[rspec-users] Why can not a BigDecimal be compared to a Float via "==". How should I handle this???

Greg Hauptmann greg.hauptmann.ruby at gmail.com
Sun Jan 11 05:05:36 EST 2009


I've gone with the following     ai.amount.should == BigDecimal('-323.03')

However I'm still a bit surprised that Ruby itself does allow a good "=="
test between a Float and a BigDecimal.  Perhaps there's a reason that I'm
missing?


On Sun, Jan 11, 2009 at 7:23 PM, Mark Wilden <mark at mwilden.com> wrote:

> On Sun, Jan 11, 2009 at 12:17 AM, Greg Hauptmann <
> greg.hauptmann.ruby at gmail.com> wrote:
>
>>
>> Any suggestions on how to write an rspec expectation for equality when you
>> get a BigDecimal back.  I see that "big_decimal_variable.should == 123.23"
>> doesn't work as the ruby BigDecimal comparison (via ==) to the same Float
>> value gives false (not true as you'd expect).
>>
>
> How about bd.to_s.should == 123.23.to_s ?
>
> ///ark
>
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