public void EqualsIsReflexive()
{
//Given
ValueObject x = new ValueObjectA(1234);
//When
//Then
Assert.True(x.Equals(x));
}
public void EqualsIsSymmetric()
{
//Given
int someInteger = 1234;
ValueObject x = new ValueObjectA(someInteger);
ValueObject y = new ValueObjectA(someInteger);
//When
//Then
Assert.Equal(x.Equals(y), y.Equals(x));
}
public void SameTypeAndDifferentValuesIsNotEqual()
{
//Given
ValueObject x = new ValueObjectA(1234);
ValueObject y = new ValueObjectA(5678);
//When
//Then
Assert.NotEqual(x, y);
Assert.False(x == y);
Assert.True(x != y);
}
public void NullIsNotEqualToNonNull()
{
//Given
ValueObject x = null;
ValueObject y = new ValueObjectA(1234);
//When
//Then
Assert.NotEqual(x, y);
Assert.False(x == y);
Assert.True(x != y);
}
public void DifferentTypeIsNotEqual()
{
//Given
int someInteger = 1234;
ValueObject x = new ValueObjectA(someInteger);
ValueObject y = new ValueObjectB(someInteger);
//When
//Then
Assert.NotEqual(x, y);
Assert.False(x == y);
Assert.True(x != y);
}
public void SameTypeAndSameValuesIsEqual()
{
//Given
int someInteger = 1234;
ValueObject x = new ValueObjectA(someInteger);
ValueObject y = new ValueObjectA(someInteger);
//When
//Then
Assert.Equal(x, y);
Assert.True(x == y);
Assert.False(x != y);
}
public void EqualsIsTransitive()
{
//Given
int someInteger = 1234;
ValueObject x = new ValueObjectA(someInteger);
ValueObject y = new ValueObjectA(someInteger);
ValueObject z = new ValueObjectA(someInteger);
//When
//Then
if (x.Equals(y) && y.Equals(z))
{
Assert.Equal(x, z);
}
}
public void SuccessiveInvocationsReturnSameValue()
{
//Given
int someInteger = 1234;
ValueObject entity1 = new ValueObjectA(someInteger);
ValueObject entity2 = new ValueObjectA(someInteger);
bool[] results = new bool[10];
//When
for (int i = 0; i < results.Length; i++)
{
results[i] = entity1.Equals(entity2);
}
//Then
Assert.All(results, b => { if (b != results[0])
{
throw new Exception();
}
});
}