Add explanatory note in test

6386b26e · Robert Knight · cde29eef · 6386b26e
Commit 6386b26e authored Mar 02, 2022 by Robert Knight
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scroll-test.js src/annotator/util/test/scroll-test.js +2 -0

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--- a/src/annotator/util/test/scroll-test.js
+++ b/src/annotator/util/test/scroll-test.js
@@ -112,6 +112,8 @@ describe('annotator/util/scroll', () => {
    it('installs scroll-into-view workaround for XHTML documents', async () => {
      try {
+        // Simulate an XHTML document, where `tagName` is not upper-cased as
+        // it is for HTML documents.
        Object.defineProperty(document.body, 'tagName', {
          value: 'body',
          configurable: true,