[Rubygems-developers] Gem::Specification#copy_of and Rails makes tests startup slow

[Eric Hodel]

Bump

On 01 Dec 2004, at 22:13, Eric Hodel wrote:

> I have a small testcase in rails that has 7 tests in it (4 of them 
> raise NotImplementedError), but simply starting up the testcase takes 
> 3 seconds:
>
> $ ruby -r profile -Ilib:test test/unit/emailer_test.rb
>   %   cumulative   self              self     total
>  time   seconds   seconds    calls  ms/call  ms/call  name
>  18.37     5.57      5.57      462    12.06    19.42  Integer#gcd
>  10.26     8.68      3.11     4008     0.78     2.37  
> Gem::Specification#copy_of
>
> The tests themselves complete in less time than it takes to perform 
> all the copying:
>
> $ ruby -Ilib:test test/unit/emailer_test.rb | unit_diff
> Loaded suite test/unit/emailer_test
> Started
> ..E.EEE
> Finished in 2.526909 seconds.
> [...]
> 7 tests, 18 assertions, 0 failures, 4 errors
>
> When running the entire test suite this startup cost is minimal 
> compared to the run time of the tests, but it rarely makes sense to 
> run the entire test suite at once.  Is all the copying done in 
> #copy_of completely necessary?
>
> BTW: These were run on a PowerBook G4 1.5GHz