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describe "Enumerator\#each_slice" do
describe "when called with no block" do
describe "and .first" do
it "returns the first slice" do
[0, 1, 2, 3].each_slice(2).first.should == [0, 1]
end
end
describe "and .to_a" do
it "returns the slices in an array" do
[0, 1, 2, 3].each_slice(2).to_a.should == [[0, 1], [2, 3]]
end
end
describe "and .map{}" do
it "yields the slices and produces mapped result" do
[0, 1, 2, 3].each_slice(2).map{|a, b| [a, b]}.should == [[0, 1], [2, 3]]
end
end
end
describe "called with a block" do
describe "with n arguments" do
it "yields the slice arrays' elements" do
ary = []
[0, 1, 2, 3].each_slice(2) {|a, b| ary << [a, b]}
ary.should == [[0, 1], [2, 3]]
end
end
end
end
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