[dsn] allow specify special chars in user and password.

fixes php-enqueue/enqueue-dev#652

Dsn.php

@@ -226,7 +226,14 @@ public static function parse(string $dsn): array
         $schemeExtensions = array_values($schemeParts);
 
         $user = parse_url($dsn, PHP_URL_USER) ?: null;
+        if (is_string($user)) {
+            $user = rawurldecode($user);
+        }
+
         $password = parse_url($dsn, PHP_URL_PASS) ?: null;
+        if (is_string($password)) {
+            $password = rawurldecode($password);
+        }
 
         $path = parse_url($dsn, PHP_URL_PATH) ?: null;
         if ($path) {

Tests/DsnTest.php

@@ -382,6 +382,36 @@ public function testShouldParseExpectedNumberOfMultipleDsns()
         $this->assertCount(3, $dsns);
     }
 
+    public function testShouldParseDsnWithOnlyUser()
+    {
+        $dsn = Dsn::parseFirst('foo://user@host');
+
+        $this->assertSame('user', $dsn->getUser());
+        $this->assertNull($dsn->getPassword());
+        $this->assertSame('foo', $dsn->getScheme());
+        $this->assertSame('host', $dsn->getHost());
+    }
+
+    public function testShouldUrlEncodeUser()
+    {
+        $dsn = Dsn::parseFirst('foo://us%3Aer@host');
+
+        $this->assertSame('us:er', $dsn->getUser());
+        $this->assertNull($dsn->getPassword());
+        $this->assertSame('foo', $dsn->getScheme());
+        $this->assertSame('host', $dsn->getHost());
+    }
+
+    public function testShouldUrlEncodePassword()
+    {
+        $dsn = Dsn::parseFirst('foo://user:pass%3Aword@host');
+
+        $this->assertSame('user', $dsn->getUser());
+        $this->assertSame('pass:word', $dsn->getPassword());
+        $this->assertSame('foo', $dsn->getScheme());
+        $this->assertSame('host', $dsn->getHost());
+    }
+
     public static function provideSchemes()
     {
         yield [':', '', '', []];