Fix insert fragment multiple nested (#309)

* Add fixture for insertFragmentAtRange with multiple blocks in nested blocks

* Small fix for the fixture's `expected` output

* Rebase on master (0.14.x)

Moved tests to new appropriate location

* Output now expects that fragment are merged to adjacent blocks

* fix insert fragment for multiple children

lib/transforms/at-range.js

@@ -304,7 +304,7 @@ export function insertFragmentAtRange(transform, range, fragment) {
     fragment = fragment.removeDescendant(lonelyChild)
 
     fragment.nodes.forEach((node, i) => {
-      const newIndex = startIndex + i + 2
+      const newIndex = startIndex + i + 1
       transform.insertNodeByKey(parent.key, newIndex, node)
     })
   }

test/transforms/fixtures/at-range/insert-fragment-at-range/fragment-multiple-blocks-in-nested-block/fragment.yaml

@@ -0,0 +1,14 @@
+
+nodes:
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        ranges:
+          - text: fragment one
+  - kind: block
+    type: paragraph
+    nodes:
+      - kind: text
+        ranges:
+          - text: fragment two

test/transforms/fixtures/at-range/insert-fragment-at-range/fragment-multiple-blocks-in-nested-block/index.js

@@ -0,0 +1,25 @@
+
+import path from 'path'
+import readMetadata from 'read-metadata'
+import { Raw } from '../../../../../..'
+
+export default function (state) {
+  const file = path.resolve(__dirname, 'fragment.yaml')
+  const raw = readMetadata.sync(file)
+  const fragment = Raw.deserialize(raw, { terse: true }).document
+
+  const { document, selection } = state
+  const texts = document.getTexts()
+  const first = texts.first()
+  const range = selection.merge({
+    anchorKey: first.key,
+    anchorOffset: 2,
+    focusKey: first.key,
+    focusOffset: 2
+  })
+
+  return state
+    .transform()
+    .insertFragmentAtRange(range, fragment)
+    .apply()
+}

test/transforms/fixtures/at-range/insert-fragment-at-range/fragment-multiple-blocks-in-nested-block/input.yaml

@@ -0,0 +1,17 @@
+
+nodes:
+  - kind: block
+    type: list-item
+    nodes:
+      - kind: block
+        type: paragraph
+        nodes:
+          - kind: text
+            ranges:
+              - text: first
+      - kind: block
+        type: paragraph
+        nodes:
+          - kind: text
+            ranges:
+              - text: second

test/transforms/fixtures/at-range/insert-fragment-at-range/fragment-multiple-blocks-in-nested-block/output.yaml

@@ -0,0 +1,20 @@
+
+nodes:
+  - kind: block
+    type: list-item
+    nodes:
+      - kind: block
+        type: paragraph
+        nodes:
+          - kind: text
+            text: fifragment one
+      - kind: block
+        type: paragraph
+        nodes:
+          - kind: text
+            text: fragment tworst
+      - kind: block
+        type: paragraph
+        nodes:
+          - kind: text
+            text: second