require File.dirname(__FILE__) + '/../../spec_helper'

describe Radiant::ExtensionMigrator do
  
  class Person < ActiveRecord::Base; end
  class Place < ActiveRecord::Base; end

  before :each do
    ActiveRecord::Base.connection.delete("DELETE FROM schema_migrations WHERE version LIKE 'Basic-%' OR version LIKE 'Upgrading-%' OR version LIKE 'Replacing-%'")
    ActiveRecord::Base.connection.delete("DELETE FROM extension_meta WHERE name = 'Upgrading'")
  end
  
  it 'should migrate new style migrations successfully' do
    ActiveRecord::Migration.suppress_messages do
      BasicExtension.migrator.migrate
    end
    BasicExtension.migrator.get_all_versions.should == [200812131420,200812131421]
    lambda { Person.find(:all) }.should_not raise_error
    lambda { Place.find(:all) }.should_not raise_error
    ActiveRecord::Migration.suppress_messages do
      BasicExtension.migrator.migrate(0)
    end
    BasicExtension.migrator.get_all_versions.should == []
  end
  
  it 'should migrate extensions with unusual names' do
    ActiveRecord::Migration.suppress_messages do
      SpecialCharactersExtension.migrator.migrate
    end
    SpecialCharactersExtension.migrator.get_all_versions.should == [1]
    lambda { Person.find(:all) }.should_not raise_error
    ActiveRecord::Migration.suppress_messages do
      SpecialCharactersExtension.migrator.migrate(0)
    end
    SpecialCharactersExtension.migrator.get_all_versions.should == []
  end

  it "should record existing extension migrations in the schema_migrations table" do
    ActiveRecord::Base.connection.insert("INSERT INTO extension_meta (name, schema_version) VALUES ('Upgrading', 2)")
    ActiveRecord::Migration.suppress_messages do
      UpgradingExtension.migrator.migrate(3)
    end
    UpgradingExtension.migrator.get_all_versions.should == [1,2,3]
    ActiveRecord::Base.connection.select_values("SELECT * FROM extension_meta WHERE name = 'Upgrading'").should be_empty
  end

  it "should obey migrate_from instructions" do
    ActiveRecord::Migration.suppress_messages do
      BasicExtension.migrator.migrate
      lambda{ ReplacingExtension.migrator.migrate }.should_not raise_error
    end
    ReplacingExtension.migrator.get_all_versions.should == [200812131420,201106021232]
  end

  describe '#migrate_extensions' do
    it 'should migrate in the order of the specified extension load order' do
      BasicExtension.migrator.should_receive(:migrate).once
      UpgradingExtension.migrator.should_receive(:migrate).once
      Rails.configuration.stub!(:enabled_extensions).and_return([:basic, :upgrading])
      Radiant::ExtensionMigrator.migrate_extensions
    end
  end
end