+=head1 FEATURES
+
+=head2 C<run_perl>
+
+=over 4
+
+=item *
+
+Import :
+
+ use VPIT::TestHelpers run_perl => [ $p ]
+
+where :
+
+=over 8
+
+=item -
+
+C<$p> is prefixed to the constants exported by this feature (defaults to C<''>).
+
+=back
+
+=item *
+
+Dependencies :
+
+=over 8
+
+=item -
+
+L<File::Spec>
+
+=back
+
+=item *
+
+Exports :
+
+=over 8
+
+=item -
+
+C<run_perl $code>
+
+=item -
+
+C<run_perl_file $file>
+
+=item -
+
+C<RUN_PERL_FAILED> (possibly prefixed by C<$p>)
+
+=back
+
+=back
+
+=cut
+
+sub fresh_perl_env (&) {
+ my $handler = shift;
+
+ my ($SystemRoot, $PATH) = @ENV{qw<SystemRoot PATH>};
+ my $ld_name = $Config::Config{ldlibpthname};
+ my $ldlibpth = $ENV{$ld_name};
+
+ local %ENV;
+ $ENV{$ld_name} = $ldlibpth if defined $ldlibpth;
+ $ENV{SystemRoot} = $SystemRoot if $^O eq 'MSWin32' and defined $SystemRoot;
+ $ENV{PATH} = $PATH if $^O eq 'cygwin' and defined $PATH;
+
+ my $perl = $^X;
+ unless (-e $perl and -x $perl) {
+ $perl = $Config::Config{perlpath};
+ unless (-e $perl and -x $perl) {
+ return undef;
+ }
+ }
+
+ return $handler->($perl, '-T', map("-I$_", @INC));
+}
+
+sub init_run_perl {
+ my $p = sanitize_prefix(shift);
+
+ # This is only required for run_perl_file(), so it is not needed for the
+ # threads feature which only calls run_perl() - don't forget to update its
+ # requirements if this ever changes.
+ require File::Spec;
+
+ return (
+ run_perl => \&run_perl,
+ run_perl_file => \&run_perl_file,
+ "${p}RUN_PERL_FAILED" => sub () { 'Could not execute perl subprocess' },
+ );
+}
+
+sub run_perl {
+ my $code = shift;
+
+ if ($code =~ /"/) {
+ die 'Double quotes in evaluated code are not portable';
+ }
+
+ fresh_perl_env {
+ my ($perl, @perl_args) = @_;
+ system { $perl } $perl, @perl_args, '-e', $code;
+ };
+}
+
+sub run_perl_file {
+ my $file = shift;
+
+ $file = File::Spec->rel2abs($file);
+ unless (-e $file and -r _) {
+ die 'Could not run perl file';
+ }
+
+ fresh_perl_env {
+ my ($perl, @perl_args) = @_;
+ system { $perl } $perl, @perl_args, $file;
+ };
+}
+
+=head2 C<capture>
+
+=over 4
+
+=item *
+
+Import :
+
+ use VPIT::TestHelpers capture => [ $p ];
+
+where :
+
+=over 8
+
+=item -
+
+C<$p> is prefixed to the constants exported by this feature (defaults to C<''>).
+
+=back
+
+=item *
+
+Dependencies :
+
+=over 8
+
+=item -
+
+Neither VMS nor OS/2
+
+=item -
+
+L<IO::Handle>
+
+=item -
+
+L<IO::Select>
+
+=item -
+
+L<IPC::Open3>
+
+=item -
+
+On MSWin32 : L<Socket>
+
+=back
+
+=item *
+
+Exports :
+
+=over 8
+
+=item -
+
+C<capture @command>
+
+=item -
+
+C<CAPTURE_FAILED $details> (possibly prefixed by C<$p>)
+
+=item -
+
+C<capture_perl $code>
+
+=item -
+
+C<CAPTURE_PERL_FAILED $details> (possibly prefixed by C<$p>)
+
+=back
+
+=back
+
+=cut
+
+sub init_capture {
+ my $p = sanitize_prefix(shift);
+
+ skip_all 'Cannot capture output on VMS' if $^O eq 'VMS';
+ skip_all 'Cannot capture output on OS/2' if $^O eq 'os2';
+
+ load_or_skip_all 'IO::Handle', '0', [ ];
+ load_or_skip_all 'IO::Select', '0', [ ];
+ load_or_skip_all 'IPC::Open3', '0', [ ];
+ if ($^O eq 'MSWin32') {
+ load_or_skip_all 'Socket', '0', [ ];
+ }
+
+ return (
+ capture => \&capture,
+ "${p}CAPTURE_FAILED" => \&capture_failed_msg,
+ capture_perl => \&capture_perl,
+ "${p}CAPTURE_PERL_FAILED" => \&capture_perl_failed_msg,
+ );
+}
+
+# Inspired from IPC::Cmd
+
+sub capture {
+ my @cmd = @_;
+
+ my $want = wantarray;
+
+ my $fail = sub {
+ my $err = $!;
+ my $ext_err = $^O eq 'MSWin32' ? $^E : undef;
+
+ my $syscall = shift;
+ my $args = join ', ', @_;
+
+ my $msg = "$syscall($args) failed: ";
+
+ if (defined $err) {
+ no warnings 'numeric';
+ my ($err_code, $err_str) = (int $err, "$err");
+ $msg .= "$err_str ($err_code)";
+ }
+
+ if (defined $ext_err) {
+ no warnings 'numeric';
+ my ($ext_err_code, $ext_err_str) = (int $ext_err, "$ext_err");
+ $msg .= ", $ext_err_str ($ext_err_code)";
+ }
+
+ die "$msg\n";
+ };
+
+ my ($status, $content_out, $content_err);
+
+ local $@;
+ my $ok = eval {
+ my ($pid, $out, $err);
+
+ if ($^O eq 'MSWin32') {
+ my $pipe = sub {
+ socketpair $_[0], $_[1],
+ &Socket::AF_UNIX, &Socket::SOCK_STREAM, &Socket::PF_UNSPEC
+ or $fail->(qw<socketpair reader writer>);
+ shutdown $_[0], 1 or $fail->(qw<shutdown reader>);
+ shutdown $_[1], 0 or $fail->(qw<shutdown writer>);
+ return 1;
+ };
+ local (*IN_R, *IN_W);
+ local (*OUT_R, *OUT_W);
+ local (*ERR_R, *ERR_W);
+ $pipe->(*IN_R, *IN_W);
+ $pipe->(*OUT_R, *OUT_W);
+ $pipe->(*ERR_R, *ERR_W);
+
+ $pid = IPC::Open3::open3('>&IN_R', '<&OUT_W', '<&ERR_W', @cmd);
+
+ close *IN_W or $fail->(qw<close input>);
+ $out = *OUT_R;
+ $err = *ERR_R;
+ } else {
+ my $in = IO::Handle->new;
+ $out = IO::Handle->new;
+ $out->autoflush(1);
+ $err = IO::Handle->new;
+ $err->autoflush(1);
+
+ $pid = IPC::Open3::open3($in, $out, $err, @cmd);
+
+ close $in;
+ }
+
+ # Forward signals to the child (except SIGKILL)
+ my %sig_handlers;
+ foreach my $s (keys %SIG) {
+ $sig_handlers{$s} = sub {
+ kill "$s" => $pid;
+ $SIG{$s} = $sig_handlers{$s};
+ };
+ }
+ local $SIG{$_} = $sig_handlers{$_} for keys %SIG;
+
+ unless ($want) {
+ close $out or $fail->(qw<close output>);
+ close $err or $fail->(qw<close error>);
+ waitpid $pid, 0;
+ $status = $?;
+ return 1;
+ }
+
+ my $sel = IO::Select->new();
+ $sel->add($out, $err);
+
+ my $fd_out = fileno $out;
+ my $fd_err = fileno $err;
+
+ my %contents;
+ $contents{$fd_out} = '';
+ $contents{$fd_err} = '';
+
+ while (my @ready = $sel->can_read) {
+ for my $fh (@ready) {
+ my $buf;
+ my $bytes_read = sysread $fh, $buf, 4096;
+ if (not defined $bytes_read) {
+ $fail->('sysread', 'fd(' . fileno($fh) . ')');
+ } elsif ($bytes_read) {
+ $contents{fileno($fh)} .= $buf;
+ } else {
+ $sel->remove($fh);
+ close $fh or $fail->('close', 'fd(' . fileno($fh) . ')');
+ last unless $sel->count;
+ }
+ }
+ }
+
+ waitpid $pid, 0;
+ $status = $?;
+
+ if ($^O eq 'MSWin32') {
+ # Manual CRLF translation that couldn't be done with sysread.
+ s/\x0D\x0A/\n/g for values %contents;
+ }
+
+ $content_out = $contents{$fd_out};
+ $content_err = $contents{$fd_err};
+
+ 1;
+ };
+
+ if ("$]" < 5.014 and $ok and ($status >> 8) == 255 and defined $content_err
+ and $content_err =~ /^open3/) {
+ # Before perl commit 8960aa87 (between 5.12 and 5.14), exceptions in open3
+ # could be reported to STDERR instead of being propagated, so work around
+ # this.
+ $ok = 0;
+ $@ = $content_err;
+ }
+
+ if ($ok) {
+ return ($status, $content_out, $content_err);
+ } else {
+ my $err = $@;
+ chomp $err;
+ return (undef, $err);
+ }
+}
+
+sub capture_failed_msg {
+ my $details = shift;
+
+ my $msg = 'Could not capture command output';
+ $msg .= " ($details)" if defined $details;
+
+ return $msg;
+}
+
+sub capture_perl {
+ my $code = shift;
+
+ if ($code =~ /"/) {
+ die 'Double quotes in evaluated code are not portable';
+ }
+
+ fresh_perl_env {
+ my @perl = @_;
+ capture @perl, '-e', $code;
+ };
+}
+
+sub capture_perl_failed_msg {
+ my $details = shift;
+
+ my $msg = 'Could not capture perl output';
+ $msg .= " ($details)" if defined $details;
+
+ return $msg;
+}
+
+=head2 C<threads>
+
+=over 4
+
+=item *
+
+Import :
+
+ use VPIT::TestHelpers threads => [
+ $pkg, $threadsafe_var, $force_var
+ ];
+
+where :
+
+=over 8
+
+=item -
+
+C<$pkg> is the target package name that will be exercised by this test ;
+
+=item -
+
+C<$threadsafe_var> is the name of an optional variable in C<$pkg> that evaluates to true if and only if the module claims to be thread safe (not checked if either C<$threadsafe_var> or C<$pkg> is C<undef>) ;
+
+=item -
+
+C<$force_var> is the name of the environment variable that can be used to force the thread tests (defaults to C<PERL_FORCE_TEST_THREADS>).
+
+=back
+
+=item *
+
+Dependencies :
+
+=over 8
+
+=item -
+
+C<perl> 5.13.4
+
+=item -
+
+L<POSIX>
+
+=item -
+
+L<threads> 1.67
+
+=item -
+
+L<threads::shared> 1.14
+
+=back
+
+=item *
+
+Exports :
+
+=over 8
+
+=item -
+
+C<spawn $coderef>
+
+=back
+
+=item *
+
+Notes :
+
+=over 8
+
+=item -
+
+C<< exit => 'threads_only' >> is passed to C<< threads->import >>.
+
+=back
+
+=back
+
+=cut
+
+sub init_threads {
+ my ($pkg, $threadsafe_var, $force_var) = @_;
+
+ skip_all 'This perl wasn\'t built to support threads'
+ unless $Config::Config{useithreads};
+
+ if (defined $pkg and defined $threadsafe_var) {
+ my $threadsafe;
+ # run_perl() doesn't actually require anything
+ my $stat = run_perl("require POSIX; require $pkg; exit($threadsafe_var ? POSIX::EXIT_SUCCESS() : POSIX::EXIT_FAILURE())");
+ if (defined $stat) {
+ require POSIX;
+ my $res = $stat >> 8;
+ if ($res == POSIX::EXIT_SUCCESS()) {
+ $threadsafe = 1;
+ } elsif ($res == POSIX::EXIT_FAILURE()) {
+ $threadsafe = !1;
+ }
+ }
+ if (not defined $threadsafe) {
+ skip_all "Could not detect if $pkg is thread safe or not";
+ } elsif (not $threadsafe) {
+ skip_all "This $pkg is not thread safe";
+ }
+ }
+
+ $force_var = 'PERL_FORCE_TEST_THREADS' unless defined $force_var;
+ my $force = $ENV{$force_var} ? 1 : !1;
+ skip_all 'perl 5.13.4 required to test thread safety'
+ unless $force or "$]" >= 5.013_004;
+
+ unless ($INC{'threads.pm'}) {
+ my $test_module;
+ if ($INC{'Test/Leaner.pm'}) {
+ $test_module = 'Test::Leaner';
+ } elsif ($INC{'Test/More.pm'}) {
+ $test_module = 'Test::More';
+ }
+ die "$test_module was loaded too soon" if defined $test_module;
+ }
+
+ load_or_skip_all 'threads', $force ? '0' : '1.67', [
+ exit => 'threads_only',
+ ];
+ load_or_skip_all 'threads::shared', $force ? '0' : '1.14', [ ];
+
+ diag "Threads testing forced by \$ENV{$force_var}" if $force;
+
+ return spawn => \&spawn;
+}
+
+sub spawn {
+ local $@;
+ my @diag;
+ my $thread = eval {
+ local $SIG{__WARN__} = sub { push @diag, "Thread creation warning: @_" };
+ threads->create(@_);
+ };
+ push @diag, "Thread creation error: $@" if $@;
+ diag @diag;
+ return $thread ? $thread : ();
+}
+
+=head2 C<usleep>
+
+=over 4
+
+=item *
+
+Import :
+
+ use VPIT::TestHelpers 'usleep' => [ @impls ];
+
+where :
+
+=over 8
+
+=item -
+
+C<@impls> is the list of desired implementations (which may be C<'Time::HiRes'>, C<'select'> or C<'sleep'>), in the order they should be checked.
+When the list is empty, it defaults to all of them.
+
+=back
+
+=item *
+
+Dependencies : none
+
+=item *
+
+Exports :
+
+=over 8
+
+=item -
+
+C<usleep $microseconds>
+
+=back
+
+=back
+
+=cut
+
+sub init_usleep {
+ my (@impls) = @_;
+
+ my %impls = (
+ 'Time::HiRes' => sub {
+ if (do { local $@; eval { require Time::HiRes; 1 } }) {
+ defined and diag "Using usleep() from Time::HiRes $_"
+ for $Time::HiRes::VERSION;
+ return \&Time::HiRes::usleep;
+ } else {
+ return undef;
+ }
+ },
+ 'select' => sub {
+ if ($Config::Config{d_select}) {
+ diag 'Using select()-based fallback usleep()';
+ return sub ($) {
+ my $s = $_[0];
+ my $r = 0;
+ while ($s > 0) {
+ my ($found, $t) = select(undef, undef, undef, $s / 1e6);
+ last unless defined $t;
+ $t = int($t * 1e6);
+ $s -= $t;
+ $r += $t;
+ }
+ return $r;
+ };
+ } else {
+ return undef;
+ }
+ },
+ 'sleep' => sub {
+ diag 'Using sleep()-based fallback usleep()';
+ return sub ($) {
+ my $ms = int $_[0];
+ my $s = int($ms / 1e6) + ($ms % 1e6 == 0 ? 0 : 1);
+ my $t = sleep $s;
+ return $t * 1e6;
+ };
+ },
+ );
+
+ @impls = qw<Time::HiRes select sleep> unless @impls;
+
+ my $usleep;
+ for my $impl (@impls) {
+ next unless defined $impl and $impls{$impl};
+ $usleep = $impls{$impl}->();
+ last if defined $usleep;
+ }
+
+ skip_all "Could not find a suitable usleep() implementation among: @impls"
+ unless $usleep;
+
+ return usleep => $usleep;
+}
+
+=head1 CLASSES
+
+=head2 C<VPIT::TestHelpers::Guard>
+
+Syntax :
+
+ {
+ my $guard = VPIT::TestHelpers::Guard->new($coderef);
+ ...
+ } # $codref called here
+
+=cut
+
projects / perl / modules / IPC-MorseSignals.git / commitdiff