Add support for rolled variadics with expecter structs

[dillonstreator]

Description

Adds support for --unrolled-variadics=false and --with-expecter

Followup from #624 (comment)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Version of Golang used when building/testing:

• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20

How Has This Been Tested?

I have removed the test which asserted an error for this newly supported config and replaced with a test asserting the new functionality.

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• 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 have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[codecov]

Codecov Report

Patch coverage: 100.00000% and project coverage change: +0.04390 🎉

Comparison is base (b964d01) 76.25000% compared to head (ae9feff) 76.29390%.

Additional details and impacted files

@@                 Coverage Diff                 @@
##              master        #629         +/-   ##
===================================================
+ Coverage   76.25000%   76.29390%   +0.04389%     
===================================================
  Files              7           7                 
  Lines           2160        2164          +4     
===================================================
+ Hits            1647        1651          +4     
  Misses           376         376                 
  Partials         137         137                 

Impacted Files	Coverage Δ
pkg/generator.go	93.35938% <100.00000%> (+0.03476%)	⬆️

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[LandonTClipp]

This is definitely the right direction, thank you very much. My only modification would be with the tests, described below.

[LandonTClipp]

I am trying to move away from the tests asserting the exact string of the generated mock as we currently have to modify like 40 different tests whenever the mock generation code changes. Instead, the better way to do this is add the mock with the specified config into the .mockery.yaml file, and run tests off of that mock: https://github.com/vektra/mockery/blob/v2.27.1/.mockery.yaml#L17-L23

You'd need to add another section under the configs of RequesterVariadic, something like:

- mockname: RequesterVariadicExpecterAndUnrollVariadic
  unroll-variadic: false
  with-expected: true

It should be good enough for now to commit the mock and run the test. I'm going to implement a change to CI/CD so that it generates the mocks before running tests (it currently just generates them after).

[dillonstreator]

Adjusted to follow this testing pattern. I also cleaned up other tests to use the require interface and removed the incorrect messages.

[LandonTClipp]

Great!

[LandonTClipp]

This is great, thanks for changing the tests.