Add fallback block to `OpenStruct#delete_field` (#1409)

1 files changed, 11 insertions, 1 deletions

diff --git a/test/ostruct/test_ostruct.rb b/test/ostruct/test_ostruct.rb
index 7773da46af..f8d184b011 100644
--- a/test/ostruct/test_ostruct.rb
+++ b/test/ostruct/test_ostruct.rb
@@ -89,7 +89,7 @@ class TC_OpenStruct < Test::Unit::TestCase
     a = o.delete_field :a
     assert_not_respond_to(o, :a, bug)
     assert_not_respond_to(o, :a=, bug)
-    assert_equal(a, 'a')
+    assert_equal('a', a)
     s = Object.new
     def s.to_sym
       :foo
@@ -100,6 +100,16 @@ class TC_OpenStruct < Test::Unit::TestCase
     o.delete_field s
     assert_not_respond_to(o, :foo)
     assert_not_respond_to(o, :foo=)
+
+    assert_raise(NameError) { o.delete_field(s) }
+    assert_equal(:bar, o.delete_field(s) { :bar })
+
+    o[s] = :foobar
+    assert_respond_to(o, :foo)
+    assert_respond_to(o, :foo=)
+    assert_equal(:foobar, o.delete_field(s) { :baz })
+
+    assert_equal(42, OpenStruct.new(foo: 42).delete_field(:foo) { :bug })
   end
 
   def test_setter