public void TestGetAverageNumberOfBooksBoughtEachMonth()
{
var bookManagerMock = new Mock <IBookManager>();
bookManagerMock.Setup(m =>
m.GetListOfAllBooks())
.Returns(new List <Book>
{
new Book {
DateOfPurchase = new DateTime(2019, 10, 9)
},
new Book {
DateOfPurchase = new DateTime(2019, 10, 9)
},
new Book {
DateOfPurchase = new DateTime(2019, 9, 9)
},
new Book {
DateOfPurchase = new DateTime(2019, 9, 9)
}
});
var libraryAPI = new LibraryStatisticsAPI(bookManagerMock.Object, null, null, null);
var result = libraryAPI.GetAverageNumberOfBooksBoughtEachMonth();
Assert.AreEqual(2, result);
}
public void TestBookAverageAge()
{
var bookManagerMock = new Mock <IBookManager>();
bookManagerMock.Setup(m =>
m.GetListOfAllBooks())
.Returns(new List <Book>
{
new Book {
DateOfPurchase = new DateTime(2009, 11, 07)
},
new Book {
DateOfPurchase = new DateTime(1999, 11, 07)
},
new Book {
DateOfPurchase = new DateTime(1999, 11, 07)
},
new Book {
DateOfPurchase = new DateTime(2009, 11, 07)
}
});
var libraryAPI = new LibraryStatisticsAPI(bookManagerMock.Object, null, null, null);
var result = libraryAPI.GetAverageBookAge();
Assert.AreEqual(15, result);
}
public void TestGetAverageBookConditionDecreasedEachMonthLastSixMonths()
{
var borrowManagerMock = new Mock <IBorrowManager>();
borrowManagerMock.Setup(m =>
m.GetAllBorrows())
.Returns(new List <Borrow>
{
new Borrow {
DateOfBorrow = new DateTime(2019, 10, 10), BookConditionDecreased = 2
},
{ new Borrow {
DateOfBorrow = new DateTime(2019, 10, 10), BookConditionDecreased = 2
} },
{ new Borrow {
DateOfBorrow = new DateTime(2019, 10, 10), BookConditionDecreased = 2
} }
}
);
var libraryAPI = new LibraryStatisticsAPI(null, null, borrowManagerMock.Object, null);
var result = libraryAPI.GetAverageBookConditionDecreasedEachMonthLastSixMonths();
Assert.AreEqual(1, result);
}
public void TestGetTotalValueOfBooks()
{
var bookManagerMock = new Mock <IBookManager>();
bookManagerMock.Setup(m =>
m.GetListOfAllBooks())
.Returns(new List <Book>
{
new Book {
Cost = 100, Condition = 5
},
new Book {
Cost = 500, Condition = 2
},
});
var libraryAPI = new LibraryStatisticsAPI(bookManagerMock.Object, null, null, null);
var result = libraryAPI.GetTotalValueOfBooks();
Assert.AreEqual(300, result);
}
public void TestGetTotalOutstandingCustomerDebt()
{
var billManagerMock = new Mock <IBillManager>();
billManagerMock.Setup(m =>
m.GetListOfAllBills())
.Returns(new List <Bill>
{
new Bill {
Amount = 100
},
{ new Bill {
Amount = 50
} }
});
var libraryAPI = new LibraryStatisticsAPI(null, null, null, billManagerMock.Object);
var result = libraryAPI.GetTotalOutstandingCustomerDebt();
Assert.AreEqual(150, result);
}
public void TestGetAverageExpenditureOnBooksEachMonth()
{
var bookManagerMock = new Mock <IBookManager>();
bookManagerMock.Setup(m =>
m.GetListOfAllBooks())
.Returns(new List <Book>
{
new Book {
DateOfPurchase = new DateTime(2019, 10, 9), Cost = 100
},
new Book {
DateOfPurchase = new DateTime(2019, 9, 9), Cost = 300
},
});
var libraryAPI = new LibraryStatisticsAPI(bookManagerMock.Object, null, null, null);
var result = libraryAPI.GetAverageExpenditureOnBooksEachMonth();
Assert.AreEqual(200, result);
}
public void TestCustomerAverageAge()
{
var customerManagerMock = new Mock <ICustomerManager>();
customerManagerMock.Setup(m =>
m.GetAllCustomers())
.Returns(new List <Customer>
{
new Customer {
DateOfBirth = new DateTime(2014, 10, 31)
},
new Customer {
DateOfBirth = new DateTime(2003, 10, 31)
}
});
var libraryAPI = new LibraryStatisticsAPI(null, customerManagerMock.Object, null, null);
var result = libraryAPI.GetAverageCustomerAge();
Assert.AreEqual(10.5, result);
}