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require 'spec_helper'
require 'tdiff_examples'
require 'tdiff/tdiff'
describe TDiff do
include Helpers::Trees
it_should_behave_like 'TDiff', :tdiff
it "should detect when the order of children has changed" do
changes = @tree.tdiff(@changed_order).to_a
expect(changes.length).to eq(6)
expect(changes[0][0]).to eq(' ')
expect(changes[0][1]).to eq(@tree)
expect(changes[1][0]).to eq('-')
expect(changes[1][1]).to eq(@tree.children[0])
expect(changes[2][0]).to eq(' ')
expect(changes[2][1]).to eq(@tree.children[1])
expect(changes[3][0]).to eq('+')
expect(changes[3][1]).to eq(@changed_order.children[1])
expect(changes[4][0]).to eq(' ')
expect(changes[4][1]).to eq(@tree.children[1].children[0])
expect(changes[5][0]).to eq(' ')
expect(changes[5][1]).to eq(@tree.children[1].children[1])
end
end
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