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# Before `make install' is performed this script should be runnable with
# `make test'. After `make install' it should work as `perl test.pl'
#
# In case you're wondering, the curly braces round some variable names
# are to stop interpretation by RCS :-(.
#
######################### We start with some black magic to print on failure.
# Change 1..1 below to 1..last_test_to_print .
# (It may become useful if the test is moved to ./t subdirectory.)
my $VERSION = '1.4';
BEGIN { $| = 1; print "1..11\n"; }
END {print "not ok 1\n" unless $loaded;}
use Log::TraceMessages qw(t d trace dmp);
$loaded = 1;
print 'not ' if ${Log::TraceMessages::VERSION} ne $VERSION;
print "ok 1\n";
######################### End of black magic.
use strict;
use File::Temp qw(tempfile);
my $test_str = 'test < > &';
my $debug = 0;
my $out;
# Test 2 - t() with $On == 1
${Log::TraceMessages::On} = 1;
${Log::TraceMessages::CGI} = 0;
$out = grab_output("t('$test_str')");
print 'not ' if $out->[0] ne '' or $out->[1] ne "$test_str\n";
print "ok 2\n";
# Test 3 - t() with $On == 0
${Log::TraceMessages::On} = 0;
$out = grab_output("t('$test_str')");
print 'not ' if $out->[0] ne '' or $out->[1] ne '';
print "ok 3\n";
# Test 4 - t() with $CGI == 1
${Log::TraceMessages::On} = 1;
${Log::TraceMessages::CGI} = 1;
$out = grab_output("t('$test_str')");
print 'not ' if $out->[0] ne "\n<pre>test < > &</pre>\n"
or $out->[1] ne '';
print "ok 4\n";
# Test 5 - t() with $CGI == 0 after setting a logfile
${Log::TraceMessages::On} = 1;
${Log::TraceMessages::CGI} = 0;
my ($fd, $tmp) = tempfile();
${Log::TraceMessages::Logfile} = $tmp;
$out = grab_output("t('$test_str')");
${Log::TraceMessages::Logfile} = undef;
my $contents = read_file($tmp);
print "contents of $tmp: $contents\n" if $debug;
print 'not ' if $out->[0] ne '' or $out->[1] ne ''
or $contents ne "$test_str\n";
print "ok 5\n";
# On Windows the file must be closed before unlinking, and that
# doesn't happen until the next t().
#
grab_output("t('')");
unlink $tmp or die "cannot unlink $tmp: $!";
# Test 6 - t() with $CGI == 1 after setting a different logfile
${Log::TraceMessages::On} = 1;
${Log::TraceMessages::CGI} = 1;
my ($fd, $tmp) = tempfile();
${Log::TraceMessages::Logfile} = $tmp;
$out = grab_output("t('$test_str')");
${Log::TraceMessages::Logfile} = undef;
my $contents = read_file($tmp);
print "contents of $tmp: $contents\n" if $debug;
print 'not ' if $out->[0] ne '' or $out->[1] ne ''
or $contents ne "\n<pre>test < > &</pre>\n";
print "ok 6\n";
grab_output("t('')"); # Windows - see above
unlink $tmp or die "cannot unlink $tmp: $!";
# Test 7 - quick check that trace() works (no logfile now)
${Log::TraceMessages::On} = 1;
${Log::TraceMessages::CGI} = 0;
$out = grab_output("trace('$test_str')");
print 'not ' if $out->[0] ne '' or $out->[1] ne "$test_str\n";
print "ok 7\n";
# Test 8 - d(). But this is not a full test suite for Data::Dumper.
${Log::TraceMessages::On} = 1;
my $a; eval '$a = ' . d($test_str);
print 'not ' if $a ne $test_str;
print "ok 8\n";
# Test 9 - check that d() does nothing when trace is off
${Log::TraceMessages::On} = 0;
print 'not ' if d($test_str) ne '';
print "ok 9\n";
# Test 10 - quick check that dmp() works
${Log::TraceMessages::On} = 1;
my $a; eval '$a = ' . dmp($test_str);
print 'not ' if $a ne $test_str;
print "ok 10\n";
# Test 11 - check_argv()
${Log::TraceMessages::On} = 0;
my $num_args = @ARGV;
@ARGV = (@ARGV, '--trace');
Log::TraceMessages::check_argv();
print 'not ' if @ARGV != $num_args or not ${Log::TraceMessages::On};
print "ok 11\n";
# grab_output()
#
# Eval some code and return what was printed to stdout and stderr.
#
# Parameters: string of code to eval
#
# Returns: listref of [ stdout text, stderr text ]
#
sub grab_output($) {
die 'usage: grab_stderr(string to eval)' if @_ != 1;
my $code = shift;
my ($fd_o, $tmp_o) = File::Temp::tempfile();
my ($fd_e, $tmp_e) = File::Temp::tempfile();
local *OLDOUT, *OLDERR;
print "running code: $code\n" if $debug;
# Changing $SIG{__DIE__} seems to cause problems elsewhere, even
# if you set it back again or undefine it afterwards. So we use
# this as a replacement for die().
#
sub dy($) { print "$_[0]\n"; print STDERR "$_[0]\n"; exit(1) }
open(OLDOUT, ">&STDOUT") or dy "can't dup stdout: $!";
open(OLDERR, ">&STDERR") or dy "can't dup stderr: $!";
open(STDOUT, ">$tmp_o") or dy "can't open stdout to $tmp_o: $!";
open(STDERR, ">$tmp_e") or dy "can't open stderr to $tmp_e: $!";
eval $code;
close(STDOUT) or dy "cannot close stdout opened to $tmp_o: $!";
close(STDERR) or dy "will anyone ever see this message? $!";
open(STDOUT, ">&OLDOUT") or dy "can't dup stdout back again: $!";
open(STDERR, ">&OLDERR") or dy "can't dup stderr back again: $!";
dy $@ if $@;
local $/ = undef;
open (TMP_O, $tmp_o) or dy "cannot open $tmp_o: $!";
open (TMP_E, $tmp_e) or dy "cannot open $tmp_e: $!";
my $o = <TMP_O>; my $e = <TMP_E>;
close TMP_O or dy "cannot close filehandle opened to $tmp_o: $!";
close TMP_E or dy "cannot close filehandle opened to $tmp_e: $!";
unlink $tmp_o or dy "cannot unlink $tmp_o: $!";
unlink $tmp_e or dy "cannot unlink $tmp_e: $!";
if ($debug) {
print "stdout: $o\n";
print "stderr: $e\n";
}
return [ $o, $e ];
}
# read_file()
#
# Read a file's contents and return them as a string.
#
sub read_file($) {
die 'usage: read_file(filename)' if @_ != 1;
my $f = shift;
my $fh = new FileHandle($f); die "cannot open $f: $!" if not $fh;
local $/ = undef;
my $r = <$fh>;
close $fh or die "cannot close filehandle opened to $f: $!";
return $r;
}
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