From e0b336c8ce84e1456fc6126ca232289667db3e19 Mon Sep 17 00:00:00 2001
From: Alan Wu <XrXr@users.noreply.github.com>
Date: Sun, 14 Jul 2019 23:41:43 -0400
Subject: Add specs for calling into Kernel#lambda with super

---
 spec/ruby/core/kernel/fixtures/classes.rb | 22 ++++++++++++++++++++++
 spec/ruby/core/kernel/lambda_spec.rb      | 17 ++++++++++++++++-
 2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/spec/ruby/core/kernel/fixtures/classes.rb b/spec/ruby/core/kernel/fixtures/classes.rb
index 2909a621a9..2f2bbf1b23 100644
--- a/spec/ruby/core/kernel/fixtures/classes.rb
+++ b/spec/ruby/core/kernel/fixtures/classes.rb
@@ -337,6 +337,28 @@ module KernelSpecs
     end
   end
 
+  module LambdaSpecs
+    module ZSuper
+      def lambda
+        super
+      end
+    end
+
+    class ForwardBlockWithZSuper
+      prepend(ZSuper)
+    end
+
+    module Ampersand
+      def lambda(&block)
+        super(&block)
+      end
+    end
+
+    class SuperAmpersand
+      prepend(Ampersand)
+    end
+  end
+
   class RespondViaMissing
     def respond_to_missing?(method, priv=false)
       case method
diff --git a/spec/ruby/core/kernel/lambda_spec.rb b/spec/ruby/core/kernel/lambda_spec.rb
index 4796d65352..537ac2628c 100644
--- a/spec/ruby/core/kernel/lambda_spec.rb
+++ b/spec/ruby/core/kernel/lambda_spec.rb
@@ -31,13 +31,28 @@ describe "Kernel.lambda" do
     l.lambda?.should be_true
   end
 
-  it "returned the passed Proc if given an existing Proc" do
+  it "returns the passed Proc if given an existing Proc" do
     some_proc = proc {}
     l = lambda(&some_proc)
     l.should equal(some_proc)
     l.lambda?.should be_false
   end
 
+  it "creates a lambda-style Proc when called with zsuper" do
+    l = KernelSpecs::LambdaSpecs::ForwardBlockWithZSuper.new.lambda { 42 }
+    l.lambda?.should be_true
+    l.call.should == 42
+
+    lambda { l.call(:extra) }.should raise_error(ArgumentError)
+  end
+
+  it "returns the passed Proc if given an existing Proc through super" do
+    some_proc = proc { }
+    l = KernelSpecs::LambdaSpecs::SuperAmpersand.new.lambda(&some_proc)
+    l.should equal(some_proc)
+    l.lambda?.should be_false
+  end
+
   it "checks the arity of the call when no args are specified" do
     l = lambda { :called }
     l.call.should == :called
-- 
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