require File.expand_path('../../../spec_helper', __FILE__) describe "Mutex#locked?" do it "returns true if locked" do m = Mutex.new m.lock m.locked?.should be_true end it "returns false if unlocked" do m = Mutex.new m.locked?.should be_false end it "returns the status of the lock" do m1 = Mutex.new m2 = Mutex.new m2.lock # hold th with only m1 locked m1_locked = false th = Thread.new do m1.lock m1_locked = true m2.lock end Thread.pass until m1_locked m1.locked?.should be_true m2.unlock # release th th.join # A Thread releases its locks upon termination m1.locked?.should be_false end end