added Config::Db to store db configuration

dbconfig.yml

@@ -0,0 +1,6 @@
+host: localhost
+user: username
+password: secret
+driver: pg
+database: test
+

lib/postpolicy/config.rb

@@ -26,6 +26,21 @@ def self.load( config_hash )
       accesses.each_pair do |action, acl|
         AccessManager << Access.new( acls[acl], actions[action] )
       end
+      Db.load( config_hash["database"] )
+    end
+
+    class Db
+      class << self
+        attr_reader :dbconfig, :dbi_params
+
+        def load( filename )
+          if filename 
+            @dbconfig = YAML.load_file( filename ).stringify_keys!.freeze
+            @dbi_params = ["DBI:#{@dbconfig[:driver]}:#{@dbconfig[:database]}", @dbconfig[:user], @dbconfig[:password]]
+          end
+        end
+
+      end
     end
 
     protected

postpolicy.yml

@@ -1,11 +1,14 @@
 acl: 
   foo: 
     sender: [email protected]
+  bar:
+    sender: file:///home/michal/test/filetest
+    recipient: sql://"SELECT * FROM users WHERE login = '%l'"
 
 action: 
   pass: REJECT
 
 access:
   pass: foo 
 
-    
+database: "dbconfig.yml"

test/config_spec.rb

@@ -0,0 +1,25 @@
+require 'test_helper'
+
+describe PostPolicy::Config::Db do
+
+  it "should load config from file and build dbi_params" do
+    filename = '/tmp/dbconfig' 
+    config = {  :host => 'localhost',
+                :database => 'postpolicy',
+                :user => 'foo',
+                :password => 'secret',
+                :driver => 'pg' }
+
+    File.open( filename, 'w' ) do |f|
+      f.puts config.to_yaml 
+    end
+
+    PostPolicy::Config::Db.load( filename )
+    PostPolicy::Config::Db.dbconfig.should == config
+    dbi_params = ["DBI:#{config[:driver]}:#{config[:database]}", config[:user], config[:password]]
+    PostPolicy::Config::Db.dbi_params.should == dbi_params
+
+    FileUtils.rm( filename )
+  end
+
+end

test/datasource_spec.rb

@@ -26,16 +26,18 @@
 describe PostPolicy::DataSource::File do
 
   it "should read from file" do
-    File.open( '/tmp/file_datasource', 'w' ) do |f| 
+    filename = '/tmp/file_datasource'
+    File.open( filename, 'w' ) do |f| 
       GOOD_VALUES.each { |value| f.puts value }
     end
-    ds = PostPolicy::DataSource::File.new( '/tmp/file_datasource' )
+    ds = PostPolicy::DataSource::File.new( filename )
     GOOD_VALUES.each do |value|
       ds.exists?( value ).should == true
     end
     BAD_VALUES.each do |value|
       ds.exists?( value ).should == false
     end
+    FileUtils.rm( filename ) 
   end
 
 end