Psych::SyntaxError now inherits from RuntimeError

Previously Psych::SyntaxError inherited from SyntaxError.  Since
SyntaxError does not inherit from StandardError a plain rescue could not
capture a YAML parse error.  This made code that needed to handle psych
errors slightly more complex.

Psych::SyntaxError now inherits from Psych::Error (allowing room for
future expansion of psych errors that can be caught under the same
umbrella) and inherits from RuntimeError.

1 files changed, 21 insertions, 0 deletions

diff --git a/test/psych/test_exception.rb b/test/psych/test_exception.rb
index c6d98d7..5615fc2 100644
--- a/test/psych/test_exception.rb
+++ b/test/psych/test_exception.rb
@@ -126,5 +126,26 @@ module Psych
       assert_equal 1, w.foo
       assert_nil w.bar
     end
+
+    def test_psych_syntax_error
+      Tempfile.open(['parsefile', 'yml']) do |t|
+        t.binmode
+        t.write '--- `'
+        t.close
+
+        begin
+          Psych.parse_file t.path
+        rescue StandardError
+          assert true # count assertion
+        ensure
+          return unless $!
+
+          ancestors = $!.class.ancestors.inspect
+
+          flunk "Psych::SyntaxError not rescued by StandardError: #{ancestors}"
+        end
+      end
+    end
+
   end
 end