public void OptionEqualityValue()
{
// Option value type
var optionInt = Option <int> .Some(12);
var emptyOptionInt = Option <int> .None;
Assert.IsTrue(optionInt.Equals(12));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsTrue(optionInt.Equals((object)12));
Assert.IsFalse(optionInt.Equals(42));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(optionInt.Equals((object)42));
Assert.IsTrue(optionInt == 12);
Assert.IsTrue(12 == optionInt);
Assert.IsFalse(optionInt == 42);
Assert.IsTrue(optionInt != 42);
Assert.IsFalse(12 != optionInt);
Assert.IsFalse(emptyOptionInt.Equals(12));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(emptyOptionInt.Equals((object)12));
Assert.IsFalse(emptyOptionInt == 12);
Assert.IsFalse(12 == emptyOptionInt);
Assert.IsTrue(emptyOptionInt != 12);
Assert.IsTrue(15 != emptyOptionInt);
// Option reference type
var person1 = new Person("Test");
var optionPerson1 = Option <Person> .Some(person1);
var optionPerson2 = Option <Person> .Some(new Person("Test"));
var optionPerson3 = Option <Person> .Some(new Person("Test2"));
var emptyOptionPerson1 = Option <Person> .None;
Assert.IsTrue(optionPerson1.Equals(person1));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsTrue(optionPerson1.Equals((object)person1));
Assert.IsFalse(optionPerson1.Equals(new Person("Test2")));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(optionPerson1.Equals((object)new Person("Test2")));
Assert.IsTrue(optionPerson1 == person1);
Assert.IsTrue(person1 == optionPerson1);
Assert.IsFalse(optionPerson1 != person1);
Assert.IsFalse(person1 != optionPerson1);
Assert.IsTrue(optionPerson2.Equals(person1));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsTrue(optionPerson2.Equals((object)person1));
Assert.IsTrue(optionPerson2 == person1);
Assert.IsTrue(person1 == optionPerson2);
Assert.IsFalse(optionPerson2 != person1);
Assert.IsFalse(new Person("Test") != optionPerson2);
Assert.IsFalse(optionPerson3.Equals(person1));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(optionPerson3.Equals((object)person1));
Assert.IsFalse(optionPerson3 == person1);
Assert.IsFalse(person1 == optionPerson3);
Assert.IsTrue(optionPerson3 != person1);
Assert.IsTrue(person1 != optionPerson3);
Assert.IsFalse(emptyOptionPerson1.Equals(person1));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(emptyOptionPerson1.Equals((object)person1));
Assert.IsFalse(emptyOptionPerson1 == person1);
Assert.IsFalse(person1 == emptyOptionPerson1);
Assert.IsTrue(emptyOptionPerson1 != person1);
Assert.IsTrue(person1 != emptyOptionPerson1);
var person2 = new PersonNotEquatable("Test");
var person3 = new PersonNotEquatable("Test");
var optionPerson4 = Option <PersonNotEquatable> .Some(person2);
var optionPerson5 = Option <PersonNotEquatable> .Some(new PersonNotEquatable("Test"));
var emptyOptionPerson2 = Option <PersonNotEquatable> .None;
Assert.IsTrue(optionPerson4.Equals(person2));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsTrue(optionPerson4.Equals((object)person2));
Assert.IsFalse(optionPerson4.Equals(person3));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(optionPerson4.Equals((object)person3));
Assert.IsTrue(optionPerson4 == person2);
Assert.IsTrue(person2 == optionPerson4);
Assert.IsFalse(optionPerson4 != person2);
Assert.IsFalse(person2 != optionPerson4);
Assert.IsFalse(optionPerson5.Equals(person2));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(optionPerson5.Equals((object)person2));
Assert.IsFalse(optionPerson5 == person2);
Assert.IsFalse(person2 == optionPerson5);
Assert.IsTrue(optionPerson5 != person2);
Assert.IsTrue(person2 != optionPerson5);
Assert.IsFalse(emptyOptionPerson2.Equals(person2));
// ReSharper disable once SuspiciousTypeConversion.Global
Assert.IsFalse(emptyOptionPerson2.Equals((object)person2));
Assert.IsFalse(emptyOptionPerson2 == person2);
Assert.IsFalse(person2 == emptyOptionPerson2);
Assert.IsTrue(emptyOptionPerson2 != person2);
Assert.IsTrue(person2 != emptyOptionPerson2);
// With flatten
var embedOptionInt = Option <Option <int> > .Some(Option <int> .Some(12));
Assert.IsTrue(embedOptionInt == 12);
Assert.IsFalse(embedOptionInt == 42);
// On value type null is not a valid value consider implicitly casted to None
Assert.IsFalse(optionInt == null);
Assert.IsTrue(Option <int> .None == null);
// Equals with a null value => These cases are not possible as they
// suppose the option value is null which should never be the case!
Assert.IsFalse(optionPerson1 == null);
}
public void OptionEquality()
{
// Option value type
var optionInt1 = Option <int> .Some(12);
var optionInt2 = Option <int> .Some(12);
var optionInt3 = Option <int> .Some(42);
var emptyOptionInt1 = Option <int> .None;
var emptyOptionInt2 = Option <int> .None;
Assert.IsTrue(optionInt1.Equals(optionInt2));
Assert.IsTrue(optionInt2.Equals(optionInt1));
Assert.IsTrue(optionInt1 == optionInt2);
Assert.IsTrue(optionInt2 == optionInt1);
Assert.IsFalse(optionInt1 != optionInt2);
Assert.IsFalse(optionInt2 != optionInt1);
Assert.IsFalse(optionInt1.Equals(optionInt3));
Assert.IsFalse(optionInt3.Equals(optionInt1));
Assert.IsFalse(optionInt1 == optionInt3);
Assert.IsFalse(optionInt3 == optionInt1);
Assert.IsTrue(optionInt1 != optionInt3);
Assert.IsTrue(optionInt3 != optionInt1);
Assert.IsFalse(optionInt1.Equals(emptyOptionInt1));
Assert.IsFalse(emptyOptionInt1.Equals(optionInt1));
Assert.IsFalse(optionInt1 == emptyOptionInt1);
Assert.IsFalse(emptyOptionInt1 == optionInt1);
Assert.IsTrue(optionInt1 != emptyOptionInt1);
Assert.IsTrue(emptyOptionInt1 != optionInt1);
Assert.IsTrue(emptyOptionInt1.Equals(emptyOptionInt2));
Assert.IsTrue(emptyOptionInt2.Equals(emptyOptionInt1));
Assert.IsTrue(emptyOptionInt1 == emptyOptionInt2);
Assert.IsTrue(emptyOptionInt2 == emptyOptionInt1);
Assert.IsFalse(emptyOptionInt1 != emptyOptionInt2);
Assert.IsFalse(emptyOptionInt2 != emptyOptionInt1);
// Option reference type
var person1 = new Person("Test");
var optionPerson1 = Option <Person> .Some(person1);
var optionPerson2 = Option <Person> .Some(person1);
var optionPerson3 = Option <Person> .Some(new Person("Test"));
var optionPerson4 = Option <Person> .Some(new Person("Test2"));
var emptyOptionPerson1 = Option <Person> .None;
var emptyOptionPerson2 = Option <Person> .None;
Assert.IsTrue(optionPerson1.Equals(optionPerson2));
Assert.IsTrue(optionPerson2.Equals(optionPerson1));
Assert.IsTrue(optionPerson1 == optionPerson2);
Assert.IsTrue(optionPerson2 == optionPerson1);
Assert.IsFalse(optionPerson1 != optionPerson2);
Assert.IsFalse(optionPerson2 != optionPerson1);
Assert.IsTrue(optionPerson1.Equals(optionPerson3));
Assert.IsTrue(optionPerson3.Equals(optionPerson1));
Assert.IsTrue(optionPerson1 == optionPerson3);
Assert.IsTrue(optionPerson3 == optionPerson1);
Assert.IsFalse(optionPerson1 != optionPerson3);
Assert.IsFalse(optionPerson3 != optionPerson1);
Assert.IsFalse(optionPerson1.Equals(optionPerson4));
Assert.IsFalse(optionPerson4.Equals(optionPerson1));
Assert.IsFalse(optionPerson1 == optionPerson4);
Assert.IsFalse(optionPerson4 == optionPerson1);
Assert.IsTrue(optionPerson1 != optionPerson4);
Assert.IsTrue(optionPerson4 != optionPerson1);
Assert.IsFalse(optionPerson2.Equals(emptyOptionPerson1));
Assert.IsFalse(emptyOptionPerson1.Equals(optionPerson2));
Assert.IsFalse(emptyOptionPerson1 == optionPerson2);
Assert.IsFalse(optionPerson2 == emptyOptionPerson1);
Assert.IsTrue(optionPerson1 != emptyOptionPerson1);
Assert.IsTrue(emptyOptionPerson1 != optionPerson1);
Assert.IsTrue(emptyOptionPerson1.Equals(emptyOptionPerson2));
Assert.IsTrue(emptyOptionPerson2.Equals(emptyOptionPerson1));
Assert.IsTrue(emptyOptionPerson1 == emptyOptionPerson2);
Assert.IsTrue(emptyOptionPerson2 == emptyOptionPerson1);
Assert.IsFalse(emptyOptionPerson1 != emptyOptionPerson2);
Assert.IsFalse(emptyOptionPerson2 != emptyOptionPerson1);
var person2 = new PersonNotEquatable("Test");
var optionPerson5 = Option <PersonNotEquatable> .Some(person2);
var optionPerson6 = Option <PersonNotEquatable> .Some(person2);
var optionPerson7 = Option <PersonNotEquatable> .Some(new PersonNotEquatable("Test"));
var emptyOptionPerson3 = Option <PersonNotEquatable> .None;
var emptyOptionPerson4 = Option <PersonNotEquatable> .None;
Assert.IsTrue(optionPerson5.Equals(optionPerson6));
Assert.IsTrue(optionPerson6.Equals(optionPerson5));
Assert.IsTrue(optionPerson5 == optionPerson6);
Assert.IsTrue(optionPerson6 == optionPerson5);
Assert.IsFalse(optionPerson5 != optionPerson6);
Assert.IsFalse(optionPerson6 != optionPerson5);
Assert.IsFalse(optionPerson5.Equals(optionPerson7));
Assert.IsFalse(optionPerson7.Equals(optionPerson5));
Assert.IsFalse(optionPerson5 == optionPerson7);
Assert.IsFalse(optionPerson7 == optionPerson5);
Assert.IsTrue(optionPerson5 != optionPerson7);
Assert.IsTrue(optionPerson7 != optionPerson5);
Assert.IsFalse(optionPerson5.Equals(emptyOptionPerson3));
Assert.IsFalse(emptyOptionPerson3.Equals(optionPerson5));
Assert.IsFalse(optionPerson5 == emptyOptionPerson3);
Assert.IsFalse(emptyOptionPerson3 == optionPerson5);
Assert.IsTrue(optionPerson5 != emptyOptionPerson3);
Assert.IsTrue(emptyOptionPerson3 != optionPerson5);
Assert.IsTrue(emptyOptionPerson3.Equals(emptyOptionPerson4));
Assert.IsTrue(emptyOptionPerson4.Equals(emptyOptionPerson3));
Assert.IsTrue(emptyOptionPerson3 == emptyOptionPerson4);
Assert.IsTrue(emptyOptionPerson4 == emptyOptionPerson3);
Assert.IsFalse(emptyOptionPerson3 != emptyOptionPerson4);
Assert.IsFalse(emptyOptionPerson4 != emptyOptionPerson3);
// Mixed
// ReSharper disable SuspiciousTypeConversion.Global
Assert.IsFalse(optionInt1.Equals(optionPerson1));
Assert.IsFalse(optionPerson1.Equals(optionInt1));
Assert.IsFalse(optionPerson1.Equals(12));
// ReSharper restore SuspiciousTypeConversion.Global
// With flatten
var embedOptionInt = Option <Option <int> > .Some(Option <int> .Some(12));
Assert.IsTrue(optionInt1.Equals(embedOptionInt));
var embedOptionInt2 = Option <Option <int> > .Some(Option <int> .Some(42));
Assert.IsFalse(optionInt1.Equals(embedOptionInt2));
var embedOptionClass = Option <Option <Person> > .Some(Option <Person> .Some(person1));
Assert.IsTrue(optionPerson1.Equals(embedOptionClass));
var embedOptionClass2 = Option <Option <Person> > .Some(Option <Person> .Some(new Person("Test3")));
Assert.IsFalse(optionPerson1.Equals(embedOptionClass2));
// Equals with an object value
Assert.IsFalse(optionInt1.Equals((object)null));
Assert.IsTrue(optionInt1.Equals((object)optionInt1));
Assert.IsFalse(optionInt1.Equals((object)emptyOptionInt1));
}