public async Task RetrieveAllAsync_ShouldReturnAllImages()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
// Act
var retrievedImages = await repository.RetrieveAllAsync();
// Assert
Assert.True(retrievedImages.SequenceEqual(context.Images, new ImagePropertiesComparer()));
}
public async Task RetrieveAsync_IdGiven_ShouldReturnNull()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
string id = "randomIdNotExisting";
// Act
Image retrieved = await repository.RetrieveAsync(id);
// Assert
Assert.Null(retrieved);
}
public async Task CountAsync_ShouldReturnNumberOfRows()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
int numberOfRows = context.Images.Count();
// Act
int returnedNumberOfRows = await repository.CountAsync();
// Assert
Assert.Equal(numberOfRows, returnedNumberOfRows);
}
public async Task RetrieveAsync_IndexGiven_ShouldReturnNull()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
int index = int.MaxValue;
// Act
Image retrieved = await repository.RetrieveAsync(index);
// Assert
Assert.Null(retrieved);
}
public async Task RetrieveAsync_IdGiven_ShouldReturnImage()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
Image toRetrieve = new Image {
Id = "bar", Url = "www.bar.com", Score = 120.43M, Votes = 2435
};
// Act
Image retrieved = await repository.RetrieveAsync(toRetrieve.Id);
// Assert
Assert.Equal(toRetrieve, retrieved, new ImagePropertiesComparer());
}
public async Task RetrieveAsync_IndexGiven_ShouldReturnImage()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
Image toRetrieve = new Image {
Id = "foo", Url = "www.foo.com", Score = 452.865M, Votes = 985
};
// Act
Image retrieved = await repository.RetrieveAsync(3);
// Assert
Assert.Equal(toRetrieve, retrieved, new ImagePropertiesComparer());
}
public async Task DeleteAsync_IdGiven_ShouldDeleteInDatabase()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
Image toDelete = context.Images.Where(img => img.Id == "foo").Single();
// Act
bool?isDeleted = await repository.DeleteAsync(toDelete.Id);
Image afterDeletion = context.Images.Where(img => img.Id == toDelete.Id).SingleOrDefault();
// Assert
Assert.True(isDeleted);
Assert.Null(afterDeletion);
}
public async Task CreateAsync_ImageGiven_ShouldCreateInDatabase()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Image toCreate = new Image {
Id = "anId", Url = "www.awebsite.com", Score = 1700.578M, Votes = 435
};
Image retrievedBeforeCreation = context.Images.Where(img => img.Id == "anId").SingleOrDefault();
// Act
Image returned = await repository.CreateAsync(toCreate);
Image retrievedAfterCreation = context.Images.Where(img => img.Id == "anId").Single();
// Assert
Assert.Null(retrievedBeforeCreation);
Assert.Equal(toCreate, returned, new ImagePropertiesComparer());
Assert.Equal(toCreate, retrievedAfterCreation, new ImagePropertiesComparer());
}
public async Task UpdateAsync_IdAndImageGiven_ShouldUpdataInDatabase()
{
// Arrange
CatmashRepository repository = new CatmashRepository(context);
Init();
Image toUpdate = context.Images.Where(img => img.Id == "foo").Single();
toUpdate.Url = toUpdate.Url + "Random seed";
toUpdate.Score = ++toUpdate.Score;
toUpdate.Votes = ++toUpdate.Votes;
// Act
Image returned = await repository.UpdateAsync(toUpdate.Id, toUpdate);
Image updated = context.Images.Where(img => img.Id == toUpdate.Id).Single();
// Assert
Assert.Equal(toUpdate, returned, new ImagePropertiesComparer());
Assert.Equal(toUpdate, updated, new ImagePropertiesComparer());
}