public async Task GetAsync_WillReturnNull_WhenNotExists(string id)
        {
            // Arrange
            sut = new BrilligRepository(_db);

            // Act
            Brillig result = await sut.GetAsync(id);

            // Assert
            Assert.Null(result);
        }
        public async Task GetAsyncMultiple_WillReturnAllMatchingEntities(string id1, string id2, string id3)
        {
            // Arrange
            sut = new BrilligRepository(_db);

            // Act
            IEnumerable <Brillig> result = await sut.GetAsync(id1, id2, id3);

            // Assert
            Assert.NotEmpty(result);
            Assert.Equal(3, result.Count());
        }
        public async Task GetAsync_WillReturnTheCorrectValue_WhenExists(string id)
        {
            // Arrange
            sut = new BrilligRepository(_db);

            // Act
            Brillig result = await sut.GetAsync(id);

            // Assert
            Assert.NotNull(result);
            Assert.Equal(id, result.Id);
        }