#!/usr/bin/perl -w

# Copyright (C) 2010, 2011, 2012 Apple Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.

use strict;
use warnings;

use File::Basename;
use FindBin;
use Getopt::Long qw(:config pass_through);
use IPC::Open3;
use lib $FindBin::Bin;
use webkitdirs;
use VCSUtils;

sub buildTestTool();
sub dumpTestsBySuite(\@);
sub listAllTests();
sub runTest($$$);
sub runTestsBySuite(\@$);
sub prepareEnvironmentForRunningTestTool();
sub testToolPath();

# Defined in VCSUtils.
sub possiblyColored($$);

# Timeout for individual test, in sec
my $timeout = 10;

my $showHelp = 0;
my $verbose = 0;
my $dumpTests = 0;
my $build = 1;
my $root;
my $buildDefault = $build ? "build" : "do not build";
my @testsFailed;
my @testsTimedOut;

my $programName = basename($0);
my $usage = <<EOF;
Usage: $programName [options] [suite or test prefixes]
  --help                Show this help message
  -v|--verbose          Verbose output
  -d|--dump-tests       Dump the names of testcases without running them
  --[no-]build          Build (or do not build) unit tests prior to running (default: $buildDefault)
  --root=               Path to the pre-built root containing TestWebKitAPI
EOF

GetOptions(
    'help' => \$showHelp,
    'verbose|v' => \$verbose,
    'dump|d' => \$dumpTests,
    'build!' => \$build,
    'root=s' => \$root
);

if ($showHelp) {
   print STDERR $usage;
   exit 1;
}

setConfiguration();

setConfigurationProductDir(Cwd::abs_path($root)) if (defined($root));

buildTestTool() if $build && !defined($root);
setPathForRunningWebKitApp(\%ENV);
my @testsToRun = listAllTests();

@testsToRun = grep { my $test = $_; grep { $test =~ m/^\Q$_\E/ } @ARGV; } @testsToRun if @ARGV;

if ($dumpTests) {
    dumpTestsBySuite(@testsToRun);
    exit 0;
}

exit runTestsBySuite(@testsToRun, $verbose);

sub isSupportedPlatform()
{
    return isAppleMacWebKit() || isAppleWinWebKit();
}

sub dumpTestsBySuite(\@)
{
    my ($tests) = @_;
    print "Dumping test cases\n";
    print "------------------\n";
    my $lastSuite = "";
    for my $suiteAndTest (sort @$tests) {
        my ($suite, $test) = split(/\./, $suiteAndTest);
        if ($lastSuite ne $suite) {
            $lastSuite = $suite;
            print "$suite:\n";
        }
        print "   $test\n";
    }
    print "------------------\n";
}

sub runTestsBySuite(\@$)
{
    my ($tests, $verbose) = @_;
    my $anyFailures = 0;
    my $lastSuite = "";
    for my $suiteAndTest (sort @$tests) {
        my ($suite, $test) = split(/\./, $suiteAndTest);
        if ($lastSuite ne $suite) {
            $lastSuite = $suite;
            print "Suite: $suite\n" unless $verbose;
        }
        my $failed = runTest($suite, $test, $verbose);
        $anyFailures ||= $failed;
    }
    
    if ($verbose) {
        if (@testsFailed) {
            print "Tests that failed:\n";
            for my $test (@testsFailed) {
                print "  $test\n";
            }
        }
        if (@testsTimedOut) {
            print "Tests that timed out:\n";
            for my $test (@testsTimedOut) {
                print "  $test\n";
            }
        }
    }
    return $anyFailures;
}

sub runTest($$$)
{
    my ($suite, $testName, $verbose) = @_;
    my $test = $suite . "." . $testName;

    my $gtestArg = "--gtest_filter=" . $test;

    print "    Test: $testName -> " unless $verbose;

    my $result = 0;
    my $timedOut = 0;

    die "run-api-tests is not supported on this platform.\n" unless isSupportedPlatform();

    prepareEnvironmentForRunningTestTool();

    local *DEVNULL;
    my ($childIn, $childOut, $childErr);
    if ($verbose) {
        $childOut = ">&STDERR";
        $childErr = ">&STDERR";
    } else {
        open(DEVNULL, ">", File::Spec->devnull()) or die "Failed to open /dev/null";
        $childOut = ">&DEVNULL";
        $childErr = ">&DEVNULL";
    }

    my $pid;
    if (isAppleMacWebKit() && architecture()) {
        $pid = open3($childIn, $childOut, $childErr, "arch", "-" . architecture(), testToolPath(), $gtestArg, @ARGV) or die "Failed to run test: $test.";
    } else {
        $pid = open3($childIn, $childOut, $childErr, testToolPath(), $gtestArg, @ARGV) or die "Failed to run test: $test.";
    }

    close($childIn);
    close($childOut);
    close($childErr);
    close(DEVNULL) unless ($verbose);
    eval {
        local $SIG{ALRM} = sub { die "alarm\n" };
        alarm $timeout;
        waitpid($pid, 0);
        alarm 0;
        $result = $?;
    };
    if ($@) {
        die unless $@ eq "alarm\n";
        kill SIGTERM, $pid or kill SIGKILL, $pid;
        $timedOut = 1;
    }

    if ($result) {
        push @testsFailed, $test;
    }
    if ($timedOut) {
        push @testsTimedOut, $test;
        print possiblyColored("bold yellow", "Timeout"), "\n";
    } elsif (!$verbose) {
        if ($result) {
            print possiblyColored("bold red", "Failed"), "\n";
        } else {
            print possiblyColored("bold green", "Passed"), "\n";
        }
    }

    return $timedOut || $result;
}

sub listAllTests()
{
    my @toolOutput;
    my $timedOut;

    die "run-api-tests is not supported on this platform.\n" unless isSupportedPlatform();

    prepareEnvironmentForRunningTestTool();

    local *DEVNULL;
    my ($childIn, $childOut, $childErr);
    if ($verbose) {
        $childErr = ">&STDERR";
    } else {
        open(DEVNULL, ">", File::Spec->devnull()) or die "Failed to open /dev/null";
        $childErr = ">&DEVNULL";
    }

    my $pid;
    if (isAppleMacWebKit() && architecture()) {
        $pid = open3($childIn, $childOut, $childErr, "arch", "-" . architecture(), testToolPath(), "--gtest_list_tests") or die "Failed to build list of tests!";
    } else {
        $pid = open3($childIn, $childOut, $childErr, testToolPath(), "--gtest_list_tests") or die "Failed to build list of tests!";
    }

    close($childIn);
    @toolOutput = <$childOut>;
    close($childOut);
    close($childErr);
    close(DEVNULL) unless ($verbose);

    waitpid($pid, 0);
    my $result = $?;

    if ($result) {
        print STDERR "Failed to build list of tests!\n";
        exit exitStatus($result);
    }

    my @tests = ();
    my $suite;
    for my $line (@toolOutput) {
       $line =~ s/[\r\n]*$//;
       if ($line =~ m/\.$/) {
          $suite = $line; # "SuiteName."
       } else {
          # Disabling WebKit2 API test on Windows since we will be disabling WebKit2 on Windows.
          next if (isAppleWinWebKit() && $suite =~ m/WebKit2*/);       
          $line =~ s/^\s*//; # "TestName"
          push @tests, $suite . $line; # "SuiteName.TestName"
        }
    }

    return @tests;
}

sub buildTestTool()
{
    my $originalCwd = getcwd();

    chdirWebKit();

    my $buildTestTool = "build-api-tests";
    print STDERR "Running $buildTestTool\n";

    local *DEVNULL;
    my ($childIn, $childOut, $childErr);
    if ($verbose) {
        # When not quiet, let the child use our stdout/stderr.
        $childOut = ">&STDOUT";
        $childErr = ">&STDERR";
    } else {
        open(DEVNULL, ">", File::Spec->devnull()) or die "Failed to open /dev/null";
        $childOut = ">&DEVNULL";
        $childErr = ">&DEVNULL";
    }

    my @args = argumentsForConfiguration();
    my $pathToBuildTestTool = File::Spec->catfile("Tools", "Scripts", $buildTestTool);
    my $buildProcess = open3($childIn, $childOut, $childErr, "perl", $pathToBuildTestTool, @args) or die "Failed to run " . $buildTestTool;

    close($childIn);
    close($childOut);
    close($childErr);
    close(DEVNULL) unless ($verbose);

    waitpid($buildProcess, 0);
    my $buildResult = $?;

    if ($buildResult) {
        print STDERR "Compiling TestWebKitAPI failed!\n";
        exit exitStatus($buildResult);
    }

    chdir $originalCwd;
}

sub prepareEnvironmentForRunningTestTool()
{
    return unless isAppleMacWebKit();

    $ENV{DYLD_FRAMEWORK_PATH} = productDir();
    $ENV{WEBKIT_UNSET_DYLD_FRAMEWORK_PATH} = "YES";
}

sub testToolPath()
{
    my $path = File::Spec->catfile(productDir(), "TestWebKitAPI");
    return $path unless isAppleWinWebKit();

    my $suffix;
    if (configurationForVisualStudio() eq "Debug_All") {
        $suffix = "_debug";
    } else {
        $suffix = "";
    }
    return "$path$suffix.exe";
}