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author | Aaron Patterson <aaron.patterson@gmail.com> | 2010-11-29 14:11:28 -0800 |
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committer | Aaron Patterson <aaron.patterson@gmail.com> | 2010-11-29 14:11:28 -0800 |
commit | c86c37e5f32ca76fa7aa77e62018e368dbb37a54 (patch) | |
tree | d3e5f7abdd92b4a6349de2ce2d9ebde3723cb234 /test | |
parent | f092ae544f58255508242a5308c456d9b8a13b0c (diff) | |
download | rails-c86c37e5f32ca76fa7aa77e62018e368dbb37a54.tar.gz rails-c86c37e5f32ca76fa7aa77e62018e368dbb37a54.tar.bz2 rails-c86c37e5f32ca76fa7aa77e62018e368dbb37a54.zip |
mostly implemented depth-first traversal
Diffstat (limited to 'test')
-rw-r--r-- | test/visitors/test_depth_first.rb | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/test/visitors/test_depth_first.rb b/test/visitors/test_depth_first.rb new file mode 100644 index 0000000000..eff60576fc --- /dev/null +++ b/test/visitors/test_depth_first.rb @@ -0,0 +1,76 @@ +require 'helper' + +module Arel + module Visitors + class TestDepthFirst < MiniTest::Unit::TestCase + Collector = Struct.new(:calls) do + def call object + calls << object + end + end + + def setup + @collector = Collector.new [] + @visitor = Visitors::DepthFirst.new @collector + end + + [ + Arel::Nodes::And, + Arel::Nodes::Assignment, + Arel::Nodes::Between, + Arel::Nodes::DoesNotMatch, + Arel::Nodes::Equality, + Arel::Nodes::GreaterThan, + Arel::Nodes::GreaterThanOrEqual, + Arel::Nodes::In, + Arel::Nodes::LessThan, + Arel::Nodes::LessThanOrEqual, + Arel::Nodes::Matches, + Arel::Nodes::NotEqual, + Arel::Nodes::NotIn, + Arel::Nodes::Or, + ].each do |klass| + define_method("test_#{klass.name.gsub('::', '_')}") do + binary = klass.new(:a, :b) + @visitor.accept binary + assert_equal [:a, :b, binary], @collector.calls + end + end + + [ + Arel::Attributes::Integer, + Arel::Attributes::Float, + Arel::Attributes::String, + Arel::Attributes::Time, + Arel::Attributes::Boolean, + Arel::Attributes::Attribute + ].each do |klass| + define_method("test_#{klass.name.gsub('::', '_')}") do + binary = klass.new(:a, :b) + @visitor.accept binary + assert_equal [:a, :b, binary], @collector.calls + end + end + + def test_table + relation = Arel::Table.new(:users) + @visitor.accept relation + assert_equal ['users', relation], @collector.calls + end + + def test_array + node = Nodes::Or.new(:a, :b) + list = [node] + @visitor.accept list + assert_equal [:a, :b, node, list], @collector.calls + end + + def test_hash + node = Nodes::Or.new(:a, :b) + hash = { node => node } + @visitor.accept hash + assert_equal [:a, :b, node, :a, :b, node, hash], @collector.calls + end + end + end +end |