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counter/test/models/cluster_test.rb

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2020-05-23 03:54:29 +00:00
# frozen_string_literal: true
require 'test_helper'
require 'concurrent/set'
class ClusterTest < ActiveSupport::TestCase
test 'Cluster has instance record of all cluster' do
assert_equal 0, Cluster.list.size, 'starts off empty'
Cluster.new('foo')
Cluster.new('bar')
assert_equal 2, Cluster.list.size, 'Increases as more are added'
end
test 'cluster are addressable by the UUID' do
Cluster.new('bar')
cluster = Cluster.new('foo')
assert_equal cluster, Cluster.get(cluster.uuid)
end
test 'works' do
cluster = Cluster.new('foo')
cluster.increment
assert_equal 1, cluster.count
cluster.decrement
assert_equal 0, cluster.count
end
test 'is thread safe' do
cluster = Cluster.new('foo')
threads = []
(1..500).each { |_x| threads << Thread.new { cluster.increment } }
threads.each(&:join)
assert_equal 500, cluster.count
end
end