diff --git a/tests/phpunit/CRM/Activity/BAO/ActivityTest.php b/tests/phpunit/CRM/Activity/BAO/ActivityTest.php
index 30c927b7f5b0..6e0a62a6abc7 100644
--- a/tests/phpunit/CRM/Activity/BAO/ActivityTest.php
+++ b/tests/phpunit/CRM/Activity/BAO/ActivityTest.php
@@ -17,7 +17,7 @@ class CRM_Activity_BAO_ActivityTest extends CiviUnitTestCase {
    *
    * @throws \CiviCRM_API3_Exception
    */
-  public function setUp() {
+  public function setUp():void {
     parent::setUp();
     $this->prepareForACLs();
     CRM_Core_Config::singleton()->userPermissionClass->permissions = ['view all contacts', 'access CiviCRM'];
diff --git a/tests/phpunit/CRM/Activity/Form/ActivityTest.php b/tests/phpunit/CRM/Activity/Form/ActivityTest.php
index 8e603a500dc2..23969a1216c9 100644
--- a/tests/phpunit/CRM/Activity/Form/ActivityTest.php
+++ b/tests/phpunit/CRM/Activity/Form/ActivityTest.php
@@ -8,7 +8,7 @@
  */
 class CRM_Activity_Form_ActivityTest extends CiviUnitTestCase {
 
-  public function setUp() {
+  public function setUp():void {
     parent::setUp();
     $this->assignee1 = $this->individualCreate([
       'first_name' => 'testassignee1',
diff --git a/tests/phpunit/CRM/Case/BAO/CaseTypeForkTest.php b/tests/phpunit/CRM/Case/BAO/CaseTypeForkTest.php
index 82455b571c1a..e77dbda7d466 100644
--- a/tests/phpunit/CRM/Case/BAO/CaseTypeForkTest.php
+++ b/tests/phpunit/CRM/Case/BAO/CaseTypeForkTest.php
@@ -7,7 +7,7 @@
  */
 class CRM_Case_BAO_CaseTypeForkTest extends CiviCaseTestCase {
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     CRM_Core_ManagedEntities::singleton(TRUE)->reconcile();
   }
diff --git a/tests/phpunit/CRM/Case/Form/CustomDataTest.php b/tests/phpunit/CRM/Case/Form/CustomDataTest.php
index 949964169388..1e276558ef38 100644
--- a/tests/phpunit/CRM/Case/Form/CustomDataTest.php
+++ b/tests/phpunit/CRM/Case/Form/CustomDataTest.php
@@ -9,7 +9,7 @@ class CRM_Case_Form_CustomDataTest extends CiviCaseTestCase {
 
   protected $custom_group;
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->custom_group = $this->customGroupCreate(['extends' => 'Case']);
     $this->custom_group = $this->custom_group['values'][$this->custom_group['id']];
diff --git a/tests/phpunit/CRM/Case/Form/SearchTest.php b/tests/phpunit/CRM/Case/Form/SearchTest.php
index 42c499d2aa5f..2266f1b3b156 100644
--- a/tests/phpunit/CRM/Case/Form/SearchTest.php
+++ b/tests/phpunit/CRM/Case/Form/SearchTest.php
@@ -7,7 +7,7 @@
  */
 class CRM_Case_Form_SearchTest extends CiviCaseTestCase {
 
-  public function setUp() {
+  public function setUp():void {
     parent::setUp();
     $this->quickCleanup(['civicrm_case_contact', 'civicrm_case', 'civicrm_contact']);
   }
diff --git a/tests/phpunit/CRM/Contribute/BAO/ContributionTypeTest.php b/tests/phpunit/CRM/Contribute/BAO/ContributionTypeTest.php
index 976e06cfcf21..aca4e92b5f44 100644
--- a/tests/phpunit/CRM/Contribute/BAO/ContributionTypeTest.php
+++ b/tests/phpunit/CRM/Contribute/BAO/ContributionTypeTest.php
@@ -15,7 +15,7 @@
  */
 class CRM_Contribute_BAO_ContributionTypeTest extends CiviUnitTestCase {
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->organizationCreate();
   }
diff --git a/tests/phpunit/CRM/Contribute/BAO/ProductTest.php b/tests/phpunit/CRM/Contribute/BAO/ProductTest.php
index 90d416a955ae..f242ed60858f 100644
--- a/tests/phpunit/CRM/Contribute/BAO/ProductTest.php
+++ b/tests/phpunit/CRM/Contribute/BAO/ProductTest.php
@@ -15,10 +15,6 @@
  */
 class CRM_Contribute_BAO_ProductTest extends CiviUnitTestCase {
 
-  public function setUp() {
-    parent::setUp();
-  }
-
   /**
    * Check method add()
    */
diff --git a/tests/phpunit/CRM/Extension/Manager/ModuleTest.php b/tests/phpunit/CRM/Extension/Manager/ModuleTest.php
index 847337cdde15..53e12840c40a 100644
--- a/tests/phpunit/CRM/Extension/Manager/ModuleTest.php
+++ b/tests/phpunit/CRM/Extension/Manager/ModuleTest.php
@@ -6,7 +6,7 @@
  */
 class CRM_Extension_Manager_ModuleTest extends CiviUnitTestCase {
 
-  public function setUp() {
+  public function setUp():void {
     parent::setUp();
     // $query = "INSERT INTO civicrm_domain ( name, version ) VALUES ( 'domain', 3 )";
     // $result = CRM_Core_DAO::executeQuery($query);
diff --git a/tests/phpunit/CRM/Extension/Manager/ReportTest.php b/tests/phpunit/CRM/Extension/Manager/ReportTest.php
index 110b505ce99b..be7029c65ff6 100644
--- a/tests/phpunit/CRM/Extension/Manager/ReportTest.php
+++ b/tests/phpunit/CRM/Extension/Manager/ReportTest.php
@@ -6,7 +6,7 @@
  */
 class CRM_Extension_Manager_ReportTest extends CiviUnitTestCase {
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     //if (class_exists('test_extension_manager_reporttest')) {
     //  test_extension_manager_reporttest::$counts = array();
@@ -17,10 +17,6 @@ public function setUp() {
     ]);
   }
 
-  public function tearDown() {
-    parent::tearDown();
-  }
-
   /**
    * Install an extension with a valid type name.
    */
diff --git a/tests/phpunit/CRM/Extension/ManagerTest.php b/tests/phpunit/CRM/Extension/ManagerTest.php
index 52396f41ba57..ea1c71a53baa 100644
--- a/tests/phpunit/CRM/Extension/ManagerTest.php
+++ b/tests/phpunit/CRM/Extension/ManagerTest.php
@@ -17,16 +17,12 @@ class CRM_Extension_ManagerTest extends CiviUnitTestCase {
   const TESTING_TYPE = 'report';
   const OTHER_TESTING_TYPE = 'module';
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     list ($this->basedir, $this->container) = $this->_createContainer();
     $this->mapper = new CRM_Extension_Mapper($this->container);
   }
 
-  public function tearDown() {
-    parent::tearDown();
-  }
-
   /**
    * Install an extension with an invalid type name.
    *
diff --git a/tests/phpunit/CRM/Extension/MapperTest.php b/tests/phpunit/CRM/Extension/MapperTest.php
index da9ba2c61eaf..1f7a955c3e56 100644
--- a/tests/phpunit/CRM/Extension/MapperTest.php
+++ b/tests/phpunit/CRM/Extension/MapperTest.php
@@ -36,7 +36,7 @@ class CRM_Extension_MapperTest extends CiviUnitTestCase {
    */
   protected $mapperWithSlash;
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     list ($this->basedir, $this->container) = $this->_createContainer();
     $this->mapper = new CRM_Extension_Mapper($this->container);
@@ -45,10 +45,6 @@ public function setUp() {
     $this->mapperWithSlash = new CRM_Extension_Mapper($this->containerWithSlash);
   }
 
-  public function tearDown() {
-    parent::tearDown();
-  }
-
   public function testClassToKey() {
     $this->assertEquals("test.foo.bar", $this->mapper->classToKey('test_foo_bar'));
   }
diff --git a/tests/phpunit/CRM/Pledge/BAO/PledgeBlockTest.php b/tests/phpunit/CRM/Pledge/BAO/PledgeBlockTest.php
index 6832bb8965c2..6144b7558d81 100644
--- a/tests/phpunit/CRM/Pledge/BAO/PledgeBlockTest.php
+++ b/tests/phpunit/CRM/Pledge/BAO/PledgeBlockTest.php
@@ -21,19 +21,12 @@ class CRM_Pledge_BAO_PledgeBlockTest extends CiviUnitTestCase {
    * Sets up the fixture, for example, opens a network connection.
    * This method is called before a test is executed.
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
     $contributionPage = $this->contributionPageCreate();
     $this->_contributionPageId = $contributionPage['id'];
   }
 
-  /**
-   * Tears down the fixture, for example, closes a network connection.
-   * This method is called after a test is executed.
-   */
-  protected function tearDown() {
-  }
-
   /**
    *  create() and deletepledgeblock() method
    */
diff --git a/tests/phpunit/CRM/Pledge/BAO/PledgePaymentTest.php b/tests/phpunit/CRM/Pledge/BAO/PledgePaymentTest.php
index 811ae2614498..a5413a0288dd 100644
--- a/tests/phpunit/CRM/Pledge/BAO/PledgePaymentTest.php
+++ b/tests/phpunit/CRM/Pledge/BAO/PledgePaymentTest.php
@@ -17,21 +17,6 @@
  */
 class CRM_Pledge_BAO_PledgePaymentTest extends CiviUnitTestCase {
 
-  /**
-   * Sets up the fixture, for example, opens a network connection.
-   * This method is called before a test is executed.
-   */
-  protected function setUp() {
-    parent::setUp();
-  }
-
-  /**
-   * Tears down the fixture, for example, closes a network connection.
-   * This method is called after a test is executed.
-   */
-  protected function tearDown() {
-  }
-
   /**
    *  Test for Add/Update Pledge Payment.
    */
diff --git a/tests/phpunit/CRM/Pledge/BAO/PledgeTest.php b/tests/phpunit/CRM/Pledge/BAO/PledgeTest.php
index 536f24afadf5..182ee91b7c2e 100644
--- a/tests/phpunit/CRM/Pledge/BAO/PledgeTest.php
+++ b/tests/phpunit/CRM/Pledge/BAO/PledgeTest.php
@@ -23,7 +23,7 @@ class CRM_Pledge_BAO_PledgeTest extends CiviUnitTestCase {
    *
    * @throws \CiviCRM_API3_Exception
    */
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
     $this->ids['Contact'][0] = $this->individualCreate();
     $this->_params = [
@@ -43,13 +43,6 @@ protected function setUp() {
     ];
   }
 
-  /**
-   * Tears down the fixture, for example, closes a network connection.
-   * This method is called after a test is executed.
-   */
-  protected function tearDown() {
-  }
-
   /**
    *  Test for Add/Update Pledge.
    *
diff --git a/tests/phpunit/CRM/Price/BAO/PriceFieldValueTest.php b/tests/phpunit/CRM/Price/BAO/PriceFieldValueTest.php
index 23261b4c66bf..d229b86a00a7 100644
--- a/tests/phpunit/CRM/Price/BAO/PriceFieldValueTest.php
+++ b/tests/phpunit/CRM/Price/BAO/PriceFieldValueTest.php
@@ -15,19 +15,6 @@
  */
 class CRM_Price_BAO_PriceFieldValueTest extends CiviUnitTestCase {
 
-  /**
-   * Sets up the fixtures.
-   */
-  protected function setUp() {
-    parent::setUp();
-  }
-
-  /**
-   * Tears down the fixture.
-   */
-  protected function tearDown() {
-  }
-
   /**
    * Verifies visibility field exists and is configured as a pseudoconstant
    * referencing the 'visibility' option group.
diff --git a/tests/phpunit/CRM/Price/BAO/PriceSetTest.php b/tests/phpunit/CRM/Price/BAO/PriceSetTest.php
index 36e1e19285cc..c0c93e1aaa13 100644
--- a/tests/phpunit/CRM/Price/BAO/PriceSetTest.php
+++ b/tests/phpunit/CRM/Price/BAO/PriceSetTest.php
@@ -15,19 +15,6 @@
  */
 class CRM_Price_BAO_PriceSetTest extends CiviUnitTestCase {
 
-  /**
-   * Sets up the fixtures.
-   */
-  protected function setUp() {
-    parent::setUp();
-  }
-
-  /**
-   * Tears down the fixture.
-   */
-  protected function tearDown() {
-  }
-
   /**
    * Test the correct amount level is returned for an event which is not presented as a price set event.
    *
diff --git a/tests/phpunit/CRM/Report/Form/ContactSummaryTest.php b/tests/phpunit/CRM/Report/Form/ContactSummaryTest.php
index 47f269e43b8b..83cc4cf686da 100644
--- a/tests/phpunit/CRM/Report/Form/ContactSummaryTest.php
+++ b/tests/phpunit/CRM/Report/Form/ContactSummaryTest.php
@@ -22,15 +22,11 @@ class CRM_Report_Form_ContactSummaryTest extends CiviReportTestCase {
     'civicrm_address',
   ];
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->quickCleanup($this->_tablesToTruncate);
   }
 
-  public function tearDown() {
-    parent::tearDown();
-  }
-
   /**
    * Ensure the new Odd/Event street number sort column works correctly
    */
diff --git a/tests/phpunit/CRM/Report/FormTest.php b/tests/phpunit/CRM/Report/FormTest.php
index 8ce39c5b99f6..a7712723d257 100644
--- a/tests/phpunit/CRM/Report/FormTest.php
+++ b/tests/phpunit/CRM/Report/FormTest.php
@@ -26,16 +26,6 @@
  */
 class CRM_Report_FormTest extends CiviUnitTestCase {
 
-  public function setUp() {
-    // There are only unit tests here at present, we can skip database loading.
-    return TRUE;
-  }
-
-  public function tearDown() {
-    // There are only unit tests here at present, we can skip database loading.
-    return TRUE;
-  }
-
   /**
    * Used by testGetFromTo
    */
diff --git a/tests/phpunit/CRM/Utils/Cache/SqlGroupTest.php b/tests/phpunit/CRM/Utils/Cache/SqlGroupTest.php
index 68d1ac325032..2bfdcae2456e 100644
--- a/tests/phpunit/CRM/Utils/Cache/SqlGroupTest.php
+++ b/tests/phpunit/CRM/Utils/Cache/SqlGroupTest.php
@@ -6,14 +6,6 @@
  */
 class CRM_Utils_Cache_SqlGroupTest extends CiviUnitTestCase {
 
-  public function setUp() {
-    parent::setUp();
-  }
-
-  public function tearDown() {
-    parent::tearDown();
-  }
-
   /**
    * Add and remove two items from the same cache instance.
    */
diff --git a/tests/phpunit/CRM/Utils/DateTest.php b/tests/phpunit/CRM/Utils/DateTest.php
index 65afb0384ae4..ac73ae3bb6ec 100644
--- a/tests/phpunit/CRM/Utils/DateTest.php
+++ b/tests/phpunit/CRM/Utils/DateTest.php
@@ -26,16 +26,6 @@
  */
 class CRM_Utils_DateTest extends CiviUnitTestCase {
 
-  public function setUp() {
-    // There are only unit tests here at present, we can skip database loading.
-    return TRUE;
-  }
-
-  public function tearDown() {
-    // There are only unit tests here at present, we can skip database loading.
-    return TRUE;
-  }
-
   /**
    * Used by testGetFromTo
    */
diff --git a/tests/phpunit/Civi/CCase/SequenceListenerTest.php b/tests/phpunit/Civi/CCase/SequenceListenerTest.php
index 1d3afb246e08..88759ebc4562 100644
--- a/tests/phpunit/Civi/CCase/SequenceListenerTest.php
+++ b/tests/phpunit/Civi/CCase/SequenceListenerTest.php
@@ -9,7 +9,7 @@
  */
 class SequenceListenerTest extends \CiviCaseTestCase {
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->_params = [
       'case_type' => $this->caseType,
diff --git a/tests/phpunit/CiviTest/CiviCaseTestCase.php b/tests/phpunit/CiviTest/CiviCaseTestCase.php
index 44b03ad3170f..f13ee024d47b 100644
--- a/tests/phpunit/CiviTest/CiviCaseTestCase.php
+++ b/tests/phpunit/CiviTest/CiviCaseTestCase.php
@@ -28,7 +28,7 @@ class CiviCaseTestCase extends CiviUnitTestCase {
 
   protected $_loggedInUser;
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // CRM-9404 - set-up is a bit cumbersome but had to put something in place to set up activity types & case types
@@ -110,7 +110,7 @@ public function setUp() {
    * Tears down the fixture, for example, closes a network connection.
    * This method is called after a test is executed.
    */
-  public function tearDown() {
+  public function tearDown(): void {
     $this->quickCleanup($this->tablesToTruncate, TRUE);
     $this->customDirectories(array('template_path' => FALSE));
     CRM_Case_XMLRepository::singleton(TRUE);
diff --git a/tests/phpunit/CiviTest/CiviReportTestCase.php b/tests/phpunit/CiviTest/CiviReportTestCase.php
index fca4ea43ad7c..d3f1e4adfd6e 100644
--- a/tests/phpunit/CiviTest/CiviReportTestCase.php
+++ b/tests/phpunit/CiviTest/CiviReportTestCase.php
@@ -14,12 +14,7 @@
  */
 class CiviReportTestCase extends CiviUnitTestCase {
 
-  public function setUp() {
-    parent::setUp();
-    $this->_sethtmlGlobals();
-  }
-
-  public function tearDown() {
+  public function tearDown(): void {
     // TODO Figure out how to automatically drop all temporary tables.
     // Note that MySQL doesn't provide a way to list them, so we would need
     // to keep track ourselves (eg CRM_Core_TemporaryTableManager) or reset
diff --git a/tests/phpunit/CiviTest/CiviUnitTestCase.php b/tests/phpunit/CiviTest/CiviUnitTestCase.php
index 1792a1c22961..8a78474af552 100644
--- a/tests/phpunit/CiviTest/CiviUnitTestCase.php
+++ b/tests/phpunit/CiviTest/CiviUnitTestCase.php
@@ -462,7 +462,7 @@ public function createDomainContacts() {
   /**
    *  Common teardown functions for all unit tests.
    */
-  protected function tearDown() {
+  protected function tearDown(): void {
     $this->_apiversion = 3;
     $this->resetLabels();
 
diff --git a/tests/phpunit/E2E/Cache/TieredTest.php b/tests/phpunit/E2E/Cache/TieredTest.php
index df3e8357b40b..a68900238ff3 100644
--- a/tests/phpunit/E2E/Cache/TieredTest.php
+++ b/tests/phpunit/E2E/Cache/TieredTest.php
@@ -27,7 +27,7 @@ class E2E_Cache_TieredTest extends E2E_Cache_CacheTestCase {
    */
   protected $b;
 
-  protected function tearDown() {
+  protected function tearDown(): void {
     if (function_exists('timecop_return')) {
       timecop_return();
     }
diff --git a/tests/phpunit/E2E/Cache/TwoInstancesTest.php b/tests/phpunit/E2E/Cache/TwoInstancesTest.php
index 875e692a0343..73e9f554df59 100644
--- a/tests/phpunit/E2E/Cache/TwoInstancesTest.php
+++ b/tests/phpunit/E2E/Cache/TwoInstancesTest.php
@@ -31,7 +31,7 @@ protected function setUp() {
     $this->a = $this->b = NULL;
   }
 
-  protected function tearDown() {
+  protected function tearDown(): void {
     parent::tearDown();
     if ($this->a) {
       $this->a->clear();
diff --git a/tests/phpunit/E2E/Core/PrevNextTest.php b/tests/phpunit/E2E/Core/PrevNextTest.php
index 7d0d944429e6..fb598f6e7eb3 100644
--- a/tests/phpunit/E2E/Core/PrevNextTest.php
+++ b/tests/phpunit/E2E/Core/PrevNextTest.php
@@ -38,7 +38,7 @@ protected function setUp() {
     );
   }
 
-  protected function tearDown() {
+  protected function tearDown(): void {
     \Civi::service('prevnext')->deleteItem(NULL, $this->cacheKey);
     \Civi::service('prevnext')->deleteItem(NULL, $this->cacheKeyB);
   }
diff --git a/tests/phpunit/E2E/Extern/CliRunnerTest.php b/tests/phpunit/E2E/Extern/CliRunnerTest.php
index 011707364797..db1bf239cbcf 100644
--- a/tests/phpunit/E2E/Extern/CliRunnerTest.php
+++ b/tests/phpunit/E2E/Extern/CliRunnerTest.php
@@ -23,7 +23,7 @@
  */
 class E2E_Extern_CliRunnerTest extends CiviEndToEndTestCase {
 
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
 
     foreach (['CIVI_CORE', 'CMS_ROOT', 'CMS_URL'] as $var) {
@@ -33,10 +33,6 @@ protected function setUp() {
     }
   }
 
-  protected function tearDown() {
-    parent::tearDown();
-  }
-
   /**
    * @return array
    *   Each case gives a name (eg "cv") and template for executing the command
diff --git a/tests/phpunit/E2E/Extern/RestTest.php b/tests/phpunit/E2E/Extern/RestTest.php
index 22fbaedd3f45..ed3aed7019bc 100644
--- a/tests/phpunit/E2E/Extern/RestTest.php
+++ b/tests/phpunit/E2E/Extern/RestTest.php
@@ -36,7 +36,7 @@ protected function assertAPIErrorCode($apiResult, $cmpvar, $prefix = '') {
     //$this->assertEquals($cmpvar, $apiResult['is_error'], $prefix . print_r($apiResult, TRUE));
   }
 
-  protected function setUp() {
+  protected function setUp(): void {
     parent::setUp();
 
     if (empty($GLOBALS['_CV']['CIVI_SITE_KEY'])) {
@@ -51,7 +51,7 @@ protected function getRestUrl() {
       ->getUrl('civicrm', 'extern/rest.php');
   }
 
-  protected function tearDown() {
+  protected function tearDown(): void {
     if (!empty($this->old_api_keys)) {
       foreach ($this->old_api_keys as $cid => $apiKey) {
         civicrm_api3('Contact', 'create', array(
diff --git a/tests/phpunit/api/v3/OptionGroupTest.php b/tests/phpunit/api/v3/OptionGroupTest.php
index 1a5272c2c2e4..daf2ff001258 100644
--- a/tests/phpunit/api/v3/OptionGroupTest.php
+++ b/tests/phpunit/api/v3/OptionGroupTest.php
@@ -20,7 +20,7 @@ class api_v3_OptionGroupTest extends CiviUnitTestCase {
 
   protected $_entity = 'OptionGroup';
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->useTransaction(TRUE);
     $this->_params = [
diff --git a/tests/phpunit/api/v3/OptionValueTest.php b/tests/phpunit/api/v3/OptionValueTest.php
index 623296a559d9..6641cde5ad7b 100644
--- a/tests/phpunit/api/v3/OptionValueTest.php
+++ b/tests/phpunit/api/v3/OptionValueTest.php
@@ -16,7 +16,7 @@
 class api_v3_OptionValueTest extends CiviUnitTestCase {
   protected $_apiversion = 3;
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->useTransaction(TRUE);
   }
diff --git a/tests/phpunit/api/v3/OrderTest.php b/tests/phpunit/api/v3/OrderTest.php
index d51e1c732e72..497d5bc3a053 100644
--- a/tests/phpunit/api/v3/OrderTest.php
+++ b/tests/phpunit/api/v3/OrderTest.php
@@ -27,7 +27,7 @@ class api_v3_OrderTest extends CiviUnitTestCase {
    *
    * @throws \CRM_Core_Exception
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $this->_apiversion = 3;
diff --git a/tests/phpunit/api/v3/ParticipantPaymentTest.php b/tests/phpunit/api/v3/ParticipantPaymentTest.php
index e040c69b8dda..2841eeb44a95 100644
--- a/tests/phpunit/api/v3/ParticipantPaymentTest.php
+++ b/tests/phpunit/api/v3/ParticipantPaymentTest.php
@@ -29,7 +29,7 @@ class api_v3_ParticipantPaymentTest extends CiviUnitTestCase {
   /**
    * Set up for tests.
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->useTransaction(TRUE);
     $event = $this->eventCreate(NULL);
diff --git a/tests/phpunit/api/v3/ProductTest.php b/tests/phpunit/api/v3/ProductTest.php
index 73d685cb8820..d68c3e9d2a75 100644
--- a/tests/phpunit/api/v3/ProductTest.php
+++ b/tests/phpunit/api/v3/ProductTest.php
@@ -19,7 +19,7 @@ class api_v3_ProductTest extends CiviUnitTestCase {
 
   protected $_entity = 'Product';
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->useTransaction();
     $this->_params = [
diff --git a/tests/phpunit/api/v3/SettingTest.php b/tests/phpunit/api/v3/SettingTest.php
index 427b2f1cee14..1bc407ee8258 100644
--- a/tests/phpunit/api/v3/SettingTest.php
+++ b/tests/phpunit/api/v3/SettingTest.php
@@ -29,7 +29,7 @@ class api_v3_SettingTest extends CiviUnitTestCase {
   protected $_domainID2;
   protected $_domainID3;
 
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $params = [
       'name' => __CLASS__ . 'Second Domain',