diff -u b/core/modules/image/src/Tests/ImageFieldValidateTest.php b/core/modules/image/src/Tests/ImageFieldValidateTest.php
--- b/core/modules/image/src/Tests/ImageFieldValidateTest.php
+++ b/core/modules/image/src/Tests/ImageFieldValidateTest.php
@@ -16,7 +16,7 @@
   /**
    * Test min/max resolution settings.
    */
-  function _testResolution() {
+  function testResolution() {
     $field_name = strtolower($this->randomName());
     $min_resolution = 50;
     $max_resolution = 100;
@@ -84,7 +84,10 @@
     $instance->settings['title_field_required'] = 0;
     $instance->save();
 
-    $this->drupalPostForm('node/add/article', array(), t('Save and publish'));
+    $edit = array(
+      'title[0][value]' => $this->randomName(),
+    );
+    $this->drupalPostForm('node/add/article', $edit, t('Save and publish'));
 
     $this->assertNoText(t('Alternate text field is required.'), 'Node save not failed when alt text not required was set and alt text was left empty.');
     $this->assertNoText(t('Title field is required.'), 'Node save not failed when title text not required was set and title text was left empty.');