public void WhenDataGiven_ShouldReturnHashCodeOfProperty()
{
//Arrange
var comparer = new KeyComparer<TestPoco, int>(f => f.Id) as IEqualityComparer<TestPoco>;
var data = new TestPoco() { Id = 1 };
//Act
var result = comparer.GetHashCode(data);
//Assert
Assert.AreEqual(data.Id.GetHashCode(), result);
}
public void WhenPropertiesComparedAreNotEqual_ShouldReturnFalse()
{
//Arrange
var comparer = new KeyComparer<TestPoco, int>(f => f.Id) as IEqualityComparer<TestPoco>;
var one = new TestPoco() { Id = 1 };
var two = new TestPoco() { Id = 2 };
//Act
var result = comparer.Equals(one, two);
//Assert
Assert.IsFalse(result);
}
public void WhenDiffrentValuesAreProvidedWithKeySelector_ShouldReturnFullyJoinedList()
{
//Arrange
var right = new TestPoco[] {
new TestPoco { Id = 1 },
new TestPoco { Id = 2 } };
var left = new TestPoco[] {
new TestPoco { Id = 1 },
new TestPoco { Id = 3 }
};
//Act
var result = right.FullOuterJoin(left, (t) => t.Id, (r, l) => new { One = r, Two = l });
//Assert
Assert.AreEqual(3, result.Count());
Assert.AreEqual(1, result.ElementAt(0).One.Id);
Assert.AreEqual(1, result.ElementAt(0).Two.Id);
Assert.AreEqual(2, result.ElementAt(1).One.Id);
Assert.AreEqual(null, result.ElementAt(1).Two);
Assert.AreEqual(null, result.ElementAt(2).One);
Assert.AreEqual(3, result.ElementAt(2).Two.Id);
}