Ruby-Graphviz
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uninitialized constant GraphVizTest::Open3
Doing
pushd /tmp
git clone https://github.com/glejeune/Ruby-Graphviz.git
pushd Ruby-Graphviz
chruby ruby-2.2.2
bundle install --path vendor
bundle exec rake
results in errors such as
Failure:
got exception on sample74.rb: uninitialized constant GraphVizTest::Open3.
<false> is not true.
test_sample74(GraphVizTest)