diff options
Diffstat (limited to 'spec/arel/engines/memory/integration/joins/cross_engine_spec.rb')
-rw-r--r-- | spec/arel/engines/memory/integration/joins/cross_engine_spec.rb | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/spec/arel/engines/memory/integration/joins/cross_engine_spec.rb b/spec/arel/engines/memory/integration/joins/cross_engine_spec.rb new file mode 100644 index 0000000000..bffecc9182 --- /dev/null +++ b/spec/arel/engines/memory/integration/joins/cross_engine_spec.rb @@ -0,0 +1,48 @@ +require File.join(File.dirname(__FILE__), '..', '..', '..', '..', '..', 'spec_helper') + +module Arel + describe Join do + before do + @users = Array.new([ + [1, 'bryan' ], + [2, 'emilio' ], + [3, 'nick'] + ], [:id, :name]) + @photos = Table.new(:photos) + @photos.delete + @photos \ + .insert(@photos[:id] => 1, @photos[:user_id] => 1, @photos[:camera_id] => 6) \ + .insert(@photos[:id] => 2, @photos[:user_id] => 2, @photos[:camera_id] => 42) + end + + describe 'when the in memory relation is on the left' do + it 'joins across engines' do + @users \ + .join(@photos) \ + .on(@users[:id].eq(@photos[:user_id])) \ + .project(@users[:name], @photos[:camera_id]) \ + .let do |relation| + relation.call.should == [ + Row.new(relation, ['bryan', '6']), + Row.new(relation, ['emilio', '42']) + ] + end + end + end + + describe 'when the in memory relation is on the right' do + it 'joins across engines' do + @photos \ + .join(@users) \ + .on(@users[:id].eq(@photos[:user_id])) \ + .project(@users[:name], @photos[:camera_id]) \ + .let do |relation| + relation.call.should == [ + Row.new(relation, ['bryan', '6']), + Row.new(relation, ['emilio', '42']) + ] + end + end + end + end +end |