1 files changed, 26 insertions, 2 deletions
diff --git a/spec/ruby/library/timeout/timeout_spec.rb b/spec/ruby/library/timeout/timeout_spec.rb
index fc957dc36f..e16bcaea6a 100644
--- a/spec/ruby/library/timeout/timeout_spec.rb
+++ b/spec/ruby/library/timeout/timeout_spec.rb
@@ -3,7 +3,7 @@ require 'timeout'
 
 describe "Timeout.timeout" do
   it "raises Timeout::Error when it times out with no specified error type" do
-    lambda {
+    -> {
       Timeout.timeout(1) do
         sleep
       end
@@ -11,16 +11,40 @@ describe "Timeout.timeout" do
   end
 
   it "raises specified error type when it times out" do
-    lambda do
+    -> do
       Timeout.timeout(1, StandardError) do
         sleep
       end
     end.should raise_error(StandardError)
   end
 
+  it "raises specified error type with specified message when it times out" do
+    -> do
+      Timeout.timeout(1, StandardError, "foobar") do
+        sleep
+      end
+    end.should raise_error(StandardError, "foobar")
+  end
+
+  it "raises specified error type with a default message when it times out if message is nil" do
+    -> do
+      Timeout.timeout(1, StandardError, nil) do
+        sleep
+      end
+    end.should raise_error(StandardError, "execution expired")
+  end
+
   it "returns back the last value in the block" do
     Timeout.timeout(1) do
       42
     end.should == 42
   end
+
+  ruby_version_is "3.4" do
+    it "raises an ArgumentError when provided with a negative duration" do
+      -> {
+        Timeout.timeout(-1)
+      }.should raise_error(ArgumentError, "Timeout sec must be a non-negative number")
+    end
+  end
 end