Add test showing current behaviour

Author: kubawerlos

tests/_files/DataProviderDependencyVoidTest.php

@@ -0,0 +1,39 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace PHPUnit\TestFixture;
+
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\Depends;
+use PHPUnit\Framework\TestCase;
+
+final class DataProviderDependencyVoidTest extends TestCase
+{
+    public static function provider(): iterable
+    {
+        return [
+            [0, 0],
+            [1, 'b' => 1],
+            ['a' => 2, 'b' => 2],
+            ['b' => 3, 'a' => 3],
+        ];
+    }
+
+    #[DataProvider('provider')]
+    #[Depends('testDependency')]
+    public function testEquality($a, $b): void
+    {
+        $this->assertSame($a, $b);
+    }
+
+    public function testDependency(): void
+    {
+        $this->assertTrue(true);
+    }
+}

tests/end-to-end/data-provider/dependency-void.phpt

@@ -0,0 +1,32 @@
+--TEST--
+phpunit ../../_files/DataProviderDependencyVoidTest.php
+--FILE--
+<?php declare(strict_types=1);
+$_SERVER['argv'][] = '--do-not-cache-result';
+$_SERVER['argv'][] = '--no-configuration';
+$_SERVER['argv'][] = __DIR__ . '/../../_files/DataProviderDependencyVoidTest.php';
+
+require_once __DIR__ . '/../../bootstrap.php';
+(new PHPUnit\TextUI\Application)->run($_SERVER['argv']);
+--EXPECTF--
+PHPUnit %s by Sebastian Bergmann and contributors.
+
+Runtime: %s
+
+..EEE                                                               5 / 5 (100%)
+
+Time: %s, Memory: %s
+
+There were 3 errors:
+
+1) PHPUnit\TestFixture\DataProviderDependencyVoidTest::testEquality with data set #1 (1, 1)
+Error: Cannot use positional argument after named argument during unpacking
+
+2) PHPUnit\TestFixture\DataProviderDependencyVoidTest::testEquality with data set #2 (2, 2)
+Error: Cannot use positional argument after named argument during unpacking
+
+3) PHPUnit\TestFixture\DataProviderDependencyVoidTest::testEquality with data set #3 (3, 3)
+Error: Cannot use positional argument after named argument during unpacking
+
+ERRORS!
+Tests: 5, Assertions: 2, Errors: 3.