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ruby--ruby/spec/rubyspec/core/mutex/synchronize_spec.rb
eregon 95e8c48dd3 Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2017-05-07 12:04:49 +00:00

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Ruby

require File.expand_path('../../../spec_helper', __FILE__)
describe "Mutex#synchronize" do
it "wraps the lock/unlock pair in an ensure" do
m1 = Mutex.new
m2 = Mutex.new
m2.lock
synchronized = false
th = Thread.new do
lambda do
m1.synchronize do
synchronized = true
m2.lock
raise Exception
end
end.should raise_error(Exception)
end
Thread.pass until synchronized
m1.locked?.should be_true
m2.unlock
th.join
m1.locked?.should be_false
end
end