diff options
Diffstat (limited to 'spec/support/helpers/html_escaped_helpers.rb')
| -rw-r--r-- | spec/support/helpers/html_escaped_helpers.rb | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/spec/support/helpers/html_escaped_helpers.rb b/spec/support/helpers/html_escaped_helpers.rb new file mode 100644 index 00000000000..7f6825e9598 --- /dev/null +++ b/spec/support/helpers/html_escaped_helpers.rb @@ -0,0 +1,24 @@ +# frozen_string_literal: true + +module HtmlEscapedHelpers + extend self + + # Checks if +content+ contains HTML escaped tags and returns its match. + # + # It matches escaped opening and closing tags `<<name>` and + # `</<name>`. The match is discarded if the tag is inside a quoted + # attribute value. + # Foor example, `<div title="We allow # <b>bold</b>">`. + # + # @return [MatchData, nil] Returns the match or +nil+ if no match was found. + def match_html_escaped_tags(content) + match_data = %r{<\s*(?:/\s*)?\w+}.match(content) + return unless match_data + + # Escaped HTML tags are allowed inside quoted attribute values like: + # `title="Press <back>"` + return if %r{=\s*["'][^>]*\z}.match?(match_data.pre_match) + + match_data + end +end |