diff -u b/core/modules/taxonomy/src/Tests/TermTest.php b/core/modules/taxonomy/src/Tests/TermTest.php
--- b/core/modules/taxonomy/src/Tests/TermTest.php
+++ b/core/modules/taxonomy/src/Tests/TermTest.php
@@ -81,7 +81,7 @@
   /**
    * Test terms in a single and multiple hierarchy.
    */
-  function ptestTaxonomyTermHierarchy() {
+  function testTaxonomyTermHierarchy() {
     // Create two taxonomy terms.
     $term1 = $this->createTerm($this->vocabulary);
     $term2 = $this->createTerm($this->vocabulary);
@@ -121,7 +121,7 @@
   /**
    * Tests that many terms with parents show on each page
    */
-  function ptestTaxonomyTermChildTerms() {
+  function testTaxonomyTermChildTerms() {
     // Set limit to 10 terms per page. Set variable to 9 so 10 terms appear.
     $this->config('taxonomy.settings')->set('terms_per_page_admin', '9')->save();
     $term1 = $this->createTerm($this->vocabulary);
@@ -176,7 +176,7 @@
    *
    * Save & edit a node and assert that taxonomy terms are saved/loaded properly.
    */
-  function ptestTaxonomyNode() {
+  function testTaxonomyNode() {
     // Create two taxonomy terms.
     $term1 = $this->createTerm($this->vocabulary);
     $term2 = $this->createTerm($this->vocabulary);
@@ -215,7 +215,7 @@
   /**
    * Test term creation with a free-tagging vocabulary from the node form.
    */
-  function ptestNodeTermCreationAndDeletion() {
+  function testNodeTermCreationAndDeletion() {
     // Enable tags in the vocabulary.
     $field = $this->field;
     entity_get_form_display($field->getTargetEntityTypeId(), $field->getTargetBundle(), 'default')
@@ -303,7 +303,7 @@
   /**
    * Save, edit and delete a term using the user interface.
    */
-  function ptestTermInterface() {
+  function testTermInterface() {
     \Drupal::service('module_installer')->install(array('views'));
     $edit = array(
       'name[0][value]' => $this->randomMachineName(12),
@@ -380,7 +380,7 @@
   /**
    * Save, edit and delete a term using the user interface.
    */
-  function ptestTermReorder() {
+  function testTermReorder() {
     $this->createTerm($this->vocabulary);
     $this->createTerm($this->vocabulary);
     $this->createTerm($this->vocabulary);
@@ -437,7 +437,7 @@
   /**
    * Test saving a term with multiple parents through the UI.
    */
-  function ptestTermMultipleParentsInterface() {
+  function testTermMultipleParentsInterface() {
     // Add a new term to the vocabulary so that we can have multiple parents.
     $parent = $this->createTerm($this->vocabulary);
 
@@ -526,7 +526,7 @@
   /**
    * Tests that editing and saving a node with no changes works correctly.
    */
-  function ptestReSavingTags() {
+  function testReSavingTags() {
     // Enable tags in the vocabulary.
     $field = $this->field;
     entity_get_form_display($field->getTargetEntityTypeId(), $field->getTargetBundle(), 'default')