move to dedicated test

tests/Antlers/Runtime/CoreModifiersTest.php

@@ -238,27 +238,6 @@ public function test_where()
         $this->assertSame('DominionNetrunner', $this->resultOf($template));
     }
 
-    public function test_where_in()
-    {
-        $template = <<<'EOT'
-{{ complex | where_in("last_name", ["Zebra", "Bravo"]) }}{{ first_name }}{{ /complex }}
-EOT;
-
-        $this->assertSame('ZealousBlathering', $this->resultOf($template));
-
-        $template = <<<'EOT'
-{{ complex where_in="{"last_name"}|{["Zebra", "Bravo"]}" }}{{ first_name }}{{ /complex }}
-EOT;
-
-        $this->assertSame('ZealousBlathering', $this->resultOf($template));
-
-        $template = <<<'EOT'
-{{ complex | where_in("last_name", "Zebra") }}{{ first_name }}{{ /complex }}
-EOT;
-
-        $this->assertSame('Zealous', $this->resultOf($template));
-    }
-
     public function test_unique()
     {
         $this->assertSame('zebra, hippo, hyena, giraffe', $this->resultOf('{{ checklist | unique | list }}'));

tests/Modifiers/WhereInTest.php

@@ -0,0 +1,44 @@
+<?php
+
+namespace Modifiers;
+
+use PHPUnit\Framework\Attributes\Group;
+use PHPUnit\Framework\Attributes\Test;
+use Statamic\Modifiers\Modify;
+use Statamic\Support\Arr;
+use Tests\TestCase;
+
+#[Group('array')]
+class WhereInTest extends TestCase
+{
+    #[Test]
+    public function it_filters_data_by_key_and_multiple_values(): void
+    {
+        $collection = [
+            ['product' => 'Desk', 'price' => 200],
+            ['product' => 'Chair', 'price' => 100],
+            ['product' => 'Bookcase', 'price' => 150],
+            ['product' => 'Door', 'price' => 100],
+        ];
+        $modified = $this->modify($collection, ['price', [150, 200]]);
+        $this->assertEquals(['Desk', 'Bookcase'], Arr::pluck($modified, 'product'));
+    }
+
+    #[Test]
+    public function it_filters_data_by_key_and_single_value(): void
+    {
+        $collection = [
+            ['product' => 'Desk', 'price' => 200],
+            ['product' => 'Chair', 'price' => 100],
+            ['product' => 'Bookcase', 'price' => 150],
+            ['product' => 'Door', 'price' => 100],
+        ];
+        $modified = $this->modify($collection, ['price', 100]);
+        $this->assertEquals(['Chair', 'Door'], Arr::pluck($modified, 'product'));
+    }
+
+    private function modify($value, array $params)
+    {
+        return Modify::value($value)->whereIn($params)->fetch();
+    }
+}