Do not generate default alt text in image tags

- Auto-generating content from the filename of an image is not suitable
  alternative text; alt text that isn't fully considered can be
  distracting and fatiguing for screen readers users (blind, low vision,
  dyslexic people).
- Setting a filename fallback short circuits screen reader default
  behavior and configuration for blank descriptions.
- Setting poor defaults also creates false negatives for accessibility
  linting and testing software, that makes it harder to improve
  application accessibility.

***

- After this change, if authors leave images without alt text, screen
  readers will fallback to default behavior for missing alt text.
- Also with this change, Automated linting and testing tools will
  correctly generate warnings.

[Fixes #30096]

1 files changed, 2 insertions, 2 deletions

diff --git a/actionmailer/test/asset_host_test.rb b/actionmailer/test/asset_host_test.rb
index 2a14248488..9cd8cae88c 100644
--- a/actionmailer/test/asset_host_test.rb
+++ b/actionmailer/test/asset_host_test.rb
@@ -24,7 +24,7 @@ class AssetHostTest < ActionMailer::TestCase
 
   def test_asset_host_as_string
     mail = AssetHostMailer.email_with_asset
-    assert_dom_equal '<img alt="Somelogo" src="http://www.example.com/images/somelogo.png" />', mail.body.to_s.strip
+    assert_dom_equal '<img src="http://www.example.com/images/somelogo.png" />', mail.body.to_s.strip
   end
 
   def test_asset_host_as_one_argument_proc
@@ -34,6 +34,6 @@ class AssetHostTest < ActionMailer::TestCase
       end
     }
     mail = AssetHostMailer.email_with_asset
-    assert_dom_equal '<img alt="Somelogo" src="http://images.example.com/images/somelogo.png" />', mail.body.to_s.strip
+    assert_dom_equal '<img src="http://images.example.com/images/somelogo.png" />', mail.body.to_s.strip
   end
 end