Add tracetest example for testing instrumentation

[adity1raut]

Fixes #7051

This PR adds a basic example demonstrating how to test tracing instrumentation using the tracetest.SpanRecorder from the OpenTelemetry SDK.

✅ It ensures:

• A span is emitted when a function is instrumented
• The span name is as expected

Inspired by:

• logtest package example

[adity1raut]

@pellared ,
Sir, I am a first-time open source contributor, and this is my first issue. I am trying to fix it, and I sincerely request your guidance. I will follow all the guidelines properly. I understand I am taking more time than expected, but I genuinely want to solve this issue. Kindly guide me, sir

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.9%. Comparing base (186def7) to head (f4b480d).
Report is 15 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #7074   +/-   ##
=====================================
  Coverage   82.9%   82.9%           
=====================================
  Files        262     262           
  Lines      24460   24460           
=====================================
  Hits       20281   20281           
  Misses      3801    3801           
  Partials     378     378           

see 4 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[adity1raut]

@pellared
Sir, I have updated the PR. Please check it and share your feedback. Thank you!

[pellared]

In my opinion the following is still not resolved:

#7052 (comment) remains unresolved, and a similar concern was raised before as well: #7052 (review)

Can you please refactor the example so that it is more similar to https://github.com/open-telemetry/opentelemetry-go/blob/main/log/logtest/example_test.go? This means e.g.:

1. only provide one example
2. add t := &testing.T{} // Provided by testing framework. so that we showcase that it is supposed to be used in unit tests
3. write the test so that it passes (empty output)

[adity1raut]

Thank you for the feedback @pellared ,

I understand now that the example should closely follow the structure of log/logtest/example_test.go. I will refactor the code to include:

1,A single test example
2.t := &testing.T{} to simulate the testing environment
3.Ensure the test passes with no output

I’ll make these changes shortly. Please let me know if there’s anything else I should consider.

[dmathieu]

I would recommend not using AI to generate the code and your responses on this PR. You'll learn a lot more in the process.

[adity1raut]

I would recommend not using AI to generate the code and your responses on this PR. You'll learn a lot more in the process.

Thank you for the suggestion. I understand Your point and will make sure to work through the code and Responses on my own to learn Better from the process. However, I did use AI for some minor corrections while solving the issue. I appreciate your guidance

[adity1raut]

Sir, I am getting this error, but when I check it on my local system, it doesn't show any error, Could you please guide me on how to solve this issue?

[adity1raut]

[dmathieu]

This is still not a runnable example (you also removed some of the recommended changes from earlier, such as the global tracer provider).

I would recommend looking into https://go.dev/blog/examples to better understand what runnable examples are in Go.

[adity1raut]

This is still not a runnable example (you also removed some of the recommended changes from earlier, such as the global tracer provider).

I would recommend looking into https://go.dev/blog/examples to better understand what runnable examples are in Go.

Thank you for your valuable feedback sir I will learn and update a code

[adity1raut]

This is output You Want ?

[adity1raut]

@pellared The PR is ready for review. Please have a look when you get time.

[adity1raut]

Hi @dmathieu , this is the output you were looking for. Can I go ahead and push the code?

[dmathieu]

This input only says the tests pass. So sure, push away.

[adity1raut]

This input only says the tests pass. So sure, push away.

I pushed the code

[adity1raut]

defer func() {
_ = tp.Shutdown(ctx)
}()
This Function Can Slove this Git Action

[dmathieu]

Yes, ignoring the error with an anonymous function should fix the linter.

[adity1raut]

Yes, ignoring the error with an anonymous function should fix the linter.

Printing error is Better or not

[adity1raut]

@dmathieu , please clarify, then I will make the necessary changes in the code

[dmathieu]

No, printing the error makes no sense in the context of this example.

[adity1raut]

No, printing the error makes no sense in the context of this example.

I will change the code. Please check the PR.