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#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include "../termkey.h"
#include "taplib.h"

int main(int argc, char *argv[])
{
  int        fd[2];
  TermKey   *tk;
  TermKeyKey key;

  plan_tests(21);

  /* We'll need a real filehandle we can write/read.
   * pipe() can make us one */
  pipe(fd);

  /* Sanitise this just in case */
  putenv("TERM=vt100");

  tk = termkey_new(fd[0], TERMKEY_FLAG_NOTERMIOS);

  is_int(termkey_get_buffer_remaining(tk), 256, "buffer free initially 256");

  is_int(termkey_getkey(tk, &key), TERMKEY_RES_NONE, "getkey yields RES_NONE when empty");

  write(fd[1], "h", 1);

  is_int(termkey_getkey(tk, &key), TERMKEY_RES_NONE, "getkey yields RES_NONE before advisereadable");

  is_int(termkey_advisereadable(tk), TERMKEY_RES_AGAIN, "advisereadable yields RES_AGAIN after h");

  is_int(termkey_get_buffer_remaining(tk), 255, "buffer free 255 after advisereadable");

  is_int(termkey_getkey(tk, &key), TERMKEY_RES_KEY, "getkey yields RES_KEY after h");

  is_int(key.type,           TERMKEY_TYPE_UNICODE, "key.type after h");
  is_int(key.code.codepoint, 'h',                  "key.code.codepoint after h");
  is_int(key.modifiers,      0,                    "key.modifiers after h");
  is_str(key.utf8,           "h",                  "key.utf8 after h");

  is_int(termkey_get_buffer_remaining(tk), 256, "buffer free 256 after getkey");

  is_int(termkey_getkey(tk, &key), TERMKEY_RES_NONE, "getkey yields RES_NONE a second time");

  write(fd[1], "\033O", 2);
  termkey_advisereadable(tk);

  is_int(termkey_get_buffer_remaining(tk), 254, "buffer free 254 after partial write");

  is_int(termkey_getkey(tk, &key), TERMKEY_RES_AGAIN, "getkey yields RES_AGAIN after partial write");

  write(fd[1], "C", 1);
  termkey_advisereadable(tk);

  is_int(termkey_getkey(tk, &key), TERMKEY_RES_KEY, "getkey yields RES_KEY after Right completion");

  is_int(key.type,        TERMKEY_TYPE_KEYSYM,  "key.type after Right");
  is_int(key.code.sym,    TERMKEY_SYM_RIGHT,    "key.code.sym after Right");
  is_int(key.modifiers,   0,                    "key.modifiers after Right");

  is_int(termkey_get_buffer_remaining(tk), 256, "buffer free 256 after completion");

  termkey_stop(tk);

  is_int(termkey_getkey(tk, &key), TERMKEY_RES_ERROR, "getkey yields RES_ERROR after termkey_stop()");
  is_int(errno, EINVAL, "getkey error is EINVAL");

  termkey_destroy(tk);

  return exit_status();
}