Hi.
In Ruby there''s the `DATA` constant which contains the lines following
the `__END__` keyword in the source file. For some reason RSpec
doesn''t see it.
Here''s the example:
~~~
# data_spec.rb
requre ''rspec''
describe ''DATA'' do
it ''contains lines following the __END__ keyword'' do
DATA.read.should == "Hello from underground!\n"
end
end
__END__
Hello from underground!
~~~
If then I run `$ rspec data_spec.rb`, I''m getting ''NameError:
uninitialized constant RSpec::Core::ExampleGroup::Nested_1::DATA''.
However, if I use `$ ruby data_spec.rb` all works fine.
Why RSpec doesn''t see the constant when I use the `rspec` command? How
can I solve the problem?
Thanks.
Debian GNU/Linux 5.0.7;
Ruby 1.9.2;
RSpec 2.5.0.
P. A. wrote in post #983523:> Hi. > > In Ruby there''s the `DATA` constant which contains the lines following > the `__END__` keyword in the source file. For some reason RSpec > doesn''t see it. > > Here''s the example: > > ~~~ > # data_spec.rb > > requre ''rspec'' > > describe ''DATA'' do > it ''contains lines following the __END__ keyword'' do > DATA.read.should == "Hello from underground!\n" > end > end > > __END__ > Hello from underground! > ~~~ > > If then I run `$ rspec data_spec.rb`, I''m getting ''NameError: > uninitialized constant RSpec::Core::ExampleGroup::Nested_1::DATA''. > However, if I use `$ ruby data_spec.rb` all works fine.DATA works only on the first file called by the interpreter. first.rb: require ''second'' second.rb: p DATA.read __END__ BAM! ruby first.rb ./second.rb:1: uninitialized constant DATA (NameError) from first.rb:1:in `require'' from first.rb:1 ruby second.rb "BAM!\n"> > Why RSpec doesn''t see the constant when I use the `rspec` command? How > can I solve the problem?The restriction on DATA notwithstanding, DATA in that context will by ambiguous. Think about it, is the DATA from the rspec file or the DATA from the tested file? -- Posted via http://www.ruby-forum.com/.
Thanks for the explanations, Costi G. I didn''t thought that the `DATA`
constant isn''t seen by the interpreter if it is in the required file.
The only solution that I can think of right now is the following:
~~~
# data_spec.rb
describe ''DATA'' do
it ''contains lines following the __END__ keyword'' do
data = File.read(__FILE__).split("__END__\n")[-1]
data.should == "Hello from the underground!\n"
end
end
__END__
Hello from the underground!
~~~
Costi G.:> P. A. wrote in post #983523:
> > Hi.
> >
> > In Ruby there''s the `DATA` constant which contains the lines
following
> > the `__END__` keyword in the source file. For some reason RSpec
> > doesn''t see it.
> >
> > Here''s the example:
> >
> > ~~~
> > # data_spec.rb
> >
> > requre ''rspec''
> >
> > describe ''DATA'' do
> > it ''contains lines following the __END__ keyword''
do
> > DATA.read.should == "Hello from underground!\n"
> > end
> > end
> >
> > __END__
> > Hello from underground!
> > ~~~
> >
> > If then I run `$ rspec data_spec.rb`, I''m getting
''NameError:
> > uninitialized constant
RSpec::Core::ExampleGroup::Nested_1::DATA''.
> > However, if I use `$ ruby data_spec.rb` all works fine.
>
> DATA works only on the first file called by the interpreter.
>
> first.rb:
> require ''second''
>
> second.rb:
> p DATA.read
>
> __END__
> BAM!
>
>
> ruby first.rb
> ./second.rb:1: uninitialized constant DATA (NameError)
> from first.rb:1:in `require''
> from first.rb:1
>
> ruby second.rb
> "BAM!\n"
>
>
> >
> > Why RSpec doesn''t see the constant when I use the `rspec`
command? How
> > can I solve the problem?
>
>
> The restriction on DATA notwithstanding, DATA in that context will by
> ambiguous. Think about it, is the DATA from the rspec file or the DATA
> from the tested file?
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
On 25 Feb 2011, at 00:26, Shamaoke wrote:> Thanks for the explanations, Costi G. I didn''t thought that the `DATA` > constant isn''t seen by the interpreter if it is in the required file. > > The only solution that I can think of right now is the following:Why not just File.read(DATA_FILE) and keep the data in a separate file?> > ~~~ > # data_spec.rb > > describe ''DATA'' do > it ''contains lines following the __END__ keyword'' do > data = File.read(__FILE__).split("__END__\n")[-1] > data.should == "Hello from the underground!\n" > end > end > > __END__ > Hello from the underground! > ~~~ > > Costi G.: >> P. A. wrote in post #983523: >>> Hi. >>> >>> In Ruby there''s the `DATA` constant which contains the lines following >>> the `__END__` keyword in the source file. For some reason RSpec >>> doesn''t see it. >>> >>> Here''s the example: >>> >>> ~~~ >>> # data_spec.rb >>> >>> requre ''rspec'' >>> >>> describe ''DATA'' do >>> it ''contains lines following the __END__ keyword'' do >>> DATA.read.should == "Hello from underground!\n" >>> end >>> end >>> >>> __END__ >>> Hello from underground! >>> ~~~ >>> >>> If then I run `$ rspec data_spec.rb`, I''m getting ''NameError: >>> uninitialized constant RSpec::Core::ExampleGroup::Nested_1::DATA''. >>> However, if I use `$ ruby data_spec.rb` all works fine. >> >> DATA works only on the first file called by the interpreter. >> >> first.rb: >> require ''second'' >> >> second.rb: >> p DATA.read >> >> __END__ >> BAM! >> >> >> ruby first.rb >> ./second.rb:1: uninitialized constant DATA (NameError) >> from first.rb:1:in `require'' >> from first.rb:1 >> >> ruby second.rb >> "BAM!\n" >> >> >>> >>> Why RSpec doesn''t see the constant when I use the `rspec` command? How >>> can I solve the problem? >> >> >> The restriction on DATA notwithstanding, DATA in that context will by >> ambiguous. Think about it, is the DATA from the rspec file or the DATA >> from the tested file? >> >> -- >> Posted via http://www.ruby-forum.com/. >> _______________________________________________ >> rspec-users mailing list >> rspec-users at rubyforge.org >> http://rubyforge.org/mailman/listinfo/rspec-users > _______________________________________________ > rspec-users mailing list > rspec-users at rubyforge.org > http://rubyforge.org/mailman/listinfo/rspec-userscheers, Matt matt at mattwynne.net 07974 430184