1 files changed, 31 insertions, 0 deletions
diff --git a/spec/support/helpers/html_escaped_helpers.rb b/spec/support/helpers/html_escaped_helpers.rb
index 7f6825e9598..7cbea7e7428 100644
--- a/spec/support/helpers/html_escaped_helpers.rb
+++ b/spec/support/helpers/html_escaped_helpers.rb
@@ -21,4 +21,35 @@ module HtmlEscapedHelpers
 
     match_data
   end
+
+  # Checks if +content+ contains HTML escaped tags and raises an exception
+  # if it does.
+  #
+  # See #match_html_escaped_tags for details.
+  def ensure_no_html_escaped_tags!(content, example)
+    match_data = match_html_escaped_tags(content)
+    return unless match_data
+
+    # Truncate
+    pre_match = match_data.pre_match.last(50)
+    match = match_data[0]
+    post_match = match_data.post_match.first(50)
+
+    string = "#{pre_match}«#{match}»#{post_match}"
+
+    raise <<~MESSAGE
+      The following string contains HTML escaped tags:
+
+      #{string}
+
+      Please consider using `.html_safe`.
+
+      This check can be disabled via:
+
+        it #{example.description.inspect}, :skip_html_escaped_tags_check do
+          ...
+        end
+
+    MESSAGE
+  end
 end