public void SafeGet_UsingNestedEntityPropertyWithNull_Succeeds()
{
// Arrange.
TestEntity subject = new TestEntity();
// Act.
var result = EntityExtensions.NullSafeGet(subject, n => n.Property1.Property3.Length);
// Assert.
Assert.AreEqual(default(int), result);
}
public void SafeGet_PassingNullAsExpression_ThrowsException()
{
// Arrange.
TestEntity subject = new TestEntity()
{
Property1 = new TestEntityPropertyType()
};
// Act.
var result = NullSafeExpressionHandler.SafeGet<Entity, object>(subject, null);
// Assert.
}
public void SafeGet_UsingDirectValueTypeProperty_ReturnsPropertyValue()
{
// Arrange.
TestEntity subject = new TestEntity()
{
Property2 = 123
};
// Act.
var result = NullSafeExpressionHandler.SafeGet(subject, n => n.Property2);
// Assert.
Assert.IsNotNull(result);
Assert.AreEqual(subject.Property2, result);
}
public void SafeGet_UsingNestedNonNullEntityProperty_Succeeds()
{
// Arrange.
TestEntity subject = new TestEntity()
{
Property1 = new TestEntityPropertyType()
{
Property3 = "abc"
}
};
// Act.
var result = EntityExtensions.NullSafeGet(subject, n => n.Property1.Property3.Length);
// Assert.
Assert.AreEqual(subject.Property1.Property3.Length, result);
}
public void SafeGet_UsingNestedProperty_ReturnsPropertyResult()
{
// Arrange.
string stringValue = "Hello";
TestEntity subject = new TestEntity()
{
Property1 = new TestEntityPropertyType()
{
Property3 = stringValue
}
};
// Act.
object result = NullSafeExpressionHandler.SafeGet(subject, n => n.Property1.Property3.Length);
// Assert.
Assert.IsNotNull(result);
Assert.IsTrue(result is int);
Assert.AreEqual(stringValue.Length, (int)result);
}
public void SafeMapFrom_MapUsingSafeMapFrom_Succeeds()
{
// Arrange.
TestEntity subject = new TestEntity()
{
Property1 = new TestEntityPropertyType()
{
Property3 = "abc"
}
};
TestEntity subject2 = new TestEntity();
Mapper.Reset();
// Act.
Mapper.Initialize(n => n.AddProfile<TestAutoMapperProfile>());
Mapper.AssertConfigurationIsValid();
var result = Mapper.Map<TestEntity, TestEntity>(subject, subject2);
// Assert.
Assert.AreEqual(subject.Property1.Property3.Length, subject2.Property2);
}
public void SafeGet_UsingNestedReferenceTypePropertyWithNullInChain_ReturnsNull()
{
// Arrange.
TestEntity subject = new TestEntity();
// Act.
object result = NullSafeExpressionHandler.SafeGet(subject, n => n.Property1.Property3);
// Assert.
Assert.AreEqual(result, null);
}
public void SafeGet_UsingTwoDifferentObjectsAccessingEquallyNamedProperty_ReturnsCorrectPropertyValue()
{
// Arrange.
TestEntity subject1 = new TestEntity()
{
Property1 = new TestEntityPropertyType()
};
TestEntity2 subject2 = new TestEntity2()
{
Property1 = new TestEntityPropertyType()
};
// Act.
var result = NullSafeExpressionHandler.SafeGet(subject1, n => n.Property1);
result = NullSafeExpressionHandler.SafeGet(subject2, n => n.Property1);
// Assert.
Assert.IsNotNull(result);
Assert.AreEqual(subject2.Property1, result);
}
public void SafeGet_UsingNestedValueTypePropertyWithNullInChain_ReturnsDefault()
{
// Arrange.
TestEntity subject = new TestEntity();
// Act.
object result = NullSafeExpressionHandler.SafeGet(subject, n => n.Property1.Property3.Length);
// Assert.
Assert.IsNotNull(result);
Assert.AreEqual(result.GetType(), typeof(int));
Assert.AreEqual(result, default(int));
}
