Prefer assert_raise instead of flunk + rescue to test for exceptions

Change most tests to make use of assert_raise returning the raised
exception rather than relying on a combination of flunk + rescue to
check for exception types/messages.

1 files changed, 3 insertions, 3 deletions

diff --git a/activesupport/test/multibyte_chars_test.rb b/activesupport/test/multibyte_chars_test.rb
index 2bf73291a2..659fceb852 100644
--- a/activesupport/test/multibyte_chars_test.rb
+++ b/activesupport/test/multibyte_chars_test.rb
@@ -221,9 +221,9 @@ class MultibyteCharsUTF8BehaviourTest < ActiveSupport::TestCase
   end
 
   def test_include_raises_when_nil_is_passed
-    @chars.include?(nil)
-    flunk "Expected chars.include?(nil) to raise TypeError or NoMethodError"
-  rescue Exception
+    assert_raises TypeError, NoMethodError, "Expected chars.include?(nil) to raise TypeError or NoMethodError" do
+      @chars.include?(nil)
+    end
   end
 
   def test_index_should_return_character_offset