Update Marker test

[iche033]

Signed-off-by: Ian Chen [email protected]

🦟 Bug fix

Summary

Added more tests to increase code coverage

Checklist

• Signed all commits for DCO
• Added tests
• Updated documentation (as needed)
• Updated migration guide (as needed)
• Consider updating Python bindings (if the library has them)
• codecheck passed (See contributing)
• All tests passed (See test coverage)
• While waiting for a review on your PR, please help review another open pull request to support the maintainers

Note to maintainers: Remember to use Squash-Merge and edit the commit message to match the pull request summary while retaining Signed-off-by messages.

[codecov]

Codecov Report

Merging #673 (6fce8d1) into ign-rendering6 (7e6e45c) will increase coverage by 0.77%.
The diff coverage is n/a.

@@                Coverage Diff                 @@
##           ign-rendering6     #673      +/-   ##
==================================================
+ Coverage           53.81%   54.58%   +0.77%     
==================================================
  Files                 202      202              
  Lines               21106    21106              
==================================================
+ Hits                11358    11521     +163     
+ Misses               9748     9585     -163     

Impacted Files	Coverage Δ
include/ignition/rendering/base/BaseGizmoVisual.hh	88.02% <0.00%> (+0.49%)	⬆️
ogre2/src/Ogre2Capsule.cc	66.10% <0.00%> (+5.08%)	⬆️
src/TransformController.cc	90.18% <0.00%> (+31.59%)	⬆️
ogre2/src/Ogre2Marker.cc	74.07% <0.00%> (+33.95%)	⬆️

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