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Diffstat (limited to 'spec/ruby/core/mutex/sleep_spec.rb')
-rw-r--r-- | spec/ruby/core/mutex/sleep_spec.rb | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/spec/ruby/core/mutex/sleep_spec.rb b/spec/ruby/core/mutex/sleep_spec.rb new file mode 100644 index 0000000000..a3fb86fba7 --- /dev/null +++ b/spec/ruby/core/mutex/sleep_spec.rb @@ -0,0 +1,74 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Mutex#sleep" do + describe "when not locked by the current thread" do + it "raises a ThreadError" do + m = Mutex.new + lambda { m.sleep }.should raise_error(ThreadError) + end + + it "raises an ArgumentError if passed a negative duration" do + m = Mutex.new + lambda { m.sleep(-0.1) }.should raise_error(ArgumentError) + lambda { m.sleep(-1) }.should raise_error(ArgumentError) + end + end + + it "raises an ArgumentError if passed a negative duration" do + m = Mutex.new + m.lock + lambda { m.sleep(-0.1) }.should raise_error(ArgumentError) + lambda { m.sleep(-1) }.should raise_error(ArgumentError) + end + + it "pauses execution for approximately the duration requested" do + m = Mutex.new + m.lock + duration = 0.1 + start = Time.now + m.sleep duration + (Time.now - start).should be_close(duration, 0.2) + end + + it "unlocks the mutex while sleeping" do + m = Mutex.new + locked = false + th = Thread.new { m.lock; locked = true; m.sleep } + Thread.pass until locked + Thread.pass while th.status and th.status != "sleep" + m.locked?.should be_false + th.run + th.join + end + + it "relocks the mutex when woken" do + m = Mutex.new + m.lock + m.sleep(0.01) + m.locked?.should be_true + end + + it "relocks the mutex when woken by an exception being raised" do + m = Mutex.new + locked = false + th = Thread.new do + m.lock + locked = true + begin + m.sleep + rescue Exception + m.locked? + end + end + Thread.pass until locked + Thread.pass while th.status and th.status != "sleep" + th.raise(Exception) + th.value.should be_true + end + + it "returns the rounded number of seconds asleep" do + m = Mutex.new + m.lock + m.sleep(0.01).should be_kind_of(Integer) + end +end |