public void BackSummary_WhenGivenAnEmptyList_ReturnsAnEmptyString()
{
var flashcards = new List <Flashcard>();
var lesson = new Lesson();
string result = lesson.BackSummary(flashcards);
Assert.That(result, Is.EqualTo(string.Empty));
}
public void FrontSummary_WhenGivenAListWithTwoFlashcardsTheFirstWhoseFrontSideIsRedAndWhoseSecondCardHasAFrontSideWithBlue_ShouldReturnRedFollowedByANewLineFollowedByBlue()
{
var flashcards = new List <Flashcard>();
flashcards.Add(new Flashcard("a", "red"));
flashcards.Add(new Flashcard("b", "blue"));
var lesson = new Lesson();
string result = lesson.BackSummary(flashcards);
Assert.That(result, Is.EqualTo("red\nblue\n"));
}
private static void StartCommandLineLoop(IList <Flashcard> flashcards,
bool fromDatabase)
{
while (true)
{
WriteLine("Enter 'a' to show both front and back of each card.");
WriteLine("Enter 'f' to show the front of each card.");
WriteLine("Enter 'b' to show the back of each card.");
WriteLine("Enter 'add' to add a flashcard.");
WriteLine("Enter 'delete' to delete a flashcard.");
WriteLine("Enter 'save' to save all flashcards");
WriteLine("Enter 'x' to exit the application.");
PrintPrompt();
string userInput = ReadLine();
Lesson lesson = new Lesson();
switch (userInput)
{
case "a":
WriteLine("Printing Lesson summary:");
WriteLine(lesson.LessonSummary(flashcards));
break;
case "f":
WriteLine("Print only fronts of each card:");
WriteLine(lesson.FrontSummary(flashcards));
break;
case "b":
WriteLine("Print only backs of each card:");
WriteLine(lesson.BackSummary(flashcards));
break;
case "add":
WriteLine("Adding a flashcard...");
WriteLine("Enter the front side:");
PrintPrompt();
string fSide = ReadLine();
WriteLine("You entered the following for the front side: (" +
fSide + ")");
WriteLine("Enter the back side:");
PrintPrompt();
string bSide = ReadLine();
WriteLine("You entered the following for the back side: (" +
bSide + ")");
var addition = new Flashcard(fSide, bSide);
flashcards.Add(addition);
if (fromDatabase)
{
new DatabaseBridge().AddFlashcard(addition);
// We reload the flashcards from the database
// so that we have the ID that the
// flashcard we just added has. It is the
// database that sets the ID.
flashcards = LoadFromDatabase();
// If we didn't do this, the IDs would
// not be unique within this application.
// but they would be unique in the database.
}
else
{
// Set the ID to a unique ID.
int maxID = 0;
foreach (var f in flashcards)
{
if (f.ID > maxID)
{
maxID = f.ID;
}
}
addition.ID = maxID + 1;
}
WriteLine("Done adding flashcard.");
break;
case "save":
if (fromDatabase)
{
WriteLine("Already saved.");
}
else
{
// Let the user choose the file name.
WriteLine("Enter a name for a file to save to:");
PrintPrompt();
string fileName = ReadLine();
WriteLine("Saving flashcards to file called '" + fileName + "'");
File.WriteAllText(fileName, lesson.TabSeparatedValues(flashcards));
WriteLine("Done writing to file named " + fileName);
}
break;
case "delete":
foreach (Flashcard f in flashcards)
{
WriteLine($"ID: {f.ID}\t\t{f.ShowFront()}\t{f.ShowBack()}");
}
WriteLine("Enter the ID of the card you want to delete, or enter 'c' to cancel");
PrintPrompt();
string userDeleteResponse = ReadLine();
if (userDeleteResponse == "c")
{
WriteLine("Deletion cancelled. " +
"Nothing has been deleted.\n");
}
else
{
foreach (Flashcard f in flashcards)
{
if (f.ID.ToString() == userDeleteResponse)
{
if (fromDatabase)
{
new DatabaseBridge().DeleteFlashcard(f);
}
flashcards.Remove(f);
WriteLine($"Flashcard with ID: {userDeleteResponse} succesfully deleted.");
break;
}
}
if (fromDatabase)
{
// Reload flashcards from database.
flashcards = LoadFromDatabase();
}
}
break;
case "x":
WriteLine("Exiting...");
System.Environment.Exit(0);
break;
default:
WriteLine("Unrecognized input: (" + userInput + ")");
break;
}
}
}