kc3-lang/gnulib/tests/test-pipe-filter-gi2-main.c

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• Hash : 32a72f45
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  Date : 2023-01-01T01:14:21
  

  maint: run 'make update-copyright'
  

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• tests/test-pipe-filter-gi2-main.c

• /* Test harness for pipe-filter-gi.
  
     Copyright (C) 2009-2023 Free Software Foundation, Inc.
     Written by Paolo Bonzini <bonzini@gnu.org>, 2009.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  #include <config.h>
  
  #include "pipe-filter.h"
  
  #include <stdio.h>
  #include <errno.h>
  #include <unistd.h>
  #include <string.h>
  #include <signal.h>
  
  #include "binary-io.h"
  #include "full-write.h"
  #include "macros.h"
  
  /* 0.1 sec pause */
  static void
  small_nap (void)
  {
    usleep (100000);
  }
  
  static char static_buf[5];
  
  static void *
  prepare_read (size_t *num_bytes_p, void *private_data)
  {
    *num_bytes_p = sizeof (static_buf);
    return static_buf;
  }
  
  /* Callback that ignores the data that has been read.  */
  
  static void
  ignore_done_read (void *data_read, size_t num_bytes_read, void *private_data)
  {
  }
  
  /* Callback that outputs the data that has been read.  */
  
  static void
  output_done_read (void *data_read, size_t num_bytes_read, void *private_data)
  {
    full_write (STDOUT_FILENO, data_read, num_bytes_read);
  }
  
  static void
  pipe_filter_gi_write_string (struct pipe_filter_gi *f, const char *string)
  {
    pipe_filter_gi_write (f, string, strlen (string));
  }
  
  int
  main (int argc, char **argv)
  {
    struct pipe_filter_gi *f;
    const char *path[] = { NULL, NULL };
  
    ASSERT (argc == 2);
  
    set_binary_mode (STDOUT_FILENO, O_BINARY);
  
    /* Test writing to a nonexistent program traps sooner or later.  */
    {
      int rc;
  
      path[0] = "/nonexistent/blah";
      f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, true, false,
                                 prepare_read, ignore_done_read, NULL);
      small_nap ();
      rc = pipe_filter_gi_write (f, "", 1);
      ASSERT (rc == 127 || rc == -1);
      rc = pipe_filter_gi_close (f);
      ASSERT (rc == 127 || rc == -1);
      printf ("Test 1 passed.\n");
      fflush (stdout);
    }
  
    /* Test returning the exit status.  */
    {
      path[0] = argv[1];
      f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, false,
                                 prepare_read, ignore_done_read, NULL);
      pipe_filter_gi_write_string (f, "1 -1");
      ASSERT (pipe_filter_gi_close (f) == 1);
      printf ("Test 2 passed.\n");
      fflush (stdout);
    }
  
    /* Same, but test returning the status in pipe_filter_gi_write.  */
    {
      int rc;
  
      path[0] = argv[1];
      f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, false,
                                 prepare_read, ignore_done_read, NULL);
      pipe_filter_gi_write_string (f, "1 -1\n"); /* tell the child to terminate */
      small_nap (); /* let the child terminate */
      rc = pipe_filter_gi_write (f, " ", 1); /* write to a closed pipe */
      ASSERT (rc == -1 && errno == EPIPE);
      /* Closing the filter must report same error again, for consistency with
         pipe_filter_ii_execute.  The subprocess' exit status is not returned.  */
      rc = pipe_filter_gi_close (f);
      ASSERT (rc == -1 && errno == EPIPE);
      printf ("Test 3 passed.\n");
      fflush (stdout);
    }
  
    /* Now test asynchronous I/O.  */
    {
      path[0] = argv[1];
      f = pipe_filter_gi_create ("pipe-filter-test", path[0], path, false, true,
                                 prepare_read, output_done_read, NULL);
      pipe_filter_gi_write_string (f, "1 50\n");
      pipe_filter_gi_write_string (f, "51\n");
      pipe_filter_gi_write_string (f, "100");
      ASSERT (pipe_filter_gi_close (f) == 0);
      printf ("Test 4 passed.\n");
      fflush (stdout);
    }
  
    return 0;
  }
  

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