test: add test for inject in context

[Atinux]

Description

Adding missing tests for injecting in context

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-io]

Codecov Report

Merging #7252 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #7252   +/-   ##
=======================================
  Coverage   62.86%   62.86%           
=======================================
  Files          84       84           
  Lines        3409     3409           
  Branches      931      931           
=======================================
  Hits         2143     2143           
  Misses       1018     1018           
  Partials      248      248           

Flag	Coverage Δ
#unittests	62.86% <ø> (ø)

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[pi0]

Thnx 💯