Create CallableAccess comparator test with invokable class

Author: SenseException

tests/Comparator/CallableAccessTest.php

@@ -14,7 +14,7 @@
 /** @covers \Budgegeria\IntlSort\Comparator\CallableAccess */
 class CallableAccessTest extends TestCase
 {
-    public function testDelegateToCollator(): void
+    public function testCollatorWithFunction(): void
     {
         $func     = static function (mixed $value): string {
             assert(is_array($value));
@@ -31,4 +31,25 @@ public function testDelegateToCollator(): void
 
         self::assertSame(-1, $comparator->compare(['foo' => '1'], ['foo' => '2']));
     }
+
+    public function testCollatorWithClass(): void
+    {
+        $func     = new class {
+            public function __invoke(mixed $value): string
+            {
+                assert(is_array($value));
+
+                return (string) $value['foo'];
+            }
+        };
+        $collator = self::createMock(Collator::class);
+        $collator->expects(self::once())
+            ->method('compare')
+            ->with('1', '2')
+            ->willReturn(-1);
+
+        $comparator = new CallableAccess($collator, $func);
+
+        self::assertSame(-1, $comparator->compare(['foo' => '1'], ['foo' => '2']));
+    }
 }