Add testing.TB to mock.Mock in constructors

[Gevrai]

Description

Following the recent addition of constructors for mocks by @grongor in #406, this PR is a suggestion to also register the testing.TB interface on mock.Mock.

This is a feature in testify's mock.Mock that makes it so that whenever a mock is not matched, the whole suite does not panic, but instead makes the test fails. It is in some way breaking in the sense that the behaviour that some might be used to (ie. stop the world panic) will not be the same, but while we added a cleanup function I think this is desirable.

This is of course debatable 😃

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

How Has This Been Tested?

Added generation to related files and tested locally with go test ./...

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-commenter]

Codecov Report

Merging #455 (c7e7f4f) into master (aad3571) will decrease coverage by 0.03%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##           master     #455      +/-   ##
==========================================
- Coverage   70.76%   70.73%   -0.04%     
==========================================
  Files           7        7              
  Lines        1293     1295       +2     
==========================================
+ Hits          915      916       +1     
- Misses        325      326       +1     
  Partials       53       53              

Impacted Files	Coverage Δ
pkg/fixtures/mocks/expecter.go	83.33% <0.00%> (-0.67%)	⬇️
pkg/generator.go	90.83% <100.00%> (+0.01%)	⬆️

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[grongor]

I didn't know about this functionality before...nice one. LGTM.

[LandonTClipp]

I think this technically wouldn't be a breaking change so long as some test in a suite would fail. I like this change, looks good. Thatnks!

[LandonTClipp]

Formatting issue here (tab vs space), could you correct the line before this?

[Gevrai]

fixed!