skip db:mysql and db:postgres db (re-)creation for faster test starts

.travis.yml

@@ -5,7 +5,12 @@ script: bundle exec rake test_$DB
 before_script:
   - export JRUBY_OPTS="--server $JRUBY_OPTS" # -Xcompile.invokedynamic=false
   - mvn prepare-package # compiles ext generates: lib/arjdbc/jdbc/adapter_java.jar
-  - mysql --version # to see if we're using MySQL or MariaDB
+  - mysql --version || true # to see if we're using MySQL or MariaDB
+  - '[ "$DB" == "postgresql" ] && jruby -rbundler/setup -S rake db:postgresql || true'
+  - '[ "$DB" == "mysql" ] && jruby -rbundler/setup -S rake db:mysql || true'
+  - '[ "$DB" == "mariadb" ] && jruby -rbundler/setup -S rake db:mysql || true'
+  - '[ "$DB" == "jdbc" ] && jruby -rbundler/setup -S rake db:mysql || true'
+  - '[ "$DB" == "jndi" ] && jruby -rbundler/setup -S rake db:mysql || true'
 before_install:
   - ((jruby -v | grep 1.8.7) && jruby --1.9 -S gem update --system 2.1.11) || true
 rvm:

rakelib/02-test.rake

@@ -75,8 +75,8 @@ test_task_for :Derby, :desc => 'Run tests against (embedded) DerbyDB'
 test_task_for :H2, :desc => 'Run tests against H2 database engine'
 test_task_for :HSQLDB, :desc => 'Run tests against HyperSQL (Java) database'
 test_task_for :MSSQL, :driver => :jtds, :database_name => 'MS-SQL (SQLServer)'
-test_task_for :MySQL, :prereqs => 'db:mysql'
-test_task_for :PostgreSQL, :driver => 'postgres', :prereqs => 'db:postgresql'
+test_task_for :MySQL #, :prereqs => 'db:mysql'
+test_task_for :PostgreSQL, :driver => 'postgres' #, :prereqs => 'db:postgresql'
 task :test_postgres => :test_postgresql # alias
 test_task_for :SQLite3, :driver => ENV['JDBC_SQLITE_VERSION']
 task :test_sqlite => :test_sqlite3 # alias