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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Enumerable#each_with_index" do
before :each do
@b = EnumerableSpecs::Numerous.new(2, 5, 3, 6, 1, 4)
end
it "passes each element and its index to block" do
@a = []
@b.each_with_index { |o, i| @a << [o, i] }
@a.should == [[2, 0], [5, 1], [3, 2], [6, 3], [1, 4], [4, 5]]
end
it "provides each element to the block" do
acc = []
obj = EnumerableSpecs::EachDefiner.new()
res = obj.each_with_index {|a,i| acc << [a,i]}
acc.should == []
obj.should == res
end
it "provides each element to the block and its index" do
acc = []
res = @b.each_with_index {|a,i| acc << [a,i]}
[[2, 0], [5, 1], [3, 2], [6, 3], [1, 4], [4, 5]].should == acc
res.should eql(@b)
end
it "binds splat arguments properly" do
acc = []
res = @b.each_with_index { |*b| c,d = b; acc << c; acc << d }
[2, 0, 5, 1, 3, 2, 6, 3, 1, 4, 4, 5].should == acc
res.should eql(@b)
end
ruby_version_is '1.8.7' do
it "returns an enumerator if no block" do
e = @b.each_with_index
e.should be_an_instance_of(enumerator_class)
e.to_a.should == [[2, 0], [5, 1], [3, 2], [6, 3], [1, 4], [4, 5]]
end
end
ruby_version_is '1.9' do
it "passes extra parameters to each" do
count = EnumerableSpecs::EachCounter.new(:apple)
e = count.each_with_index(:foo, :bar)
e.to_a.should == [[:apple, 0]]
count.arguments_passed.should == [:foo, :bar]
end
end
end
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