Adding namespace checks and support for Power FX #330

[Grant-Archibald-MS]

Pull Request Template

Description

Adding the ability to require namespaces for Test Engine Power FX functions to prevent clashes root namespace functions provided in the Power FX engine.

Checklist

• The code change is covered by unit tests. I have added tests that prove my fix is effective or that my feature works
• I have performed end-to-end test locally.
• New and existing unit tests pass locally with my changes
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I used clear names for everything
• I have performed a self-review of my own code

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
Microsoft.PowerApps.TestEngine	0%	0%	1210	❌
Microsoft.PowerApps.TestEngine.Tests	0%	0%	646	❌
testengine.user.browser	58%	50%	15	✔
Microsoft.PowerApps.TestEngine	90%	86%	1214	✔
Microsoft.PowerApps.TestEngine	0%	0%	1210	❌
Microsoft.PowerApps.TestEngine.Tests	0%	0%	646	❌
testengine.user.browser	58%	50%	15	✔
Microsoft.PowerApps.TestEngine	5%	3%	1210	❌
Microsoft.PowerApps.TestEngine.Tests	1%	2%	646	❌
testengine.provider.canvas	81%	87%	93	✔
Microsoft.PowerApps.TestEngine	90%	86%	1214	✔
Microsoft.PowerApps.TestEngine	1%	0%	1210	❌
Microsoft.PowerApps.TestEngine.Tests	0%	1%	646	❌
testengine.user.environment	95%	91%	31	✔
Microsoft.PowerApps.TestEngine	1%	0%	1210	❌
testengine.module.pause	100%	100%	6	✔
Microsoft.PowerApps.TestEngine	5%	3%	1210	❌
Microsoft.PowerApps.TestEngine.Tests	1%	2%	646	❌
testengine.provider.canvas	81%	87%	93	✔
Microsoft.PowerApps.TestEngine	1%	0%	1210	❌
testengine.module.pause	100%	100%	6	✔
Microsoft.PowerApps.TestEngine	1%	0%	1210	❌
Microsoft.PowerApps.TestEngine.Tests	0%	1%	646	❌
testengine.user.environment	95%	91%	31	✔
Summary	20% (4786 / 48984)	19% (1766 / 11132)	16274	✔

Minimum allowed line rate is 15%