Expanding the tests to better cover decoding from memory buffer.

git-svn-id: https://svn.kapsi.fi/jpa/nanopb@1090 e3a754e5-d11d-0410-8d38-ebb782a927b9

tests/test_decode1.c

@@ -57,33 +57,16 @@ bool print_person(pb_istream_t *stream)
     return true;
 }
 
-/* This binds the pb_istream_t to stdin */
-bool callback(pb_istream_t *stream, uint8_t *buf, size_t count)
-{
-    FILE *file = (FILE*)stream->state;
-    bool status;
-    
-    if (buf == NULL)
-    {
-       /* Skipping data */
-        while (count-- && fgetc(file) != EOF);
-        return count == 0;
-    }
-    
-    status = (fread(buf, 1, count, file) == count);
-    
-    if (feof(file))
-        stream->bytes_left = 0;
-    
-    return status;
-}
-
 int main()
 {
-    /* Maximum size is specified to prevent infinite length messages from
-     * hanging this in the fuzz test.
-     */
-    pb_istream_t stream = {&callback, stdin, 10000};
+    /* Read the data into buffer */
+    uint8_t buffer[512];
+    size_t count = fread(buffer, 1, sizeof(buffer), stdin);
+    
+    /* Construct a pb_istream_t for reading from the buffer */
+    pb_istream_t stream = pb_istream_from_buffer(buffer, count);
+    
+    /* Decode and print out the stuff */
     if (!print_person(&stream))
     {
         printf("Parsing failed.\n");