Improve proto3 unit test

Make sure we actually include the proto3 generated header and
test nested submessages

Makefile.am

@@ -193,6 +193,9 @@ check_PROGRAMS += \
 TESTS += \
 	t/generated-code3/test-generated-code3
 
+t_generated_code3_test_generated_code3_CPPFLAGS = \
+	-DPROTO3
+
 t_generated_code3_test_generated_code3_LDADD = \
 	protobuf-c/libprotobuf-c.la
 

t/generated-code/test-generated-code.c

@@ -1,10 +1,17 @@
+#ifdef PROTO3
+#include "t/test-proto3.pb-c.h"
+#else
 #include "t/test.pb-c.h"
+#endif
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
 
-int main()
+int main(void)
 {
+  Foo__Person__PhoneNumber__Comment comment = FOO__PERSON__PHONE_NUMBER__COMMENT__INIT;
+  Foo__Person__PhoneNumber phone = FOO__PERSON__PHONE_NUMBER__INIT;
+  Foo__Person__PhoneNumber *phone_numbers[1];
   Foo__Person person = FOO__PERSON__INIT;
   Foo__Person *person2;
   unsigned char simple_pad[8];
@@ -12,21 +19,43 @@ int main()
   unsigned char *packed;
   ProtobufCBufferSimple bs = PROTOBUF_C_BUFFER_SIMPLE_INIT (simple_pad);
 
+  comment.comment = "protobuf-c guy";
+
+  phone.number = "1234";
+#ifndef PROTO3
+  phone.has_type = 1;
+#endif
+  phone.type = FOO__PERSON__PHONE_TYPE__WORK;
+  phone.comment = &comment;
+
+  phone_numbers[0] = &phone;
+
   person.name = "dave b";
   person.id = 42;
+  person.n_phone = 1;
+  person.phone = phone_numbers;
+
   size = foo__person__get_packed_size (&person);
   packed = malloc (size);
   assert (packed);
+
   size2 = foo__person__pack (&person, packed);
+
   assert (size == size2);
   foo__person__pack_to_buffer (&person, &bs.base);
   assert (bs.len == size);
   assert (memcmp (bs.data, packed, size) == 0);
+
   PROTOBUF_C_BUFFER_SIMPLE_CLEAR (&bs);
+
   person2 = foo__person__unpack (NULL, size, packed);
   assert (person2 != NULL);
   assert (person2->id == 42);
   assert (strcmp (person2->name, "dave b") == 0);
+  assert (person2->n_phone == 1);
+  assert (strcmp (person2->phone[0]->number, "1234") == 0);
+  assert (person2->phone[0]->type == FOO__PERSON__PHONE_TYPE__WORK);
+  assert (strcmp (person2->phone[0]->comment->comment, "protobuf-c guy") == 0);
 
   foo__person__free_unpacked (person2, NULL);
   free (packed);

t/test-proto3.proto

@@ -14,8 +14,13 @@ message Person {
   }
 
   message PhoneNumber {
+    message Comment {
+      string comment = 1;
+    }
+
     string number = 1;
     PhoneType type = 2;
+    Comment comment = 3;
   }
 
   repeated PhoneNumber phone = 4;

t/test.proto

@@ -12,8 +12,13 @@ message Person {
   }
 
   message PhoneNumber {
+    message Comment {
+      required string comment = 1;
+    }
+
     required string number = 1;
     optional PhoneType type = 2 [default = HOME];
+    optional Comment comment = 3;
   }
 
   repeated PhoneNumber phone = 4;