public void VM_IncreaseDecreaseBookCountTest()
{
Assert.IsFalse(DataSalvator.switchedOn);
MyemViewModel vm = new MyemViewModel();
vm.FetchDataCommand.Execute(null);
vm.AddEntryCommand.Execute(null);
int currentCount = vm.HighlightedEntry.BookCount;
vm.IncreaseBookCountCommand.Execute(null);
Assert.AreEqual(currentCount + 1, vm.HighlightedEntry.BookCount);
vm.DecreaseBookCountCommand.Execute(null);
Assert.AreEqual(currentCount, vm.HighlightedEntry.BookCount);
}
public void VM_CannotDecreaseBookCountBeyondZeroTest()
{
Assert.IsFalse(DataSalvator.switchedOn);
MyemViewModel vm = new MyemViewModel();
vm.FetchDataCommand.Execute(null);
vm.AddEntryCommand.Execute(null);
vm.IncreaseBookCountCommand.Execute(null);
while (vm.HighlightedEntry.BookCount > 0)
{
Assert.IsTrue(vm.DecreaseBookCountCommand.CanExecute(null));
vm.DecreaseBookCountCommand.Execute(null);
}
Assert.IsFalse(vm.DecreaseBookCountCommand.CanExecute(null));
}
public void VM_AddDeleteEntryTest()
{
Assert.IsFalse(DataSalvator.switchedOn);
MyemViewModel vm = new MyemViewModel();
vm.FetchDataCommand.Execute(null);
int currentCount = vm.Entries.Count;
vm.AddEntryCommand.Execute(null);
Assert.AreEqual(currentCount + 1, vm.Entries.Count);
Assert.AreEqual("", vm.HighlightedEntry.Title);
Assert.AreEqual("", vm.HighlightedEntry.Author);
Assert.AreEqual(0, vm.HighlightedEntry.BookCount);
vm.DeleteEntryCommand.Execute(null);
Assert.AreEqual(currentCount, vm.Entries.Count);
}
public void VM_FetchTest()
{
Assert.IsFalse(DataSalvator.switchedOn);
MyemViewModel vm = new MyemViewModel();
vm.FetchDataCommand.Execute(null);
Assert.IsNotNull(vm.Entries);
Assert.IsTrue(vm.Entries.Count > 0);
Assert.AreEqual(vm.Entries[0], vm.HighlightedEntry);
Assert.IsTrue(vm.IncreaseBookCountCommand.CanExecute(null));
Assert.IsTrue(vm.DeleteEntryCommand.CanExecute(null));
Assert.IsTrue(vm.AddEntryCommand.CanExecute(null));
Assert.AreEqual(vm.HighlightedEntry.BookCount > 0, vm.DecreaseBookCountCommand.CanExecute(null));
foreach (Entry entry in vm.Entries)
{
Assert.IsNotNull(entry.Author);
Assert.IsNotNull(entry.Title);
Assert.IsNotNull(entry.BookCount);
}
}
public void VM_ConstructorTest()
{
Assert.IsFalse(DataSalvator.switchedOn);
MyemViewModel vm = new MyemViewModel();
Assert.IsNotNull(vm.AddEntryCommand);
Assert.IsNotNull(vm.DeleteEntryCommand);
Assert.IsNotNull(vm.IncreaseBookCountCommand);
Assert.IsNotNull(vm.DecreaseBookCountCommand);
Assert.IsNotNull(vm.FetchDataCommand);
Assert.IsNotNull(vm.SaveDataCommand);
Assert.AreEqual("Working!", vm.FeedbackMessage);
Assert.IsNull(vm.Entries);
Assert.IsNull(vm.HighlightedEntry);
Assert.IsTrue(vm.FetchDataCommand.CanExecute(null));
Assert.IsFalse(vm.AddEntryCommand.CanExecute(null));
Assert.IsFalse(vm.DeleteEntryCommand.CanExecute(null));
Assert.IsFalse(vm.IncreaseBookCountCommand.CanExecute(null));
Assert.IsFalse(vm.DecreaseBookCountCommand.CanExecute(null));
Console.WriteLine(tstry);
}
