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require File.expand_path('../../../spec_helper', __FILE__)
describe "Mutex#try_lock" do
describe "when unlocked" do
it "returns true" do
m = Mutex.new
m.try_lock.should be_true
end
it "locks the mutex" do
m = Mutex.new
m.try_lock
m.locked?.should be_true
end
end
describe "when locked by the current thread" do
it "returns false" do
m = Mutex.new
m.lock
m.try_lock.should be_false
end
end
describe "when locked by another thread" do
it "returns false" do
m = Mutex.new
m.lock
Thread.new { m.try_lock }.value.should be_false
end
end
end
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