* Implement checking only exported fields

Co-authored-by: Anthony Chang <[email protected]>

* Update comment

* Run go generate

* Make compatiable with Go 1.16.5

* Fix go generate files

* Fix white space changes

* Fix whitespace changes

* Fix whitespace changes in gogenerate files

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Co-authored-by: Anthony Chang <[email protected]>

* assert: rename and refactor TestContainsFailMessage

I've renamed it to TestContainsNotContains and added a test case
structure so that I can use this test to validate the failure messages
from both Contains and NotContains,

There are no functional changes here, strictly refactoring. A new test
case will be added in a subsequent change.

* assert: fix error message formatting for NotContains

It was using "%s" to format the s and contains arguments, but these
could be any type that supports iteration such as a map. In this case
of NotContains failing against a map, it would print something like:

   "map[one:%!s(int=1)]" should not contain "one"

Fix this using "%#v" as was already done for Contains and added test
cases covering both the "len()" / iterable failure messages as well as
the Contains/NotContains failure case.

The new message for this example map would be something like:

    map[string]int{"one":1} should not contain "one"

* allow testing for functional options

* add linting docs

* use reflect magic to obtain FunctionalOption name

Co-authored-by: dillonstreator <[email protected]>

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Co-authored-by: dillonstreator <[email protected]>

* add EventuallyWithT assertion

* Change "EventuallyWithT" condition acceptance to no-errors raised

This change updates the "EventuallyWithT" assertion variants (regular, formatted,
requirement) to consider a condition as "met" if no assertion errors were raised
in a tick.

This allows to write easier conditions which simply contain assertions, without
needing to return a bool. The equivalent of a condition returning true in the
previous implementation would be a a condition with a single "assert.True(..)" call.

* Declare the "Collect.Copy(T)" method as a testing helper

* run go generate

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Co-authored-by: Arik Kfir <[email protected]>

* EqualExportedValues: Handle pointer and slice fields

* Update assert/assertions.go

Co-authored-by: Michael Pu <[email protected]>

* Reduce redundant calls to 'copyExportedFields'

* Update comments

* Add support for maps

* Update Go version support to 1.19 and onward

* Re-generate after rebasing

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Co-authored-by: Michael Pu <[email protected]>