1 files changed, 101 insertions, 0 deletions
diff --git a/src/test-pipe.c b/src/test-pipe.c
new file mode 100644
index 00000000..2e3d1441
--- /dev/null
+++ b/src/test-pipe.c
@@ -0,0 +1,101 @@
+/* Test of create_pipe_bidi/wait_subprocess.
+   Copyright (C) 2009 Free Software Foundation, Inc.
+
+   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, 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, write to the Free Software Foundation,
+   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+#include <config.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <error.h>
+#include <pipe.h>
+#include <wait-process.h>
+
+const char* program_name = NULL;
+
+static void
+xfclose (FILE *ptr)
+{
+  if (!ptr)
+    return;
+
+  if (ferror (ptr))
+    error (EXIT_FAILURE, 0, "I/O error");
+
+  if (fclose (ptr))
+    error (EXIT_FAILURE, errno, "fclose");
+}
+
+static void
+test_pipe (void)
+{
+  int fd[2];
+  char const *argv[9];
+  pid_t pid;
+  char buf[BUFSIZ];
+
+  /* Set up child.  */
+  {
+    int i = 0;
+    char const *p = getenv ("M4");
+    char const *m4 = p ? p : "m4";
+    argv[i++] = m4;
+    argv[i++] = NULL;
+    assert (i <= sizeof argv / sizeof *argv);
+  }
+  pid = create_pipe_bidi(argv[0], argv[0], (char **) argv,
+                         false, true, true, fd);
+  if (pid < 0)
+    error (EXIT_FAILURE, errno, "create_pipe_bidi");
+
+  /* Push child's input.  */
+  {
+    FILE *out = fdopen (fd[1], "w");
+    if (! out)
+      error (EXIT_FAILURE, errno, "fdopen");
+    fprintf (out, "define(`a', `b')dnl\n");
+    fprintf (out, "define(`b', `c')dnl\n");
+    fprintf (out, "a\n");
+    xfclose (out);
+  }
+
+  /* Get child's output.  */
+  {
+    FILE* in = fdopen (fd[0], "r");
+    if (! in)
+      error (EXIT_FAILURE, errno, "fdopen");
+    if (!fgets (buf, sizeof buf, in))
+      error (EXIT_FAILURE, 0, "fgets");
+    xfclose (in);
+  }
+
+  /* Wait for child.  */
+  wait_subprocess (pid, argv[0], true, false, false, true, 0);
+
+  /* Check the result.  */
+  assert (! strcmp (buf, "c\n"));
+}
+
+int
+main (int argc, const char *argv[])
+{
+  program_name = argv[0];
+  test_pipe ();
+  return 0;
+}