.../block/lib/Drupal/block/Tests/Views/DisplayBlockTest.php  |   10 +++++-----
 core/modules/views/lib/Drupal/views/Tests/ViewAjaxTest.php   |   10 +---------
 .../views_ui/lib/Drupal/views_ui/Tests/ViewEditTest.php      |    2 +-
 3 files changed, 7 insertions(+), 15 deletions(-)

diff --git a/core/modules/block/lib/Drupal/block/Tests/Views/DisplayBlockTest.php b/core/modules/block/lib/Drupal/block/Tests/Views/DisplayBlockTest.php
index 85f0ace..ba51073 100644
--- a/core/modules/block/lib/Drupal/block/Tests/Views/DisplayBlockTest.php
+++ b/core/modules/block/lib/Drupal/block/Tests/Views/DisplayBlockTest.php
@@ -61,7 +61,7 @@ public function testBlockCategory() {
     $edit['description'] = $this->randomString();
     $edit['block[create]'] = TRUE;
     $edit['block[style][row_plugin]'] = 'fields';
-    $this->drupalPost('admin/structure/views/add', $edit, t('Save and edit'));
+    $this->drupalPostForm('admin/structure/views/add', $edit, t('Save and edit'));
 
     // Test that the block was given a default category corresponding to its
     // base table.
@@ -76,7 +76,7 @@ public function testBlockCategory() {
     $this->assertTrue(!empty($elements), 'The test block appears in the category for its base table.');
 
     // Clone the block before changing the category.
-    $this->drupalPost('admin/structure/views/view/' . $edit['id'] . '/edit/block_1', array(), t('Clone @display_title', array('@display_title' => 'Block')));
+    $this->drupalPostForm('admin/structure/views/view/' . $edit['id'] . '/edit/block_1', array(), t('Clone @display_title', array('@display_title' => 'Block')));
     $this->assertUrl('admin/structure/views/view/' . $edit['id'] . '/edit/block_2');
 
     // Change the block category to a random string.
@@ -86,13 +86,13 @@ public function testBlockCategory() {
     $this->assertTrue(!empty($link));
     $this->clickLink($label);
     $category = $this->randomString();
-    $this->drupalPost(NULL, array('block_category' => $category), t('Apply'));
+    $this->drupalPostForm(NULL, array('block_category' => $category), t('Apply'));
 
     // Clone the block after changing the category.
-    $this->drupalPost(NULL, array(), t('Clone @display_title', array('@display_title' => 'Block')));
+    $this->drupalPostForm(NULL, array(), t('Clone @display_title', array('@display_title' => 'Block')));
     $this->assertUrl('admin/structure/views/view/' . $edit['id'] . '/edit/block_3');
 
-    $this->drupalPost(NULL, array(), t('Save'));
+    $this->drupalPostForm(NULL, array(), t('Save'));
 
     // Test that the blocks are listed under the correct categories.
     $category_id = 'edit-' . drupal_html_id(String::checkPlain($category));
diff --git a/core/modules/views/lib/Drupal/views/Tests/ViewAjaxTest.php b/core/modules/views/lib/Drupal/views/Tests/ViewAjaxTest.php
index 68fdaae..ef7bb0d 100644
--- a/core/modules/views/lib/Drupal/views/Tests/ViewAjaxTest.php
+++ b/core/modules/views/lib/Drupal/views/Tests/ViewAjaxTest.php
@@ -45,15 +45,7 @@ public function testAjaxView() {
     $data['view_display_id'] = 'test_ajax_view';
 
     $post = 'view_name=test_ajax_view&view_display_id=page_1';
-    $response = $this->curlExec(array(
-      CURLOPT_URL => url('views/ajax', array('absolute' => TRUE)),
-      CURLOPT_POST => TRUE,
-      CURLOPT_POSTFIELDS => $post,
-      CURLOPT_HTTPHEADER => array(
-        'Accept: application/json',
-        'Content-Type: application/x-www-form-urlencoded',
-      ),
-    ));
+    $response = $this->drupalPost('views/ajax', 'application/json', $post);
     $data = Json::decode($response);
 
     // Ensure that the view insert command is part of the result.
diff --git a/core/modules/views_ui/lib/Drupal/views_ui/Tests/ViewEditTest.php b/core/modules/views_ui/lib/Drupal/views_ui/Tests/ViewEditTest.php
index db74ae0..fe12b2b 100644
--- a/core/modules/views_ui/lib/Drupal/views_ui/Tests/ViewEditTest.php
+++ b/core/modules/views_ui/lib/Drupal/views_ui/Tests/ViewEditTest.php
@@ -38,7 +38,7 @@ public function testDeleteLink() {
 
     $this->clickLink(t('Delete view'));
     $this->assertUrl('admin/structure/views/view/test_view/delete');
-    $this->drupalPost(NULL, array(), t('Delete'));
+    $this->drupalPostForm(NULL, array(), t('Delete'));
 
     $this->assertUrl('admin/structure/views');
     $view = $this->container->get('plugin.manager.entity')->getStorageController('view')->load('test_view');