* lib/psych.rb: Fix problem with empty and white-space only strings.

  Thanks Peter McLain!
* test/psych/test_psych.rb: tests for change.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27099 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 0 deletions

diff --git a/test/psych/test_psych.rb b/test/psych/test_psych.rb
index fce070fa39..88fe83c19a 100644
--- a/test/psych/test_psych.rb
+++ b/test/psych/test_psych.rb
@@ -66,4 +66,11 @@ class TestPsych < Psych::TestCase
 
     assert_equal 'hello world', Psych.parse_file(name).transform
   end
+
+  def test_degenerate_strings
+    assert_equal false, Psych.load('    ')
+    assert_equal false, Psych.parse('   ')
+    assert_equal false, Psych.load('')
+    assert_equal false, Psych.parse('')
+  end
 end