Explicit shard selection; Rails tests (#24)

* Explicit shard selection; Rails tests

* try running ruby tests

* try without lockfile

* aha

* ok

.circleci/config.yml

@@ -25,7 +25,7 @@ jobs:
           key: cargo-lock-2-{{ checksum "Cargo.lock" }}
       - run:
           name: "Install dependencies"
-          command: "sudo apt-get update && sudo apt-get install -y psmisc postgresql-contrib-12 postgresql-client-12"
+          command: "sudo apt-get update && sudo apt-get install -y psmisc postgresql-contrib-12 postgresql-client-12 ruby ruby-dev libpq-dev"
       - run:
           name: "Build" 
           command: "cargo build"

.circleci/run_tests.sh

@@ -34,6 +34,14 @@ psql -e -h 127.0.0.1 -p 6432 -f tests/sharding/query_routing_test_select.sql > /
 # Replica/primary selection & more sharding tests
 psql -e -h 127.0.0.1 -p 6432 -f tests/sharding/query_routing_test_primary_replica.sql > /dev/null
 
+#
+# ActiveRecord tests!
+#
+cd tests/ruby
+sudo gem install bundler
+bundle install
+ruby tests.rb
+
 # Attempt clean shut down
 killall pgcat -s SIGINT