[PATCH] tests: avoid false failures on OpenBSD 5.7

[Pádraig Brady]

* tests/du/threshold.sh: Homogenize getopt error messages.
* tests/misc/numfmt.pl: Likewise.
* tests/mv/i-3.sh: Skip on *BSD not just FreeBSD.
---
 tests/du/threshold.sh | 6 ++++--
 tests/misc/numfmt.pl  | 3 ++-
 tests/mv/i-3.sh       | 2 +-
 3 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/tests/du/threshold.sh b/tests/du/threshold.sh
index 4ce4498..a4e488a 100755
--- a/tests/du/threshold.sh
+++ b/tests/du/threshold.sh
@@ -102,9 +102,11 @@ du --threshold= a > out 2>&1 && fail=1
 compare exp out || fail=1
 
 # Exercise a bad argument: no argument.
-du --threshold > out 2>&1 && fail=1
+du --threshold > out.tmp 2>&1 && fail=1
+sed 's/argument.*/argument/; s/option.*requires/option requires/' \
+  < out.tmp > out || framework_failure_
 cat <<EOF > exp
-du: option '--threshold' requires an argument
+du: option requires an argument
 Try 'du --help' for more information.
 EOF
 compare exp out || fail=1
diff --git a/tests/misc/numfmt.pl b/tests/misc/numfmt.pl
index fcda1ce..0e4dc79 100755
--- a/tests/misc/numfmt.pl
+++ b/tests/misc/numfmt.pl
@@ -582,8 +582,9 @@ my @Tests =
 
      # Invalid parameters
      ['help-1', '--foobar',
-             {ERR=>"$prog: unrecognized option '--foobar'\n" .
+             {ERR=>"$prog: unrecognized option\n" .
                    "Try '$prog --help' for more information.\n"},
+             {ERR_SUBST=>"s/option.*/option/; s/unknown/unrecognized/"},
              {EXIT=>1}],
 
      ## Format string - check error detection
diff --git a/tests/mv/i-3.sh b/tests/mv/i-3.sh
index 77d4a44..5dba1fe 100755
--- a/tests/mv/i-3.sh
+++ b/tests/mv/i-3.sh
@@ -23,7 +23,7 @@ require_controlling_input_terminal_
 skip_if_root_
 trap '' TTIN # Ignore SIGTTIN
 
-test "$(uname -s)" = FreeBSD && skip_ "known spurious failure on FreeBSD"
+uname -s | grep 'BSD$' && skip_ 'known spurious failure on *BSD'
 
 touch f g h i || framework_failure_
 chmod 0 g i || framework_failure_
-- 
2.4.1