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require_relative '../../../spec_helper'
describe :enum_with_index, shared: true do
require_relative '../fixtures/classes'
before :each do
@origin = [1, 2, 3, 4]
@enum = @origin.to_enum
end
it "passes each element and its index to block" do
a = []
@enum.send(@method) { |o, i| a << [o, i] }
a.should == [[1, 0], [2, 1], [3, 2], [4, 3]]
end
it "returns the object being enumerated when given a block" do
@enum.send(@method) { |o, i| :glark }.should equal(@origin)
end
it "binds splat arguments properly" do
acc = []
@enum.send(@method) { |*b| c,d = b; acc << c; acc << d }
[1, 0, 2, 1, 3, 2, 4, 3].should == acc
end
it "returns an enumerator if no block is supplied" do
ewi = @enum.send(@method)
ewi.should be_an_instance_of(Enumerator)
ewi.to_a.should == [[1, 0], [2, 1], [3, 2], [4, 3]]
end
end
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