[#595] Fix custom error arguments comparison in Nettest

Description

Related issue(s)

Resolves #595 (closed)

Checklist for your Merge Request

Related changes (conditional)

• Tests (see short guidelines)

  • If I added new functionality, I added tests covering it.
  • If I fixed a bug, I added a regression test to prevent the bug from silently reappearing again.

• Documentation

  • I checked whether I should update the docs and did so if necessary:
    • Root README and other README.md files
    • Haddock
    • docs/
  • I updated changelog files of all affected packages released to Hackage if my changes are externally visible.

Stylistic guide (mandatory)

• My commits comply with the following policy.
• My code complies with the style guide.

assigned to @dmitriy.mozhevitin

added 18 commits

• 1f8f825a - [#571 (closed)] Change `@==` error message
• 07beea9c - [#571 (closed)] Replace exception constructors with exception predicates
• 7b4df307 - [#571 (closed)] Group "exception-handling" functions together
• 2dee11cb - [#571 (closed)] Delete `nmiCatchExpectedFailure`
• 52f771b6 - [#571 (closed)] Remove `addr` argument from `expect*` functions
• a59c5b2d - [#571 (closed)] Add missing exception predicates + `expect*` helpers
• 6e7bc027 - [#571 (closed)] Merge "exception handling" test suites
• 9ff5cfa1 - [#571 (closed)] Support checking a `FAILWITH` error is in a list of possible errors
• c8aa03d9 - [#571 (closed)] Improve callstack info for `attempt`/`catchExpectedFailure`/`expect*`
• c4a3e23d - [#571 (closed)] Rename `catchExpectedFailure` and `NettestFailure`
• 9429ce9e - [#571 (closed)] Delete re-export of `AddressOrAlias` from `Morley.Nettest.Abstract`
• 8e4ad138 - [#571 (closed)] Add `expectTransferFailure`
• 57ba84cd - [#571 (closed)] Fix callstack entries in cleveland error messages
• 646ed68a - [#571 (closed)] Add explicit `forall` to `expect*` functions
• 4f7889b3 - [#571 (closed)] Add address to `BadParameter` constructor
• 83178760 - [#571 (closed)] Change `expectTransferFailure` to take a list of exception predicates
• b0a17647 - [#571 (closed)] Add `failedWithAny`
• 0b09a5b5 - [#595 (closed)] Fix of custom erros comparison in Nettest

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• b6f2bb07 - [#595 (closed)] Fix of custom erros comparison in Nettest

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• 500116d3 - [#595 (closed)] Fix of custom erros comparison in Nettest

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• 6750fbdc - [#595 (closed)] Fix of custom erros comparison in Nettest

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• 26df92a1 - [#595 (closed)] Fix of custom erros comparison in Nettest

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• 5acbb062 - [#595 (closed)] Fix of custom erros comparison in Nettest

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• 313b3fc8 - [#595 (closed)] Fix of custom erros comparison in Nettest

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• 9bb79c6a - [#595 (closed)] Fix of custom erros comparison in Nettest

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• 61815779 - [#595 (closed)] Fix of custom erros comparison in Nettest

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marked this merge request as ready

marked the checklist item If I added new functionality, I added tests covering it. as completed

marked the checklist item If I fixed a bug, I added a regression test to prevent the bug from as completed

marked the checklist item Root README and other README.md files as completed

marked the checklist item Haddock as completed

marked the checklist item docs/ as completed

marked the checklist item I updated changelog files of all affected packages released to Hackage if my changes are externally visible. as completed

marked the checklist item My commits comply with the following policy. as completed

marked the checklist item My code complies with the style guide. as completed

requested review from @pasqu4le, @diogo.castro, and @Martoon