bug #50301 [FrameworkBundle] Ignore vars from dotenv files in secrets…

…:list (nicolas-grekas)

This PR was merged into the 6.3 branch.

Discussion
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[FrameworkBundle] Ignore vars from dotenv files in secrets:list

| Q             | A
| ------------- | ---
| Branch?       | 6.3
| Bug fix?      | yes
| New feature?  | no
| Deprecations? | no
| Tickets       | -
| License       | MIT
| Doc PR        | -

Sidekick of #48705

Commits
-------

8561045 [FrameworkBundle] Ignore vars from dotenv files in secrets:list

src/Symfony/Bundle/FrameworkBundle/Command/SecretsListCommand.php

@@ -86,7 +86,7 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         }
 
         foreach ($localSecrets ?? [] as $name => $value) {
-            if (isset($rows[$name])) {
+            if (isset($rows[$name]) && !\in_array($value, ['', false, null], true)) {
                 $rows[$name][] = $dump($value);
             }
         }

src/Symfony/Bundle/FrameworkBundle/Tests/Command/SecretsListCommandTest.php

@@ -0,0 +1,51 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Bundle\FrameworkBundle\Tests\Command;
+
+use PHPUnit\Framework\TestCase;
+use Symfony\Bundle\FrameworkBundle\Command\SecretsListCommand;
+use Symfony\Bundle\FrameworkBundle\Secrets\AbstractVault;
+use Symfony\Component\Console\Tester\CommandTester;
+
+class SecretsListCommandTest extends TestCase
+{
+    public function testExecute()
+    {
+        $vault = $this->createMock(AbstractVault::class);
+        $vault->method('list')->willReturn(['A' => 'a', 'B' => 'b', 'C' => null, 'D' => null, 'E' => null]);
+        $localVault = $this->createMock(AbstractVault::class);
+        $localVault->method('list')->willReturn(['A' => '', 'B' => 'A', 'C' => '', 'D' => false, 'E' => null]);
+        $command = new SecretsListCommand($vault, $localVault);
+        $tester = new CommandTester($command);
+        $this->assertSame(0, $tester->execute([]));
+
+        $expectedOutput = <<<EOTXT
+             // Use "%%env(<name>)%%" to reference a secret in a config file.
+
+             // To reveal the secrets run %s secrets:list --reveal
+
+             -------- -------- -------------
+              Secret   Value    Local Value
+             -------- -------- -------------
+              A        "a"
+              B        "b"      "A"
+              C        ******
+              D        ******
+              E        ******
+             -------- -------- -------------
+
+             // Local values override secret values.
+             // Use secrets:set --local to define them.
+            EOTXT;
+        $this->assertStringMatchesFormat($expectedOutput, trim(preg_replace('/ ++$/m', '', $tester->getDisplay(true)), "\n"));
+    }
+}