So this is both a specific and a general question
Specific question:
I am trying to find where be_success is defined. In Ubuntu, I used
DoubleCmd (a clone of Window's wonderful Total Commander) to scan for
be_success without, uh, success. That's the specific question.
I can see the following
[73, 82] in /home/real-estate-data-mining/spec/controllers/
articles_controller_spec.rb
73: # get :new # , params: {}, session: valid_session
74: byebug
75: get :new, params: {}, session: valid_session
76: # get :new, params: {}, session: {valid_session}
77: byebug
=> 78: expect(response).to be_success
79: end
80: end
81: end
82:
(byebug) response.status
302
(byebug) be_success.class
RSpec::Matchers::BuiltIn::BePredicate
(byebug)
In
/home/real-estate-data-mining/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/rspec-expectations-3.6.0/lib/rspec/matchers/built_in.rb:178
I see
[240, 249] in /home/real-estate-data-mining/.rbenv/versions/2.4.1/lib/ruby/
gems/2.4.0/gems/rspec-expectations-3.6.0/lib/rspec/matchers/built_in/be.rb
240: method_name = actual.respond_to?(predicate) ? predicate :
present_tense_predicate
241: @predicate_matches = actual.__send__(method_name, *@args,
&@block)
242: end
243:
244: def predicate
=> 245: :"#{@expected}?"
246: end
247:
248: def present_tense_predicate
249: :"#{@expected}s?"
(byebug) @expected.class
String
(byebug) @expected
"success"
So to partially answer my own question, one can find where successful? is
defined here:
[109, 118] in /home/real-estate-data-mining/.rbenv/versions/2.4.1/lib/ruby/
gems/2.4.0/gems/rack-2.0.3/lib/rack/response.rb
109:
110: module Helpers
111: def invalid?; status < 100 || status >= 600;
end
112:
113: def informational?; status >= 100 && status < 200;
end
=> 114: def successful?; status >= 200 && status < 300;
end
115: def redirection?; status >= 300 && status < 400;
end
116: def client_error?; status >= 400 && status < 500;
end
117: def server_error?; status >= 500 && status < 600;
end
I'm pretty sure there is a metaprogramming technique for finding where/when
an object (in Ruby, a class IS an example of an Object) is created.
So, ... How, in Ruby/Rails/Rspec, would one track where be_success comes
into existence?
Bonus question:
Since a Class is an Object, why does
Class.class
return Class ?
Similarly, why does BasicObject.class return Class ?
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