Be inclusive for selection in insertText

src/transforms/apply-operation.js

@@ -115,10 +115,10 @@ function insertText(state, operation) {
   document = document.updateDescendant(node)
 
   // Update the selection
-  if (startKey == node.key && startOffset > offset) {
+  if (startKey == node.key && startOffset >= offset) {
     selection = selection.moveStartOffset(text.length)
   }
-  if (endKey == node.key && endOffset > offset) {
+  if (endKey == node.key && endOffset >= offset) {
     selection = selection.moveEndOffset(text.length)
   }
 

test/transforms/fixtures/by-key/insert-text-by-key/selection-end/index.js

@@ -21,7 +21,9 @@ export default function (state) {
 
   assert.deepEqual(
     next.selection.toJS(),
-    nextSelection.toJS()
+    nextSelection.merge({
+      focusOffset: 6
+    }).toJS()
   )
 
   return next

test/transforms/fixtures/by-key/insert-text-by-key/selection-start/index.js

@@ -22,6 +22,7 @@ export default function (state) {
   assert.deepEqual(
     next.selection.toJS(),
     nextSelection.merge({
+      anchorOffset: 4,
       focusOffset: 6
     }).toJS()
   )