Import of the watch repository from Pebble

third_party/nanopb/tests/regression/issue_544/submsg_callback.c

@@ -0,0 +1,57 @@
+#include "submsg_callback.pb.h"
+#include <pb_encode.h>
+#include <pb_decode.h>
+#include "unittests.h"
+
+bool msg_callback(pb_istream_t *stream, const pb_field_t *field, void **arg)
+{
+    /* This tests decoding the submessage already in the message level callback. */
+
+    SubMessage *submsg = (SubMessage*)field->pData;
+
+    if (!pb_decode(stream, SubMessage_fields, submsg))
+        PB_RETURN_ERROR(stream, "submsg decode failed");
+    
+    if (submsg->foo != 1234)
+        PB_RETURN_ERROR(stream, "submsg.foo wrong value");
+    
+    return true;
+}
+
+int main()
+{
+    int status = 0;
+    pb_byte_t buf[64];
+    size_t msglen;
+
+    {
+        pb_ostream_t ostream = pb_ostream_from_buffer(buf, sizeof(buf));
+        MyMessage msg = MyMessage_init_zero;
+
+        msg.which_oneof = MyMessage_submsg_tag;
+        msg.oneof.submsg.foo = 1234;
+
+        if (!pb_encode(&ostream, MyMessage_fields, &msg))
+        {
+            fprintf(stderr, "pb_encode() failed: %s\n", PB_GET_ERROR(&ostream));
+            return 1;
+        }
+
+        msglen = ostream.bytes_written;
+        TEST(msglen > 0);
+    }
+
+    {
+        pb_istream_t istream = pb_istream_from_buffer(buf, msglen);
+        MyMessage msg = MyMessage_init_zero;
+        msg.cb_oneof.funcs.decode = msg_callback;
+
+        if (!pb_decode(&istream, MyMessage_fields, &msg))
+        {
+            fprintf(stderr, "pb_decode() failed: %s\n", PB_GET_ERROR(&istream));
+            return 1;
+        }
+    }
+
+    return status;
+}