Refactor tests / add new tests

[codecov[bot]]

Codecov Report

Merging #61 (f17077d) into master (7486fc2) will increase coverage by 24.02%. Report is 1 commits behind head on master. The diff coverage is 98.45%.

@@             Coverage Diff             @@
##           master      #61       +/-   ##
===========================================
+ Coverage   70.54%   94.56%   +24.02%     
===========================================
  Files          45       62       +17     
  Lines        2054     3037      +983     
  Branches      216      282       +66     
===========================================
+ Hits         1449     2872     +1423     
+ Misses        511       50      -461     
- Partials       94      115       +21     

Files Changed	Coverage Δ
...Shell.WindowsSearchManager/SearchApiCommandBase.cs	90.90% <ø> (ø)
...hell.WindowsSearchManager/SearchCatalogCommands.cs	93.45% <ø> (+63.69%)	:arrow_up:
...hell.WindowsSearchManager/SearchManagerCommands.cs	94.00% <ø> (ø)
...chManager/internal/SearchRegistryProviderPSCore.cs	75.00% <ø> (ø)
...anager/internal/SearchRegistryProviderPSDesktop.cs	73.33% <ø> (ø)
...Shell.WindowsSearchManager.Tests/ExceptionParam.cs	100.00% <ø> (ø)
...ndowsSearchManager.Tests/SearchCatalogInfoTests.cs	100.00% <ø> (ø)
...ndowsSearchManager.Tests/SearchManagerInfoTests.cs	100.00% <ø> (ø)
....WindowsSearchManager.Tests/SearchRootInfoTests.cs	100.00% <ø> (ø)
....WindowsSearchManager.Tests/SearchRuleInfoTests.cs	100.00% <ø> (ø)
... and 42 more

... and 2 files with indirect coverage changes