Ensure that the GlobalGrailsClassInjectorTransformation fails in the grails-core build if the wrong directory is passed

[jdaugherty]

After trying to build the 8.0.x build, it was not reproducible because the grails.factories file in grails-core was merged with grails-core & grails-gsp projects somehow. The only way I can see this happening is if there is an incorrect base directory or a missing directory. This change is meant to be a "catch all" to find these cases. The goal is to merge this and then retry the 8.0.0-M2 build and see if this helps.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 49.4955%. Comparing base (c8ca1eb) to head (e7e083e).
⚠️ Report is 31 commits behind head on 8.0.x.

Files with missing lines	Patch %	Lines
...ion/GlobalGrailsClassInjectorTransformation.groovy	80.0000%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@                Coverage Diff                 @@
##                8.0.x     #15799        +/-   ##
==================================================
+ Coverage     49.4560%   49.4955%   +0.0395%     
- Complexity      16640      16701        +61     
==================================================
  Files            1944       1947         +3     
  Lines           92379      92473        +94     
  Branches        16130      16152        +22     
==================================================
+ Hits            45687      45770        +83     
+ Misses          39594      39593         -1     
- Partials         7098       7110        +12     

Files with missing lines	Coverage Δ
...ion/GlobalGrailsClassInjectorTransformation.groovy	52.3077% <80.0000%> (+4.4130%)	⬆️

... and 15 files with indirect coverage changes

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[matrei]

Strange that Gradle would have such a bug.

[matrei]

Suggested change

System.clearProperty('base.dir')

[jdaugherty]

For consistent state I think we should always clear before running the test. I've added a RestoreSystemProperties to the top though.

[jamesfredley]

Not surprising to me, unfortunately. But is is nice we can usually wrap it with a little duct tape and move forward thanks to Groovy.