public async Task AddTagsToBookMethodShouldNotAddBookTagsWhichExist()
{
var options = new DbContextOptionsBuilder <AlexandriaDbContext>()
.UseInMemoryDatabase(Guid.NewGuid().ToString())
.Options;
var db = new AlexandriaDbContext(options);
await db.BookTags.AddRangeAsync(
new BookTag
{
BookId = 1,
TagId = 1,
},
new BookTag
{
BookId = 1,
TagId = 2,
});
await db.SaveChangesAsync();
var bookTagsService = new BookTagsService(db);
var addTags = new List <int> {
1, 2, 3, 4, 5, 5, 5, 5, 5, 5
};
await bookTagsService.AddTagsToBookAsync(1, addTags);
Assert.Equal(5, await db.BookTags.CountAsync());
}
public async Task AddTagsToBookMethodShouldNotAddDuplicateTags()
{
var options = new DbContextOptionsBuilder <AlexandriaDbContext>()
.UseInMemoryDatabase(Guid.NewGuid().ToString())
.Options;
var db = new AlexandriaDbContext(options);
var bookTagsService = new BookTagsService(db);
var tags = new List <int> {
1, 2, 3, 4, 5, 5, 5, 5, 5, 5
};
await bookTagsService.AddTagsToBookAsync(1, tags);
Assert.Equal(5, await db.BookTags.CountAsync());
}