1 files changed, 8 insertions, 3 deletions
diff --git a/test/rubygems/test_gem_version.rb b/test/rubygems/test_gem_version.rb
index 2ba196e48d..2136034d1f 100644
--- a/test/rubygems/test_gem_version.rb
+++ b/test/rubygems/test_gem_version.rb
@@ -67,12 +67,17 @@ class TestGemVersion < Gem::TestCase
   end
 
   def test_initialize_bad
-    ["junk", "1.0\n2.0"].each do |bad|
-      e = assert_raises ArgumentError do
+    %W[
+      junk
+      1.0\n2.0
+      1..2
+      1.2\ 3.4
+    ].each do |bad|
+      e = assert_raises ArgumentError, bad do
         Gem::Version.new bad
       end
 
-      assert_equal "Malformed version number string #{bad}", e.message
+      assert_equal "Malformed version number string #{bad}", e.message, bad
     end
   end