1 files changed, 39 insertions, 0 deletions
diff --git a/spec/support/shared_contexts/views/html_safe_render_shared_context.rb b/spec/support/shared_contexts/views/html_safe_render_shared_context.rb
new file mode 100644
index 00000000000..3acca60c901
--- /dev/null
+++ b/spec/support/shared_contexts/views/html_safe_render_shared_context.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+RSpec.shared_context 'when rendered view has no HTML escapes', type: :view do
+  # Check once per example if `rendered` contains HTML escapes.
+  let(:rendered) do |example|
+    super().tap do |rendered|
+      next if example.metadata[:skip_html_escaped_tags_check]
+
+      ensure_no_html_escaped_tags!(rendered, example)
+    end
+  end
+
+  def ensure_no_html_escaped_tags!(content, example)
+    match_data = HtmlEscapedHelpers.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