Adding support for code coverage

Author: StanleyGoldman

appveyor.yml

@@ -3,6 +3,8 @@ version: '2.5.6.{build}'
 skip_tags: true
 install:
 - ps: |
+    choco install opencover.portable
+    choco install codecov
     $full_build = Test-Path env:GHFVS_KEY
     git submodule init
     git submodule sync
@@ -24,6 +26,10 @@ test:
   categories:
     except:
       - Timings
+after_test:
+- ps: |  
+    OpenCover.Console.exe -register:user -target:"nunit3-console.exe" -targetargs:"\"visualstudio\test\GitHub.Api.UnitTests\bin\Release\GitHub.Api.UnitTests.dll\" \"visualstudio\test\GitHub.App.UnitTests\bin\Release\GitHub.App.UnitTests.dll\" \"visualstudio\test\GitHub.Exports.Reactive.UnitTests\bin\Release\GitHub.Exports.Reactive.UnitTests.dll\" \"visualstudio\test\GitHub.Exports.UnitTests\bin\Release\GitHub.Exports.UnitTests.dll\" \"visualstudio\test\GitHub.Extensions.UnitTests\bin\Release\GitHub.Extensions.UnitTests.dll\" \"visualstudio\test\GitHub.InlineReviews.UnitTests\bin\Release\GitHub.InlineReviews.UnitTests.dll\" \"visualstudio\test\GitHub.Primitives.UnitTests\bin\Release\GitHub.Primitives.UnitTests.dll\" \"visualstudio\test\GitHub.TeamFoundation.UnitTests\bin\Release\GitHub.TeamFoundation.UnitTests.dll\" \"visualstudio\test\GitHub.UI.UnitTests\bin\Release\GitHub.UI.UnitTests.dll\" \"visualstudio\test\GitHub.VisualStudio.UnitTests\bin\Release\GitHub.VisualStudio.UnitTests.dll\" \"visualstudio\test\MetricsTests\MetricsTests\bin\Release\MetricsTests.dll\" \"visualstudio\test\TrackingCollectionTests\bin\Release\TrackingCollectionTests.dll\" --where \"cat != Timings\"" -output:".\coverage.xml"
+    codecov -f "coverage.xml"
 on_success:
 - ps: |
     if ($full_build) {