fixed all tests & proper diff /w attribution in nested deltas

tests/attribution.tests.js

@@ -100,11 +100,10 @@ export const testYdocDiff = () => {
   ydocUpdated.getMap('map').get('nested').insert(0, [1])
   // @todo add custom attribution
   const d = Y.diffDocsToDelta(ydocStart, ydocUpdated)
+  console.log('calculated diff', d.toJSON())
   t.compare(d, delta.create()
-    .update('text', delta.create().retain(5).insert('world'))
-    .update('array', delta.create().retain(1).insert(['x']))
-    .update('map', delta.create().set('newk', 42).update('nested', delta.create().insert([1])))
+    .update('text', delta.create().retain(5).insert(' world', null, { insert: [] }))
+    .update('array', delta.create().retain(1).insert(['x'], null, { insert: [] }))
+    .update('map', delta.create().set('newk', 42, { insert: [] }).update('nested', delta.create().insert([1], null, { insert: [] })))
   )
-  console.log(d.toJSON())
-  debugger
 }

tests/y-map.tests.js

@@ -37,6 +37,37 @@ export const testIterators = _tc => {
   console.log(vals, entries, keys)
 }
 
+export const testNestedMapEvent = () => {
+  const ydoc = new Y.Doc()
+  const ymap = ydoc.getMap()
+  const ymapNested = ymap.set('nested', new Y.Map())
+  let called = 0
+  ymap.observeDeep((events, tr) => {
+    const event = events.find(event => event.target === ymap) || new Y.YEvent(ymap, tr, new Set())
+    const d = event.deltaDeep
+    called++
+    t.compare(d, delta.create().update('nested', delta.create().set('k', 'v')))
+  })
+  ymapNested.set('k', 'v')
+  t.assert(called === 1)
+}
+
+export const testNestedMapEvent2 = () => {
+  const ydoc = new Y.Doc()
+  const yarr = ydoc.getArray()
+  const ymapNested = new Y.Map()
+  yarr.insert(0, [ymapNested])
+  let called = 0
+  yarr.observeDeep((events, tr) => {
+    const event = events.find(event => event.target === yarr) || new Y.YEvent(yarr, tr, new Set())
+    const d = event.deltaDeep
+    called++
+    t.compare(d, delta.create().modify(delta.create().set('k', 'v')))
+  })
+  ymapNested.set('k', 'v')
+  t.assert(called === 1)
+}
+
 /**
  * Computing event changes after transaction should result in an error. See yjs#539
  *