Change default time to None in IterState

[GermanHeim]

📝 Description

Updated the IterState struct to initialize the time field as None instead of Some(Duration::ZERO). This should fix the timer showing as 0 ns, which was introduced in commit 6492020.

🔨 Changes Made

• Updated the IterState struct to initialize the time field as None instead of Some(Duration::ZERO).
• Modified tests to take into account this implementation

🔗 Related Issues

Closes #640

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.74%. Comparing base (b300285) to head (000c859).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #641      +/-   ##
==========================================
+ Coverage   91.72%   91.74%   +0.01%     
==========================================
  Files         177      177              
  Lines       20840    20840              
==========================================
+ Hits        19116    19119       +3     
+ Misses       1724     1721       -3     

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[stefan-k]

Lovely, thanks!
Have you tested how this affects the observers?

[GermanHeim]

From what I can see, the only observer that actually uses time is the observer spectator (in observe_iter and handle_connection).

Currently, it works because it uses .unwrap_or(std::time::Duration::from_secs(0)),, but this approach isn’t ideal.

One option would be to change the time field in Samples from Duration to Option<Duration> and adjust the code accordingly. Does that sound reasonable to you?