Expand test to cover the non-JSON format

Make sure the change does not break the non-JSON version of the output.

Author: Zegnat

tests/Mf2/CombinedMicroformatsTest.php

@@ -423,10 +423,16 @@ public function testMf2DoesNotParseRelTag() {
 	 */
 	public function testEmptyPropertiesObjectInJSONMode() {
 		$input = '<div class="h-feed"><div class="h-entry"></div></div>';
+		// Try in JSON-mode: expect the raw PHP to be an stdClass instance that serializes to an empty object.
 		$parser = new Parser($input, null, true);
 		$output = $parser->parse();
 		$this->assertInstanceOf('\stdClass', $output['items'][0]['properties']);
 		$this->assertSame('{}', json_encode($output['items'][0]['properties']));
+		// Repeat in non-JSON-mode: expect the raw PHP to be an array. Check that its serialization is not what we need for mf2 JSON.
+		$parser = new Parser($input, null, false);
+		$output = $parser->parse();
+		$this->assertInternalType('array', $output['items'][0]['properties']);
+		$this->assertSame('[]', json_encode($output['items'][0]['properties']));
 	}
 
 }