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require 'test/unit'
require 'thread_safe/synchronized_delegator.rb'
class TestSynchronizedDelegator < Test::Unit::TestCase
def test_wraps_array
sync_array = SynchronizedDelegator.new(array = [])
array << 1
assert_equal 1, sync_array[0]
sync_array << 2
assert_equal 2, array[1]
end
def test_synchronizes_access
t1_continue, t2_continue = false, false
hash = Hash.new do |hash, key|
t2_continue = true
unless hash.find { |e| e[1] == key.to_s } # just to do something
hash[key] = key.to_s
Thread.pass until t1_continue
end
end
sync_hash = SynchronizedDelegator.new(hash)
sync_hash[1] = 'egy'
t1 = Thread.new do
sync_hash[2] = 'dva'
sync_hash[3] # triggers t2_continue
end
t2 = Thread.new do
Thread.pass until t2_continue
sync_hash[4] = '42'
end
sleep(0.05) # sleep some to allow threads to boot
until t2.status == 'sleep' do
Thread.pass
end
assert_equal 3, hash.keys.size
t1_continue = true
t1.join; t2.join
assert_equal 4, sync_hash.size
end
def test_synchronizes_access_with_block
t1_continue, t2_continue = false, false
sync_array = SynchronizedDelegator.new(array = [])
t1 = Thread.new do
sync_array << 1
sync_array.each do
t2_continue = true
Thread.pass until t1_continue
end
end
t2 = Thread.new do
# sleep(0.01)
Thread.pass until t2_continue
sync_array << 2
end
until t2.status == 'sleep' || t2.status == false do
Thread.pass
end
assert_equal 1, array.size
t1_continue = true
t1.join; t2.join
assert_equal [1, 2], array
end
end
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