self):
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assert "Chrome" in DEFAULT_USER_AGENT
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assert "Windows" in DEFAULT_USER_AGENT
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def test_default_viewport_hd(self):
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assert DEFAULT_VIEWPORT == {"width": 1920, "height": 1080}
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def test_default_timezone(self):
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assert DEFAULT_TIMEZONE == "America/Detroit"
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class TestCheckSession:
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@pytest.mark.asyncio
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async def test_expired_session_returns_false(self, scraper, expired_session):
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result = await scraper.check_session(expired_session)
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assert result is False
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@pytest.mark.asyncio
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async def test_no_expiry_checks_via_browser(self, scraper):
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session = SessionData(
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cookies=[],
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user_agent=DEFAULT_USER_AGENT,
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created_at=datetime.now(UTC),
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expires_at=None,
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)
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mock_page = AsyncMock()
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mock_page.url = "https://www.meijer.com/mperks.html"
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mock_response = MagicMock()
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mock_response.ok = True
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mock_page.goto = AsyncMock(return_value=mock_response)
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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with patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw:
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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result = await scraper.check_session(session)
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assert result is True
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@pytest.mark.asyncio
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async def test_session_redirected_to_login_returns_false(self, scraper):
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session = SessionData(
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cookies=[],
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user_agent=DEFAULT_USER_AGENT,
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created_at=datetime.now(UTC),
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expires_at=None,
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)
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mock_page = AsyncMock()
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mock_page.url = "https://www.meijer.com/shopping/login.html?redirect=mperks"
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mock_response = MagicMock()
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mock_response.ok = True
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mock_page.goto = AsyncMock(return_value=mock_response)
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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with patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw:
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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result = await scraper.check_session(session)
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assert result is False
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class TestLogin:
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@pytest.mark.asyncio
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async def test_login_returns_session_data(self, scraper):
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mock_page = AsyncMock()
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mock_page.url = "https://www.meijer.com/mperks.html"
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# Mock locator chain
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mock_email = AsyncMock()
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mock_password = AsyncMock()
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mock_button = AsyncMock()
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mock_page.locator = MagicMock(side_effect=[mock_email, mock_password, mock_button])
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mock_page.wait_for_url = AsyncMock()
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.cookies = AsyncMock(
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return_value=[
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{"name": "meijer_session", "value": "test456", "domain": ".meijer.com", "path": "/"}
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]
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)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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with (
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patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
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patch.object(scraper, "human_delay", new_callable=AsyncMock),
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):
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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session = await scraper.login("user@test.com", "password123")
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assert isinstance(session, SessionData)
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assert len(session.cookies) == 1
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assert session.cookies[0]["name"] == "meijer_session"
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assert session.user_agent == DEFAULT_USER_AGENT
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assert session.expires_at is not None
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# Meijer sessions last 4 hours
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assert session.expires_at > session.created_at + timedelta(hours=3)
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class TestScrapeReceipts:
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@pytest.mark.asyncio
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async def test_scrape_returns_receipts(self, scraper, valid_session):
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mock_api_response = AsyncMock()
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mock_api_response.ok = True
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mock_api_response.status = 200
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mock_api_response.json = AsyncMock(
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return_value={
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"transactions": [
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{
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"transactionId": "TXN-001",
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"transactionDate": "2026-03-10T14:00:00Z",
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"storeNumber": "42",
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},
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{
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"transactionId": "TXN-002",
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"transactionDate": "2026-03-11T10:00:00Z",
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"storeNumber": "42",
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},
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]
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}
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)
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mock_detail_response = AsyncMock()
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mock_detail_response.ok = True
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mock_detail_response.json = AsyncMock(return_value={"items": []})
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mock_request = AsyncMock()
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mock_request.get = AsyncMock(
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side_effect=[mock_api_response, mock_detail_response, mock_detail_response]
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)
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mock_page = AsyncMock()
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mock_page.goto = AsyncMock()
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mock_page.request = mock_request
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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with (
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patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
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patch.object(scraper, "human_delay", new_callable=AsyncMock),
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):
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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receipts = await scraper.scrape_receipts(valid_session)
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assert len(receipts) == 2
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assert receipts[0].receipt_id == "TXN-001"
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assert receipts[1].receipt_id == "TXN-002"
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assert isinstance(receipts[0], RawReceipt)
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@pytest.mark.asyncio
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async def test_scrape_filters_by_date(self, scraper, valid_session):
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mock_api_response = AsyncMock()
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mock_api_response.ok = True
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mock_api_response.json = AsyncMock(
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return_value={
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"transactions": [
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{
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"transactionId": "TXN-OLD",
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"transactionDate": "2026-01-01T10:00:00Z",
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"storeNumber": "42",
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},
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{
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"transactionId": "TXN-NEW",
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"transactionDate": "2026-03-15T10:00:00Z",
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"storeNumber": "42",
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},
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]
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}
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)
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mock_detail_response = AsyncMock()
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mock_detail_response.ok = True
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mock_detail_response.json = AsyncMock(return_value={})
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mock_request = AsyncMock()
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mock_request.get = AsyncMock(side_effect=[mock_api_response, mock_detail_response])
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mock_page = AsyncMock()
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mock_page.goto = AsyncMock()
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mock_page.request = mock_request
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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since = datetime(2026, 3, 1, tzinfo=UTC)
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with (
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patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
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patch.object(scraper, "human_delay", new_callable=AsyncMock),
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):
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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receipts = await scraper.scrape_receipts(valid_session, since=since)
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assert len(receipts) == 1
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assert receipts[0].receipt_id == "TXN-NEW"
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@pytest.mark.asyncio
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async def test_scrape_handles_api_failure(self, scraper, valid_session):
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mock_api_response = AsyncMock()
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mock_api_response.ok = False
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mock_api_response.status = 500
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mock_api_response.status_text = "Internal Server Error"
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mock_request = AsyncMock()
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mock_request.get = AsyncMock(return_value=mock_api_response)
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mock_page = AsyncMock()
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mock_page.goto = AsyncMock()
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mock_page.request = mock_request
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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with (
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patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
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patch.object(scraper, "human_delay", new_callable=AsyncMock),
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):
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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receipts = await scraper.scrape_receipts(valid_session)
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assert receipts == []
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@pytest.mark.asyncio
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async def test_scrape_handles_unexpected_response(self, scraper, valid_session):
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mock_api_response = AsyncMock()
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mock_api_response.ok = True
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mock_api_response.json = AsyncMock(return_value="not a dict")
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mock_request = AsyncMock()
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mock_request.get = AsyncMock(return_value=mock_api_response)
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mock_page = AsyncMock()
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mock_page.goto = AsyncMock()
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mock_page.request = mock_request
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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with (
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patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
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patch.object(scraper, "human_delay", new_callable=AsyncMock),
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):
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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receipts = await scraper.scrape_receipts(valid_session)
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assert receipts == []
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@pytest.mark.asyncio
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async def test_scrape_alternative_field_names(self, scraper, valid_session):
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"""Meijer may use 'purchaseHistory' instead of 'transactions'."""
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mock_api_response = AsyncMock()
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mock_api_response.ok = True
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mock_api_response.json = AsyncMock(
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return_value={
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"purchaseHistory": [
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{
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"receiptId": "MJ-ALT-001",
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"purchaseDate": "2026-03-10T14:00:00Z",
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"storeId": "99",
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}
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]
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}
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)
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mock_detail_response = AsyncMock()
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mock_detail_response.ok = True
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mock_detail_response.json = AsyncMock(return_value={})
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mock_request = AsyncMock()
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mock_request.get = AsyncMock(side_effect=[mock_api_response, mock_detail_response])
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mock_page = AsyncMock()
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mock_page.goto = AsyncMock()
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mock_page.request = mock_request
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
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with (
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patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
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patch.object(scraper, "human_delay", new_callable=AsyncMock),
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):
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mock_cm = AsyncMock()
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mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
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mock_cm.__aexit__ = AsyncMock(return_value=False)
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mock_apw.return_value = mock_cm
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receipts = await scraper.scrape_receipts(valid_session)
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assert len(receipts) == 1
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assert receipts[0].receipt_id == "MJ-ALT-001"
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@pytest.mark.asyncio
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async def test_scrape_skips_transactions_without_id(self, scraper, valid_session):
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mock_api_response = AsyncMock()
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mock_api_response.ok = True
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mock_api_response.json = AsyncMock(
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return_value={
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"transactions": [
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{"transactionDate": "2026-03-10T14:00:00Z"}, # no id
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{"transactionId": "TXN-VALID", "transactionDate": "2026-03-10T14:00:00Z"},
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]
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}
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)
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mock_detail_response = AsyncMock()
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mock_detail_response.ok = True
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mock_detail_response.json = AsyncMock(return_value={})
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mock_request = AsyncMock()
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mock_request.get = AsyncMock(side_effect=[mock_api_response, mock_detail_response])
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mock_page = AsyncMock()
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mock_page.goto = AsyncMock()
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mock_page.request = mock_request
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mock_context = AsyncMock()
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mock_context.new_page = AsyncMock(return_value=mock_page)
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mock_context.add_cookies = AsyncMock()
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mock_context.add_init_script = AsyncMock()
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mock_browser = AsyncMock()
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mock_browser.new_context = AsyncMock(return_value=mock_context)
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mock_context.browser = mock_browser
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mock_pw = AsyncMock()
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mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
|
|
|
|
with (
|
|
patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
|
|
patch.object(scraper, "human_delay", new_callable=AsyncMock),
|
|
):
|
|
mock_cm = AsyncMock()
|
|
mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
|
|
mock_cm.__aexit__ = AsyncMock(return_value=False)
|
|
mock_apw.return_value = mock_cm
|
|
|
|
receipts = await scraper.scrape_receipts(valid_session)
|
|
assert len(receipts) == 1
|
|
assert receipts[0].receipt_id == "TXN-VALID"
|
|
|
|
@pytest.mark.asyncio
|
|
async def test_scrape_receipt_detail_failure_returns_empty_detail(self, scraper, valid_session):
|
|
"""Receipt detail API failure should not crash the scraper."""
|
|
mock_api_response = AsyncMock()
|
|
mock_api_response.ok = True
|
|
mock_api_response.json = AsyncMock(
|
|
return_value={
|
|
"transactions": [
|
|
{
|
|
"transactionId": "TXN-DETAIL-FAIL",
|
|
"transactionDate": "2026-03-10T14:00:00Z",
|
|
"storeNumber": "42",
|
|
}
|
|
]
|
|
}
|
|
)
|
|
|
|
mock_detail_response = AsyncMock()
|
|
mock_detail_response.ok = False
|
|
mock_detail_response.status = 404
|
|
|
|
mock_request = AsyncMock()
|
|
mock_request.get = AsyncMock(side_effect=[mock_api_response, mock_detail_response])
|
|
|
|
mock_page = AsyncMock()
|
|
mock_page.goto = AsyncMock()
|
|
mock_page.request = mock_request
|
|
|
|
mock_context = AsyncMock()
|
|
mock_context.new_page = AsyncMock(return_value=mock_page)
|
|
mock_context.add_cookies = AsyncMock()
|
|
mock_context.add_init_script = AsyncMock()
|
|
mock_browser = AsyncMock()
|
|
mock_browser.new_context = AsyncMock(return_value=mock_context)
|
|
mock_context.browser = mock_browser
|
|
|
|
mock_pw = AsyncMock()
|
|
mock_pw.chromium.launch = AsyncMock(return_value=mock_browser)
|
|
|
|
with (
|
|
patch("receiptwitness.scrapers.meijer.async_playwright") as mock_apw,
|
|
patch.object(scraper, "human_delay", new_callable=AsyncMock),
|
|
):
|
|
mock_cm = AsyncMock()
|
|
mock_cm.__aenter__ = AsyncMock(return_value=mock_pw)
|
|
mock_cm.__aexit__ = AsyncMock(return_value=False)
|
|
mock_apw.return_value = mock_cm
|
|
|
|
receipts = await scraper.scrape_receipts(valid_session)
|
|
assert len(receipts) == 1
|
|
assert receipts[0].receipt_id == "TXN-DETAIL-FAIL"
|
|
assert receipts[0].raw_data.get("detail") == {}
|
|
|
|
|
|
class TestParseReceipt:
|
|
def test_parse_receipt_delegates_to_parser(self, scraper):
|
|
raw = RawReceipt(
|
|
receipt_id="TXN-001",
|
|
purchase_date="2026-03-10",
|
|
raw_data={
|
|
"detail": {
|
|
"items": [
|
|
{
|
|
"description": "TEST ITEM",
|
|
"price": 5.00,
|
|
"extendedPrice": 5.00,
|
|
}
|
|
],
|
|
"total": 5.00,
|
|
}
|
|
},
|
|
)
|
|
result = scraper.parse_receipt(raw)
|
|
assert result["receipt_id"] == "TXN-001"
|
|
assert len(result["items"]) == 1
|
|
|
|
def test_receipt_detail_failure_returns_empty(self, scraper):
|
|
raw = RawReceipt(
|
|
receipt_id="TXN-FAIL",
|
|
purchase_date="2026-03-10",
|
|
raw_data={"total": 10.00, "detail": {}},
|
|
)
|
|
result = scraper.parse_receipt(raw)
|
|
assert result["receipt_id"] == "TXN-FAIL"
|
|
assert result["items"] == []
|