Removed my patch in favor of @tenderlove's less invasive approach.

[Aaron Patterson & Jon Moss]

This is the intended behavior. You should not do more than one request
in a controller test.

use `inspect` for show `from` value

Add .gitignore to "files & purpose" list - getting started docs

If `from` is nil, in order to avoid the blank is showed.

Switch back to `Hash.dup`

Remove "Under Ruby 1.9" [ci skip]

Rails dropped Ruby 1.9 support, but this comment still true.

Follow up to #26301.

NumericalityValidator#validate_each is never called when allow_nil is true and
the value is nil because it is already skipped in EachValidator#validate.

Signed-off-by: NGuillermo Iguaran <guilleiguaran@gmail.com>

Switch back to `Hash.dup`

The performance difference between `Hash[]` and `Hash.dup` looks to have
been narrowed by @tenderlove via this commit --> https://github.com/ruby/ruby/commit/b3803cc49ad382e23291d75ce57ffb2b74bb9577#diff-eff9999082c8ce7d8ba1fc1d79f439cf.
Since this commit first appeared in Ruby 2.0.0, and since Rails now
requires a minimum Ruby version of 2.2.2, this performance boost should
be available for all users.

Relevant links:

- This behavior was originally added via https://github.com/rails/rails/commit/02174a3efc6fa8f2e5e6f114e4cf0d8a06305b6a
- The conversation on the Ruby issue tracker lives here --> https://bugs.ruby-lang.org/issues/7166

Fix typo in Delegation#delegate_missing_to doc [ci skip]

Errors#add_on_blank: Fix typo in deprecation message

This fixes a copy-and-paste-issue slipped in by #18996

Move Rails' custom assertion method `assert_nothing_raised` to its proper place.

ActiveSupport::Testing::Assertions.

We have a separate module in which have defined Rails' own custom
assertions. So it would be good to keep all custom Rails' assertions in
one place i.e. in this module.

It should not throw a NameError, but should throw a KeyError.

Fixes #26278

Update `Rails.configuration` documentation

[ci skip]

[ci skip]

This reverts commit 4973704b, reversing
changes made to 78edeb33.

Move `assert_nothing_raised` method to Rails Specific Assertions section [ci skip]

section [ci skip]

- Method `assert_nothing_raised` is Rails' own custom assertion method and
not a part of Minitest. So move it from Minitest assertions section to Rails
Specific Assertions section.

Fix "warning: assigned but unused variable - task"

Usually users extends tests classes doing something like:

    ActionView::TestCase.include MyCustomTestHelpers

This is bad because it will load the ActionView::TestCase right aways
and this will load ActionController::Base making its on_load hooks to
execute early than it should.

One way to fix this is using the on_load hooks of the components like:

    ActiveSupport.on_load(:action_view) do
      ActionView::TestCase.include MyCustomTestHelpers
    end

The problem with this approach is that the test extension will be only
load when ActionView::Base is loaded and this may happen too late in the
test.

To fix this we are adding hooks to people extend the test classes that
will be loaded exactly when the test classes are needed.

We can eliminate a conditional by calling a different instrumentation
method depending on the situation.  In this case, we'll call the special
case "!render_template" instrumentation method and eliminate the case /
when clause from the `instrument` method.

Ruby already does this freeze for us.

CacheHelper is mixed in to Helpers, Helpers is mixed in to AV::Base.
This means we can count on instances of AV::Base to have the "cache hit"
method on them, and we can stop setting an ivar for cache logging and
just ask the view if it was a cache hit.

Test that AR query cache isn't busted when types are not same object

Allow the `integration_sesion` to be set early on ActionDispatch::Integration::Runner.

This is fixed in 5.0 as an ancillary part of 574f2556
but here I also add a test for the condition.

I'd previously backported the fix (and added a test) in the below
commit; this brings the fix back up to master.

(cherry picked from commit fce3dbf3)

Rename the title of comand_line.md in index