Disallow --empty with --replace-input (fixes #728)

1 files changed, 6 insertions, 1 deletions

diff --git a/qpdf/qtest/arg-parsing.test b/qpdf/qtest/arg-parsing.test
index 99c48b27..ad6bc0d2 100644
--- a/qpdf/qtest/arg-parsing.test
+++ b/qpdf/qtest/arg-parsing.test
@@ -15,7 +15,7 @@ cleanup();
 
 my $td = new TestDriver('arg-parsing');
 
-my $n_tests = 16;
+my $n_tests = 17;
 
 $td->runtest("required argument",
              {$td->COMMAND => "qpdf --password minimal.pdf"},
@@ -102,6 +102,11 @@ $td->runtest("ignore -- at top level",
              {$td->REGEXP => ".*No syntax or stream encoding errors found.*",
                   $td->EXIT_STATUS => 0},
              $td->NORMALIZE_NEWLINES);
+$td->runtest("empty and replace-input",
+             {$td->COMMAND => "qpdf --empty --replace-input"},
+             {$td->REGEXP => ".*--replace-input may not be used with --empty.*",
+                  $td->EXIT_STATUS => 2},
+             $td->NORMALIZE_NEWLINES);
 
 cleanup();
 $td->report($n_tests);