#!@PERL@
#
# Run unit tests.
#
# Syntax:
#          All: run-tests.pl
#     All in file: run-tests.pl file
#     Nth in file: run-tests.pl file N
#
use strict;
use POSIX qw(WIFEXITED WEXITSTATUS WIFSIGNALED WTERMSIG);
use File::Basename qw(basename dirname);
use FileHandle;
use IPC::Open2 qw(open2);

my @TYPES = qw(tfn op action);
my $TEST = "./msc_test";
my $SCRIPT = basename($0);
my $SCRIPTDIR = dirname($0);
my $PASSED = 0;
my $TOTAL = 0;
my $DEBUG = $ENV{MSC_TEST_DEBUG} || 0;

if (defined $ARGV[0]) {
    runfile(dirname($ARGV[0]), basename($ARGV[0]), $ARGV[1]);
    done();
}

for my $type (sort @TYPES) {
    my $dir = "$SCRIPTDIR/$type";
    my @cfg = ();

    # Get test names
    opendir(DIR, "$dir") or quit(1, "Failed to open \"$dir\": $!");
    @cfg = grep { /\.t$/ && -f "$dir/$_" } readdir(DIR);
    closedir(DIR);

    for my $cfg (sort @cfg) {
        runfile($dir, $cfg);
    }

}
done();


sub runfile {
    my($dir, $cfg, $testnum) = @_;
    my $fn = "$dir/$cfg";
    my @data = ();
    my $edata;
    my @C = ();
    my @test = ();
    my $teststr;
    my $n = 0;
    my $pass = 0;

    open(CFG, "<$fn") or quit(1, "Failed to open \"$fn\": $!");
    @data = <CFG>;
    
    $edata = q/@C = (/ . join("", @data) . q/)/;
    eval $edata;
    quit(1, "Failed to read test data \"$cfg\": $@") if ($@);

    unless (@C) {
        msg("\nNo tests defined for $fn");
        return;
    }

    msg("\nLoaded ".@C." tests from $fn");
    for my $t (@C) {
        $n++;
        next if (defined $testnum and $n != $testnum);

        my %t = %{$t || {}};
        my $id = sprintf("%6d", $n);
        my $in = (exists($t{input}) and defined($t{input})) ? $t{input} : "";
        my $out;
        my $test_in = new FileHandle();
        my $test_out = new FileHandle();
        my $test_pid;
        my $rc = 0;
        my $param;

        if ($t{type} eq "tfn") {
            $param = escape($t{output});
        }
        elsif ($t{type} eq "op") {
            $param = escape($t{param});
        }
        elsif ($t{type} eq "action") {
            $param = escape($t{param});
        }
        else {
            quit(1, "Unknown type \"$t{type}\" - should be one of: " . join(",",@TYPES));
        }

        @test = ("-t", $t{type}, "-n", $t{name}, "-p", $param, "-D", "$DEBUG", (exists($t{ret}) ? ("-r", $t{ret}) : ()), (exists($t{iterations}) ? ("-I", $t{iterations}) : ()), (exists($t{prerun}) ? ("-P", $t{prerun}) : ()));
        $teststr = "$TEST " . join(" ", map { "\"$_\"" } @test);
        $test_pid = open2($test_out, $test_in, $TEST, @test) or quit(1, "Failed to execute test: $teststr\": $!");
        print $test_in "$in";
        close $test_in;
        $out = join("\\n", split(/\n/, <$test_out>));
        close $test_out;
        waitpid($test_pid, 0);

        $rc = $?;
        if ( WIFEXITED($rc) ) {
            $rc = WEXITSTATUS($rc);
        }
        elsif( WIFSIGNALED($rc) ) {
            msg("Test exited with signal " . WTERMSIG($rc) . ".");
            msg("Executed: $teststr");
            $rc = -1;
        }
        else {
            msg("Test exited with unknown error.");
            $rc = -1;
        }

        if ($rc == 0) {
            $pass++;
        }

        msg(sprintf("%s) %s \"%s\"%s: %s%s", $id, $t{type}, $t{name}, (exists($t{comment}) ? " $t{comment}" : ""), ($rc ? "failed" : "passed"), ((defined($out) && $out ne "")? " ($out)" : "")));
        
    }

    $TOTAL += $testnum ? 1 : $n;
    $PASSED += $pass;

    msg(sprintf("Passed: %2d; Failed: %2d", $pass, $testnum ? (1 - $pass) : ($n - $pass)));
}

sub escape {
    my @new = ();
    for my $c (split(//, $_[0])) {
        push @new, ((ord($c) >= 0x20 and ord($c) <= 0x7e) ? $c : sprintf("\\x%02x", ord($c)));
    }
    join('', @new);
}

sub msg {
    print STDOUT "@_\n" if (@_);
}

sub quit {
    my($ec,$msg) = @_;
    $ec = 0 unless (defined $_[0]);

    msg("$msg") if (defined $msg);

    exit $ec;
}

sub done {
    if ($PASSED != $TOTAL) {
        quit(1, "\n$PASSED/$TOTAL tests passed.");
    }

    quit(0, "\nAll tests passed ($TOTAL).");
}