From 6beab79eb4fe852080122f6018c85a9cd8078c56 Mon Sep 17 00:00:00 2001
From: Kevin Jahns <kevin.jahns@protonmail.com>
Date: Fri, 1 Mar 2024 11:39:31 +0100
Subject: [PATCH] add tests for falsy formatting attributes - #619

---
 tests/y-text.tests.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tests/y-text.tests.js b/tests/y-text.tests.js
index 87ac21a4..34ae7e9e 100644
--- a/tests/y-text.tests.js
+++ b/tests/y-text.tests.js
@@ -1746,6 +1746,27 @@ export const testBasicFormat = tc => {
   compare(users)
 }
 
+/**
+ * @param {t.TestCase} tc
+ */
+export const testFalsyFormats = tc => {
+  const { users, text0 } = init(tc, { users: 2 })
+  let delta
+  text0.observe(event => {
+    delta = event.delta
+  })
+  text0.insert(0, 'abcde', { falsy: false })
+  t.compare(text0.toDelta(), [{ insert: 'abcde', attributes: { falsy: false } }])
+  t.compare(delta, [{ insert: 'abcde', attributes: { falsy: false } }])
+  text0.format(1, 3, { falsy: true })
+  t.compare(text0.toDelta(), [{ insert: 'a', attributes: { falsy: false } }, { insert: 'bcd', attributes: { falsy: true } }, { insert: 'e', attributes: { falsy: false } }])
+  t.compare(delta, [{ retain: 1 }, { retain: 3, attributes: { falsy: true } }])
+  text0.format(2, 1, { falsy: false })
+  t.compare(text0.toDelta(), [{ insert: 'a', attributes: { falsy: false } }, { insert: 'b', attributes: { falsy: true } }, { insert: 'c', attributes: { falsy: false } }, { insert: 'd', attributes: { falsy: true } }, { insert: 'e', attributes: { falsy: false } }])
+  t.compare(delta, [{ retain: 2 }, { retain: 1, attributes: { falsy: false } }])
+  compare(users)
+}
+
 /**
  * @param {t.TestCase} _tc
  */