334 lines
7.2 KiB
Ruby
334 lines
7.2 KiB
Ruby
require 'test_helper'
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require 'hanami/utils/callbacks'
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Hanami::Utils::Callbacks::Chain.class_eval do
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def size
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@chain.size
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end
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def first
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@chain.first
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end
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def last
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@chain.last
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end
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def each(&blk)
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@chain.each(&blk)
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end
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end
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class Callable
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def call
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end
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end
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class Action
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attr_reader :logger
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def initialize
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@logger = Array.new
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end
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private
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def authenticate!
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logger.push 'authenticate!'
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end
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def set_article(params)
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logger.push "set_article: #{ params[:id] }"
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end
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end
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describe Hanami::Utils::Callbacks::Chain do
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before do
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@chain = Hanami::Utils::Callbacks::Chain.new
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end
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describe '#append' do
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it 'wraps the given callback with a callable object' do
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@chain.append :symbolize!
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cb = @chain.last
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cb.must_respond_to(:call)
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end
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it 'appends the callbacks at the end of the chain' do
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@chain.append(:foo)
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@chain.append(:bar)
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@chain.first.callback.must_equal(:foo)
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@chain.last.callback.must_equal(:bar)
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end
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describe 'when a callable object is passed' do
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before do
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@chain.append callback
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end
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let(:callback) { Callable.new }
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it 'includes the given callback' do
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cb = @chain.last
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cb.callback.must_equal(callback)
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end
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end
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describe 'when a Symbol is passed' do
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before do
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@chain.append callback
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end
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let(:callback) { :upcase }
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it 'includes the given callback' do
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cb = @chain.last
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cb.callback.must_equal(callback)
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end
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it 'guarantees unique entries' do
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# append the callback again, see before block
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@chain.append callback
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@chain.size.must_equal(1)
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end
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end
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describe 'when a block is passed' do
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before do
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@chain.append(&callback)
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end
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let(:callback) { Proc.new{} }
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it 'includes the given callback' do
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cb = @chain.last
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assert_equal cb.callback, callback
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end
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end
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describe 'when multiple callbacks are passed' do
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before do
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@chain.append(*callbacks)
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end
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let(:callbacks) { [:upcase, Callable.new, Proc.new{}] }
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it 'includes all the given callbacks' do
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@chain.size.must_equal(callbacks.size)
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end
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it 'all the included callbacks are callable' do
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@chain.each do |callback|
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callback.must_respond_to(:call)
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end
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end
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end
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end
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describe '#prepend' do
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it 'wraps the given callback with a callable object' do
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@chain.prepend :symbolize!
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cb = @chain.first
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cb.must_respond_to(:call)
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end
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it 'prepends the callbacks at the beginning of the chain' do
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@chain.append(:foo)
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@chain.prepend(:bar)
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@chain.first.callback.must_equal(:bar)
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@chain.last.callback.must_equal(:foo)
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end
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describe 'when a callable object is passed' do
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before do
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@chain.prepend callback
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end
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let(:callback) { Callable.new }
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it 'includes the given callback' do
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cb = @chain.first
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cb.callback.must_equal(callback)
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end
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end
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describe 'when a Symbol is passed' do
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before do
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@chain.prepend callback
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end
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let(:callback) { :upcase }
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it 'includes the given callback' do
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cb = @chain.first
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cb.callback.must_equal(callback)
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end
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it 'guarantees unique entries' do
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# append the callback again, see before block
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@chain.prepend callback
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@chain.size.must_equal(1)
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end
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end
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describe 'when a block is passed' do
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before do
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@chain.prepend(&callback)
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end
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let(:callback) { Proc.new{} }
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it 'includes the given callback' do
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cb = @chain.first
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assert_equal cb.callback, callback
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end
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end
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describe 'when multiple callbacks are passed' do
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before do
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@chain.prepend(*callbacks)
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end
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let(:callbacks) { [:upcase, Callable.new, Proc.new{}] }
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it 'includes all the given callbacks' do
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@chain.size.must_equal(callbacks.size)
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end
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it 'all the included callbacks are callable' do
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@chain.each do |callback|
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callback.must_respond_to(:call)
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end
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end
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end
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end
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describe '#run' do
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let(:action) { Action.new }
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let(:params) { Hash[id: 23] }
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describe 'when symbols are passed' do
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before do
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@chain.append :authenticate!, :set_article
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@chain.run action, params
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end
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it 'executes the callbacks' do
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authenticate = action.logger.shift
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authenticate.must_equal 'authenticate!'
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set_article = action.logger.shift
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set_article.must_equal "set_article: #{ params[:id] }"
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end
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end
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describe 'when procs are passed' do
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before do
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@chain.append do
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logger.push 'authenticate!'
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end
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@chain.append do |params|
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logger.push "set_article: #{ params[:id] }"
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end
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@chain.run action, params
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end
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it 'executes the callbacks' do
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authenticate = action.logger.shift
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authenticate.must_equal 'authenticate!'
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set_article = action.logger.shift
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set_article.must_equal "set_article: #{ params[:id] }"
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end
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end
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end
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describe '#freeze' do
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before do
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@chain.freeze
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end
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it 'must be frozen' do
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@chain.must_be :frozen?
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end
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it 'raises an error if try to add a callback when frozen' do
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-> { @chain.append :authenticate! }.must_raise RuntimeError
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end
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end
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end
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describe Hanami::Utils::Callbacks::Factory do
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describe '.fabricate' do
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before do
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@callback = Hanami::Utils::Callbacks::Factory.fabricate(callback)
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end
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describe 'when a callable is passed' do
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let(:callback) { Callable.new }
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it 'fabricates a Callback' do
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@callback.must_be_kind_of(Hanami::Utils::Callbacks::Callback)
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end
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it 'wraps the given callback' do
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@callback.callback.must_equal(callback)
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end
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end
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describe 'when a symbol is passed' do
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let(:callback) { :symbolize! }
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it 'fabricates a MethodCallback' do
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@callback.must_be_kind_of(Hanami::Utils::Callbacks::MethodCallback)
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end
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it 'wraps the given callback' do
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@callback.callback.must_equal(callback)
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end
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end
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end
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end
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describe Hanami::Utils::Callbacks::Callback do
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before do
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@callback = Hanami::Utils::Callbacks::Callback.new(callback)
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end
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let(:callback) { Proc.new{|params| logger.push("set_article: #{ params[:id] }") } }
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it 'executes self within the given context' do
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context = Action.new
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@callback.call(context, { id: 23 })
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invokation = context.logger.shift
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invokation.must_equal("set_article: 23")
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end
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end
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describe Hanami::Utils::Callbacks::MethodCallback do
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before do
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@callback = Hanami::Utils::Callbacks::MethodCallback.new(callback)
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end
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let(:callback) { :set_article }
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it 'executes self within the given context' do
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context = Action.new
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@callback.call(context, { id: 23 })
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invokation = context.logger.shift
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invokation.must_equal("set_article: 23")
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end
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it 'implements #hash' do
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cb = Hanami::Utils::Callbacks::MethodCallback.new(callback)
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cb.send(:hash).must_equal(@callback.send(:hash))
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end
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end
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