test demonstrating new features in 1.4

Rakefile

@@ -86,6 +86,11 @@ namespace :test do
     t.verbose    = true
   end
 
+  Rake::TestTask.new(:new_features) do |t|
+    t.test_files = FileList['test/auxillary/1.4_features.rb']
+    t.verbose    = true
+  end
+
   task :drop_databases do |t|
     puts "Dropping test database..."
     require File.join(File.dirname(__FILE__), 'lib', 'mongo')

test/auxillary/1.4_features.rb

@@ -0,0 +1,166 @@
+$:.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
+require 'mongo'
+require 'test/unit'
+require 'test/test_helper'
+
+# Demonstrate features in MongoDB 1.4
+class Features14Test < Test::Unit::TestCase
+
+  context "MongoDB 1.4" do
+    setup do
+      @con = Mongo::Connection.new
+      @db  = @con['mongo-ruby-test']
+      @col = @db['new-features']
+    end
+
+    teardown do
+      @col.drop
+    end
+
+    context "new query operators: " do
+
+      context "$elemMatch: " do
+        setup do
+          @col.save({:user => 'bob', :updates => [{:date => Time.now.utc, :body => 'skiing', :n => 1},
+                                                  {:date => Time.now.utc, :body => 'biking', :n => 2}]})
+
+          @col.save({:user => 'joe', :updates => [{:date => Time.now.utc, :body => 'skiing', :n => 2},
+                                                  {:date => Time.now.utc, :body => 'biking', :n => 10}]})
+        end
+
+        should "match a document with a matching object element in an array" do
+          doc = @col.find_one({"updates" => {"$elemMatch" => {"body" => "skiing", "n" => 2}}})
+          assert_equal 'joe', doc['user']
+        end
+
+        should "$elemMatch with a conditional operator" do
+          doc1 = @col.find_one({"updates" => {"$elemMatch" => {"body" => "biking", "n" => {"$gt" => 5}}}})
+          assert_equal 'joe', doc1['user']
+        end
+
+        should "note the difference between $elemMatch and a traditional match" do
+          doc = @col.find({"updates.body" => "skiing", "updates.n" => 2}).to_a
+          assert_equal 2, doc.size
+        end
+      end
+
+      context "$all with regexes" do
+        setup do
+          @col.save({:n => 1, :a => 'whale'})
+          @col.save({:n => 2, :a => 'snake'})
+        end
+
+        should "match multiple regexes" do
+          doc = @col.find({:a => {'$all' => [/ha/, /le/]}}).to_a
+          assert_equal 1, doc.size
+          assert_equal 1, doc.first['n']
+        end
+
+        should "not match if not every regex matches" do
+          doc = @col.find({:a => {'$all' => [/ha/, /sn/]}}).to_a
+          assert_equal 0, doc.size
+        end
+      end
+
+      context "the $not operator" do
+        setup do
+          @col.save({:a => ['x']})
+          @col.save({:a => ['x', 'y']})
+          @col.save({:a => ['x', 'y', 'z']})
+        end
+
+        should "negate a standard operator" do
+          results = @col.find({:a => {'$not' => {'$size' => 2}}}).to_a
+          assert_equal 2, results.size
+          results = results.map {|r| r['a']}
+          assert_equal ['x'], results.sort.first
+          assert_equal ['x', 'y', 'z'], results.sort.last
+        end
+      end
+    end
+
+    context "new update operators: " do
+
+      context "$addToSet (pushing a unique value)" do
+        setup do
+          @col.save({:username => 'bob', :interests => ['skiing', 'guitar']})
+        end
+
+        should "add an item to a set uniquely ($addToSet)" do
+          @col.update({:username => 'bob'}, {'$addToSet' => {'interests' => 'skiing'}})
+          @col.update({:username => 'bob'}, {'$addToSet' => {'interests' => 'kayaking'}})
+          document = @col.find_one({:username => 'bob'})
+          assert_equal ['guitar', 'kayaking', 'skiing'], document['interests'].sort
+        end
+
+        should "add an array of items uniquely ($addToSet with $each)" do
+          @col.update({:username => 'bob'}, {'$addToSet' => {'interests' => {'$each' => ['skiing', 'kayaking', 'biking']}}})
+          document = @col.find_one({:username => 'bob'})
+          assert_equal ['biking', 'guitar', 'kayaking', 'skiing'], document['interests'].sort
+        end
+      end
+
+      context "the positional operator ($)" do
+        setup do
+          @id1 = @col.insert({:text => 'hello',
+                             :comments => [{'by'   => 'bob',
+                                            'text' => 'lol!'},
+                                           {'by'   => 'susie',
+                                            'text' => 'bye bye!'}]})
+          @id2 = @col.insert({:text => 'goodbye',
+                            :comments => [{'by'   => 'bob',
+                                           'text' => 'au revoir'},
+                                          {'by'   => 'susie',
+                                           'text' => 'bye bye!'}]})
+        end
+
+        should "update a matching array item" do
+          @col.update({"_id" => @id1, "comments.by" => 'bob'}, {'$set' => {'comments.$.text' => 'lmao!'}}, :multi => true)
+          result = @col.find_one({"_id" => @id1})
+          assert_equal 'lmao!', result['comments'][0]['text']
+        end
+      end
+    end
+
+    context "Geoindexing" do
+      setup do
+        @places = @db['places']
+        @places.create_index([['loc', Mongo::GEO2D]])
+
+        @empire_state = ([40.748371, -73.985031])
+        @jfk = ([40.643711, -73.790009])
+
+        @places.insert({'name' => 'Empire State Building', 'loc' => ([40.748371, -73.985031])})
+        @places.insert({'name' => 'Flatiron Building', 'loc' => ([40.741581, -73.987549])})
+        @places.insert({'name' => 'Grand Central', 'loc' => ([40.751678, -73.976562])})
+        @places.insert({'name' => 'Columbia University', 'loc' => ([40.808922, -73.961617])})
+        @places.insert({'name' => 'NYSE', 'loc' => ([40.71455, -74.007124])})
+        @places.insert({'name' => 'JFK', 'loc' => ([40.643711, -73.790009])})
+      end
+
+      teardown do
+        @places.drop
+      end
+
+      should "find the nearest addresses" do
+        results = @places.find({'loc' => {'$near' => @empire_state}}).limit(2).to_a
+        assert_equal 2, results.size
+        assert_equal 'Empire State Building', results[0]['name']
+        assert_equal 'Flatiron Building', results[1]['name']
+      end
+
+      should "use geoNear command to return distances from a point" do
+        cmd = OrderedHash.new
+        cmd['geoNear'] = 'places'
+        cmd['near']    = @empire_state
+        cmd['num']     = 6
+        r = @db.command(cmd)
+
+        assert_equal 6, r['results'].length
+        r['results'].each do |result|
+          puts result.inspect
+        end
+      end
+    end
+  end
+end