public async Task ShouldRetrievePhotosFromNasaApiNoSpecifiedCamera()
{
var options = new DbContextOptionsBuilder <NasaContext>()
.UseInMemoryDatabase(databaseName: "Nasa")
.Options;
using (var context = new NasaContext(options))
{
var rover = _fixture.Create <Business.Models.Rover>();
var camera = _fixture.Build <Business.Models.Camera>()
.With(x => x.Rover, rover)
.With(x => x.RoverId, rover.Id)
.Create();
context.Rovers.Add(rover);
context.Cameras.Add(camera);
context.SaveChanges();
var query = _fixture.Build <GetPhotos.Query>()
.With(x => x.RoverId, rover.Id)
.Without(x => x.Camera)
.Create();
var expectedPhotos = _fixture.Build <Business.Models.Photo>()
.With(x => x.Camera, camera)
.With(x => x.EarthDate, query.Date.Date)
.CreateMany()
.ToList();
var expectedResult = new GetPhotos.Result
{
Photos = expectedPhotos.Select(x => new GetPhotos.Photo {
Id = x.Id, ImgSrc = x.ImgSrc
}).ToList()
};
_api.GetPhotos(Arg.Is <string>(x => x == rover.Name), Arg.Is <DateTime>(x => x == query.Date.Date))
.Returns(new PhotoResponse
{
Photos = expectedPhotos
});
var handler = new GetPhotos.Handler(_api, context);
var result = await handler.Handle(query, CancellationToken.None);
//Check Result
result.Should().BeEquivalentTo(expectedResult);
//Check db to make sure they were inserted properly
context.Photos.Should().NotBeEmpty();
foreach (var photo in expectedPhotos)
{
context.Photos.Should().Contain(photo);
}
//Make sure the api was actually hit
await _api.Received().GetPhotos(Arg.Is <string>(x => x == rover.Name), Arg.Is <DateTime>(x => x == query.Date.Date));
}
}
public async Task <Result> Handle(Query query, CancellationToken cancellationToken)
{
//Check to see if the photos have already been gathered (will fail if it's today)
var gathered = false;
if (query.Date.Date != DateTime.Today)
{
gathered = _context.Photos.Any(x => x.EarthDate == query.Date.Date &&
x.Camera.Rover.Id == query.RoverId);
}
if (!gathered)
{
var rover = _context.Rovers.FirstOrDefault(x => x.Id == query.RoverId);
if (rover == null)
{
throw new Exception("Invalid rover Id");
}
//Call Nasa Api to get photos
var result = await _api.GetPhotos(rover.Name, query.Date.Date);
var gatheredPhotos = result.Photos;
foreach (var photo in gatheredPhotos)
{
photo.Camera = _context.Cameras.FirstOrDefault(x => x.RoverId == rover.Id && x.Name == photo.Camera.Name);
photo.CameraId = photo.Camera.Id;
}
//Save photos to db
_context.Photos.AddRange(gatheredPhotos);
await _context.SaveChangesAsync(cancellationToken);
}
//filter photos based on information sent from client
var photos = await _context.Photos.Where(x =>
x.EarthDate == query.Date.Date &&
x.Camera.Rover.Id == query.RoverId &&
(query.Camera == null || x.Camera.Name == query.Camera))
.Select(x => new Photo {
Id = x.Id, ImgSrc = x.ImgSrc
})
.ToListAsync(cancellationToken);
//return photos
return(new Result
{
Photos = photos
});
}
