No message is displayed after View is deleted

Good observation!

This should be solvable by a novice. Hint: The file is core/modules/views_ui/lib/Drupal/views_ui/ViewDeleteFormController.php

Hopefully problem solved.
I have added a message with drupal_set_message() function in method submit() from class ViewDeleteFormController.

Confirmed. When a view is deleted, now provided with a response message: View [view_name] deleted

I'm not sure if this patch needed to include a test, so I think I pre-empted the 'RTBC' and thus setting back to 'Needs review'.

Yeah let's better add one.

Patch applied cleanly.Now it does displays a message when a View is deleted.

wrote test. needs review..

write message and wrote test in Drupal\views_ui\Tests\ViewEditTest
set message View deleted when a view is deleted
needs review

+++ b/core/modules/views_ui/lib/Drupal/views_ui/Tests/ViewEditTest.php
@@ -41,7 +41,7 @@ public function testDeleteLink() {
+    $this->assertText(t('View %name deleted', array('%name' => $view->label())));

note: the variable view is not available at that point. you first have to load it, see some lines below.

View loaded before the use.

This doesn't work. The test and the end explicitly ensures that deleting the view works. If you have still the old views object in memory this test will fail.

Tests: take 2 view objects ... one before click Delete and the other after.

replace assertText with assertRaw in ViewEditTest.php

+++ b/core/modules/views_ui/lib/Drupal/views_ui/Tests/ViewEditTest.php
@@ -38,12 +38,14 @@ public function testDeleteLink() {
-    $this->assertUrl('admin/structure/views');
     $view = $this->container->get('entity.manager')->getStorageController('view')->load('test_view');
+    $this->assertUrl('admin/structure/views');

These changes look out of scope?

Other than that, looks RTBC to me :)

Great job!

fixed #27 problems...hope it works fine
waiting for you review

hopefully...it works now

assuming green.

Nice UX fix, and tests too! :)

Committed and pushed to 8.x. Thanks!