Reorganize directories (#3462)

* 🚚 move files
* 🚚 rename doc folder to docs
* 🚚 rename test folder to tests

tests/thirdparty/Fuzzer/test/CustomMutatorTest.cpp

@@ -0,0 +1,38 @@
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+
+// Simple test for a cutom mutator.
+#include <assert.h>
+#include <cstdint>
+#include <cstdlib>
+#include <cstddef>
+#include <iostream>
+
+#include "FuzzerInterface.h"
+
+static volatile int Sink;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  assert(Data);
+  if (Size > 0 && Data[0] == 'H') {
+    Sink = 1;
+    if (Size > 1 && Data[1] == 'i') {
+      Sink = 2;
+      if (Size > 2 && Data[2] == '!') {
+        std::cout << "BINGO; Found the target, exiting\n";
+        exit(1);
+      }
+    }
+  }
+  return 0;
+}
+
+extern "C" size_t LLVMFuzzerCustomMutator(uint8_t *Data, size_t Size,
+                                          size_t MaxSize, unsigned int Seed) {
+  static bool Printed;
+  if (!Printed) {
+    std::cerr << "In LLVMFuzzerCustomMutator\n";
+    Printed = true;
+  }
+  return LLVMFuzzerMutate(Data, Size, MaxSize);
+}