Length cannot be less than zero exception

[pver]

Found this one in the Q&A on the visual studio gallery:
https://visualstudiogallery.msdn.microsoft.com/6950a046-8919-4935-8542-c6f37956f688

An exception occured: Length cannot be less than zero. Parameter name: length. Please refer to output window for more details.
I can't find the extra details it is talking about: nothing is shown in any of OpenCover's panes, or in the normal VisualStudio output pane.
...
I did some more troubleshooting and this is being caused by a specific test that looks like this:
[TestCase(false, TestName = "FirstTestCase")]
[TestCase(true, TestName = "SecondTestCase")]
public void TestSomething(bool input) {
...
}
Perhaps OpenCover UI is being confused by these tests being renamed by the TestName parameter to the TestCase attribute?

I did a quick test and can confirm this makes the plugin fail. The spinner ('Please wait while we collect coverage results') stays visible and a popup is shown:

[pver]

Extra info logged in the OpenCover.UI output window:

Parameter name: length
at System.String.InternalSubStringWithChecks(Int32 startIndex, Int32 length, Boolean fAlwaysCopy)
at System.String.Substring(Int32 startIndex, Int32 length)
at OpenCover.UI.Processors.NUnitTestExecutor.ReadTestCase(XElement ts)
at OpenCover.UI.Processors.NUnitTestExecutor.b__1(XElement ts)
at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() at System.Linq.Enumerable.<UnionIterator>d__881.MoveNext()
at System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() at System.Linq.Enumerable.<SelectManyIterator>d__142.MoveNext()
at System.Linq.Lookup2.CreateForJoin(IEnumerable1 source, Func2 keySelector, IEqualityComparer1 comparer)
at System.Linq.Enumerable.d__614.MoveNext() at OpenCover.UI.Processors.NUnitTestExecutor.UpdateTestMethodsExecution(IEnumerable1 tests)
at OpenCover.UI.Commands.ExecuteSelectedTestsCommand.b__1()

[pver]

@sawilde I'll take care of this one: I found the root cause for the problem and have an approach to fix it

[sawilde]

feel free to assign tickets to yourself :)

[pver]

Thanks for assigning :)
I couldn't find the assign functionality myself, I think it's because assigning also requires write access to the repository?

[sawilde]

Ahh - I didn't know that, learning more about github things everyday.

I did wonder about write access but I want devs to work on their own forks and submit pull requests before I do so - I only do very minor changes on the main repo i.e. readme.md files etc

[ashes999]

Looks the same as #125 . Is there any progress on this? I'm getting an identical stack dump today.