From 57d6c6f83185aebb1c1183293d11d17ba9b0f231 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20R=C3=A4dle?= <raedle@fb.com>
Date: Sat, 21 Aug 2021 20:18:23 -0700
Subject: [PATCH] [tests] Encode/decode doc with attribute changes
Encode a document with a text and decode it into a new document. Then, test if the same change to both documents results in the same text deltas.
---
tests/encoding.tests.js | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/tests/encoding.tests.js b/tests/encoding.tests.js
index 6a191009..4c370ea2 100644
--- a/tests/encoding.tests.js
+++ b/tests/encoding.tests.js
@@ -106,3 +106,28 @@ export const testDiffStateVectorOfUpdateIgnoresSkips = tc => {
t.assert(state.get(ydoc.clientID) === 1)
t.assert(state.size === 1)
}
+
+/**
+ * Encode a document with a text and decode it into a new document. Then, test if
+ * the same change to both documents results in the same text deltas.
+ *
+ * @param {t.TestCase} tc
+ */
+export const testEncodeDecode = async tc => {
+ const ydoc1 = new Doc()
+ const ydoc2 = new Doc()
+ const text1 = ydoc1.getText()
+ text1.insert(0, "\n\n\n")
+ text1.format(0, 3, { url: 'http://example.com' });
+ applyUpdate(ydoc2, encodeStateAsUpdate(ydoc1))
+ ydoc1.getText().format(1, 1, { url: 'http://docs.yjs.dev' });
+ ydoc2.getText().format(1, 1, { url: 'http://docs.yjs.dev' });
+ const text2 = ydoc2.getText()
+ const expectedResult = [
+ { insert: '\n', attributes: { url: 'http://example.com' } },
+ { insert: '\n', attributes: { url: 'http://docs.yjs.dev' } },
+ { insert: '\n', attributes: { url: 'http://example.com' } }
+ ]
+ t.compare(text1.toDelta(), expectedResult)
+ t.compare(text1.toDelta(), text2.toDelta())
+}