added an attribute in ReadOnlyColelctionDebuggerView.cs

[ExcludeFromCodeCoverage] in System.Diagnostics.CodeAnalysis
added test in UrihelperTests.cs

added test Uri.RemoveUrlParameter
added test UriHelper.AppendUrlParameter and Uri.AppendUrlParameter
Deleted comments
Assert ArgumentNullException in SimpleServiceContainer.cs
added BaseProvider circle detection
separation tests in UriHelperTests.cs
Added Tests in FIFOTests.cs

added Throws Exception Test and FIFO Peek() Test
added Test BaseProvider circle detection
added test in SortedArrayListTests.cs

and IndexOf's comment is modif
minor change
Added Non-regression testing in OSVersionInfo
Added test on event for ObservableSortedArrayList
Deleted useless tests
Merge branch 'develop' into code-coverage
deleted useless tests
Added test on FileUtil
Tests in FileUtilTests.cs is finished
Minor change
Merge branch 'develop' into code-coverage
Added tests for EnumerableExtension