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using System;
using NUnit.Framework;
using System.Threading;
using System.IO;
using System.Threading.Tasks;
using System.Reflection;
using System.IO.IsolatedStorage;
namespace Xamarin.Forms.Core.UnitTests
{
[TestFixture]
public class UriImageSourceTests : BaseTestFixture
{
IsolatedStorageFile NativeStore { get; set; }
[SetUp]
public override void Setup()
{
base.Setup ();
Device.PlatformServices = new MockPlatformServices (getStreamAsync: GetStreamAsync);
NativeStore = IsolatedStorageFile.GetUserStoreForAssembly ();
networkcalls = 0;
}
[TearDown]
public override void TearDown()
{
base.TearDown ();
Device.PlatformServices = null;
string cacheName = "ImageLoaderCache";
if (NativeStore.DirectoryExists (cacheName)) {
foreach (var f in NativeStore.GetFileNames (cacheName + "/*"))
NativeStore.DeleteFile (Path.Combine (cacheName, f));
}
NativeStore.Dispose ();
NativeStore = null;
}
static Random rnd = new Random ();
static int networkcalls = 0;
static async Task<Stream> GetStreamAsync (Uri uri, CancellationToken cancellationToken)
{
await Task.Delay (rnd.Next (30, 2000));
if (cancellationToken.IsCancellationRequested)
throw new TaskCanceledException ();
networkcalls++;
return typeof(UriImageSourceTests).Assembly.GetManifestResourceStream (uri.LocalPath.Substring (1));
}
[Test]
[Ignore]
public void LoadImageFromStream ()
{
var loader = new UriImageSource {
Uri = new Uri ("http://foo.com/Images/crimson.jpg"),
};
Stream s0 = loader.GetStreamAsync ().Result;
Assert.AreEqual (79109, s0.Length);
}
[Test]
[Ignore]
public void SecondCallLoadFromCache ()
{
var loader = new UriImageSource {
Uri = new Uri ("http://foo.com/Images/crimson.jpg"),
};
Assert.AreEqual (0, networkcalls);
using (var s0 = loader.GetStreamAsync ().Result) {
Assert.AreEqual (79109, s0.Length);
Assert.AreEqual (1, networkcalls);
}
using (var s1 = loader.GetStreamAsync ().Result) {
Assert.AreEqual (79109, s1.Length);
Assert.AreEqual (1, networkcalls);
}
}
[Test]
[Ignore]
public void DoNotKeepFailedRetrieveInCache ()
{
var loader = new UriImageSource {
Uri = new Uri ("http://foo.com/missing.png"),
};
Assert.AreEqual (0, networkcalls);
var s0 = loader.GetStreamAsync ().Result;
Assert.IsNull (s0);
Assert.AreEqual (1, networkcalls);
var s1 = loader.GetStreamAsync ().Result;
Assert.IsNull (s1);
Assert.AreEqual (2, networkcalls);
}
[Test]
[Ignore]
public void ConcurrentCallsOnSameUriAreQueued ()
{
var loader = new UriImageSource {
Uri = new Uri ("http://foo.com/Images/crimson.jpg"),
};
Assert.AreEqual (0, networkcalls);
var t0 = loader.GetStreamAsync ();
var t1 = loader.GetStreamAsync ();
//var s0 = t0.Result;
using (var s1 = t1.Result) {
Assert.AreEqual (1, networkcalls);
Assert.AreEqual (79109, s1.Length);
}
}
[Test]
public void NullUriDoesNotCrash ()
{
var loader = new UriImageSource ();
Assert.DoesNotThrow (() => {
loader.Uri = null;
});
}
[Test]
public void UrlHashKeyAreTheSame ()
{
var urlHash1 = Device.PlatformServices.GetMD5Hash ("http://www.optipess.com/wp-content/uploads/2010/08/02_Bad-Comics6-10.png?a=bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbasdasdasdasdasasdasdasdasdasd");
var urlHash2 = Device.PlatformServices.GetMD5Hash ("http://www.optipess.com/wp-content/uploads/2010/08/02_Bad-Comics6-10.png?a=bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbasdasdasdasdasasdasdasdasdasd");
Assert.IsTrue (urlHash1 == urlHash2);
}
[Test]
public void UrlHashKeyAreNotTheSame ()
{
var urlHash1 = Device.PlatformServices.GetMD5Hash ("http://www.optipess.com/wp-content/uploads/2010/08/02_Bad-Comics6-10.png?a=bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbasdasdasdasdasasdasdasdasdasd");
var urlHash2 = Device.PlatformServices.GetMD5Hash ("http://www.optipess.com/wp-content/uploads/2010/08/02_Bad-Comics6-10.png?a=bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbasdasdasdasdasasdasda");
Assert.IsTrue (urlHash1 != urlHash2);
}
}
}
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