public void Test_Expenses_Models_Tag_Rename_RemovesExistingTag_NoDuplicates(string existingName, string newName)
{
existingName = existingName.ToLower();
newName = newName.ToLower();
int beforeTagCount;
int beforeItemTagCount;
var existingTag = TagModel.GetOrCreate(existingName);
using (var db = new Context())
{
beforeTagCount = db.Tags.Count();
beforeItemTagCount = db.ItemTags.Count();
}
var newTag = existingTag.Rename(newName);
var newTagId = newTag.Id;
using (var db = new Context())
{
var afterTagCount = db.Tags.Count();
var afterItemTagCount = db.ItemTags.Count();
Assert.IsNull(TagModel.Get(existingName));
Assert.IsNotNull(TagModel.Get(newName));
Assert.That(beforeTagCount - afterTagCount, Is.EqualTo(1), "A tag should have been removed");
Assert.That(afterItemTagCount, Is.LessThanOrEqualTo(beforeItemTagCount), $"New ItemTags should not have been created if the existing item had previously been tagged with {newName}");
}
}
public void Test_Expenses_Models_Tag_Rename_RenamesExistingTag(string existingName, string newName)
{
existingName = existingName.ToLower();
newName = newName.ToLower();
int beforeTagCount;
int beforeItemTagCount;
Guid beforeTagId;
using (var db = new Context())
{
beforeTagCount = db.Tags.Count();
beforeItemTagCount = db.ItemTags.Count();
}
if (TagModel.Get(newName) != null)
{
Assert.Fail($"A tag with the new name {newName} already exists!");
}
var tag = TagModel.GetOrCreate(existingName);
beforeTagId = tag.Id;
tag.Rename(newName);
using (var db = new Context())
{
var afterTagCount = db.Tags.Count();
var afterItemTagCount = db.ItemTags.Count();
Assert.That(afterTagCount, Is.EqualTo(beforeTagCount), "A new tag has been created, while the old one has been deleted");
Assert.That(afterItemTagCount, Is.EqualTo(beforeItemTagCount), "The same amount of relationships between items and tags should exist");
Assert.That(db.Tags.First(t => t.Name == newName).Id, Is.Not.EqualTo(beforeTagId), "The tag is a new entity and thus should have a different Id");
}
}
