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JRuby is currently converting Time objects to floats when generating a random value from a range: ``` $ RBENV_VERSION=jruby-9.2.7.0 ruby -e 'puts rand(Time.now..Time.now)' 1562034267.423605 ``` MRI returns a Time object: ``` $ RBENV_VERSION=2.6.3 ruby -e 'puts rand(Time.now..Time.now)' 2019-07-01 19:27:25 -0700 ``` I believe the `RubyNumeric` check I added is the same as what MRI uses in `rb_check_to_float`: https://github.com/ruby/ruby/blob/0b858425e1e4f2de40dc0d8e5dd105a2fd93e478/object.c#L3769
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specs look good but if you look at the build the proposed fix introduced regressions: https://api.travis-ci.org/v3/job/553080882/log.txt ... the 'proper' fix likely won't involve a change a |
This looks to be the behavior that MRI expects for float-like values in ranges. MRI calls `range.end - range.begin` when generating a random value from a range: https://github.com/ruby/ruby/blob/5d9e91afe08c470485333f6c6e034d05ea3ee908/random.c#L1051 If the return value responds to `to_int` it is treated as an integer, so `CustomRangeInteger` works fine: https://github.com/ruby/ruby/blob/5d9e91afe08c470485333f6c6e034d05ea3ee908/object.c#L3243 Float-like objects that respond to `to_f` are treated differently and must be numeric: https://github.com/ruby/ruby/blob/5d9e91afe08c470485333f6c6e034d05ea3ee908/object.c#L3769
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@kares I think the fix is correct ( |
eregon
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* Support Time ranges in rand JRuby is currently converting Time objects to floats when generating a random value from a range: ``` $ RBENV_VERSION=jruby-9.2.7.0 ruby -e 'puts rand(Time.now..Time.now)' 1562034267.423605 ``` MRI returns a Time object: ``` $ RBENV_VERSION=2.6.3 ruby -e 'puts rand(Time.now..Time.now)' 2019-07-01 19:27:25 -0700 ``` I believe the `RubyNumeric` check I added is the same as what MRI uses in `rb_check_to_float`: https://github.com/ruby/ruby/blob/0b858425e1e4f2de40dc0d8e5dd105a2fd93e478/object.c#L3769 * Return float from `CustomRangeFloat#-` This looks to be the behavior that MRI expects for float-like values in ranges. MRI calls `range.end - range.begin` when generating a random value from a range: https://github.com/ruby/ruby/blob/5d9e91afe08c470485333f6c6e034d05ea3ee908/random.c#L1051 If the return value responds to `to_int` it is treated as an integer, so `CustomRangeInteger` works fine: https://github.com/ruby/ruby/blob/5d9e91afe08c470485333f6c6e034d05ea3ee908/object.c#L3243 Float-like objects that respond to `to_f` are treated differently and must be numeric: https://github.com/ruby/ruby/blob/5d9e91afe08c470485333f6c6e034d05ea3ee908/object.c#L3769
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JRuby is currently converting Time objects to floats when generating a
random value from a range:
MRI returns a Time object:
I believe the
RubyNumericcheck I added is the same as what MRI usesin
rb_check_to_float: https://github.com/ruby/ruby/blob/0b858425e1e4f2de40dc0d8e5dd105a2fd93e478/object.c#L3769