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-rw-r--r--actionmailer/test/mail_service_test.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/actionmailer/test/mail_service_test.rb b/actionmailer/test/mail_service_test.rb
index 1e04531753..26ba652f2a 100644
--- a/actionmailer/test/mail_service_test.rb
+++ b/actionmailer/test/mail_service_test.rb
@@ -330,6 +330,7 @@ class ActionMailerTest < Test::Unit::TestCase
assert_equal "multipart/mixed", created.content_type
assert_equal "multipart/alternative", created.parts.first.content_type
assert_equal "bar", created.parts.first.header['foo'].to_s
+ assert_nil created.parts.first.charset
assert_equal "text/plain", created.parts.first.parts.first.content_type
assert_equal "text/html", created.parts.first.parts[1].content_type
assert_equal "application/octet-stream", created.parts[1].content_type