MAGETWO-91465: Once integer is stored for State/Province field, it can not be changed to alphanumeric

Author: rganin

app/code/Magento/Customer/Model/Address/Validator/Country.php

@@ -95,8 +95,8 @@ private function validateRegion(AbstractAddress $address)
         $countryId = $address->getCountryId();
         $countryModel = $address->getCountryModel();
         $regionCollection = $countryModel->getRegionCollection();
-        $region = $address->getData('region');
-        $regionId = (string)$address->getData('region_id');
+        $region = $address->getRegion();
+        $regionId = (string)$address->getRegionId();
         $allowedRegions = $regionCollection->getAllIds();
         $isRegionRequired = $this->directoryData->isRegionRequired($countryId);
         if ($isRegionRequired && empty($allowedRegions) && !\Zend_Validate::is($region, 'NotEmpty')) {

app/code/Magento/Customer/Test/Unit/Model/Address/Validator/CountryTest.php

@@ -161,8 +161,14 @@ public function validateDataProvider()
             'region_id2' => [
                 array_merge($data, ['country_id' => $countryId, 'region_id' => 2]),
                 [$countryId++],
-                [1],
                 [],
+                [],
+            ],
+            'region_id3' => [
+                array_merge($data, ['country_id' => $countryId, 'region_id' => 2]),
+                [$countryId++],
+                [1, 3],
+                ['Invalid value of "2" provided for the regionId field.'],
             ],
             'validated' => [
                 array_merge($data, ['country_id' => $countryId]),

app/code/Magento/Ui/view/base/web/js/lib/validation/rules.js

@@ -757,7 +757,7 @@ define([
         ],
         'validate-not-number-first': [
             function (value) {
-                return utils.isEmptyNoTrim(value) || /^[^0-9].*$/.test(value);
+                return utils.isEmptyNoTrim(value) || /^[^0-9-\.].*$/.test(value);
             },
             $.mage.__('First character must be letter.')//eslint-disable-line max-len
         ],