public void PostBottleSize_BottleSizeCountIncremented_WhenUsingValidBottleSize() { // Arrange var BottleSize = new BottleSize { Size = "Test 3.1 BottleSize", VolumeMeasure = "Test 3.1 Volume Measure", Default = false }; var oldCount = _dbContext.BottleSizes.Count( ); // Act var result = _controller.PostBottleSize(BottleSize); //Assert Assert.Equal(oldCount + 1, _dbContext.BottleSizes.Count( )); }