[TestMethod] //A value test
public void GettingTopFiveReviews_WhenFiveExist_ReturnsFiveInDescendingOrder()
{
//Arrange
var mockContext = Mock.Create <FruitFinderContext>().PrepareMock();
var reviews = new List <Review>();
var builder = new FruidFinderDalBuilder().WithContext(mockContext);
var numberToInclude = 5;
for (int i = 0; i < numberToInclude * 2; i++)
{
var review = builder.MakeReview();
review.VoteTally = i;
reviews.Add(review);
}
mockContext.Reviews.Bind(reviews);
var dal = builder.Build();
//Act
var result = dal.GetTopReviews(numberToInclude);
//Assert
result.Count().Should().Be(numberToInclude,
"the list should have " + numberToInclude + " reviews");
result.Should().BeInDescendingOrder(x => x.VoteTally,
"the reviews should be in descending order by VoteTally");
}
[TestMethod] //An interaction test
public void SavingAReview_WhenSuccessful_CallsContextSaveChanges()
{
//Arrange
var mockContext = Mock.Create <FruitFinderContext>();
var builder = new FruidFinderDalBuilder().WithContext(mockContext);
var dal = builder.Build();
Mock.Arrange(() => mockContext.SaveChanges()).OccursOnce();
var review = builder.MakeReview();
//Act
dal.SaveReview(review);
//Assert
Mock.Assert(mockContext);
}
[TestMethod] //A state test
public void SavingAReview_WhenUpdatingIt_UpdatesTheUpdatedWhenAndBy()
{
//Arrange
var builder = new FruidFinderDalBuilder();
var dal = builder.Build();
var dateTimeService = builder.GetDateTimeService();
var review = builder.MakeReview();
review.ReviewId = 1;
review.UpdatedBy = FruidFinderDalBuilder.SecurityServiceUserId + 1;
review.UpdatedWhen = dateTimeService.UtcNow().AddDays(-1);
//Act
dal.SaveReview(review);
//Assert
review.UpdatedWhen.ShouldBeEquivalentTo(dateTimeService.UtcNow(),
"the updated date should be set to UtcNow when the review is saved");
review.UpdatedBy.ShouldBeEquivalentTo(FruidFinderDalBuilder.SecurityServiceUserId,
"the updated by should be set to the current user when a review is saved");
}
