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require 'abstract_unit'
module Notifications
class TestCase < ActiveSupport::TestCase
def setup
ActiveSupport::Notifications.notifier = nil
@notifier = ActiveSupport::Notifications.notifier
@events = []
@notifier.subscribe { |*args| @events << event(*args) }
end
private
def event(*args)
ActiveSupport::Notifications::Event.new(*args)
end
def drain
@notifier.wait
end
end
class SyncPubSubTest < TestCase
def test_events_are_published_to_a_listener
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo]], @events
end
def test_subscriber_with_pattern
events = []
@notifier.subscribe('1') { |*args| events << args }
@notifier.publish '1'
@notifier.publish '1.a'
@notifier.publish 'a.1'
@notifier.wait
assert_equal [['1'], ['1.a']], events
end
def test_subscriber_with_pattern_as_regexp
events = []
@notifier.subscribe(/\d/) { |*args| events << args }
@notifier.publish '1'
@notifier.publish 'a.1'
@notifier.publish '1.a'
@notifier.wait
assert_equal [['1'], ['a.1'], ['1.a']], events
end
def test_multiple_subscribers
@another = []
@notifier.subscribe { |*args| @another << args }
@notifier.publish :foo
@notifier.wait
assert_equal [[:foo]], @events
assert_equal [[:foo]], @another
end
private
def event(*args)
args
end
end
class InstrumentationTest < TestCase
delegate :instrument, :instrument!, :to => ActiveSupport::Notifications
def test_instrument_returns_block_result
assert_equal 2, instrument(:awesome) { 1 + 1 }
drain
end
def test_instrument_with_bang_returns_result_even_on_failure
begin
instrument!(:awesome, :payload => "notifications") do
raise "OMG"
end
flunk
rescue
end
drain
assert_equal 1, @events.size
assert_equal :awesome, @events.last.name
assert_equal Hash[:payload => "notifications"], @events.last.payload
end
def test_instrument_yields_the_paylod_for_further_modification
assert_equal 2, instrument(:awesome) { |p| p[:result] = 1 + 1 }
drain
assert_equal 1, @events.size
assert_equal :awesome, @events.first.name
assert_equal Hash[:result => 2], @events.first.payload
end
def test_instrumenter_exposes_its_id
assert_equal 20, ActiveSupport::Notifications.instrumenter.id.size
end
def test_nested_events_can_be_instrumented
instrument(:awesome, :payload => "notifications") do
instrument(:wot, :payload => "child") do
1 + 1
end
drain
assert_equal 1, @events.size
assert_equal :wot, @events.first.name
assert_equal Hash[:payload => "child"], @events.first.payload
end
drain
assert_equal 2, @events.size
assert_equal :awesome, @events.last.name
assert_equal Hash[:payload => "notifications"], @events.last.payload
end
def test_instrument_does_not_publish_when_exception_is_raised
begin
instrument(:awesome, :payload => "notifications") do
raise "OMG"
end
rescue RuntimeError => e
assert_equal "OMG", e.message
end
drain
assert_equal 0, @events.size
end
def test_event_is_pushed_even_without_block
instrument(:awesome, :payload => "notifications")
drain
assert_equal 1, @events.size
assert_equal :awesome, @events.last.name
assert_equal Hash[:payload => "notifications"], @events.last.payload
end
end
class EventTest < TestCase
def test_events_are_initialized_with_details
time = Time.now
event = event(:foo, time, time + 0.01, random_id, {})
assert_equal :foo, event.name
assert_equal time, event.time
assert_equal 10.0, event.duration
end
def test_events_consumes_information_given_as_payload
event = event(:foo, Time.now, Time.now + 1, random_id, :payload => :bar)
assert_equal Hash[:payload => :bar], event.payload
end
def test_event_is_parent_based_on_time_frame
time = Time.utc(2009, 01, 01, 0, 0, 1)
parent = event(:foo, Time.utc(2009), Time.utc(2009) + 100, random_id, {})
child = event(:foo, time, time + 10, random_id, {})
not_child = event(:foo, time, time + 100, random_id, {})
assert parent.parent_of?(child)
assert !child.parent_of?(parent)
assert !parent.parent_of?(not_child)
assert !not_child.parent_of?(parent)
end
protected
def random_id
@random_id ||= ActiveSupport::SecureRandom.hex(10)
end
end
end
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