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module Wisper
module Broadcasters
describe LoggerBroadcaster do
describe 'integration tests:' do
let(:publisher) { publisher_class.new }
let(:listener) { double }
let(:logger) { double.as_null_object }
context 'with only positional arguments' do
it 'broadcasts the event to the listener' do
publisher.subscribe(listener, :broadcaster => LoggerBroadcaster.new(logger, Wisper::Broadcasters::SendBroadcaster.new))
if RUBY_VERSION < '3.0'
# Ruby 2.7 receives **{} as a positional argument
expect(listener).to receive(:it_happened).with(1, 2, {})
else
# Ruby 3.0 doesn't pass **empty_hash
expect(listener).to receive(:it_happened).with(1, 2)
end
publisher.send(:broadcast, :it_happened, 1, 2)
end
end
context 'with only keyword arguments' do
it 'broadcasts the event to the listener' do
publisher.subscribe(listener, :broadcaster => LoggerBroadcaster.new(logger, Wisper::Broadcasters::SendBroadcaster.new))
expect(listener).to receive(:it_happened).with(key: 'value')
publisher.send(:broadcast, :it_happened, key: 'value')
end
end
context 'with positional and keyword arguments' do
it 'broadcasts the event to the listener' do
publisher.subscribe(listener, :broadcaster => LoggerBroadcaster.new(logger, Wisper::Broadcasters::SendBroadcaster.new))
expect(listener).to receive(:it_happened).with(1, 2, key: 'value')
publisher.send(:broadcast, :it_happened, 1, 2, key: 'value')
end
end
end
describe 'unit tests:' do
let(:publisher) { classy_double('Publisher', id: 1) }
let(:listener) { classy_double('Listener', id: 2) }
let(:logger) { double('Logger').as_null_object }
let(:broadcaster) { double('Broadcaster').as_null_object }
let(:event) { 'thing_created' }
subject { LoggerBroadcaster.new(logger, broadcaster) }
describe '#broadcast' do
context 'without arguments' do
let(:args) { [] }
let(:kwargs) { {} }
it 'logs published event' do
expect(logger).to receive(:info).with('[WISPER] Publisher#1 published thing_created to Listener#2 with no arguments and no keyword arguments')
subject.broadcast(listener, publisher, event, *args, **kwargs)
end
it 'delegates broadcast to a given broadcaster' do
expect(broadcaster).to receive(:broadcast).with(listener, publisher, event, *args, **kwargs)
subject.broadcast(listener, publisher, event, *args, **kwargs)
end
end
context 'with arguments' do
let(:args) { [arg_double(id: 3), arg_double(id: 4)] }
let(:kwargs) { {x: :y} }
it 'logs published event and arguments' do
expect(logger).to receive(:info).with("[WISPER] Publisher#1 published thing_created to Listener#2 with Argument#3, Argument#4 and keyword arguments {:x=>:y}")
subject.broadcast(listener, publisher, event, *args, **kwargs)
end
it 'delegates broadcast to a given broadcaster' do
expect(broadcaster).to receive(:broadcast).with(listener, publisher, event, *args, **kwargs)
subject.broadcast(listener, publisher, event, *args, **kwargs)
end
context 'when argument is a hash' do
let(:args) { [hash] }
let(:hash) { {key: 'value'} }
let(:kwargs) { {x: :y} }
it 'logs published event and arguments' do
expect(logger).to receive(:info).with("[WISPER] Publisher#1 published thing_created to Listener#2 with Hash##{hash.object_id}: #{hash.inspect} and keyword arguments {:x=>:y}")
subject.broadcast(listener, publisher, event, *args, **kwargs)
end
end
context 'when argument is an integer' do
let(:args) { [number] }
let(:number) { 10 }
it 'logs published event and arguments' do
expect(logger).to receive(:info).with("[WISPER] Publisher#1 published thing_created to Listener#2 with #{number.class.name}##{number.object_id}: 10 and keyword arguments {:x=>:y}")
subject.broadcast(listener, publisher, event, *args, **kwargs)
end
end
context 'when only keyword arguments are present' do
let(:args) { [] }
it 'logs published event and arguments' do
expect(logger).to receive(:info).with("[WISPER] Publisher#1 published thing_created to Listener#2 with no arguments and keyword arguments {:x=>:y}")
subject.broadcast(listener, publisher, event, *args, **kwargs)
end
end
end
end
# provides a way to specify `double.class.name` easily
def classy_double(klass, options)
double(klass, options.merge(class: double_class(klass)))
end
def arg_double(options)
classy_double('Argument', options)
end
def double_class(name)
double(name: name)
end
end
end
end
end
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