1 files changed, 14 insertions, 0 deletions
diff --git a/spec/ruby/core/proc/parameters_spec.rb b/spec/ruby/core/proc/parameters_spec.rb
index 6c21784ab6..972596d2ea 100644
--- a/spec/ruby/core/proc/parameters_spec.rb
+++ b/spec/ruby/core/proc/parameters_spec.rb
@@ -33,6 +33,16 @@ describe "Proc#parameters" do
     it "regards named parameters in lambda as optional if lambda: false keyword used" do
       -> x { }.parameters(lambda: false).first.first.should == :opt
     end
+
+    it "regards named parameters in procs and lambdas as required if lambda keyword is truthy" do
+      proc {|x| }.parameters(lambda: 123).first.first.should == :req
+      -> x { }.parameters(lambda: 123).first.first.should == :req
+    end
+
+    it "ignores the lambda keyword if it is nil" do
+      proc {|x|}.parameters(lambda: nil).first.first.should == :opt
+      -> x { }.parameters(lambda: nil).first.first.should == :req
+    end
   end
 
   it "regards optional keyword parameters in procs as optional" do
@@ -160,4 +170,8 @@ describe "Proc#parameters" do
       [:block, :_]
     ]
   end
+
+  it "returns :nokey for **nil parameter" do
+    proc { |**nil| }.parameters.should == [[:nokey]]
+  end
 end