188 lines
7.8 KiB
Python
188 lines
7.8 KiB
Python
from _decimal import Decimal
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from django.contrib import auth
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from django_scopes import scopes_disabled
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from cookbook.helper.unit_conversion_helper import UnitConversionHelper, ConversionException
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from cookbook.models import Unit, Food, Ingredient, UnitConversion
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def test_base_converter(space_1):
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uch = UnitConversionHelper(space_1)
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assert abs(uch.convert_from_to('g', 'kg', 1234) - Decimal(1.234)) < 0.0001
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assert abs(uch.convert_from_to('kg', 'pound', 2) - Decimal(4.40924)) < 0.00001
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assert abs(uch.convert_from_to('kg', 'g', 1) - Decimal(1000)) < 0.00001
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assert abs(uch.convert_from_to('imperial_gallon', 'gallon', 1000) - Decimal(1200.95104)) < 0.00001
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assert abs(uch.convert_from_to('tbsp', 'ml', 20) - Decimal(295.73549)) < 0.00001
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try:
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assert uch.convert_from_to('kg', 'tbsp', 2) == 1234
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assert False
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except ConversionException:
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assert True
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try:
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assert uch.convert_from_to('kg', 'g2', 2) == 1234
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assert False
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except ConversionException:
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assert True
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def test_unit_conversions(space_1, space_2, u1_s1):
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with scopes_disabled():
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uch = UnitConversionHelper(space_1)
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uch_space_2 = UnitConversionHelper(space_2)
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unit_gram = Unit.objects.create(name='gram', base_unit='g', space=space_1)
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unit_kg = Unit.objects.create(name='kg', base_unit='kg', space=space_1)
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unit_pcs = Unit.objects.create(name='pcs', base_unit='', space=space_1)
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unit_floz1 = Unit.objects.create(name='fl. oz 1', base_unit='imperial_fluid_ounce', space=space_1) # US and UK use different volume systems (US vs imperial)
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unit_floz2 = Unit.objects.create(name='fl. oz 2', base_unit='fluid_ounce', space=space_1)
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unit_fantasy = Unit.objects.create(name='Fantasy Unit', base_unit='', space=space_1)
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food_1 = Food.objects.create(name='Test Food 1', space=space_1)
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food_2 = Food.objects.create(name='Test Food 2', space=space_1)
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print('\n----------- TEST BASE CONVERSIONS - GRAM ---------------')
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ingredient_food_1_gram = Ingredient.objects.create(
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food=food_1,
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unit=unit_gram,
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amount=100,
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space=space_1,
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)
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conversions = uch.get_conversions(ingredient_food_1_gram)
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print(conversions)
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assert len(conversions) == 2
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assert next(x for x in conversions if x.unit == unit_kg) is not None
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assert abs(next(x for x in conversions if x.unit == unit_kg).amount - Decimal(0.1)) < 0.0001
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print('\n----------- TEST BASE CONVERSIONS - VOLUMES ---------------')
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ingredient_food_1_floz1 = Ingredient.objects.create(
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food=food_1,
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unit=unit_floz1,
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amount=100,
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space=space_1,
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)
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conversions = uch.get_conversions(ingredient_food_1_floz1)
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assert len(conversions) == 2
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assert next(x for x in conversions if x.unit == unit_floz2) is not None
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assert abs(next(x for x in conversions if x.unit == unit_floz2).amount - Decimal(96.07599404038842)) < 0.001 # TODO validate value
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print(conversions)
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unit_pint = Unit.objects.create(name='pint', base_unit='pint', space=space_1)
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conversions = uch.get_conversions(ingredient_food_1_floz1)
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assert len(conversions) == 3
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assert next(x for x in conversions if x.unit == unit_pint) is not None
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assert abs(next(x for x in conversions if x.unit == unit_pint).amount - Decimal(6.004749627524276)) < 0.001 # TODO validate value
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print(conversions)
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print('\n----------- TEST BASE CUSTOM CONVERSION - TO CUSTOM CONVERSION ---------------')
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UnitConversion.objects.create(
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base_amount=1000,
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base_unit=unit_gram,
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converted_amount=1337,
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converted_unit=unit_fantasy,
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space=space_1,
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created_by=auth.get_user(u1_s1),
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)
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conversions = uch.get_conversions(ingredient_food_1_gram)
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assert len(conversions) == 3
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assert next(x for x in conversions if x.unit == unit_fantasy) is not None
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assert abs(next(x for x in conversions if x.unit == unit_fantasy).amount - Decimal('133.700')) < 0.001 # TODO validate value
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print(conversions)
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print('\n----------- TEST CUSTOM CONVERSION - NO PCS ---------------')
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ingredient_food_1_pcs = Ingredient.objects.create(
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food=food_1,
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unit=unit_pcs,
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amount=5,
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space=space_1,
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)
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ingredient_food_2_pcs = Ingredient.objects.create(
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food=food_2,
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unit=unit_pcs,
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amount=5,
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space=space_1,
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)
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assert len(uch.get_conversions(ingredient_food_1_pcs)) == 1
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assert len(uch.get_conversions(ingredient_food_2_pcs)) == 1
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print(uch.get_conversions(ingredient_food_1_pcs))
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print(uch.get_conversions(ingredient_food_2_pcs))
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print('\n----------- TEST CUSTOM CONVERSION - PCS TO MULTIPLE BASE ---------------')
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uc1 = UnitConversion.objects.create(
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base_amount=1,
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base_unit=unit_pcs,
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converted_amount=200,
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converted_unit=unit_gram,
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food=food_1,
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space=space_1,
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created_by=auth.get_user(u1_s1),
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)
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conversions = uch.get_conversions(ingredient_food_1_pcs)
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assert len(conversions) == 3
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assert abs(next(x for x in conversions if x.unit == unit_gram).amount - Decimal(1000)) < 0.0001
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assert abs(next(x for x in conversions if x.unit == unit_kg).amount - Decimal(1)) < 0.0001
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print(conversions)
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assert len(uch.get_conversions(ingredient_food_2_pcs)) == 1
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print(uch.get_conversions(ingredient_food_2_pcs))
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print('\n----------- TEST CUSTOM CONVERSION - CONVERT MULTI STEP ---------------')
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# TODO add test for multi step conversion ... do I even do or want to support this ?
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print('\n----------- TEST CUSTOM CONVERSION - REVERSE CONVERSION ---------------')
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uc2 = UnitConversion.objects.create(
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base_amount=200,
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base_unit=unit_gram,
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converted_amount=1,
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converted_unit=unit_pcs,
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food=food_2,
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space=space_1,
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created_by=auth.get_user(u1_s1),
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)
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conversions = uch.get_conversions(ingredient_food_1_pcs)
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assert len(conversions) == 3
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assert abs(next(x for x in conversions if x.unit == unit_gram).amount - Decimal(1000)) < 0.0001
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assert abs(next(x for x in conversions if x.unit == unit_kg).amount - Decimal(1)) < 0.0001
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print(conversions)
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conversions = uch.get_conversions(ingredient_food_2_pcs)
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assert len(conversions) == 3
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assert abs(next(x for x in conversions if x.unit == unit_gram).amount - Decimal(1000)) < 0.0001
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assert abs(next(x for x in conversions if x.unit == unit_kg).amount - Decimal(1)) < 0.0001
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print(conversions)
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print('\n----------- TEST SPACE SEPARATION ---------------')
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uc2.space = space_2
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uc2.save()
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conversions = uch.get_conversions(ingredient_food_2_pcs)
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assert len(conversions) == 1
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print(conversions)
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conversions = uch_space_2.get_conversions(ingredient_food_1_gram)
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assert len(conversions) == 1
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assert not any(x for x in conversions if x.unit == unit_kg)
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print(conversions)
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unit_kg_space_2 = Unit.objects.create(name='kg', base_unit='kg', space=space_2)
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conversions = uch_space_2.get_conversions(ingredient_food_1_gram)
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assert len(conversions) == 2
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assert not any(x for x in conversions if x.unit == unit_kg)
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assert next(x for x in conversions if x.unit == unit_kg_space_2) is not None
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assert abs(next(x for x in conversions if x.unit == unit_kg_space_2).amount - Decimal(0.1)) < 0.0001
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print(conversions)
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