RELATIONERROR improve test

bt5/erp5_web_renderjs_ui_test/PathTemplateItem/portal_tests/renderjs_ui_relation_field_zuite/testRelationFieldBackslash.zpt

@@ -77,11 +77,37 @@
   <td></td>
 </tr>
 
-<!-- Check we can continue to work -->
+<!-- Check we can continue to work by selecting an existing category and save -->
 <tr>
   <td>type</td>
   <td>//input[@name="field_my_foo_category_title"]</td>
-  <td>Something to type</td>
+  <td>Quantity</td>
+</tr>
+<tr>
+  <td>fireEvent</td>
+  <td>//input[@name='field_my_foo_category_title']</td>
+  <td>input</td>
+</tr>
+<tr>
+  <td>waitForElementPresent</td>
+  <td>//li[@data-relative-url='portal_categories/divergence_scope/quantity']</td>
+  <td></td>
+</tr>
+<tr>
+  <td>fireEvent</td>
+  <td>//input[@name='field_my_foo_category_title']</td>
+  <td>blur</td>
+</tr>
+<tr>
+  <td>click</td>
+  <td>//li[@data-relative-url='portal_categories/divergence_scope/quantity']</td>
+  <td></td>
+</tr>
+<tal:block metal:use-macro="here/Zuite_CommonTemplateForRenderjsUi/macros/save" />
+<tr>
+  <td>verifyValue</td>
+  <td>//input[@name="field_my_foo_category_title"]</td>
+  <td>Quantity</td>
 </tr>
 
 </tbody></table>