* Improve console cmdlets tests
Main improvements refer to tests of the Write-Host cmdlet.
Original tests:
1. Slow because run external processes
2. Don't test colors and -NoNewLine in fact.
1. The original tests is preserved (deleted one as redundant) but marked
by 'Slow' tag. They is preserved because they actually check the output
on the work, not a test console.
2. Add negative color tests. (Code cover grow!)
3. Add tests based on TestHostCS. This test host has been refined so we
can see colors and a new line in output.
4. Add minor fixes for test modules loads.
Also I add support for Information stream. I originally planned to use
it but not actually used. However, I have left this as a useful addition
for future tests.
I wonder that a Write-Host console output is duplicated in Information
Stream - Is it by design? I left a debug print on this matter in the
test code.
* Fix after code review
* Corrections after code review
Suppress import-module warnings
Rename Describes
Add "-Object" test
Add Stream.Information tests with TestHostCS
* Add checks for Streams.Information and add comments
* Fix host remote test InvokeOnRunspace to work with AppVeyor
* Updated to use new local account for remoting tests.
* Set the LocalAccountTokenFilterPolicy as needed.
* Adding verbose messages for debugging.
* Storing creds using Export-CliXml
* Added CITravis skip for Windows only remoting test
* Moving tests back to 'Feature' scope
* Added AppVeyor environment variable check to prevent account creation on non-appveyor configurations
* Removed It block in BeforeAll block
* Moving tests back to 'Feature'
