basic

实战Linux编程的原代码,希望对学驱动的人能有所帮助

#!/bin/sh
# -*-perl-*-

: ${PERL=perl}
: ${srcdir=.}

case "$PERL" in
  *'missing perl')
    echo 1>&2 "$0: configure didn't find a usable version of Perl," \
      "so can't run this test"
    exit 77
    ;;
esac

d=$srcdir/..
exec $PERL -w -I$d -MFetish -- - << \EOF
require 5.003;
use strict;

(my $program_name = $0) =~ s|.*/||;

# Turn off localisation of executable's ouput.
@ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;

my $prog = $ENV{PROG} || die "$0: \$PROG not specified in environment\n";

my @Tests =
    (
     ['a', '5 + 6', {OUT => '11'}],
     ['b', '5 - 6', {OUT => '-1'}],
     ['c', '5 \* 6', {OUT => '30'}],
     ['d', '100 / 6', {OUT => '16'}],
     ['e', '100 % 6', {OUT => '4'}],

     ['paren1', '\( 100 % 6 \)', {OUT => '4'}],
     ['paren2', '\( 100 % 6 \) - 8', {OUT => '-4'}],
     ['paren3', '9 / \( 100 % 6 \) - 8', {OUT => '-6'}],
     ['paren4', '9 / \( \( 100 % 6 \) - 8 \)', {OUT => '-2'}],
     ['paren5', '9 + \( 100 % 6 \)', {OUT => '13'}],

     # Before 2.0.12, this would output `1'.
     ['00', '00 \< 0!', {OUT => '0'}, {EXIT => 1}],

     # This evoked a syntax error diagnostic before 2.0.12.
     ['minus2', '-- 2 + 2', {OUT => '4'}],

     # This erroneously succeeded and output `3' before 2.0.12.
     ['fail-a', '3 + -', {ERR => "$prog: non-numeric argument\n"},
      {EXIT => 2}],
    );

# Append a newline to end of each expected `OUT' string.
my $t;
foreach $t (@Tests)
  {
    my $arg1 = $t->[1];
    my $e;
    foreach $e (@$t)
      {
	$e->{OUT} .= "\n"
	  if ref $e eq 'HASH' and exists $e->{OUT};
      }
  }

my $save_temps = $ENV{SAVE_TEMPS};
my $verbose = $ENV{VERBOSE};

my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
exit $fail;
EOF