/// <summary>
/// Constructor
/// </summary>
/// <param name="stream">The stream to use.</param>
/// <param name="close">Should the stream be closed before SaveChanges returns.</param>
/// <param name="args">Additional arguments to apply to the request before sending it.</param>
internal DataServiceSaveStream(Stream stream, bool close, DataServiceRequestArgs args)
{
Debug.Assert(stream != null, "stream must not be null.");
this.stream = stream;
this.close = close;
this.args = args;
#if DEBUG
this.deserializing = false;
#endif
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="stream">The stream to use.</param>
/// <param name="close">Should the stream be closed before SaveChanges returns.</param>
/// <param name="args">Additional arguments to apply to the request before sending it.</param>
internal DataServiceSaveStream(Stream stream, bool close, DataServiceRequestArgs args)
{
Debug.Assert(stream != null, "stream must not be null.");
this.stream = stream;
this.close = close;
this.args = args;
#if DEBUG
this.deserializing = false;
#endif
}
public void HeadersInArgsShouldNotBeModifiedDuringGetReadStream()
{
// Regression coverage for: SendingRequest cannot set Accept-Charset header for SetSaveStream if reusing request arg
new TransportLayerThatAlwaysSendsBack204(this.testSubject);
var entity = new TestEntityType();
var descriptor = this.AttachAndGetDescriptor(entity);
descriptor.ReadStreamUri = new Uri("http://fakeReadStreamUri.org/");
var args = new DataServiceRequestArgs();
this.testSubject.GetReadStream(entity, args);
args.Headers.Should().BeEmpty();
}
IEnumerable<Tuple<Action<DataServiceContext, SaveChangesOptions>, List<Version>, string>> GetNamedStreamTests()
{
// attach and save named stream, expect failure
yield return new Tuple<Action<DataServiceContext, SaveChangesOptions>, List<Version>, string>(
(ctx, saveChangeOption) =>
{
PeopleManager andy = new PeopleManager { ID = 2 };
ctx.AttachTo("People", andy);
ctx.SetSaveStream(andy, "Photo", new MemoryStream(), true, "abc/pqr");
ctx.SaveChanges(saveChangeOption);
},
new List<Version>() { V4 },
"The stream named 'Photo' cannot be modified because it does not have an edit-media link. Make sure that the stream name is correct and that an edit-media link for this stream is included in the entry element in the response.");
// attach and load named stream, expect failure
yield return new Tuple<Action<DataServiceContext, SaveChangesOptions>, List<Version>, string>(
(ctx, saveChangeOption) =>
{
PeopleManager andy = new PeopleManager { ID = 2 };
ctx.AttachTo("People", andy);
ctx.GetReadStream(andy, "Photo", new DataServiceRequestArgs());
ctx.SaveChanges(saveChangeOption);
},
new List<Version>() { V4 },
"The entity does not have a stream named 'Photo'. Make sure that the name of the stream is correct.\r\nParameter name: name");
// retrive entity and save/load named stream
yield return new Tuple<Action<DataServiceContext, SaveChangesOptions>, List<Version>, string>(
(ctx, saveChangeOption) =>
{
var query = ctx.CreateQuery<Person>("People").Where(p => p.ID == 3);
Employee pratik = (Employee)query.Single();
ctx.SetSaveStream(pratik, "Photo", new MemoryStream(new byte[] { 1,2,3}), true, "abc/pqr");
ctx.SaveChanges(saveChangeOption);
DataServiceRequestArgs arg = new DataServiceRequestArgs() { AcceptContentType = "abc/pqr" };
var response = ctx.GetReadStream(pratik, "Photo", new DataServiceRequestArgs() { AcceptContentType = "abc/pqr" });
byte[] buffer = new byte[4];
Assert.AreEqual(3, response.Stream.Read(buffer, 0, 4));
Assert.IsTrue(buffer[0] == 1 && buffer[1] == 2 && buffer[2] == 3);
},
new List<Version>() { V4, V4, V4 },
null);
}
