core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php b/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php
index 0b14a47..6ee64ac 100644
--- a/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php
+++ b/core/tests/Drupal/Tests/Core/Asset/LibraryDependencyResolverTest.php
@@ -171,10 +171,9 @@ public function testGetMinimalRepresentativeSubset(array $libraries, array $expe
 
   /**
    * @covers ::getMinimalRepresentativeSubset
-   *
-   * @expectedException \AssertionError
    */
   public function testGetMinimalRepresentativeSubsetInvalidInput() {
+    $this->setExpectedException(\AssertionError::class, '$libraries must be a set.');
     $this->libraryDependencyResolver->getMinimalRepresentativeSubset(['test/no_deps_a', 'test/no_deps_a']);
   }