Fix CICPHash#to_s to operate like #inspect on Ruby 1.9+

Author: jeremyevans

CHANGELOG

@@ -1,3 +1,7 @@
+=== master
+
+* Fix CICPHash#to_s to operate like #inspect on Ruby 1.9+ (jeremyevans)
+
 === 2.0.0 (2021-12-10)
 
 * Support new Hash instance methods added in 1.9 - 3.0 (jeremyevans)

cicphash.rb

@@ -260,8 +260,12 @@ def to_hash
     hash
   end
 
-  def to_s
-    to_a.join
+  if RUBY_VERSION >= '1.9'
+    alias to_s inspect
+  else
+    def to_s
+      to_a.join
+    end
   end
 
   def update(hash, &block)

test/test_cicphash.rb

@@ -253,13 +253,24 @@ def test_index
     end
   end
 
-  def test_inspect_and_to_s
+  def test_inspect
     assert_equal '{}', CICPHash[].inspect
-    assert_equal '', CICPHash[].to_s
     assert_equal '{1=>2}', CICPHash[1=>2].inspect
-    assert_equal '12', CICPHash[1=>2].to_s
     assert ['{:ab=>"CD", [:"3"]=>4}', '{[:"3"]=>4, :ab=>"CD"}'].include?(CICPHash[:ab=>'CD', [:'3']=>4].inspect)
-    assert ['abCD34', '34abCD'].include?(CICPHash[:ab=>'CD', [:'3']=>4].to_s)
+  end
+  
+  if RUBY_VERSION >= '1.9'
+    def test_to_s
+      assert_equal '{}', CICPHash[].to_s
+      assert_equal '{1=>2}', CICPHash[1=>2].to_s
+      assert_equal '{:ab=>"CD", [:"3"]=>4}', CICPHash[:ab=>'CD', [:'3']=>4].to_s
+    end
+  else
+    def test_to_s
+      assert_equal '', CICPHash[].to_s
+      assert_equal '12', CICPHash[1=>2].to_s
+      assert ['abCD34', '34abCD'].include?(CICPHash[:ab=>'CD', [:'3']=>4].to_s)
+    end
   end
 
   def test_invert