public void Equals_Should_Return_True_For_CookedFood_With_Equal_Properties()
{
var bakedApple1 = new CookedFood(100, "Apple", FoodGroup.Fruit, "Baked");
var bakedApple2 = new CookedFood(100, "Apple", FoodGroup.Fruit, "Baked");
Assert.IsTrue(bakedApple1.Equals(bakedApple2));
}
public void DerivedType_ObjectEquals_CookedFoodWithSameNameSameTypeSameCookingMethod_ExpectEquality()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
Assert.IsTrue(banana1.Equals(banana2));
}
public void Inequality_Operator_Should_Return_True_For_CookedFood_With_Different_Properties()
{
var apple = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
var banana = new CookedFood(200, "banana", FoodGroup.Fruit, "Baked");
Assert.IsTrue(apple != banana);
}
public void Inequality_Operator_Should_Return_False_For_CookedFood_With_Equal_Properties()
{
var apple1 = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
var apple2 = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
Assert.IsFalse(apple1 != apple2);
}
public void GetHashCode_Should_Return_The_Same_Hashes_For_CookedFood_With_Equal_Properties()
{
var bakedApple1 = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
var bakedApple2 = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
Assert.AreEqual(bakedApple1.GetHashCode(), bakedApple2.GetHashCode());
}
public void GetHashCode_Should_Return_The_Same_Hashes_For_CookedFood_With_Different_Properties()
{
var bakedApple = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
var bakedBanana = new CookedFood(100, "banana", FoodGroup.Fruit, "Baked");
Assert.AreNotEqual(bakedApple.GetHashCode(), bakedBanana.GetHashCode());
}
public void DerivedType_EqualityOperator_CookedFoodWithDifferentNameSameTypeDifferentCookingMethod_ExpectInequality()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("Pie", Shared.FoodGroup.Fruit, "Fried");
Assert.IsFalse(banana1 == banana2);
}
public void Equals_Should_Return_False_For_CookedFood_With_Different_Properties()
{
var bakedApple = new CookedFood(100, "Apple", FoodGroup.Fruit, "Baked");
var bakedBanana = new CookedFood(100, "banana", FoodGroup.Fruit, "Baked");
Assert.IsFalse(bakedApple.Equals(bakedBanana));
}
public void DerivedType_ObjectEquals_CookedFoodWithNameCapitalizationDifference_ExpectEquality()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("banAna", Shared.FoodGroup.Fruit, "Baked");
Assert.IsTrue(banana1.Equals(banana2));
}
public void DerivedType_ObjectEquals_CookedFoodWithDifferentNameDifferentTypeDifferentCookingMethod_ExpectInequality()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("Pie", Shared.FoodGroup.Sweets, "Fried");
Assert.IsFalse(banana1.Equals(banana2));
}
public void DerivedType_ObjectEquals_EqualFoods_ExpectOrderDoesntMatter()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
bool equals1 = banana1.Equals(banana2);
bool equals2 = banana2.Equals(banana1);
Assert.AreEqual(equals1, equals2);
}
public void DerivedType_GetHashCode_EquivalentItems_ExpectEqualHashCodes()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
int b1hc = banana1.GetHashCode();
int b2hc = banana2.GetHashCode();
Assert.AreEqual(b1hc, b2hc);
}
public void DerivedType_InequalityOperator_InequalFoods_ExpectOrderDoesntMatter()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("Pie", Shared.FoodGroup.Sweets, "Fried");
bool equals1 = banana1 != banana2;
bool equals2 = banana2 != banana1;
Assert.AreEqual(equals1, equals2);
}
public void DerivedType_InequalityOperator_InequalValues_ExpectOppositeOfEqualityOperator()
{
CookedFood banana1 = new CookedFood("Banana", Shared.FoodGroup.Fruit, "Baked");
CookedFood banana2 = new CookedFood("Pie", Shared.FoodGroup.Sweets, "Fried");
bool equalityOperator = banana1 == banana2;
bool inequalityOperator = banana1 != banana2;
Assert.AreNotEqual(equalityOperator, inequalityOperator);
}
public void HasSet_Should_Have_Two_CookedFood_When_They_Have_Different_HashCodes()
{
var foodItem1 = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
var foodItem2 = new CookedFood(100, "banana", FoodGroup.Fruit, "Baked");
var hashSet = new HashSet <CookedFood>
{
foodItem1, foodItem2
};
Assert.AreNotEqual(foodItem1.GetHashCode(), foodItem2.GetHashCode());
Assert.AreEqual(hashSet.Count, 2);
}
public void HashSet_Should_Have_Only_One_CookedFood_Despite_Inserting_Two_With_The_Same_HashCode()
{
var apple1 = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
var apple2 = new CookedFood(100, "apple", FoodGroup.Fruit, "Baked");
var hashSet = new HashSet <CookedFood>
{
apple1, apple2
};
Assert.AreEqual(apple1.GetHashCode(), apple2.GetHashCode());
Assert.AreEqual(hashSet.Count, 1);
}
public override bool Equals(object obj)
{
if (!base.Equals(obj))
{
return(false);
}
CookedFood rhs = obj as CookedFood;
if (rhs == null)
{
return(false);
}
return(this.cookingMethod == rhs.cookingMethod);
}
//
static void Main(string[] args)
{
Console.WriteLine("Equality Implementation for Reference Type:\n");
Food apple = new Food("apple", FoodType.Fruit);
//Console.WriteLine(apple);
CookedFood stewedApple = new CookedFood("stewed", "apple", FoodType.Fruit);
//Console.WriteLine(stewedApple);
CookedFood bakedApple = new CookedFood("baked", "apple", FoodType.Fruit);
CookedFood stewedApple2 = new CookedFood("stewed", "apple", FoodType.Fruit);
Food apple2 = new Food("apple", FoodType.Fruit);
DisplayWhetherEqual(apple, stewedApple);
DisplayWhetherEqual(stewedApple, bakedApple);
DisplayWhetherEqual(stewedApple, stewedApple2);
DisplayWhetherEqual(apple, apple2);
DisplayWhetherEqual(apple, apple);
Console.WriteLine("\nPlease enter any key to exit...");
Console.ReadKey();
}
