Bug #14772: Revision 63453 triggers 3 Active Support test failures

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.6.0dev (2018-05-17 trunk 63453) [x86_64-linux]
• Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN

[yahonda (Yasuo Honda)]

Steps to reproduce:

git clone https://github.com/rails/rails.git
cd rails/activesupport
sudo gem install bundler
bundle install
bundle exec ruby -w -Itest test/core_ext/range_ext_test.rb -n /test_should_compare/

Expected results:

It should pass as revision 63452 passes these tests:

$ ruby -v
ruby 2.6.0dev (2018-05-17 trunk 63452) [x86_64-linux]
$ bundle exec ruby -w -Itest test/core_ext/range_ext_test.rb -n /test_should_compare/
Run options: -n /test_should_compare/ --seed 53093

# Running:

...

Finished in 0.001067s, 2811.8560 runs/s, 2811.8560 assertions/s.
3 runs, 3 assertions, 0 failures, 0 errors, 0 skips
$

Actual results:

$ ruby -v
ruby 2.6.0dev (2018-05-17 trunk 63453) [x86_64-linux]
$ bundle exec ruby -w -Itest test/core_ext/range_ext_test.rb -n /test_should_compare/
Run options: -n /test_should_compare/ --seed 13526

# Running:

F

Failure:
RangeTest#test_should_compare_other_with_exclusive_end [test/core_ext/range_ext_test.rb:72]:
Expected false to be truthy.


bin/rails test test/core_ext/range_ext_test.rb:71

F

Failure:
RangeTest#test_should_compare_identical_exclusive [test/core_ext/range_ext_test.rb:68]:
Expected false to be truthy.


bin/rails test test/core_ext/range_ext_test.rb:67

F

Failure:
RangeTest#test_should_compare_identical_inclusive [test/core_ext/range_ext_test.rb:64]:
Expected false to be truthy.


bin/rails test test/core_ext/range_ext_test.rb:63



Finished in 0.002352s, 1275.4549 runs/s, 1275.4549 assertions/s.
3 runs, 3 assertions, 3 failures, 0 errors, 0 skips
$

Here are code snippets of failed tests:

 63   def test_should_compare_identical_inclusive
 64     assert((1..10) === (1..10))
 65   end
 66
 67   def test_should_compare_identical_exclusive
 68     assert((1...10) === (1...10))
 69   end
 70
 71   def test_should_compare_other_with_exclusive_end
 72     assert((1..10) === (1...10))
 73   end

[nobu (Nobuyoshi Nakada)]

How does Active Support extend Range?

[yahonda (Yasuo Honda)]

ActiveSupports's Range#include? is defined as follows:

https://github.com/rails/rails/blob/870766017ab20541a1e3b10bf026d82522028028/activesupport/lib/active_support/core_ext/range/include_range.rb#L13-L21

    def include?(value)
      if value.is_a?(::Range)
        # 1...10 includes 1..9 but it does not include 1..10.
        operator = exclude_end? && !value.exclude_end? ? :< : :<=
        super(value.first) && value.last.send(operator, last)
      else
        super
      end

Other ActiveSupport Range can be found from https://github.com/rails/rails/tree/master/activesupport/lib/active_support/core_ext/range

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Feedback

It seems cover? semantics, rather than include?'s one.
Isn't it possible to define cover? too, or make the alias, in Active Support?

[yahonda (Yasuo Honda)]

Hi,

Based on the feedback and commit message, I have created alias_method :range?, :include? just below the include?(value) method but did not help.

https://github.com/yahonda/rails/commit/fb6344a524440fdb37c7d1dfe1d149c9976b7fd9

Let me open an issue at https://github.com/rails/rails/ to get more wider information from other Rails developers.

Thank you.

[yahonda (Yasuo Honda)]

https://github.com/rails/rails/issues/32945 has been opened.

[yahonda (Yasuo Honda)]

• Status changed from Feedback to Closed

Closing since https://github.com/rails/rails/pull/32938/commits/0fcb921a65e615c301450d7820b03473acd53898 addressed these 3 failures by changing Active Support.

Thanks for the help.