struct.c: add keyword_init option to Struct.new

to initialize struct with keyword arguments.

[Feature #11925] [close GH-1771]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61137 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 0 deletions

diff --git a/test/ruby/test_struct.rb b/test/ruby/test_struct.rb
index 573f65d0b9..7bdf9b889f 100644
--- a/test/ruby/test_struct.rb
+++ b/test/ruby/test_struct.rb
@@ -92,6 +92,23 @@ module TestStruct
     assert_equal([:utime, :stime, :cutime, :cstime], Process.times.members)
   end
 
+  def test_struct_new_with_keyword_init
+    @Struct.new("KeywordArgsTrue", :a, :b, keyword_init: true)
+    @Struct.new("KeywordArgsFalse", :a, :b, keyword_init: false)
+
+    assert_raise(ArgumentError) { @Struct::KeywordArgsTrue.new(1, 2) }
+    assert_nothing_raised { @Struct::KeywordArgsFalse.new(1, 2) }
+    assert_nothing_raised { @Struct::KeywordArgsTrue.new(a: 1, b: 2) }
+    assert_raise(ArgumentError) { @Struct::KeywordArgsTrue.new(1, b: 2) }
+    assert_raise(ArgumentError) { @Struct::KeywordArgsTrue.new(a: 1, b: 2, c: 3) }
+    assert_equal @Struct::KeywordArgsTrue.new(a: 1, b: 2).values, @Struct::KeywordArgsFalse.new(1, 2).values
+
+    @Struct.instance_eval do
+      remove_const(:KeywordArgsTrue)
+      remove_const(:KeywordArgsFalse)
+    end
+  end
+
   def test_initialize
     klass = @Struct.new(:a)
     assert_raise(ArgumentError) { klass.new(1, 2) }