fix bug with arrays of documents in jsonSerialize output

fix and test

src/document.php

@@ -207,7 +207,10 @@ protected function getFieldArray( string ...$fields ) : array
 						$out[$name][] = $subDocument->jsonSerialize();
 					}
 				}
-				$out[$name] = $this->{$name};
+				else
+				{
+					$out[$name] = $this->{$name};
+				}
 			}
 		}
 

tests/arrayDocumentTest.php

@@ -7,7 +7,7 @@
 
 final class arrayDocumentTest extends TestCase
 {
-	public function testJSONOutput()
+	protected function getDoc()
 	{
 		$doc = new arrayDocument();
 
@@ -33,6 +33,13 @@ public function testJSONOutput()
 				->full_name( 'Jenny Jumper' )
 			);
 
+		return $doc;
+	}
+	//------------------------------------------------------------------------
+	public function testJSONOutput()
+	{
+		$doc = $this->getDoc();
+
 		$this->assertEquals(
 			'{"name":[{"full_name":"Robby the Robot","first_name":"Robby","last_name":"Robot"},{"full_name":"Shelia Supreme","first_name":"Shelia","last_name":"Supreme"},{"full_name":"Duran Duran","first_name":"Duran","last_name":"Duran"},{"full_name":"Jenny Jumper","first_name":"Jenny","last_name":"Jumper"}]}',
 			json_encode( $doc )
@@ -46,4 +53,12 @@ public function testJSONOutput()
 		unset( $doc->name );
 		$doc->doValidate();
 	}
+	//------------------------------------------------------------------------
+	public function testGetFieldArray()
+	{
+		$doc = $this->getDoc();
+		$arr = $doc->jsonSerialize();
+		$this->assertTrue( is_array( $arr['name'][0] ), 'sub document is serialized' );
+
+	}
 }