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require 'spec_helper'
describe PuppetForge::LazyRelations do
class PuppetForge::V3::Parent < PuppetForge::V3::Base
lazy :relation, 'Thing'
lazy :chained, 'Parent'
lazy_collection :relations, 'Thing'
lazy_collection :parents, 'Parent'
def uri
"/parents/#{slug}"
end
def slug
"1"
end
end
class PuppetForge::V3::Thing < PuppetForge::V3::Base
# Needed for #inspect
def uri
"/things/1"
end
# Needed for fetch
def slug
"1"
end
def standalone_method
"a/b/c"
end
def satisified_dependent_method
"-#{local}-"
end
def unsatisfied_dependent_method
"-#{remote}-"
end
def shadow
"-#{super}-"
end
def remote_shadow
"-#{super}-"
end
end
let(:base_class) { PuppetForge::V3::Base }
let(:klass) do |*args|
PuppetForge::V3::Parent
end
let(:related_class) do
PuppetForge::V3::Thing
end
let(:local_data) { { :id => 1, :local => 'data', :shadow => 'x' } }
let(:remote_data) { local_data.merge(:remote => 'DATA', :remote_shadow => 'X') }
describe '.lazy' do
subject { klass.new(:relation => local_data).relation }
it do
should be_a(related_class)
end
it 'does not call methods to #inspect' do
expect(subject).not_to receive(:shadow)
subject.inspect
end
describe 'local attributes' do
before { expect(related_class).not_to receive(:request) }
example 'allow access to local attributes' do
expect(subject.local).to eql('data')
end
example 'provide local attributes predicates' do
expect(subject.local?).to be true
end
example 'provide local attributes setters' do
subject.local = 'foo'
expect(subject.local).to eql('foo')
end
example 'allow access to local standalone methods' do
expect(subject.standalone_method).to eql('a/b/c')
end
example 'allow access to locally satisfiable methods' do
expect(subject.satisified_dependent_method).to eql('-data-')
end
example 'allow `super` access to shadowed attributes' do
expect(subject.shadow).to eql('-x-')
end
end
describe 'remote attributes' do
before do
stub_api_for(base_class) do |stubs|
stubs.get('/v3/things/1') do
[ 200, { 'Content-Type' => 'json' }, remote_data ]
end
end
end
example 'allow access to remote attributes' do
expect(subject.remote).to eql('DATA')
end
example 'provide remote attributes predicates' do
expect(subject.remote?).to be true
end
example 'provide remote attributes setters' do
subject.remote = 'foo'
expect(subject.remote).to eql('foo')
end
example 'allow multiple instances to access remote attributes' do
expect(related_class).to receive(:request) \
.exactly(9).times \
.and_call_original
9.times do
subject = klass.new(:relation => local_data).relation
expect(subject.remote).to eql('DATA')
end
end
example 'allow access to locally unsatisfiable methods' do
expect(subject.unsatisfied_dependent_method).to eql('-DATA-')
end
example 'allow `super` access to shadowed remote attributes' do
expect(subject.remote_shadow).to eql('-X-')
end
end
describe 'remote relations' do
before do
stub_api_for(base_class) do |api|
api.get('/v3/parents/1') do
data = { :id => 1, :relation => local_data }
[ 200, { 'Content-Type' => 'json' }, data ]
end
api.get('/v3/things/1') do
[ 200, { 'Content-Type' => 'json' }, remote_data ]
end
end
end
subject { klass.new(:chained => { :id => 1 }) }
example 'allow chained lookups of lazy relations' do
expect(subject.chained.relation.remote).to eql('DATA')
end
end
describe 'null relations' do
subject { klass.new(:relation => nil) }
example 'do not return new instances' do
expect(subject.relation).to be nil
end
end
describe 'unsatisfiable attributes' do
before do
stub_api_for(base_class) do |api|
api.get('/v3/parents/1') do
[ 200, { 'Content-Type' => 'json' }, remote_data ]
end
end
end
subject { klass.new(local_data) }
example 'raise an exception when accessing an unknown attribute' do
expect { subject.unknown_attribute }.to raise_error(NoMethodError)
end
end
end
describe '.lazy_collection' do
subject { klass.new(:relations => [local_data]).relations.first }
it { should be_a(related_class) }
it 'does not call methods to #inspect' do
expect(subject).not_to receive(:shadow)
subject.inspect
end
describe 'local attributes' do
before { expect(related_class).not_to receive(:request) }
example 'allow access to local attributes' do
expect(subject.local).to eql('data')
end
example 'provide local attributes predicates' do
expect(subject.local?).to be true
end
example 'provide local attributes setters' do
subject.local = 'foo'
expect(subject.local).to eql('foo')
end
example 'allow access to local standalone methods' do
expect(subject.standalone_method).to eql('a/b/c')
end
example 'allow access to locally satisfiable methods' do
expect(subject.satisified_dependent_method).to eql('-data-')
end
example 'allow `super` access to shadowed attributes' do
expect(subject.shadow).to eql('-x-')
end
end
describe 'remote attributes' do
before do
stub_api_for(base_class) do |api|
api.get('/v3/things/1') do
[ 200, { 'Content-Type' => 'json' }, remote_data ]
end
end
end
example 'allow access to remote attributes' do
expect(subject.remote).to eql('DATA')
end
example 'provide remote attributes predicates' do
expect(subject.remote?).to be true
end
example 'provide remote attributes setters' do
subject.remote = 'foo'
expect(subject.remote).to eql('foo')
end
example 'allow multiple instances to access remote attributes' do
expect(related_class).to receive(:request) \
.exactly(9).times \
.and_call_original
9.times do
subject = klass.new(:relations => [local_data]).relations.first
expect(subject.remote).to eql('DATA')
end
end
example 'allow access to locally unsatisfiable methods' do
expect(subject.unsatisfied_dependent_method).to eql('-DATA-')
end
example 'allow `super` access to shadowed remote attributes' do
expect(subject.remote_shadow).to eql('-X-')
end
end
describe 'remote relations' do
before do
stub_api_for(base_class) do |api|
api.get('/v3/parents/1') do
data = { :id => 1, :parents => [{ :id => 1, :relation => local_data }] }
[ 200, { 'Content-Type' => 'json' }, data ]
end
api.get('/v3/things/1') do
[ 200, { 'Content-Type' => 'json' }, remote_data ]
end
end
end
subject { klass.new(:id => 1) }
example 'allow chained lookups of lazy relations' do
expect(subject.parents[0].relation.remote).to eql('DATA')
end
end
describe 'null relations' do
subject { klass.new(:relations => nil) }
example 'return an empty list' do
expect(subject.relations).to be_empty
end
end
describe 'unsatisfiable attributes' do
before do
stub_api_for(base_class) do |api|
api.get('/v3/parents/1') do
[ 200, { 'Content-Type' => 'json' }, remote_data ]
end
end
end
subject { klass.new(local_data) }
example 'raise an exception when accessing an unknown attribute' do
expect { subject.unknown_attribute }.to raise_error(NoMethodError)
end
end
end
end
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