snapshot of https://github.com/ueberdosis/hocuspocus.git @ cf3cfa355b4d3bb61c6b6c80071f71783e32470e (2026-09-15)

tests/transformer/TiptapTransformer.ts

@@ -0,0 +1,73 @@
+import test from 'ava'
+import { TiptapTransformer } from '@hocuspocus/transformer'
+
+test('transforms JSON to Y.Doc', async t => {
+  const json = {
+    type: 'doc',
+    content: [
+      {
+        type: 'paragraph',
+        content: [
+          {
+            type: 'text',
+            text: 'Example Text',
+          },
+        ],
+      },
+    ],
+  }
+
+  const ydoc = TiptapTransformer.toYdoc(json, 'content')
+
+  t.is(
+    ydoc.getXmlFragment('content').toJSON(),
+    '<paragraph>Example Text</paragraph>',
+  )
+})
+
+test('writes to the correct Y.Doc field', async t => {
+  const json = {
+    type: 'doc',
+    content: [
+      {
+        type: 'paragraph',
+        content: [
+          {
+            type: 'text',
+            text: 'Example Text',
+          },
+        ],
+      },
+    ],
+  }
+
+  const ydoc = TiptapTransformer.toYdoc(json, 'mySuperCustomField')
+
+  t.is(
+    ydoc.getXmlFragment('mySuperCustomField').toJSON(),
+    '<paragraph>Example Text</paragraph>',
+  )
+})
+
+test('throws a helpful error when the document is empty', async t => {
+  const invalidJson = null
+
+  const error = t.throws(() => {
+    TiptapTransformer.toYdoc(invalidJson, 'content')
+  }, { instanceOf: Error })
+
+  t.truthy(error?.message.includes('ProseMirror-compatible JSON'))
+})
+
+test('throws a helpful error when the document is invalid', async t => {
+  const invalidJson = {
+    type: 'invalidType',
+    content: [],
+  }
+
+  const error = t.throws(() => {
+    TiptapTransformer.toYdoc(invalidJson, 'content')
+  }, { instanceOf: Error })
+
+  t.truthy(error?.message.includes('Unknown node type: invalidType'))
+})