public void Apply_WhenNullCustomers_ShouldReturnEmptyList()
{
//---------------Arrange-------------------
var strategy = new NullDuplicatesStrategy();
//---------------Act----------------
var result = strategy.Apply(null);
//---------------Assert ----------------------
CollectionAssert.IsEmpty(result);
}
public void Apply_WhenDuplicateCustomers_ShouldReturnOriginalInput()
{
//---------------Arrange-------------------
var expected = 12;
var numberOfRecords = 12;
var strategy = new NullDuplicatesStrategy();
var duplicateCount = 2;
var customers = new CustomerTestDataFactory()
.CreateCustomersWithDuplicates(numberOfRecords, duplicateCount);
//---------------Act----------------
var result = strategy.Apply(customers);
//---------------Assert ----------------------
Assert.AreEqual(expected, result.Count);
Assert.AreEqual(result, customers);
}
