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ruby--ruby/spec/ruby/optional/capi/enumerator_spec.rb

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require File.expand_path('../spec_helper', __FILE__)
load_extension("enumerator")
describe "C-API Enumerator function" do
before :each do
@s = CApiEnumeratorSpecs.new
end
describe "rb_enumeratorize" do
before do
@enumerable = [1, 2, 3]
end
it "constructs a new Enumerator for the given object, method and arguments" do
enumerator = @s.rb_enumeratorize(@enumerable, :each, :arg1, :arg2)
enumerator.class.should == Enumerator
end
it "enumerates the given object" do
enumerator = @s.rb_enumeratorize(@enumerable, :each)
enumerated = []
enumerator.each { |i| enumerated << i }
enumerated.should == @enumerable
end
it "uses the given method for enumeration" do
enumerator = @s.rb_enumeratorize(@enumerable, :awesome_each)
@enumerable.should_receive(:awesome_each)
enumerator.each {}
end
it "passes the given arguments to the enumeration method" do
enumerator = @s.rb_enumeratorize(@enumerable, :each, :arg1, :arg2)
@enumerable.should_receive(:each).with(:arg1, :arg2)
enumerator.each {}
end
end
end