1 files changed, 52 insertions, 0 deletions
diff --git a/spec/ruby/core/kernel/sleep_spec.rb b/spec/ruby/core/kernel/sleep_spec.rb
new file mode 100644
index 0000000000..bcb0060aa3
--- /dev/null
+++ b/spec/ruby/core/kernel/sleep_spec.rb
@@ -0,0 +1,52 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+
+describe "Kernel#sleep" do
+  it "is a private method" do
+    Kernel.should have_private_instance_method(:sleep)
+  end
+
+  it "accepts a Float" do
+    sleep(0.1).should be_close(0, 2)
+  end
+
+  it "accepts a Fixnum" do
+    sleep(0).should be_close(0, 2)
+  end
+
+  it "accepts a Rational" do
+    sleep(Rational(1, 9)).should be_close(0, 2)
+  end
+
+  it "raises an ArgumentError when passed a negative duration" do
+    lambda { sleep(-0.1) }.should raise_error(ArgumentError)
+    lambda { sleep(-1) }.should raise_error(ArgumentError)
+  end
+
+  it "raises a TypeError when passed nil" do
+    lambda { sleep(nil)   }.should raise_error(TypeError)
+  end
+
+  it "raises a TypeError when passed a String" do
+    lambda { sleep('2')   }.should raise_error(TypeError)
+  end
+
+  it "pauses execution indefinitely if not given a duration" do
+    running = false
+    t = Thread.new do
+      running = true
+      sleep
+      5
+    end
+
+    Thread.pass until running
+    Thread.pass while t.status and t.status != "sleep"
+
+    t.wakeup
+    t.value.should == 5
+  end
+end
+
+describe "Kernel.sleep" do
+  it "needs to be reviewed for spec completeness"
+end