public void Equals_Is_Transitive()
{
// ARRANGE
var instance1 = new NonEmptyString("foo");
var instance2 = new NonEmptyString("foo");
var instance3 = new NonEmptyString("foo");
// ACT
var result1 = instance1.Equals(instance2);
var result2 = instance2.Equals(instance3);
var result3 = instance1.Equals(instance3);
// ASSERT
Assert.IsTrue(result1);
Assert.IsTrue(result2);
Assert.IsTrue(result3);
}
public void Equals_Is_Reflexive()
{
// ARRANGE
var instance = new NonEmptyString("foo");
// ACT
var result = instance.Equals(instance);
// ASSERT
Assert.IsTrue(result);
}
public void Equals_Returns_False_When_Obj_Is_Null()
{
// ARRANGE
var instance = new NonEmptyString("foo");
// ACT
var result = instance.Equals(null);
// ASSERT
Assert.IsFalse(result);
}
public void Equals_Compares_Instances_By_Value()
{
// ARRANGE
var instance1 = new NonEmptyString("foo");
var instance2 = new NonEmptyString("foo");
var instance3 = new NonEmptyString("bar");
var instance4 = new NonEmptyString("FOO");
var instance5 = new NonEmptyString("fOo");
// ACT
var result1 = instance1.Equals(instance2);
var result2 = instance1.Equals(instance3);
var result3 = instance1.Equals(instance4);
var result4 = instance1.Equals(instance5);
// ASSERT
Assert.IsTrue(result1);
Assert.IsFalse(result2);
Assert.IsFalse(result3);
Assert.IsFalse(result4);
}
public void Equals_Is_Simmetric()
{
// ARRANGE
var left = new NonEmptyString("foo");
var right = new NonEmptyString("foo");
// ACT
var result1 = left.Equals(right);
var result2 = right.Equals(left);
// ASSERT
Assert.IsTrue(result1);
Assert.IsTrue(result2);
}
public void Equals_Returns_False_When_Obj_Is_Not_Of_Type_NonEmptyString()
{
// ARRANGE
var instance = new NonEmptyString("foo");
// ACT
var result1 = instance.Equals(13);
var result2 = instance.Equals(13M);
var result3 = instance.Equals("foo");
var result4 = instance.Equals(new DateTime(2015, 1, 1));
var result5 = instance.Equals(new TestClass());
var result6 = instance.Equals(new TestStruct());
// ASSERT
Assert.IsFalse(result1);
Assert.IsFalse(result2);
Assert.IsFalse(result3);
Assert.IsFalse(result4);
Assert.IsFalse(result5);
Assert.IsFalse(result6);
}