Pacer loop test

pacer_loop_test.rb

require 'bundler/setup'

require 'pacer'

graph = Pacer.tg
c1 = graph.create_vertex(name: 'Concept 1')

c2 = graph.create_vertex(name: 'Concept 2')

c2a = graph.create_vertex(name: 'Concept 2a')
graph.create_edge(nil, c2, c2a, :same_as)

c2b = graph.create_vertex(name: 'Concept 2b')
graph.create_edge(nil, c2a, c2b, :same_as)

c2c = graph.create_vertex(name: 'Concept 2c')
graph.create_edge(nil, c2b, c2c, :same_as)

c3 = graph.create_vertex(name: 'Concept 3')

# Works in irb but not "ruby"
c2.out_e(:same_as).in_v.loop { |v|
  v.out_e(:same_as).in_v
}.while do |node,depth|
  puts ('  ' * depth) + node[:name]
  :loop
end

# Doesn't work in irb or "ruby"
[c1, c2, c3].each do |cr|
  puts cr[:name]
  unless cr.out_e(:same_as).empty?
    cr.out_e(:same_as).in_v.loop { |v|
      v.out_e(:same_as).in_v
    }.while do |node,depth|
      puts ('  ' * depth) + node[:name]
      :loop
    end.to_a
  end
end

# Another way:
[c1, c2, c3].each do |cr|
# the #v method turns the vertex into a route so that the loop method is available on it.
cr.v.loop { |v|
  v.out_e(:same_as).in_v
}.while do |node,depth|
  puts ('  ' * depth) + node[:name]
  :loop
end.to_a
end