def test_conversion_dict_tsp(self):
"""The script chooses the correction conversion_dict for volume"""
recipe = Recipe.objects.get(rating=3)
ingredient = recipe.ingredients.get(name="pineapple juice")
choose_dict = UnitShifter().set_conversion_dict(ingredient)
self.assertEqual(choose_dict.get('cup'), 48)
print "This thing can tell volume from weight."
def test_conversion_dict_oz(self):
"""The script chooses the correction conversion_dict for weight"""
recipe = Recipe.objects.get(rating=3)
ingredient = recipe.ingredients.get(name="pork butt")
choose_dict = UnitShifter().set_conversion_dict(ingredient)
self.assertEqual(choose_dict.get('pound'), 16)
print "This thing can tell weight from volume."
def test_disallow_negatives(self):
"""Nothing runs if ingredient quantity is negative"""
recipe = Recipe.objects.first()
u_s = UnitShifter()
try:
u_s.scale_recipe(recipe, -3)
assert False
except:
assert True
print "Good job. A recipe with a new positive serving size."
def test_by_volume_high_integer(self):
"""Method by_volume handles a high integer properly"""
recipe = Recipe.objects.get(rating=3)
new_serving_size = 1475822
ingredient = recipe.ingredients.get(name="pineapple juice")
volume = UnitShifter().set_conversion_dict(ingredient)
total_tsp = UnitShifter().by_weight(recipe, ingredient, new_serving_size, volume)
self.assertEqual(total_tsp, 1475822)
print "The by_volume method can handle a large int."
def test_by_volume_less_than_one(self):
"""Method by_volume properly handles a quantity of < 1"""
recipe = Recipe.objects.get(rating=3)
new_serving_size = 4
ingredient = recipe.ingredients.get(name="onion")
volume = UnitShifter().set_conversion_dict(ingredient)
total_tsp = UnitShifter().by_weight(recipe, ingredient, new_serving_size, volume)
self.assertEqual(total_tsp, .8)
print "The by_volume method can handle < 1"
def test_by_weight_high_integer(self):
"""Method by_weight handles a high integer properly"""
recipe = Recipe.objects.get(rating=3)
new_serving_size = 32478
ingredient = recipe.ingredients.get(name="pork butt")
weight = UnitShifter().set_conversion_dict(ingredient)
total_oz = UnitShifter().by_weight(recipe, ingredient, new_serving_size, weight)
self.assertEqual(total_oz, 64956)
print "The by_weight method can handle a large int."
def test_by_weight_less_than_one(self):
"""Method by_weight properly handles an ingredient quantity of < 1"""
recipe = Recipe.objects.get(rating=3)
new_serving_size = 8
ingredient = recipe.ingredients.get(name="Spam")
weight = UnitShifter().set_conversion_dict(ingredient)
total_oz = UnitShifter().by_weight(recipe, ingredient, new_serving_size, weight)
self.assertEqual(total_oz, .8)
print "The by_weight method can handle < 1"
def test_method_conversion_dict_oz(self):
"""The script applies the oz conversion_dict to the by_weight method"""
recipe = Recipe.objects.get(rating=3)
new_serving_size = 8
ingredient = recipe.ingredients.get(name="pork butt")
weight = UnitShifter().set_conversion_dict(ingredient)
total_oz = UnitShifter().by_weight(recipe, ingredient, new_serving_size, weight)
self.assertEqual(total_oz, 256)
print "Holy crap. The oz dictionary to the right place."
def test_method_conversion_dict_tsp(self):
"""The script applies the tsp conversion_dict to the by_volume method"""
recipe = Recipe.objects.get(rating=3)
new_serving_size = 8
ingredient = recipe.ingredients.get(name="pineapple juice")
volume = UnitShifter().set_conversion_dict(ingredient)
total_tsp = UnitShifter().by_volume(recipe, ingredient, new_serving_size, volume)
self.assertEqual(total_tsp, 384)
print "Holy crap. The tsp dictionary to the right place."
def test_scale_volume_small_integer(self):
"""Method scaled_from_tsp properly handles a small integer"""
total_tsp = 18
units = UnitShifter().scaled_from_tsp(total_tsp)
self.assertEqual(units[0][0], 'tablespoon')
self.assertEqual(units[0][1], 6)
def test_scale_volume_less_than_one(self):
"""Method scaled_from_tsp properly handles a value < 1"""
total_tsp = .5
units = UnitShifter().scaled_from_tsp(total_tsp)
self.assertEqual(units[0][0], 'teaspoon')
self.assertEqual(units[0][1], .5)
def test_ordered_dict_tuples(self):
"""Values in OrderedDict are associated correctly"""
u_s = UnitShifter()
self.assertEqual(u_s.conversion_dict_tsp[0][0], 'teaspoon')
self.assertEqual(u_s.conversion_dict_tsp[0][1], 1)
print "The tuple values in the OrderedDict are in the correct order"
def test_scale_weight_less_than_one(self):
"""Method scaled_from_oz properly handles a value < 1"""
total_oz = .5
units = UnitShifter().scaled_from_oz(total_oz)
self.assertEqual(units[0][0], 'ounce')
self.assertEqual(units[0][1], .5)
def test_ordered_dict_ordering(self):
"""Items in OrderedDict are ordered correctly"""
u_s = UnitShifter()
self.assertEqual(u_s.conversion_dict_tsp[0][0], 'teaspoon')
self.assertEqual(u_s.conversion_dict_tsp[1][0], 'tablespoon')
self.assertEqual(u_s.conversion_dict_tsp[5][0], 'gallon')
print "The OrderedDict is ordered correctly."
def test_scale_weight_large_integer(self):
"""Method scaled_from_oz properly handles a large integer"""
total_oz = 329072970129346507
units = UnitShifter().scaled_from_oz(total_oz)
self.assertEqual(units[0][0], 'pound')
self.assertEqual(units[0][1], 20567060633084156)
self.assertEqual(units[1][0], 'ounce')
self.assertEqual(units[1][1], 11)
def test_scale_weight_small_integer(self):
"""Method scaled_from_oz properly handles a small integer"""
total_oz = 21
units = UnitShifter().scaled_from_oz(total_oz)
self.assertEqual(units[0][0], 'pound')
self.assertEqual(units[0][1], 1)
self.assertEqual(units[1][0], 'ounce')
self.assertEqual(units[1][1], 5)
def test_scale_volume_large_integer(self):
"""Method scaled_from_tsp properly handles a large integer"""
total_tsp = 14785290
units = UnitShifter().scaled_from_tsp(total_tsp)
self.assertEqual(units[0][0], 'gallon')
self.assertEqual(units[0][1], 19251)
self.assertEqual(units[1][0], 'quart')
self.assertEqual(units[1][1], 2)
self.assertEqual(units[2][0], 'pint')
self.assertEqual(units[2][1], 2)
self.assertEqual(units[3][0], 'tablespoon')
self.assertEqual(units[3][1], 14)
self.assertEqual(units[4][0], 'teaspoon')
self.assertEqual(units[4][1], 1)
