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Contents
require "spec_helper"
describe Mongoid::Collections::CyclicIterator do
before do
@first = stub
@second = stub
@third = stub
@fourth = stub
end
let(:array) do
[ @first, @second, @third, @fourth ]
end
describe "#initialize" do
let(:iterator) do
Mongoid::Collections::CyclicIterator.new(array)
end
it "defaults the counter to -1" do
iterator.counter.should == -1
end
end
describe "#next" do
context "when the iterator has just been created" do
let(:iterator) do
Mongoid::Collections::CyclicIterator.new(array)
end
it "returns the first element" do
iterator.next.should == @first
end
end
context "when the iterator is in the middle" do
let(:iterator) do
Mongoid::Collections::CyclicIterator.new(array)
end
before do
2.times { iterator.next }
end
it "returns the next element given the index" do
iterator.next.should == @third
end
end
context "when the iterator is on the last element" do
let(:iterator) do
Mongoid::Collections::CyclicIterator.new(array)
end
before do
4.times { iterator.next }
end
it "returns the first element" do
iterator.next.should == @first
end
it "resets the counter" do
iterator.next
iterator.counter.should == 0
end
end
end
end
Version data entries
19 entries across 19 versions & 3 rubygems