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require 'spec_helper'
require 'helpers/trees'
shared_examples_for 'TDiff' do |method|
include Helpers::Trees
it "should tell if two trees are identical" do
expect(@tree.send(method,@tree).all? { |change,node|
change == ' '
}).to eq(true)
end
it "should stop if the root nodes have changed" do
changes = @tree.send(method,@different_root).to_a
expect(changes.length).to eq(2)
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(@different_root)
end
it "should tell when sub-nodes are added" do
changes = @tree.send(method,@added).select { |change,node| change == '+' }
expect(changes.length).to eq(1)
expect(changes[0][0]).to eq('+')
expect(changes[0][1]).to eq(@added.children[0].children[1])
end
it "should tell when sub-nodes are removed" do
changes = @tree.send(method,@removed).select { |change,node| change == '-' }
expect(changes.length).to eq(1)
expect(changes[0][0]).to eq('-')
expect(changes[0][1]).to eq(@tree.children[0].children[1])
end
end
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