minor #23245 [Dotenv] Test load() with multiple paths (chalasr)

This PR was merged into the 3.3 branch.

Discussion
----------

[Dotenv] Test load() with multiple paths

| Q             | A
| ------------- | ---
| Branch?       | 3.3
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #23242 (comment)
| License       | MIT
| Doc PR        | n/a

Commits
-------

dabecde [Dotenv] Test load() with multiple paths

src/Symfony/Component/Dotenv/Tests/DotenvTest.php

@@ -146,6 +146,28 @@ public function getEnvData()
         return $tests;
     }
 
+    public function testLoad()
+    {
+        @mkdir($tmpdir = sys_get_temp_dir().'/dotenv');
+
+        $path1 = tempnam($tmpdir, 'sf-');
+        $path2 = tempnam($tmpdir, 'sf-');
+
+        file_put_contents($path1, 'FOO=BAR');
+        file_put_contents($path2, 'BAR=BAZ');
+
+        (new DotEnv())->load($path1, $path2);
+
+        $this->assertSame('BAR', getenv('FOO'));
+        $this->assertSame('BAZ', getenv('BAR'));
+
+        putenv('FOO');
+        putenv('BAR');
+        unlink($path1);
+        unlink($path2);
+        rmdir($tmpdir);
+    }
+
     /**
      * @expectedException \Symfony\Component\Dotenv\Exception\PathException
      */