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

1 files changed, 74 insertions, 0 deletions

diff --git a/spec/rubyspec/core/mutex/sleep_spec.rb b/spec/rubyspec/core/mutex/sleep_spec.rb
new file mode 100644
index 0000000000..a3fb86fba7
--- /dev/null
+++ b/spec/rubyspec/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