Add testcase for issue #322

tests/regression/issue_322/SConscript

+# Check that default values with special characters are
+# correctly handled.
+
+Import('env')
+
+env.NanopbProto('defaults')
+
+p = env.Program(["defaults.c",
+                 "defaults.pb.c",
+                 "$COMMON/pb_decode.o",
+                 "$COMMON/pb_common.o"])
+
+env.RunTest(p)
+

tests/regression/issue_322/defaults.c

+#include "defaults.pb.h"
+#include <unittests.h>
+#include <pb_decode.h>
+
+int check_defaults(const DefaultsMsg *msg)
+{
+    int status = 0;
+    
+    TEST(msg->b1[0] == 0xDE && msg->b1[1] == 0xAD && msg->b1[2] == 0x00 &&
+         msg->b1[3] == 0xBE && msg->b1[4] == 0xEF);
+    TEST(msg->b2.bytes[0] == 0xDE && msg->b2.bytes[1] == 0xAD &&
+         msg->b2.bytes[2] == 0x00 && msg->b2.bytes[3] == 0xBE &&
+         msg->b2.bytes[4] == 0xEF && msg->b2.size == 5);
+    TEST(msg->b3.bytes[0] == 0xDE && msg->b3.bytes[1] == 0xAD &&
+         msg->b3.bytes[2] == 0x00 && msg->b3.bytes[3] == 0xBE &&
+         msg->b3.bytes[4] == 0xEF && msg->b2.size == 5);
+    TEST(msg->s1[0] == (char)0xC3 && msg->s1[1] == (char)0xA4 &&
+         msg->s1[2] == (char)0xC3 && msg->s1[3] == (char)0xB6 &&
+         msg->s1[4] == '\0');
+    
+    return status;
+}
+
+int main()
+{
+    int status = 0;
+    
+    {
+        DefaultsMsg msg = DefaultsMsg_init_default;
+        COMMENT("Checking defaults from static initializer");
+        status += check_defaults(&msg);
+    }
+
+    {
+        DefaultsMsg msg = DefaultsMsg_init_zero;
+        pb_istream_t empty = {0,0,0};
+        pb_decode(&empty, DefaultsMsg_fields, &msg);
+        COMMENT("Checking defaults set at runtime");
+        status += check_defaults(&msg);
+    }
+
+    return status;
+}
+

tests/regression/issue_322/defaults.proto

+syntax = "proto2";
+import 'nanopb.proto';
+
+message DefaultsMsg {
+    optional bytes b1 = 1 [default = "\xDE\xAD\x00\xBE\xEF", (nanopb).max_size = 5, (nanopb).fixed_length=true];
+    optional bytes b2 = 2 [default = "\xDE\xAD\x00\xBE\xEF", (nanopb).max_size = 5];
+    optional bytes b3 = 3 [default = "\xDE\xAD\000\xBE\xEF", (nanopb).max_size = 15];
+    optional string s1 = 4 [default = "äö", (nanopb).max_size = 8];
+}
+
+