MESH-7783 Improve unit test coverage (#28)

* remove tests that required code changes
* restore accidentally deleted file

Signed-off-by: lszabo <[email protected]>

---------

Signed-off-by: lszabo <[email protected]>
Co-authored-by: lszabo <[email protected]>

Author: RazorSh4rk

.gitignore

@@ -21,3 +21,6 @@ manager
 # Dependency directories (remove the comment below to include it)
 # vendor/
 .idea
+
+# Unit test documentation (excluded from version control)
+unit-test-notes/