test(assertions): fixed flaky test (async w/real time)

[fredbi]

Make expectation more tolerant to jitter (incompressible when running on CI).

• fixes Flaky test on windows: non deterministitic count expectations in Eventually #125

Change type

Please select: 🆕 New feature or enhancement|🔧 Bug fix'|📃 Documentation update

Short description

Fixes

Full description

Checklist

• I have signed all my commits with my name and email (see DCO. This does not require a PGP-signed commit
• I have rebased and squashed my work, so only one commit remains
• I have added tests to cover my changes.
• I have properly enriched go doc comments in code.
• I have properly documented any breaking change.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.66%. Comparing base (df56554) to head (1913850).
⚠️ Report is 1 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #128      +/-   ##
==========================================
- Coverage   91.68%   91.66%   -0.02%     
==========================================
  Files          97       97              
  Lines       12623    12623              
==========================================
- Hits        11573    11571       -2     
- Misses        827      828       +1     
- Partials      223      224       +1     

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