Oneof field should be serialized even it's equal to default. (#3153)
diff --git a/php/tests/encode_decode_test.php b/php/tests/encode_decode_test.php
index 288df56..b4cfed4 100644
--- a/php/tests/encode_decode_test.php
+++ b/php/tests/encode_decode_test.php
@@ -88,6 +88,13 @@
$n = new TestMessage();
$n->mergeFromString($data);
$this->assertSame(1, $n->getOneofMessage()->getA());
+
+ // Encode default value
+ $m->setOneofEnum(TestEnum::ZERO);
+ $data = $m->serializeToString();
+ $n = new TestMessage();
+ $n->mergeFromString($data);
+ $this->assertSame("oneof_enum", $n->getMyOneof());
}
public function testPackedEncode()
