Drupal Rector.

modules/islandora_audio/tests/src/Functional/GenerateAudioDerivativeTest.php

@@ -68,7 +68,8 @@ class GenerateAudioDerivativeTest extends GenerateDerivativeTestBase {
       'field_media_of[0][target_id]' => 'Test Node',
       'field_tags[0][target_id]' => 'Preservation Master',
     ];
-    $this->drupalPostForm('media/add/' . $this->testMediaType->id(), $values, $this->t('Save'));
+    $this->drupalGet('media/add/' . $this->testMediaType->id());
+    $this->submitForm($values, $this->t('Save'));
 
     $expected = [
       'source_uri' => 'test_file.txt',

modules/islandora_breadcrumbs/tests/src/Functional/BreadcrumbsTest.php

@@ -20,7 +20,7 @@ class BreadcrumbsTest extends IslandoraFunctionalTestBase {
    *
    * @var array
    */
-  public static $modules = [
+  protected static $modules = [
     'islandora_breadcrumbs',
   ];
 
@@ -56,7 +56,7 @@ class BreadcrumbsTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Create some nodes.

modules/islandora_image/tests/src/Functional/GenerateImageDerivativeTest.php

@@ -70,7 +70,8 @@ class GenerateImageDerivativeTest extends GenerateDerivativeTestBase {
       'field_media_of[0][target_id]' => 'Test Node',
       'field_tags[0][target_id]' => 'Preservation Master',
     ];
-    $this->drupalPostForm('media/add/' . $this->testMediaType->id(), $values, $this->t('Save'));
+    $this->drupalGet('media/add/' . $this->testMediaType->id());
+    $this->submitForm($values, $this->t('Save'));
 
     $expected = [
       'source_uri' => 'test_file.txt',

modules/islandora_text_extraction/src/Controller/MediaSourceController.php

@@ -98,7 +98,7 @@ class MediaSourceController extends ControllerBase {
       if (!$this->fileSystem->prepareDirectory($directory, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS)) {
         throw new HttpException(500, "The destination directory does not exist, could not be created, or is not writable");
       }
-      $file = file_save_data($contents, $content_location, FileSystemInterface::EXISTS_REPLACE);
+      $file = \Drupal::service('file.repository')->writeData($contents, $content_location, FileSystemInterface::EXISTS_REPLACE);
       if ($media->hasField($destination_field)) {
         $media->{$destination_field}->setValue([
           'target_id' => $file->id(),

modules/islandora_text_extraction/tests/src/Functional/LoadTest.php

@@ -17,7 +17,7 @@ class LoadTest extends IslandoraFunctionalTestBase {
    *
    * @var array
    */
-  public static $modules = ['islandora_text_extraction'];
+  protected static $modules = ['islandora_text_extraction'];
 
   /**
    * A user with permission to administer site configuration.
@@ -29,7 +29,7 @@ class LoadTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->user = $this->drupalCreateUser(['administer site configuration']);
     $this->drupalLogin($this->user);

modules/islandora_video/tests/src/Functional/GenerateVideoDerivativeTest.php

@@ -65,7 +65,8 @@ class GenerateVideoDerivativeTest extends GenerateDerivativeTestBase {
       'field_media_of[0][target_id]' => 'Test Node',
       'field_tags[0][target_id]' => 'Preservation Master',
     ];
-    $this->drupalPostForm('media/add/' . $this->testMediaType->id(), $values, $this->t('Save'));
+    $this->drupalGet('media/add/' . $this->testMediaType->id());
+    $this->submitForm($values, $this->t('Save'));
 
     $expected = [
       'source_uri' => 'test_file.txt',

src/EventSubscriber/LinkHeaderSubscriber.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\islandora\EventSubscriber;
 
+use Symfony\Component\HttpKernel\Event\ResponseEvent;
 use Drupal\Core\Access\AccessManagerInterface;
 use Drupal\Core\Entity\EntityFieldManagerInterface;
 use Drupal\Core\Entity\EntityInterface;
@@ -13,7 +14,6 @@ use Drupal\Core\Entity\Exception\UndefinedLinkTemplateException;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Symfony\Component\HttpFoundation\RequestStack;
 use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
 use Symfony\Component\HttpKernel\KernelEvents;
 
 /**
@@ -312,9 +312,9 @@ abstract class LinkHeaderSubscriber implements EventSubscriberInterface {
   /**
    * Adds resource-specific link headers to appropriate responses.
    *
-   * @param \Symfony\Component\HttpKernel\Event\FilterResponseEvent $event
+   * @param \Symfony\Component\HttpKernel\Event\ResponseEvent $event
    *   Event containing the response.
    */
-  abstract public function onResponse(FilterResponseEvent $event);
+  abstract public function onResponse(ResponseEvent $event);
 
 }

src/EventSubscriber/MediaLinkHeaderSubscriber.php

@@ -2,10 +2,10 @@
 
 namespace Drupal\islandora\EventSubscriber;
 
+use Symfony\Component\HttpKernel\Event\ResponseEvent;
 use Drupal\Core\Url;
 use Drupal\media\MediaInterface;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
-use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
 
 /**
  * Subscribes to MediaLinkHeader Event.
@@ -17,7 +17,7 @@ class MediaLinkHeaderSubscriber extends LinkHeaderSubscriber implements EventSub
   /**
    * {@inheritdoc}
    */
-  public function onResponse(FilterResponseEvent $event) {
+  public function onResponse(ResponseEvent $event) {
     $response = $event->getResponse();
 
     $media = $this->getObject($response, 'media');

src/EventSubscriber/NodeLinkHeaderSubscriber.php

@@ -2,9 +2,9 @@
 
 namespace Drupal\islandora\EventSubscriber;
 
+use Symfony\Component\HttpKernel\Event\ResponseEvent;
 use Drupal\node\NodeInterface;
 use Drupal\islandora\IslandoraUtils;
-use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
 /**
@@ -17,10 +17,10 @@ class NodeLinkHeaderSubscriber extends LinkHeaderSubscriber implements EventSubs
   /**
    * Adds node-specific link headers to appropriate responses.
    *
-   * @param \Symfony\Component\HttpKernel\Event\FilterResponseEvent $event
+   * @param \Symfony\Component\HttpKernel\Event\ResponseEvent $event
    *   Event containing the response.
    */
-  public function onResponse(FilterResponseEvent $event) {
+  public function onResponse(ResponseEvent $event) {
     $response = $event->getResponse();
 
     $node = $this->getObject($response, 'node');

src/Flysystem/Adapter/FedoraAdapter.php

@@ -2,6 +2,8 @@
 
 namespace Drupal\islandora\Flysystem\Adapter;
 
+use GuzzleHttp\Psr7\Header;
+use function GuzzleHttp\Psr7\parse_header;
 use Drupal\Core\Logger\LoggerChannelInterface;
 use Islandora\Chullo\IFedoraApi;
 use League\Flysystem\AdapterInterface;
@@ -159,11 +161,11 @@ class FedoraAdapter implements AdapterInterface {
     // directory.
     $type = 'dir';
     // phpcs:disable
-    if (class_exists(\GuzzleHttp\Psr7\Header::class)) {
-      $links = \GuzzleHttp\Psr7\Header::parse($response->getHeader('Link'));
+    if (class_exists(Header::class)) {
+      $links = Header::parse($response->getHeader('Link'));
     }
     else {
-      $links = \GuzzleHttp\Psr7\parse_header($response->getHeader('Link'));
+      $links = parse_header($response->getHeader('Link'));
     }
     // phpcs:enable
     foreach ($links as $link) {
@@ -402,11 +404,11 @@ class FedoraAdapter implements AdapterInterface {
     if ($response->getStatusCode() == 410) {
       $return = FALSE;
       // phpcs:disable
-      if (class_exists(\GuzzleHttp\Psr7\Header::class)) {
-        $link_headers = \GuzzleHttp\Psr7\Header::parse($response->getHeader('Link'));
+      if (class_exists(Header::class)) {
+        $link_headers = Header::parse($response->getHeader('Link'));
       }
       else {
-        $link_headers = \GuzzleHttp\Psr7\parse_header($response->getHeader('Link'));
+        $link_headers = parse_header($response->getHeader('Link'));
       }
       // phpcs:enable
       if ($link_headers) {

src/Form/AddChildrenWizard/AbstractFileSelectionForm.php

@@ -37,6 +37,11 @@ abstract class AbstractFileSelectionForm extends FormBase {
    * @var \Drupal\islandora\Form\AddChildrenWizard\AbstractBatchProcessor|null
    */
   protected ?AbstractBatchProcessor $batchProcessor;
+  private \static $static;
+  public function __construct(\static $static)
+  {
+      $this->static = $static;
+  }
 
   /**
    * {@inheritdoc}
@@ -49,7 +54,7 @@ abstract class AbstractFileSelectionForm extends FormBase {
     $instance->entityFieldManager = $container->get('entity_field.manager');
     $instance->currentUser = $container->get('current_user');
 
-    $instance->batchProcessor = $container->get(static::BATCH_PROCESSOR);
+    $instance->batchProcessor = $this->static;
 
     return $instance;
   }

tests/src/Functional/AddChildTest.php

@@ -12,7 +12,7 @@ class AddChildTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $this->parent =

tests/src/Functional/AddMediaToNodeTest.php

@@ -31,7 +31,7 @@ class AddMediaToNodeTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $this->node = $this->container->get('entity_type.manager')->getStorage('node')->create([

tests/src/Functional/ContentEntityTypeTest.php

@@ -52,7 +52,8 @@ class ContentEntityTypeTest extends IslandoraFunctionalTestBase {
       'name[0][value]' => 'Test Media',
       'files[field_media_file_0]' => __DIR__ . '/../../fixtures/test_file.txt',
     ];
-    $this->drupalPostForm('media/add/' . $this->testMediaType->id(), $values, $this->t('Save'));
+    $this->drupalGet('media/add/' . $this->testMediaType->id());
+    $this->submitForm($values, $this->t('Save'));
     $this->assertSession()->pageTextNotContains("Hello World!");
   }
 

tests/src/Functional/DeleteMediaTest.php

@@ -16,7 +16,7 @@ class DeleteMediaTest extends IslandoraFunctionalTestBase {
    *
    * @var array
    */
-  public static $modules = [
+  protected static $modules = [
     'media_test_views',
     'context_ui',
     'field_ui',
@@ -47,7 +47,7 @@ class DeleteMediaTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Create a test user.

tests/src/Functional/DerivativeReactionTest.php

@@ -19,7 +19,7 @@ class DerivativeReactionTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $this->node = $this->container->get('entity_type.manager')->getStorage('node')->create([
@@ -52,7 +52,8 @@ class DerivativeReactionTest extends IslandoraFunctionalTestBase {
       'files[field_media_file_0]' => __DIR__ . '/../../fixtures/test_file.txt',
       'field_media_of[0][target_id]' => 'Test Node',
     ];
-    $this->drupalPostForm('media/add/' . $this->testMediaType->id(), $values, $this->t('Save'));
+    $this->drupalGet('media/add/' . $this->testMediaType->id());
+    $this->submitForm($values, $this->t('Save'));
 
     // field_media_of is set and there's a file, so derivatives should fire.
     $this->assertSession()->pageTextContains("Hello World!");

tests/src/Functional/GenerateDerivativeTestBase.php

@@ -29,7 +29,7 @@ abstract class GenerateDerivativeTestBase extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $this->createUserAndLogin();

tests/src/Functional/IndexingTest.php

@@ -12,7 +12,7 @@ class IndexingTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Create an action that dsm's "Goodbye, Cruel World!".
@@ -63,9 +63,10 @@ class IndexingTest extends IslandoraFunctionalTestBase {
 
     // Add the Goodbye World reaction.
     $this->addPresetReaction('test', 'delete', 'goodbye_world');
+    $this->drupalGet("$url/delete");
 
     // Delete the node.
-    $this->drupalPostForm("$url/delete", [], $this->t('Delete'));
+    $this->submitForm([], $this->t('Delete'));
     $this->assertSession()->statusCodeEquals(200);
 
     // Confirm Goodbye, Cruel World! is printed to the screen.

tests/src/Functional/IslandoraFunctionalTestBase.php

@@ -88,7 +88,7 @@ class IslandoraFunctionalTestBase extends BrowserTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Delete the node rest config that's bootstrapped with Drupal.
@@ -314,7 +314,8 @@ EOD;
    * Create a new node by posting its add form.
    */
   protected function postNodeAddForm($bundle_id, $values, $button_text) {
-    $this->drupalPostForm("node/add/$bundle_id", $values, $this->t('@text', ['@text' => $button_text]));
+    $this->drupalGet("node/add/$bundle_id");
+    $this->submitForm($values, $this->t('@text', ['@text' => $button_text]));
     $this->assertSession()->statusCodeEquals(200);
   }
 
@@ -322,7 +323,8 @@ EOD;
    * Create a new node by posting its add form.
    */
   protected function postTermAddForm($taxomony_id, $values, $button_text) {
-    $this->drupalPostForm("admin/structure/taxonomy/manage/$taxomony_id/add", $values, $this->t('@text', ['@text' => $button_text]));
+    $this->drupalGet("admin/structure/taxonomy/manage/$taxomony_id/add");
+    $this->submitForm($values, $this->t('@text', ['@text' => $button_text]));
     $this->assertSession()->statusCodeEquals(200);
   }
 
@@ -330,7 +332,8 @@ EOD;
    * Edits a node by posting its edit form.
    */
   protected function postEntityEditForm($entity_url, $values, $button_text) {
-    $this->drupalPostForm("$entity_url/edit", $values, $this->t('@text', ['@text' => $button_text]));
+    $this->drupalGet("$entity_url/edit");
+    $this->submitForm($values, $this->t('@text', ['@text' => $button_text]));
     $this->assertSession()->statusCodeEquals(200);
   }
 

tests/src/Functional/IslandoraImageFormatterTest.php

@@ -92,7 +92,7 @@ class IslandoraImageFormatterTest extends IslandoraFunctionalTestBase {
         ':title' => 'Some Title',
       ]
     );
-    $this->assertEqual(count($elements), 1, 'Image linked to content formatter displaying points to Node and not Media.');
+    $this->assertEquals(count($elements), 1, 'Image linked to content formatter displaying points to Node and not Media.');
   }
 
 }

tests/src/Functional/IslandoraSettingsFormTest.php

@@ -14,7 +14,7 @@ class IslandoraSettingsFormTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Create a test user.
@@ -36,20 +36,25 @@ class IslandoraSettingsFormTest extends IslandoraFunctionalTestBase {
     $this->assertSession()->statusCodeEquals(200);
     $this->assertSession()->pageTextContains("JWT Expiry");
     $this->assertSession()->fieldValueEquals('edit-jwt-expiry', '+2 hour');
+    $this->drupalGet('/admin/config/islandora/core');
     // Blank is not allowed.
-    $this->drupalPostForm('/admin/config/islandora/core', ['edit-jwt-expiry' => ""], $this->t('Save configuration'));
+    $this->submitForm(['edit-jwt-expiry' => ""], $this->t('Save configuration'));
     $this->assertSession()->pageTextContainsOnce('"" is not a valid time or interval expression.');
+    $this->drupalGet('/admin/config/islandora/core');
     // Negative is not allowed.
-    $this->drupalPostForm('/admin/config/islandora/core', ['edit-jwt-expiry' => "-2 hours"], $this->t('Save configuration'));
+    $this->submitForm(['edit-jwt-expiry' => "-2 hours"], $this->t('Save configuration'));
     $this->assertSession()->pageTextContainsOnce('Time or interval expression cannot be negative');
+    $this->drupalGet('/admin/config/islandora/core');
     // Must include an integer value.
-    $this->drupalPostForm('/admin/config/islandora/core', ['edit-jwt-expiry' => "last hour"], $this->t('Save configuration'));
+    $this->submitForm(['edit-jwt-expiry' => "last hour"], $this->t('Save configuration'));
     $this->assertSession()->pageTextContainsOnce('No numeric interval specified, for example "1 day"');
+    $this->drupalGet('/admin/config/islandora/core');
     // Must have an accepted interval.
-    $this->drupalPostForm('/admin/config/islandora/core', ['edit-jwt-expiry' => "1 fortnight"], $this->t('Save configuration'));
+    $this->submitForm(['edit-jwt-expiry' => "1 fortnight"], $this->t('Save configuration'));
     $this->assertSession()->pageTextContainsOnce('No time interval found, please include one of');
+    $this->drupalGet('/admin/config/islandora/core');
     // Test a valid setting.
-    $this->drupalPostForm('/admin/config/islandora/core', ['edit-jwt-expiry' => "2 weeks"], $this->t('Save configuration'));
+    $this->submitForm(['edit-jwt-expiry' => "2 weeks"], $this->t('Save configuration'));
     $this->assertSession()->pageTextContainsOnce('The configuration options have been saved.');
 
   }

tests/src/Functional/JsonldSelfReferenceReactionTest.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\Tests\islandora\Functional;
 
+use function GuzzleHttp\json_decode;
 /**
  * Class MappingUriPredicateReactionTest.
  *
@@ -13,7 +14,7 @@ class JsonldSelfReferenceReactionTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $types = ['schema:Thing'];
@@ -61,7 +62,7 @@ class JsonldSelfReferenceReactionTest extends IslandoraFunctionalTestBase {
 
     $contents = $this->drupalGet($url . '?_format=jsonld');
     $this->assertSession()->statusCodeEquals(200);
-    $json = \GuzzleHttp\json_decode($contents, TRUE);
+    $json = json_decode($contents, TRUE);
     $this->assertArrayHasKey('http://purl.org/dc/terms/title',
       $json['@graph'][0], 'Missing dcterms:title key');
     $this->assertEquals(
@@ -103,7 +104,7 @@ class JsonldSelfReferenceReactionTest extends IslandoraFunctionalTestBase {
     drupal_flush_all_caches();
 
     $new_contents = $this->drupalGet($url . '?_format=jsonld');
-    $json = \GuzzleHttp\json_decode($new_contents, TRUE);
+    $json = json_decode($new_contents, TRUE);
     $this->assertEquals(
       'Test Node',
       $json['@graph'][0]['http://purl.org/dc/terms/title'][0]['@value'],
@@ -123,7 +124,7 @@ class JsonldSelfReferenceReactionTest extends IslandoraFunctionalTestBase {
     $this->assertSession()
       ->pageTextContains("The context $context_name has been saved");
     $new_contents = $this->drupalGet($url . '?_format=jsonld');
-    $json = \GuzzleHttp\json_decode($new_contents, TRUE);
+    $json = json_decode($new_contents, TRUE);
     $this->assertEquals(
       'Test Node',
       $json['@graph'][0]['http://purl.org/dc/terms/title'][0]['@value'],
@@ -161,7 +162,7 @@ class JsonldSelfReferenceReactionTest extends IslandoraFunctionalTestBase {
 
     $contents = $this->drupalGet($media_url . '?_format=jsonld');
     $this->assertSession()->statusCodeEquals(200);
-    $json = \GuzzleHttp\json_decode($contents, TRUE);
+    $json = json_decode($contents, TRUE);
     $this->assertEquals(
       "$media_url?_format=jsonld",
       $json['@graph'][0]['@id'],
@@ -186,7 +187,7 @@ class JsonldSelfReferenceReactionTest extends IslandoraFunctionalTestBase {
     drupal_flush_all_caches();
 
     $new_contents = $this->drupalGet($media_url . '?_format=jsonld');
-    $json = \GuzzleHttp\json_decode($new_contents, TRUE);
+    $json = json_decode($new_contents, TRUE);
     $this->assertEquals(
       "$media_url?_format=jsonld",
       $json['@graph'][0]['http://www.iana.org/assignments/relation/describedby'][0]['@id'],

tests/src/Functional/JsonldTypeAlterReactionTest.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\Tests\islandora\Functional;
 
+use function GuzzleHttp\json_decode;
 /**
  * Tests Jsonld Alter Reaction.
  *
@@ -20,17 +21,18 @@ class JsonldTypeAlterReactionTest extends JsonldSelfReferenceReactionTest {
       'administer node fields',
     ]);
     $this->drupalLogin($account);
+    $this->drupalGet('admin/structure/types/manage/test_type/fields/add-field');
 
     // Add the typed predicate we will select in the reaction config.
     // Taken from FieldUiTestTrait->fieldUIAddNewField.
-    $this->drupalPostForm('admin/structure/types/manage/test_type/fields/add-field', [
+    $this->submitForm([
       'new_storage_type' => 'string',
       'label' => 'Typed Predicate',
       'field_name' => 'type_predicate',
     ], $this->t('Save and continue'));
-    $this->drupalPostForm(NULL, [], $this->t('Save field settings'));
-    $this->drupalPostForm(NULL, [], $this->t('Save settings'));
-    $this->assertRaw('field_type_predicate', 'Redirected to "Manage fields" page.');
+    $this->submitForm([], $this->t('Save field settings'));
+    $this->submitForm([], $this->t('Save settings'));
+    $this->assertSession()->responseContains('field_type_predicate');
 
     // Add the test node.
     $this->postNodeAddForm('test_type', [
@@ -46,7 +48,7 @@ class JsonldTypeAlterReactionTest extends JsonldSelfReferenceReactionTest {
 
     $contents = $this->drupalGet($url . '?_format=jsonld');
     $this->assertSession()->statusCodeEquals(200);
-    $json = \GuzzleHttp\json_decode($contents, TRUE);
+    $json = json_decode($contents, TRUE);
     $this->assertArrayHasKey('@type',
       $json['@graph'][0], 'Missing @type');
     $this->assertEquals(
@@ -81,7 +83,7 @@ class JsonldTypeAlterReactionTest extends JsonldSelfReferenceReactionTest {
 
     // Check for the new @type from the field_type_predicate value.
     $new_contents = $this->drupalGet($url . '?_format=jsonld');
-    $json = \GuzzleHttp\json_decode($new_contents, TRUE);
+    $json = json_decode($new_contents, TRUE);
     $this->assertTrue(
       in_array('http://schema.org/Organization', $json['@graph'][0]['@type']),
       'Missing altered @type value of http://schema.org/Organization'

tests/src/Functional/LinkHeaderTest.php

@@ -42,7 +42,7 @@ class LinkHeaderTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $account = $this->createUserAndLogin();

tests/src/Functional/MediaSourceUpdateTest.php

@@ -35,7 +35,7 @@ class MediaSourceUpdateTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Make a user with appropriate permissions.

tests/src/Functional/NodeHasTermTest.php

@@ -13,7 +13,7 @@ class NodeHasTermTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
 
     parent::setUp();
 

tests/src/Functional/ViewModeAlterReactionTest.php

@@ -26,7 +26,7 @@ class ViewModeAlterReactionTest extends IslandoraFunctionalTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Node to be referenced via member of.

tests/src/FunctionalJavascript/IntegerWeightTest.php

@@ -80,7 +80,7 @@ class IntegerWeightTest extends WebDriverTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $this->adminUser = $this->drupalCreateUser(

tests/src/Kernel/EventGeneratorTest.php

@@ -41,7 +41,7 @@ class EventGeneratorTest extends IslandoraKernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Create a test user.

tests/src/Kernel/FedoraAdapterTest.php

@@ -2,6 +2,9 @@
 
 namespace Drupal\Tests\islandora\Kernel;
 
+use Prophecy\PhpUnit\ProphecyTrait;
+use GuzzleHttp\Psr7\Utils;
+use function GuzzleHttp\Psr7\stream_for;
 use Drupal\Core\Logger\LoggerChannelInterface;
 use Drupal\islandora\Flysystem\Adapter\FedoraAdapter;
 use GuzzleHttp\Psr7\Response;
@@ -18,6 +21,7 @@ use Symfony\Component\Mime\MimeTypeGuesserInterface;
  */
 class FedoraAdapterTest extends IslandoraKernelTestBase {
 
+  use ProphecyTrait;
   /**
    * A mimetype guesser prophecy.
    *
@@ -35,7 +39,7 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
     $this->mimeGuesser = $this->prophesize(MimeTypeGuesserInterface::class)
       ->reveal();
@@ -58,10 +62,10 @@ class FedoraAdapterTest extends IslandoraKernelTestBase {
     $prophecy->getHeader('Content-Type')->willReturn(['text/plain']);
     $prophecy->getHeader('Content-Length')->willReturn([strlen("DERP")]);
     // phpcs:disable
-    if (class_exists(\GuzzleHttp\Psr7\Utils::class)) {
-      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\Utils::streamFor("DERP"));
+    if (class_exists(Utils::class)) {
+      $prophecy->getBody()->willReturn(Utils::streamFor("DERP"));
     } else {
-      $prophecy->getBody()->willReturn(\GuzzleHttp\Psr7\stream_for("DERP"));
+      $prophecy->getBody()->willReturn(stream_for("DERP"));
     }
     // phpcs:enable
     return $prophecy;

tests/src/Kernel/IslandoraKernelTestBase.php

@@ -12,7 +12,7 @@ abstract class IslandoraKernelTestBase extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public static $modules = [
+  protected static $modules = [
     'system',
     'user',
     'field',
@@ -43,7 +43,7 @@ abstract class IslandoraKernelTestBase extends KernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     // Bootstrap minimal Drupal environment to run the tests.

tests/src/Kernel/JwtEventSubscriberTest.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\Tests\islandora\Kernel;
 
+use Prophecy\PhpUnit\ProphecyTrait;
 use Drupal\jwt\Authentication\Event\JwtAuthGenerateEvent;
 use Drupal\jwt\Authentication\Event\JwtAuthValidEvent;
 use Drupal\jwt\Authentication\Event\JwtAuthValidateEvent;
@@ -19,6 +20,7 @@ use Drupal\islandora\EventSubscriber\JwtEventSubscriber;
  */
 class JwtEventSubscriberTest extends IslandoraKernelTestBase {
 
+  use ProphecyTrait;
   use UserCreationTrait;
 
   /**
@@ -31,7 +33,7 @@ class JwtEventSubscriberTest extends IslandoraKernelTestBase {
   /**
    * {@inheritdoc}
    */
-  public function setUp() {
+  public function setUp(): void {
     parent::setUp();
 
     $this->user = $this->createUser();