public async Task GetRatesCountByBookIdShouldReturnZeroWhenInvalidBookId()
{
var options = new DbContextOptionsBuilder <AlexandriaDbContext>()
.UseInMemoryDatabase(Guid.NewGuid().ToString())
.Options;
var db = new AlexandriaDbContext(options);
var rates = new List <StarRating>();
for (int i = 1; i <= 10; i++)
{
rates.Add(new StarRating
{
Rate = i,
UserId = i.ToString(),
BookId = 1,
});
}
await db.AddRangeAsync(rates);
await db.SaveChangesAsync();
var ratingsService = new StarRatingsService(db);
var result = await ratingsService.GetRatesCountByBookIdAsync(3);
Assert.Equal(0, result);
}
public async Task GetRatesCountByBookIdShouldReturnZeroWhenRatesIsEmpty()
{
var options = new DbContextOptionsBuilder <AlexandriaDbContext>()
.UseInMemoryDatabase(Guid.NewGuid().ToString())
.Options;
var db = new AlexandriaDbContext(options);
var ratingsService = new StarRatingsService(db);
var result = await ratingsService.GetRatesCountByBookIdAsync(1);
Assert.Equal(0, result);
}