+ add exprOp test

+ add contextual missing type hint for exprOr

Author: Vincent Le Henaff

lib/Doctrine/ODM/MongoDB/Aggregation/Expr.php

@@ -481,7 +481,7 @@ public function expr(): self
      * @see Builder::expr()
      * @see https://docs.mongodb.com/manual/reference/operator/query/expr/
      *
-     * @param array|\Doctrine\ODM\MongoDB\Query\Expr $expression
+     * @param array|self $expression
      */
     public function exprOp($expression): self
     {

lib/Doctrine/ODM/MongoDB/Aggregation/Stage/MatchStage.php

@@ -185,6 +185,8 @@ public function expr(): Expr
      *
      * @see Expr::exprOp()
      * @see https://docs.mongodb.com/manual/reference/operator/query/expr/
+     *
+     * @param array|\Doctrine\ODM\MongoDB\Aggregation\Expr $expression
      */
     public function exprOp($expression): self
     {

lib/Doctrine/ODM/MongoDB/Query/Builder.php

@@ -517,6 +517,8 @@ public function expr(): Expr
      *
      * @see Expr::exprOp()
      * @see https://docs.mongodb.com/manual/reference/operator/query/expr/
+     *
+     * @param array|Expr $expression
      */
     public function exprOp($expression): self
     {

tests/Doctrine/ODM/MongoDB/Tests/Aggregation/AggregationOperatorsProviderTrait.php

@@ -194,6 +194,11 @@ public static function provideExpressionOperators(): array
                 'operator' => 'exp',
                 'args' => ['$field'],
             ],
+            'exprOp' => [
+                'expected' => ['$expr' => '$array'],
+                'operator' => 'expr',
+                'args' => ['$array'],
+            ],
             'filter' => [
                 'expected' => ['$filter' => ['input' => '$array', 'as' => '$as', 'cond' => '$cond']],
                 'operator' => 'filter',