diff --git a/tests/src/Functional/TwigTweakTest.php b/tests/src/Functional/TwigTweakTest.php
index 2f70966..a2391cd 100644
--- a/tests/src/Functional/TwigTweakTest.php
+++ b/tests/src/Functional/TwigTweakTest.php
@@ -269,14 +269,14 @@ final class TwigTweakTest extends BrowserTestBase {
     $url = Url::fromUserInput('/node/1/edit', ['absolute' => TRUE]);
     $link = Link::fromTextAndUrl('Edit', $url)->toString();
     $xpath = '//div[@class = "tt-link"]';
-    self::assertEquals($link, $this->xpath($xpath)[0]->getHtml());
+    self::assertSame((string) $link, $this->xpath($xpath)[0]->getHtml());
 
     // -- Link with HTML.
     $text = Markup::create('<b>Edit</b>');
     $url = Url::fromUserInput('/node/1/edit', ['absolute' => TRUE]);
     $link = Link::fromTextAndUrl($text, $url)->toString();
     $xpath = '//div[@class = "tt-link-html"]';
-    self::assertEquals($link, $this->xpath($xpath)[0]->getHtml());
+    self::assertSame((string) $link, $this->xpath($xpath)[0]->getHtml());
 
     // -- Status messages.
     $xpath = '//div[@class = "tt-messages"]//div[contains(@class, "messages--status") and contains(., "Hello world!")]';
diff --git a/tests/src/Kernel/AbstractExtractorTestCase.php b/tests/src/Kernel/AbstractExtractorTestCase.php
index f21b15d..af83a52 100644
--- a/tests/src/Kernel/AbstractExtractorTestCase.php
+++ b/tests/src/Kernel/AbstractExtractorTestCase.php
@@ -50,6 +50,7 @@ abstract class AbstractExtractorTestCase extends KernelTestBase {
 
     $this->installConfig(['node', 'twig_tweak_test']);
     $this->installSchema('file', 'file_usage');
+    $this->installEntitySchema('user');
     $this->installEntitySchema('file');
     $this->installEntitySchema('media');
 
diff --git a/tests/src/Kernel/CacheMetadataExtractorTest.php b/tests/src/Kernel/CacheMetadataExtractorTest.php
index ed3f5c6..23ebc05 100644
--- a/tests/src/Kernel/CacheMetadataExtractorTest.php
+++ b/tests/src/Kernel/CacheMetadataExtractorTest.php
@@ -90,7 +90,8 @@ final class CacheMetadataExtractorTest extends AbstractTestCase {
     self::assertRenderArray($expected_build, $build);
 
     // -- Wrong type.
-    self::expectErrorMessage('The input should be either instance of Drupal\Core\Cache\CacheableDependencyInterface or array. stdClass was given.');
+    $exception = new \InvalidArgumentException('The input should be either instance of Drupal\Core\Cache\CacheableDependencyInterface or array. stdClass was given.');
+    self::expectExceptionObject($exception);
     /* @noinspection PhpParamsInspection */
     $extractor->extractCacheMetadata(new \stdClass());
   }