public async Task DeleteSampleAsync_ShouldReturnSample2BDeleted() { //arrange int id = 2; ProjectDBContext projectDBContext = new ProjectDBContext(options); ProjectRepoDB projectRepoDB = new ProjectRepoDB(projectDBContext); var sample2BDeleted = projectDBContext.Sample.Where(i => i.Id == id).FirstOrDefault(); //act var result = await projectRepoDB.DeleteSampleAsync(sample2BDeleted); //assert Assert.Equal(2, result.Id); }