Swap out mysql for postgresql for testing

Fixes #284

Author: robbavey

logstash-input-jdbc.gemspec

@@ -28,5 +28,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'logstash-devutils'
   s.add_development_dependency 'timecop'
   s.add_development_dependency 'jdbc-derby'
-  s.add_development_dependency 'jdbc-mysql'
+  s.add_development_dependency 'jdbc-postgres'
 end

spec/inputs/jdbc_spec.rb

@@ -2,8 +2,8 @@
 require "logstash/devutils/rspec/spec_helper"
 require "logstash/inputs/jdbc"
 require "jdbc/derby"
-require "jdbc/mysql"
-Jdbc::MySQL.load_driver
+require 'jdbc/postgres'
+Jdbc::Postgres.load_driver
 require "sequel"
 require "sequel/adapters/jdbc"
 require "timecop"
@@ -99,8 +99,8 @@
   context "when connecting to a non-existent server", :no_connection => true do
     let(:mixin_settings) do
       super.merge(
-        "jdbc_driver_class" => "com.mysql.jdbc.Driver",
-        "jdbc_connection_string" => "jdbc:mysql://localhost:99999/somedb"
+        "jdbc_driver_class" => "org.postgresql.Driver",
+        "jdbc_connection_string" => "jdbc:postgresql://localhost:65000/somedb"
       )
     end
     let(:settings) { super.merge("statement" => "SELECT 1 as col1 FROM test_table", "jdbc_user" => "foo", "jdbc_password" => "bar") }