couchrest_model/spec/couchrest/more/casted_extended_doc_spec.rb

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require File.join(File.dirname(__FILE__), '..', '..', 'spec_helper')
require File.join(FIXTURE_PATH, 'more', 'card')
class Car < CouchRest::ExtendedDocument
use_database TEST_SERVER.default_database
property :name
property :driver, :cast_as => 'Driver'
end
class Driver < CouchRest::ExtendedDocument
use_database TEST_SERVER.default_database
# You have to add a casted_by accessor if you want to reach a casted extended doc parent
attr_accessor :casted_by
property :name
end
describe "casting an extended document" do
before(:each) do
@driver = Driver.new(:name => 'Matt')
@car = Car.new(:name => 'Renault 306', :driver => @driver)
end
it "should retain all properties of the casted attribute" do
@car.driver.should == @driver
end
it "should let the casted document know who casted it" do
@car.driver.casted_by.should == @car
end
end
describe "assigning a value to casted attribute after initializing an object" do
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before(:each) do
@car = Car.new(:name => 'Renault 306')
@driver = Driver.new(:name => 'Matt')
end
it "should not create an empty casted object" do
@car.driver.should be_nil
end
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# Note that this isn't casting the attribute, it's just assigning it a value
# (see "should not cast attribute")
it "should let you assign the value" do
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@car.driver = @driver
@car.driver.name.should == 'Matt'
end
it "should not cast attribute" do
@car.driver = JSON.parse(JSON.generate(@driver))
@car.driver.should_not be_instance_of(Driver)
end
end
describe "casting an extended document from parsed JSON" do
before(:each) do
@driver = Driver.new(:name => 'Matt')
@car = Car.new(:name => 'Renault 306', :driver => @driver)
@new_car = Car.new(JSON.parse(JSON.generate(@car)))
end
it "should cast casted attribute" do
@new_car.driver.should be_instance_of(Driver)
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end
it "should retain all properties of the casted attribute" do
@new_car.driver.should == @driver
end
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end