public void TestSaveAndDeleteCard()
{
DataModel model = new DataModel(path);
model.DeleteAll(); //Completely clears the data!!!! DO NOT USE IN ACTUAL CODE - TESTING METHOD
//Setup
RevisionCardSQL[] testCards = new RevisionCardSQL[5];
string[] topicNames = { "Pancakes", "Chemistry", "Nuclear Physics" };
//Save to file
for (int i = 0; i < topicNames.Length; i++)
{
model.SaveTopic(new TopicSQL()
{
TopicName = topicNames[i]
});
for (int j = 0; j < testCards.Length; j++)
{
testCards[j] = new RevisionCardSQL()
{
Topic = topicNames[i], Answer = "A" + j.ToString(), Question = "Q" + j.ToString()
};
model.SaveCard(testCards[j]);
}
}
//Read from file
model.LoadData();
//Test
for (int i = 0; i < topicNames.Length; i++)
{
for (int j = 0; j < testCards.Length; j++)
{
var topic = model.GetTopicByName(topicNames[i]);
RevisionCardSQL fetchedCard = model.RevisionGroups[topic][j];
Assert.AreEqual("Q" + j.ToString(), fetchedCard.Question);
Assert.AreEqual("A" + j.ToString(), fetchedCard.Answer);
}
}
//Setup for testing of deleting cards
for (int i = 0; i < model.RevisionGroups.Count; i++)
{
var topic = model.GetTopicByName(topicNames[i]);
int count = model.RevisionGroups[topic].Count;
while (model.RevisionGroups[topic].Count > 0)
{
model.SaveDeleteCard(model.RevisionGroups[topic][0]);
}
Assert.AreEqual(0, model.RevisionGroups[topic].Count);
}
}
public ManageModifyCardViewModel(IPageHelper p, RevisionCardSQL revisionCard) : base(p)
{
TopicIndex = 0;
int originalTopicIndex = TopicNames.IndexOf(revisionCard.Topic);
TopicIndex = originalTopicIndex;
Question = revisionCard.Question;
Answer = revisionCard.Answer;
SaveChangesCommand = new Command(execute: async() =>
{
try
{
string topic;
if (TopicIndex != 0)
{
topic = TopicNames[TopicIndex]; //Change to existing topic
}
else
{
topic = TopicName; //Change to new topic
}
model.ModifyCard(revisionCard, topic, question, answer);
//Ensures that last selected topic remains selected
TopicIndex = TopicNames.IndexOf(topic);
await p.MessagePopup("Saved changes", "Changes to revision card have been saved.");
}
catch (Exception ex)
{
await p.MessagePopup("Error occurred", "Error: " + ex.Message);
}
});
}
public ManageModifyCardPage(RevisionCardSQL revisionCard)
{
InitializeComponent();
BindingContext = new ManageModifyCardViewModel(this, revisionCard);
}