def test_nutrition_info_set_equal(self):
"""Set one NutritionInfo equal to another.
"""
nutrient_a = NutritionInfo(
calories=50,
fat_calories=20,
fat=5,
carb=3,
sodium=10,
protein=0,
cholesterol=40,
)
nutrient_b = NutritionInfo(
calories=40,
fat_calories=30,
fat=10,
carb=0,
sodium=30,
protein=0,
cholesterol=5,
)
nutrient_b.set_equal(nutrient_a)
expected_total = NutritionInfo(
calories=50,
fat_calories=20,
fat=5,
carb=3,
sodium=10,
protein=0,
cholesterol=40,
)
self.assertTrue(nutrient_b.is_equal(expected_total))
def test_nutrition_info_string(self):
"""Format NutritionInfo as a string.
"""
nutrient = NutritionInfo(
calories = 50,
fat_calories = 20,
fat = 5,
carb = 3,
sodium = 10,
protein = 0,
cholesterol = 40,
)
self.assertEqual(str(nutrient), '50 calories')
self.assertEqual(nutrient.full_string(),
"50 calories (20 from fat) 5g fat, 3g carbs, 10mg sodium, 0g protein, 40mg cholesterol")
def test_nutrition_info_is_empty(self):
"""Check if NutritionInfo is empty.
"""
empty_nutrient = NutritionInfo(
calories = 0,
fat_calories = 0,
fat = 0,
carb = 0,
sodium = 0,
protein = 0,
cholesterol = 0,
)
self.assertTrue(empty_nutrient.is_empty())
non_empty_nutrient = NutritionInfo(
calories = 0,
fat_calories = 0,
fat = 0,
carb = 0,
sodium = 10,
protein = 0,
cholesterol = 0,
)
self.assertFalse(non_empty_nutrient.is_empty())