diff --git a/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php b/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php
index 42a6a8b67ab..ca77a02a68f 100644
--- a/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php
+++ b/tests/Doctrine/Tests/ORM/Functional/QueryDqlFunctionTest.php
@@ -421,6 +421,39 @@ public function testBitAndComparison(): void
         self::assertEquals($result[3][0]['salary'] / 100000 & 2, $result[3]['salary_bit_and']);
     }
 
+    public function testInArithmeticExpression1(): void
+    {
+        $dql = <<<SQL
+            SELECT m, m.name AS name
+            FROM Doctrine\Tests\Models\Company\CompanyManager m
+            WHERE m.salary IN (800000/8, 100000*2)
+        SQL;
+
+        $result = $this->_em->createQuery($dql)->getArrayResult();
+
+        self::assertCount(2, $result);
+        self::assertEquals('Roman B.', $result[0]['name']);
+        self::assertEquals('Benjamin E.', $result[1]['name']);
+    }
+
+    public function testInArithmeticExpression2(): void
+    {
+        $this->_em->getConfiguration()->addCustomStringFunction('FOO', static function ($funcName) {
+            return new NoOp($funcName);     // See Doctrine/Tests/ORM/Functional/CustomFunctionsTest
+        });
+
+        $dql = <<<SQL
+            SELECT m, m.name AS name
+            FROM Doctrine\Tests\Models\Company\CompanyManager m
+            WHERE m.department IN (FOO('Administration'))
+        SQL;
+
+        $result = $this->_em->createQuery($dql)->getArrayResult();
+
+        self::assertCount(1, $result);
+        self::assertEquals('Jonathan W.', $result[0]['name']);
+    }
+
     protected function generateFixture(): void
     {
         $manager1 = new CompanyManager();
diff --git a/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php b/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php
index 110c93d774e..a970dfe840c 100644
--- a/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php
+++ b/tests/Doctrine/Tests/ORM/Query/SelectSqlGenerationTest.php
@@ -643,20 +643,17 @@ public function testInvalidInExpressionWithSingleValuedAssociationPathExpression
         );
     }
 
-    public function testCustomFunctionWithinInExpression() : void
+    public function testInExpressionWithArithmeticExpression(): void
     {
         $this->entityManager->getConfiguration()->addCustomStringFunction('FOO', MyAbsFunction::class);
+
         $this->assertSqlGeneration(
             "SELECT u FROM Doctrine\Tests\Models\Forum\ForumUser u WHERE u.username IN (FOO('Lo'), 'Lo', :name)",
-            <<<'SQL'
-SELECT f0_.id AS id_0, f0_.username AS username_1 FROM forum_users f0_ WHERE f0_.username IN (ABS('Lo'), 'Lo', ?)
-SQL
+            "SELECT f0_.id AS id_0, f0_.username AS username_1 FROM forum_users f0_ WHERE f0_.username IN (ABS('Lo'), 'Lo', ?)"
         );
         $this->assertSqlGeneration(
-            'SELECT u FROM Doctrine\Tests\Models\Forum\ForumUser u WHERE u.id IN (1+1)',
-            <<<'SQL'
-SELECT f0_.id AS id_0, f0_.username AS username_1 FROM forum_users f0_ WHERE f0_.id IN (1 + 1)
-SQL
+            'SELECT u FROM Doctrine\Tests\Models\Forum\ForumUser u WHERE u.id IN (1 + 1)',
+            'SELECT f0_.id AS id_0, f0_.username AS username_1 FROM forum_users f0_ WHERE f0_.id IN (1 + 1)'
         );
     }