Fixes #1332: Deep Comparison for Array-based Concurrency tokens.

[anasik]

Fixes #1332

A popular convention today for concurrency check fields is to use a byte[] field called RowVersion with a Timestamp or ConcurrencyCheck attribute.

However, when using such a field, the queryOptions.ifNoneMatch.ApplyTo call was having absolutely no effect. That's because ApplyTo was internally using Expression.Equal which is perfect for value types but doesn't fare very well against reference types or particularly Arrays.

I fixed this by adding a case for arrays that, through a helper method, generates an expression that performs a deep comparison.

[anasik]

@WanjohiSammy , may I interest you in this?

[anasik]

@xuzhg, it's been a little quiet here. Maybe I can help with something?

[anasik]

@xuzhg , @WanjohiSammy, I see you guys were busy with the 8.2.6 release. Just bumping this in case it got lost or forgotten.

[anasik]

@WanjohiSammy, bumping this up just in case.

[WanjohiSammy]

@anasik tests are missing. Can you add several tests for this Deep Comparison feature

[anasik]

@anasik tests are missing. Can you add several tests for this Deep Comparison feature

@WanjohiSammy,
All I did was prove that an existing test was failing under certain circumstances and then I passed that test by adding the deep comparison feature. Since there's already a test that passes only when the feature exists, I am not sure what an additional test would look like?

If there's something specific you're looking for in terms of tests, please let me know and I'll see what I can do?

[WanjohiSammy]

I want to test and make sure that this is not a breaking change

[anasik]

I want to test and make sure that this is not a breaking change

@WanjohiSammy, makes perfect sense. Let me know if any tests are failing and I'll take a look.

[anasik]

@WanjohiSammy are all existing build tests passing?