1 files changed, 67 insertions, 0 deletions
diff --git a/support/support_capture_subprocess_check.c b/support/support_capture_subprocess_check.c
new file mode 100644
index 0000000000..708c89f331
--- /dev/null
+++ b/support/support_capture_subprocess_check.c
@@ -0,0 +1,67 @@
+/* Verify capture output from a subprocess.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <support/capture_subprocess.h>
+#include <support/check.h>
+
+static void
+print_context (const char *context, bool *failed)
+{
+  if (*failed)
+    /* Do not duplicate message.  */
+    return;
+  support_record_failure ();
+  printf ("error: subprocess failed: %s\n", context);
+}
+
+void
+support_capture_subprocess_check (struct support_capture_subprocess *proc,
+                                  const char *context, int status,
+                                  int allowed)
+{
+  TEST_VERIFY ((allowed & sc_allow_none)
+               || (allowed & sc_allow_stdout)
+               || (allowed & sc_allow_stderr));
+  TEST_VERIFY (!((allowed & sc_allow_none)
+                 && ((allowed & sc_allow_stdout)
+                     || (allowed & sc_allow_stderr))));
+
+  bool failed = false;
+  if (proc->status != status)
+    {
+      print_context (context, &failed);
+      printf ("error:   expected exit status: %d\n", status);
+      printf ("error:   actual exit status:   %d\n", status);
+    }
+  if (!(allowed & sc_allow_stdout) && proc->out.length != 0)
+    {
+      print_context (context, &failed);
+      printf ("error:   unexpected output from subprocess\n");
+      fwrite (proc->out.buffer, proc->out.length, 1, stdout);
+      puts ("\n");
+    }
+  if (!(allowed & sc_allow_stderr) && proc->err.length != 0)
+    {
+      print_context (context, &failed);
+      printf ("error:   unexpected error output from subprocess\n");
+      fwrite (proc->err.buffer, proc->err.length, 1, stdout);
+      puts ("\n");
+    }
+}