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require 'spec_helper'
describe Celluloid::Future, actor_system: :global do
it "creates future objects that can be retrieved later" do
future = Celluloid::Future.new { 40 + 2 }
expect(future.value).to eq(42)
end
it "passes arguments to future blocks" do
future = Celluloid::Future.new(40) { |n| n + 2 }
expect(future.value).to eq(42)
end
it "reraises exceptions that occur when the value is retrieved" do
class ExampleError < StandardError; end
future = Celluloid::Future.new { raise ExampleError, "oh noes crash!" }
expect { future.value }.to raise_exception(ExampleError)
end
it "knows if it's got a value yet" do
future = Celluloid::Future.new { sleep Celluloid::TIMER_QUANTUM * 5 }
expect(future).not_to be_ready
sleep Celluloid::TIMER_QUANTUM * 6
expect(future).to be_ready
end
it "raises TimeoutError when the future times out" do
future = Celluloid::Future.new { sleep 2 }
expect { future.value(1) }.to raise_exception(Celluloid::TimeoutError)
end
end
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