Exposed filters get values from URL when Ajax is on

Closes #3121172

core/modules/views/tests/src/Unit/Controller/ViewAjaxControllerTest.php

@@ -260,6 +260,7 @@ public function testAjaxViewWithArguments() {
     $request->request->set('view_name', 'test_view');
     $request->request->set('view_display_id', 'page_1');
     $request->request->set('view_args', 'arg1/arg2');
+    $request->request->set('view_path', '/test-page');
 
     [$view, $executable] = $this->setupValidMocks();
     $executable->expects($this->once())
@@ -279,6 +280,7 @@ public function testAjaxViewWithEmptyArguments() {
     $request = new Request();
     $request->request->set('view_name', 'test_view');
     $request->request->set('view_display_id', 'page_1');
+    $request->request->set('view_path', '/test-page');
     // Simulate a request that has a second, empty argument.
     $request->request->set('view_args', 'arg1/');
 
@@ -301,6 +303,7 @@ public function testAjaxViewWithHtmlEntityArguments() {
     $request->request->set('view_name', 'test_view');
     $request->request->set('view_display_id', 'page_1');
     $request->request->set('view_args', 'arg1 & arg2/arg3');
+    $request->request->set('view_path', '/test-page');
 
     [$view, $executable] = $this->setupValidMocks();
     $executable->expects($this->once())
@@ -323,6 +326,7 @@ public function testAjaxViewWithPager() {
     $dom_id = $this->randomMachineName(20);
     $request->request->set('view_dom_id', $dom_id);
     $request->request->set('pager_element', '0');
+    $request->request->set('view_path', '/test-page');
 
     [$view, $executable] = $this->setupValidMocks();