[
  {
    "function_name": "usage",
    "function_signature": "void usage (int status)",
    "include_line": "#include \"../tests/echo/tests_for_usage.c\""
  },
  {
    "function_name": "hextobin",
    "function_signature": "static int hextobin (unsigned char c)",
    "include_line": "#include \"../tests/echo/tests_for_hextobin.c\""
  }
]