CSHARP-5423: Remove deprecated field from GridFS unified tests

[papafe]

No description provided.

[papafe]

Not sure if we want to keep them, but for now I've moved the legacy tests inside the "legacy" folder.

[rstam]

Please make the commit tree linear before we review.

[papafe]

@rstam Rebased on main

[papafe]

Converted it to draft as I need to finish a couple of things

[papafe]

@BorisDog regarding the deprecated fields, namely "contentType" and "aliases", I've removed them from the registered members of the serializers and also from a test method input given they were not used.
Apart from that, no need to do more, since all the extra members are just kept into GridFSFileInfo.BackingDocument (a BsonDocument). This test verifies that:

mongo-csharp-driver/tests/MongoDB.Driver.Tests/GridFS/GridFSFileInfoTests.cs

Lines 72 to 95 in 476af2b

	[Theory]
	[ParameterAttributeData]
	public void ExtraElements_should_be_deserialized_correctly(
	[Values(new string[0], new[] { "x" }, new[] { "x", "y" }, new[] { "ExtraElements" })]
	string[] names)
	{
	var document = CreateFilesCollectionDocument();
	var extraElements = new BsonDocument();
	var value = 1;
	foreach (var name in names)
	{
	extraElements.Add(name, value++);
	}
	document.Merge(extraElements, overwriteExistingElements: false);
	var subject = DeserializeFilesCollectionDocument(document);
	foreach (var element in extraElements)
	{
	subject.BackingDocument[element.Name].Should().Be(element.Value);
	}
	}

[BorisDog]

Looks good overall.
There was some confusion with the legacy tests, as I thought the spec contains both legacy and unified folders.
We need to align with the spec tests structure, and have just unified tests (and remove legacy runners).
So we need to do CSHARP-3587 as prerequisite. We could also address CSHARP-3587 as part of this ticket.

[BorisDog]

Copyright 2010

[papafe]

Corrected. I noticed that there are other files with various years, mostly in the test project.

[papafe]

@BorisDog, I've removed the legacy tests and their runners, so I suppose CSHARP-3587 could also be closed when this is merged

[BorisDog]

LGTM!