diff options
Diffstat (limited to 'spec/rubyspec/core/mutex/locked_spec.rb')
-rw-r--r-- | spec/rubyspec/core/mutex/locked_spec.rb | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/spec/rubyspec/core/mutex/locked_spec.rb b/spec/rubyspec/core/mutex/locked_spec.rb new file mode 100644 index 0000000000..7b92534be4 --- /dev/null +++ b/spec/rubyspec/core/mutex/locked_spec.rb @@ -0,0 +1,36 @@ +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 |