diff --git a/tests/fuzz/onefile.c b/tests/fuzz/onefile.c
new file mode 100644
index 0000000..caf3ca5
--- /dev/null
+++ b/tests/fuzz/onefile.c
@@ -0,0 +1,50 @@
+#include <stdint.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
+
+int main(int argc, char** argv)
+{
+    FILE * fp;
+    uint8_t *Data;
+    size_t Size;
+
+    if (argc != 2) {
+        return 1;
+    }
+    //opens the file, get its size, and reads it into a buffer
+    fp = fopen(argv[1], "rb");
+    if (fp == NULL) {
+        return 2;
+    }
+    if (fseek(fp, 0L, SEEK_END) != 0) {
+        fclose(fp);
+        return 2;
+    }
+    Size = ftell(fp);
+    if (Size == (size_t) -1) {
+        fclose(fp);
+        return 2;
+    }
+    if (fseek(fp, 0L, SEEK_SET) != 0) {
+        fclose(fp);
+        return 2;
+    }
+    Data = malloc(Size);
+    if (Data == NULL) {
+        fclose(fp);
+        return 2;
+    }
+    if (fread(Data, Size, 1, fp) != 1) {
+        fclose(fp);
+        return 2;
+    }
+
+    //lauch fuzzer
+    LLVMFuzzerTestOneInput(Data, Size);
+    fclose(fp);
+    return 0;
+}
+