diff --git a/tests/src/FunctionalJavascript/CheckoutPaneTest.php b/tests/src/FunctionalJavascript/CheckoutPaneTest.php
index 7837751..eeaa5e4 100644
--- a/tests/src/FunctionalJavascript/CheckoutPaneTest.php
+++ b/tests/src/FunctionalJavascript/CheckoutPaneTest.php
@@ -446,6 +446,81 @@ class CheckoutPaneTest extends CommerceWebDriverTestBase {
   }
 
   /**
+   * Test for Flat Rate Per Item shipping cost updates.
+   *
+   * @covers \Drupal\commerce_shipping\EventSubscriber\OrderItemSubscriber
+   */
+  public function testRecalculatePerItem() {
+    $page = $this->getSession()->getPage();
+
+    $this->createEntity('commerce_shipping_method', [
+      'name' => 'Flat Rate Per Item',
+      'stores' => [$this->store->id()],
+      // Ensures this method is first in list and checked by default.
+      'weight' => -20,
+      'plugin' => [
+        'target_plugin_id' => 'flat_rate_per_item',
+        'target_plugin_configuration' => [
+          'rate_label' => 'Flat Rate Per Item',
+          'rate_amount' => [
+            'number' => '10.00',
+            'currency_code' => 'USD',
+          ],
+        ],
+      ],
+    ]);
+    // Add product to order and calculate shipping.
+    $this->drupalGet($this->firstProduct->toUrl()->toString());
+    $this->submitForm([], 'Add to cart');
+    $this->drupalGet('checkout/1');
+    $address = [
+      'given_name' => 'John',
+      'family_name' => 'Smith',
+      'address_line1' => '1098 Alta Ave',
+      'locality' => 'Mountain View',
+      'administrative_area' => 'CA',
+      'postal_code' => '94043',
+    ];
+    $address_prefix = 'shipping_information[shipping_profile][address][0][address]';
+    $page->fillField($address_prefix . '[country_code]', 'US');
+    $this->waitForAjaxToFinish();
+    foreach ($address as $property => $value) {
+      $page->fillField($address_prefix . '[' . $property . ']', $value);
+    }
+    $page->findButton('Recalculate shipping')->click();
+    $this->waitForAjaxToFinish();
+    $this->submitForm([
+      'payment_information[add_payment_method][payment_details][number]' => '4111111111111111',
+      'payment_information[add_payment_method][payment_details][expiration][month]' => '02',
+      'payment_information[add_payment_method][payment_details][expiration][year]' => '2020',
+      'payment_information[add_payment_method][payment_details][security_code]' => '123',
+      'payment_information[add_payment_method][billing_information][address][0][address][given_name]' => 'Johnny',
+      'payment_information[add_payment_method][billing_information][address][0][address][family_name]' => 'Appleseed',
+      'payment_information[add_payment_method][billing_information][address][0][address][address_line1]' => '123 New York Drive',
+      'payment_information[add_payment_method][billing_information][address][0][address][locality]' => 'New York City',
+      'payment_information[add_payment_method][billing_information][address][0][address][administrative_area]' => 'NY',
+      'payment_information[add_payment_method][billing_information][address][0][address][postal_code]' => '10001',
+    ], 'Continue to review');
+    $this->assertSession()->pageTextContains('Shipping $10.00');
+
+    // Test whether the shipping amount gets updated.
+    $this->drupalGet('/cart');
+    $page->fillField('edit_quantity[0]', 5);
+    $page->findButton('Update cart')->click();
+    $this->assertSession()->pageTextContains('Shipping $50.00');
+
+    $this->drupalGet('checkout/1');
+    $this->assertSession()->pageTextContains('Shipping $50.00');
+
+    $page->findButton('Recalculate shipping')->click();
+    $this->waitForAjaxToFinish();
+    $this->assertSession()->pageTextContains('Shipping $50.00');
+
+    $page->findButton('Continue to review')->click();
+    $this->assertSession()->pageTextContains('Shipping $50.00');
+  }
+
+  /**
    * Asserts that a select field has all of the provided options.
    *
    * Core only has assertOption(), this helper decreases the number of needed