public void CompareUsingEqualsOperatorsAndNullOperandsTest()
{
//Arrange
SampleEntity entityLeft = null;
SampleEntity entityRight = new SampleEntity();
entityRight.GenerateNewIdentity();
//Act
if (!(entityLeft == null))//this perform ==(left,right)
Assert.Fail();
if (!(entityRight != null))//this perform !=(left,right)
Assert.Fail();
entityRight = null;
//Act
if (!(entityLeft == entityRight))//this perform ==(left,right)
Assert.Fail();
if (entityLeft != entityRight)//this perform !=(left,right)
Assert.Fail();
}
public void CompareTheSameReferenceReturnTrueTest()
{
//Arrange
var entityLeft = new SampleEntity();
SampleEntity entityRight = entityLeft;
//Act
if (! entityLeft.Equals(entityRight))
Assert.Fail();
if (!(entityLeft == entityRight))
Assert.Fail();
}
public void ChangeIdentitySetNewIdentity()
{
//Arrange
var entity = new SampleEntity();
entity.GenerateNewIdentity();
//act
Guid expected = entity.Id;
entity.ChangeCurrentIdentity(Guid.NewGuid());
//assert
Assert.AreNotEqual(expected, entity.Id);
}
public void CompareWhenLeftIsNullAndRightIsNullReturnFalseTest()
{
//Arrange
SampleEntity entityLeft = null;
var entityRight = new SampleEntity();
entityRight.GenerateNewIdentity();
//Act
if (!(entityLeft == null))//this perform ==(left,right)
Assert.Fail();
if (!(entityRight != null))//this perform !=(left,right)
Assert.Fail();
}
public void DiferentIdProduceEqualsFalseTest()
{
//Arrange
var entityLeft = new SampleEntity();
var entityRight = new SampleEntity();
entityLeft.GenerateNewIdentity();
entityRight.GenerateNewIdentity();
//Act
bool resultOnEquals = entityLeft.Equals(entityRight);
bool resultOnOperator = entityLeft == entityRight;
//Assert
Assert.IsFalse(resultOnEquals);
Assert.IsFalse(resultOnOperator);
}
public void SetIdentitySetANonTransientEntity()
{
//Arrange
var entity = new SampleEntity();
//Act
entity.GenerateNewIdentity();
//Assert
Assert.IsFalse(entity.IsTransient());
}
public void SameIdentityProduceEqualsTrueTest()
{
//Arrange
Guid id = Guid.NewGuid();
var entityLeft = new SampleEntity();
var entityRight = new SampleEntity();
entityLeft.ChangeCurrentIdentity(id);
entityRight.ChangeCurrentIdentity(id);
//Act
bool resultOnEquals = entityLeft.Equals(entityRight);
bool resultOnOperator = entityLeft == entityRight;
//Assert
Assert.IsTrue(resultOnEquals);
Assert.IsTrue(resultOnOperator);
}
public void CreateAndSpecificationTest()
{
//Arrange
DirectSpecification<SampleEntity> leftAdHocSpecification;
DirectSpecification<SampleEntity> rightAdHocSpecification;
var identifier = Guid.NewGuid();
Expression<Func<SampleEntity, bool>> leftSpec = s => s.Id == identifier;
Expression<Func<SampleEntity, bool>> rightSpec = s => s.SampleProperty.Length > 2;
leftAdHocSpecification = new DirectSpecification<SampleEntity>(leftSpec);
rightAdHocSpecification = new DirectSpecification<SampleEntity>(rightSpec);
//Act
AndSpecification<SampleEntity> composite = new AndSpecification<SampleEntity>(leftAdHocSpecification, rightAdHocSpecification);
//Assert
Assert.IsNotNull(composite.SatisfiedBy());
Assert.ReferenceEquals(leftAdHocSpecification, composite.LeftSideSpecification);
Assert.ReferenceEquals(rightAdHocSpecification, composite.RightSideSpecification);
var list = new List<SampleEntity>();
var sampleA = new SampleEntity() { SampleProperty = "1" };
sampleA.ChangeCurrentIdentity(identifier);
var sampleB = new SampleEntity() { SampleProperty = "the sample property" };
sampleB.ChangeCurrentIdentity(identifier);
list.AddRange(new SampleEntity[] { sampleA, sampleB });
var result = list.AsQueryable().Where(composite.SatisfiedBy()).ToList();
Assert.IsTrue(result.Count == 1);
}
public void UseSpecificationOrOperatorTest()
{
//Arrange
DirectSpecification<SampleEntity> leftAdHocSpecification;
DirectSpecification<SampleEntity> rightAdHocSpecification;
var identifier = Guid.NewGuid();
Expression<Func<SampleEntity, bool>> leftSpec = s => s.Id == identifier;
Expression<Func<SampleEntity, bool>> rightSpec = s => s.SampleProperty.Length > 2;
//Act
leftAdHocSpecification = new DirectSpecification<SampleEntity>(leftSpec);
rightAdHocSpecification = new DirectSpecification<SampleEntity>(rightSpec);
var orSpec = leftAdHocSpecification || rightAdHocSpecification;
//Assert
var list = new List<SampleEntity>();
var sampleA = new SampleEntity() { SampleProperty = "1" };
sampleA.ChangeCurrentIdentity(identifier);
var sampleB = new SampleEntity() { SampleProperty = "the sample property" };
sampleB.GenerateNewIdentity();
list.AddRange(new SampleEntity[] { sampleA, sampleB });
var result = list.AsQueryable().Where(orSpec.SatisfiedBy()).ToList();
Assert.IsTrue(result.Count() == 2);
}