couchrest_model/spec/couchrest/assocations_spec.rb

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# encoding: utf-8
require File.expand_path('../../spec_helper', __FILE__)
require File.join(FIXTURE_PATH, 'more', 'sale_invoice')
describe "Assocations" do
describe "of type belongs to" do
before :each do
@invoice = SaleInvoice.create(:price => 2000)
@client = Client.create(:name => "Sam Lown")
end
it "should create a foreign key property with setter and getter" do
@invoice.properties.find{|p| p.name == 'client_id'}.should_not be_nil
@invoice.respond_to?(:client_id).should be_true
@invoice.respond_to?("client_id=").should be_true
end
it "should set the property and provide object when set" do
@invoice.client = @client
@invoice.client_id.should eql(@client.id)
@invoice.client.should eql(@client)
end
it "should set the attribute, save and return" do
@invoice.client = @client
@invoice.save
@invoice = SaleInvoice.get(@invoice.id)
@invoice.client.id.should eql(@client.id)
end
it "should remove the association if nil is provided" do
@invoice.client = @client
@invoice.client = nil
@invoice.client_id.should be_nil
end
it "should not try to search for association if foreign_key is nil" do
@invoice.client_id = nil
Client.should_not_receive(:get)
@invoice.client
end
it "should raise error if class name does not exist" do
lambda do
class TestBadAssoc < CouchRest::Model::Base
belongs_to :test_bad_item
end
end.should raise_error(NameError, /TestBadAssoc#test_bad_item/)
end
it "should allow override of foreign key" do
@invoice.respond_to?(:alternate_client).should be_true
@invoice.respond_to?("alternate_client=").should be_true
@invoice.properties.find{|p| p.name == 'alt_client_id'}.should_not be_nil
end
it "should allow override of foreign key and save" do
@invoice.alternate_client = @client
@invoice.save
@invoice = SaleInvoice.get(@invoice.id)
@invoice.alternate_client.id.should eql(@client.id)
end
end
describe "of type collection_of" do
before(:each) do
@invoice = SaleInvoice.create(:price => 2000)
@entries = [
SaleEntry.create(:description => 'test line 1', :price => 500),
SaleEntry.create(:description => 'test line 2', :price => 500),
SaleEntry.create(:description => 'test line 3', :price => 1000)
]
end
it "should create an associated property and collection proxy" do
@invoice.respond_to?('entry_ids')
@invoice.respond_to?('entry_ids=')
@invoice.entries.class.should eql(::CouchRest::CollectionOfProxy)
end
it "should allow replacement of objects" do
@invoice.entries = @entries
@invoice.entries.length.should eql(3)
@invoice.entry_ids.length.should eql(3)
@invoice.entries.first.should eql(@entries.first)
@invoice.entry_ids.first.should eql(@entries.first.id)
end
it "should allow ids to be set directly and load entries" do
@invoice.entry_ids = @entries.collect{|i| i.id}
@invoice.entries.length.should eql(3)
@invoice.entries.first.should eql(@entries.first)
end
it "should replace collection if ids replaced" do
@invoice.entry_ids = @entries.collect{|i| i.id}
@invoice.entries.length.should eql(3) # load once
@invoice.entry_ids = @entries[0..1].collect{|i| i.id}
@invoice.entries.length.should eql(2)
end
it "should allow forced collection update if ids changed" do
@invoice.entry_ids = @entries[0..1].collect{|i| i.id}
@invoice.entries.length.should eql(2) # load once
@invoice.entry_ids << @entries[2].id
@invoice.entry_ids.length.should eql(3)
@invoice.entries.length.should eql(2) # cached!
@invoice.entries(true).length.should eql(3)
end
it "should empty arrays when nil collection provided" do
@invoice.entries = @entries
@invoice.entries = nil
@invoice.entry_ids.should be_empty
@invoice.entries.should be_empty
end
it "should empty arrays when nil ids array provided" do
@invoice.entries = @entries
@invoice.entry_ids = nil
@invoice.entry_ids.should be_empty
@invoice.entries.should be_empty
end
it "should ignore nil entries" do
@invoice.entries = [ nil ]
@invoice.entry_ids.should be_empty
@invoice.entries.should be_empty
end
describe "proxy" do
it "should ensure new entries to proxy are matched" do
@invoice.entries << @entries.first
@invoice.entry_ids.first.should eql(@entries.first.id)
@invoice.entries.first.should eql(@entries.first)
@invoice.entries << @entries[1]
@invoice.entries.count.should eql(2)
@invoice.entry_ids.count.should eql(2)
@invoice.entry_ids.last.should eql(@entries[1].id)
@invoice.entries.last.should eql(@entries[1])
end
it "should support push method" do
@invoice.entries.push(@entries.first)
@invoice.entry_ids.first.should eql(@entries.first.id)
end
it "should support []= method" do
@invoice.entries[0] = @entries.first
@invoice.entry_ids.first.should eql(@entries.first.id)
end
it "should support unshift method" do
@invoice.entries.unshift(@entries.first)
@invoice.entry_ids.first.should eql(@entries.first.id)
@invoice.entries.unshift(@entries[1])
@invoice.entry_ids.first.should eql(@entries[1].id)
end
it "should support pop method" do
@invoice.entries.push(@entries.first)
@invoice.entries.pop.should eql(@entries.first)
@invoice.entries.empty?.should be_true
@invoice.entry_ids.empty?.should be_true
end
it "should support shift method" do
@invoice.entries.push(@entries[0])
@invoice.entries.push(@entries[1])
@invoice.entries.shift.should eql(@entries[0])
@invoice.entries.first.should eql(@entries[1])
@invoice.entry_ids.first.should eql(@entries[1].id)
end
it "should raise error when adding un-persisted entries" do
SaleEntry.find_by_description('test entry').should be_nil
entry = SaleEntry.new(:description => 'test entry', :price => 500)
lambda {
@invoice.entries << entry
}.should raise_error
# In the future maybe?
# @invoice.save.should be_true
# SaleEntry.find_by_description('test entry').should_not be_nil
end
end
end
end