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Contents
require 'spec_helper'
require 'flydata-core/wrapper_forwardable'
module FlydataCore
describe WrapperSingleForwardable do
class Target
def self.foo(a, b)
target_foo_result
end
end
class Test
extend WrapperSingleForwardable
def_wrapper_single_delegator Target, :foo
def initialize(item)
@item = item
end
def ==(other)
@item == other.item
end
attr_reader :item
end
let(:subject_object) { Test }
let(:args) { [ 'arg1', 'arg2' ] }
describe '.def_wrapper_single_delegator' do
it 'defines a class method of the given name to the subject class' do
expect(subject_object.respond_to?(:foo)).to eq true
end
describe 'the method defined by it' do
subject { subject_object.foo(*args) }
before do
expect(Target).to receive(:foo).with(*args).
and_return(target_foo_result)
end
context 'when the target method returns an object' do
let(:target_foo_result) { double('single_object') }
it 'returns an object of the subject class containing the target result' do
is_expected.to eq subject_object.new(target_foo_result)
end
end
context 'when the target method returns nil' do
let(:target_foo_result) { nil }
it 'returns nil' do
is_expected.to eq nil
end
end
context 'when the target method returns an array' do
let(:target_foo_result) { [ double('object1'), double('object2') ] }
it 'returns an array of instances of the subject class. Each instance contains an object returned from the target' do
is_expected.to eq target_foo_result.collect{|item| subject_object.new(item) }
end
end
end
end
end
end
Version data entries
68 entries across 68 versions & 1 rubygems