public async Task DropCollection()
        {
            using (var file = new TempFile())
                using (var db = new LiteDatabaseAsync(file.Filename))
                {
                    (await db.GetCollectionNamesAsync()).Should().NotContain("col");

                    var col = db.GetCollection("col");

                    await col.InsertAsync(new BsonDocument { ["a"] = 1 });

                    (await db.GetCollectionNamesAsync()).Should().Contain("col");

                    await db.DropCollectionAsync("col");

                    (await db.GetCollectionNamesAsync()).Should().NotContain("col");
                }
        }