Initial commit.

tests/test_receipt.py

@@ -0,0 +1,118 @@
+from copy import deepcopy
+from decimal import Decimal
+import json
+from pathlib import Path
+
+import pytest
+
+from ocado_grocy.receipt import ImportError, number, parse_document, parse_ocado_order
+
+FIXTURE = Path(__file__).parent / 'fixtures' / 'history_receipt.json'
+
+
+def api_data():
+    return json.loads(FIXTURE.read_text())
+
+
+def test_synthetic_api_receipt():
+    receipt = parse_ocado_order(api_data())
+    assert receipt.order_id == '1000000000001'
+    assert receipt.purchased_date == '2020-01-02'
+    assert len(receipt.items) == 21
+    assert sum(i.quantity for i in receipt.items) == 23
+    assert sum(i.total for i in receipt.items) == Decimal('28.75')
+    lettuce = next(i for i in receipt.items if 'Lettuce' in i.name)
+    assert lettuce.best_before == '2020-01-05'
+    assert lettuce.metadata['storage_type'] == 'FRIDGE'
+    cloths = next(i for i in receipt.items if 'Cleaning Cloths' in i.name)
+    assert cloths.quantity == 2
+    assert cloths.unit_price == Decimal('1.25')
+    assert cloths.best_before is None
+
+
+def test_order_identity_and_delivery_status():
+    with pytest.raises(ImportError,match='does not match'):
+        parse_ocado_order(api_data(),expected_order_id='123')
+    data=api_data()
+    data['entities']['order'][data['result']]['status']='CONFIRMED'
+    with pytest.raises(ImportError,match='not delivered'):
+        parse_ocado_order(data)
+
+
+def test_summary_detects_partial_receipt():
+    data=api_data()
+    data['entities']['order'][data['result']]['groupedProducts']['products'].pop()
+    with pytest.raises(ImportError,match='quantities'):
+        parse_ocado_order(data)
+
+
+def test_summary_detects_wrong_price():
+    data=api_data()
+    data['entities']['order'][data['result']]['groupedProducts']['products'][0]['prices']['offered']['amount']='9.99'
+    with pytest.raises(ImportError,match='prices'):
+        parse_ocado_order(data)
+
+
+def test_only_accepted_substitutes_are_imported():
+    data=api_data()
+    order=data['entities']['order'][data['result']]
+    original=order['groupedProducts']['products'].pop(0)
+    accepted={**deepcopy(original),'productId':'replacement','retailerProductId':'999','name':'Replacement bananas','status':'ACCEPTED'}
+    rejected={**deepcopy(original),'productId':'rejected','retailerProductId':'888','name':'Rejected bananas','status':'REJECTED'}
+    original['substitutes']=[accepted,rejected]
+    order['groupedProducts']['substitutes']=[original]
+    receipt=parse_ocado_order(data)
+    assert len(receipt.items)==21
+    assert any(i.product_id=='999' for i in receipt.items)
+    assert not any(i.product_id in {'888',original['retailerProductId']} for i in receipt.items)
+    assert next(i for i in receipt.items if i.product_id=='999').metadata['substituted_for']==original['name']
+
+
+def test_input_order_does_not_change_stable_line_order():
+    first=api_data()
+    second=deepcopy(first)
+    second['entities']['order'][second['result']]['groupedProducts']['products'].reverse()
+    assert parse_ocado_order(first)==parse_ocado_order(second)
+
+
+def test_discontinued_product_does_not_need_html_link():
+    data=api_data()
+    product=data['entities']['order'][data['result']]['groupedProducts']['products'][0]
+    product['isInCurrentCatalog']=False
+    receipt=parse_ocado_order(data)
+    assert any(i.product_id==product['retailerProductId'] for i in receipt.items)
+
+
+def test_purchase_date_is_local_delivery_date():
+    data=api_data()
+    data['entities']['order'][data['result']]['dates']['deliveryStartDate']='2026-09-01T23:30:00Z'
+    assert parse_ocado_order(data).purchased_date=='2026-09-02'
+
+
+@pytest.mark.parametrize('value',['NaN','Infinity','-1','nonsense',None])
+def test_invalid_numbers(value):
+    with pytest.raises(ImportError):number(value,'quantity')
+
+
+def test_free_and_weighted_items():
+    receipt=parse_document({'order_id':'1','items':[
+        {'name':'Free gift','quantity':1,'total':0},
+        {'name':'Apples','quantity':'0.75','total':'1.50'}]})
+    assert receipt.items[0].unit_price==0
+    assert receipt.items[1].unit_price==2
+
+
+def test_receipt_json_roundtrip():
+    receipt=parse_ocado_order(api_data())
+    assert parse_document(json.loads(json.dumps(receipt.export(),default=str)))==receipt
+
+
+def test_live_basket_cannot_be_mistaken_for_order():
+    with pytest.raises(ImportError,match='structure'):
+        parse_ocado_order({'data':{'basket':{'items':[{'name':'Not an order'}]}}})
+
+
+def test_non_gbp_order_rejected():
+    data=api_data()
+    data['entities']['order'][data['result']]['groupedProducts']['products'][0]['prices']['offered']['currency']='EUR'
+    with pytest.raises(ImportError,match='currency'):parse_ocado_order(data)