[Shims, W3C.Tests] Nullable

[ysolomchenko]

Towards https://github.com/open-telemetry/opentelemetry-dotnet/issues/3958

Changes

• Shims.OpenTracing mark as nullable
• Instumentation.W3cTraceContext.Tests mark as nullable

Merge requirement checklist

• [x] CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)
• [x] Unit tests added/updated
• [ ] Appropriate CHANGELOG.md files updated for non-trivial changes
• [x] Changes in public API reviewed (if applicable)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 82.35294% with 6 lines in your changes missing coverage. Please review.

Project coverage is 86.22%. Comparing base (6250307) to head (c230635). Report is 316 commits behind head on main.

Files with missing lines	Patch %	Lines
src/OpenTelemetry.Shims.OpenTracing/SpanShim.cs	69.23%	4 Missing :warning:
...OpenTelemetry.Shims.OpenTracing/SpanBuilderShim.cs	94.11%	1 Missing :warning:
src/OpenTelemetry.Shims.OpenTracing/TracerShim.cs	50.00%	1 Missing :warning:

Additional details and impacted files

[](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry) ```diff @@ Coverage Diff @@ ## main #5797 +/- ## ========================================== + Coverage 83.38% 86.22% +2.84% ========================================== Files 297 257 -40 Lines 12531 11169 -1362 ========================================== - Hits 10449 9631 -818 + Misses 2082 1538 -544 ``` | [Flag](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry) | `?` | | | [unittests-Project-Experimental](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry) | `85.95% <82.35%> (?)` | | | [unittests-Project-Stable](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry) | `86.22% <82.35%> (?)` | | | [unittests-UnstableCoreLibraries-Experimental](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry) | `85.71% <82.35%> (?)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files with missing lines](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry) | Coverage Δ | | |---|---|---| | [...penTelemetry.Shims.OpenTracing/ScopeManagerShim.cs](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797?src=pr&el=tree&filepath=src%2FOpenTelemetry.Shims.OpenTracing%2FScopeManagerShim.cs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry#diff-c3JjL09wZW5UZWxlbWV0cnkuU2hpbXMuT3BlblRyYWNpbmcvU2NvcGVNYW5hZ2VyU2hpbS5jcw==) | `96.77% <100.00%> (ø)` | | | [...OpenTelemetry.Shims.OpenTracing/SpanBuilderShim.cs](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797?src=pr&el=tree&filepath=src%2FOpenTelemetry.Shims.OpenTracing%2FSpanBuilderShim.cs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry#diff-c3JjL09wZW5UZWxlbWV0cnkuU2hpbXMuT3BlblRyYWNpbmcvU3BhbkJ1aWxkZXJTaGltLmNz) | `90.58% <94.11%> (-0.11%)` | :arrow_down: | | [src/OpenTelemetry.Shims.OpenTracing/TracerShim.cs](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797?src=pr&el=tree&filepath=src%2FOpenTelemetry.Shims.OpenTracing%2FTracerShim.cs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry#diff-c3JjL09wZW5UZWxlbWV0cnkuU2hpbXMuT3BlblRyYWNpbmcvVHJhY2VyU2hpbS5jcw==) | `91.66% <50.00%> (ø)` | | | [src/OpenTelemetry.Shims.OpenTracing/SpanShim.cs](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797?src=pr&el=tree&filepath=src%2FOpenTelemetry.Shims.OpenTracing%2FSpanShim.cs&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry#diff-c3JjL09wZW5UZWxlbWV0cnkuU2hpbXMuT3BlblRyYWNpbmcvU3BhblNoaW0uY3M=) | `80.20% <69.23%> (-1.32%)` | :arrow_down: | ... and [219 files with indirect coverage changes](https://app.codecov.io/gh/open-telemetry/opentelemetry-dotnet/pull/5797/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-telemetry)

[github-actions[bot]]

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