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Andrew
c0aafdb3d0
This fixes issue #2607. 'RequiredModules' is a field in module manifest that can reference other modules using ModuleSpecification format. The basic version of this format (just module name) was working fine, however, there was a problem when a more detailed version of the format was used (the one that uses module versions or/and GUIDs). During module import, there is a check for cyclic references through 'RequiredModules' field. The bug was in this check for cyclic references, related to comparison rules for ModuleSpecification objects - as a result, the code was incorrectly reporting 'cyclic reference' error in cases when there was none. Also, added tests for different ModuleSpecification formats and a test for error when there is actually a cyclic reference.
Testing
The tests are organized by testing language. Thus Pester tests, which are written in the PowerShell language, are in ./powershell and xUnit tests, written in C#, are in ./csharp. The sanity tests for the Full .NET build of PowerShell are in ./fullclr, and the third-party shebang test is in ./shebang.