#!/usr/bin/env perl

# Copyright (C) 2015 Apple Inc. All rights reserved.
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# Unit tests for webkitdirs::prependToEnvironmentVariableList($$).

use strict;
use warnings;

use Config;
use Test::More;
use webkitdirs;

my @testCases = (
{
    setup => sub { delete $ENV{DYLD_FRAMEWORK_PATH}; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => "/System/Library/PrivateFrameworks",
    description => "Prepend to nonexistent variable",
},
{
    setup => sub { $ENV{DYLD_FRAMEWORK_PATH} = undef; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => "/System/Library/PrivateFrameworks",
    description => "Prepend to undefined variable",
},
{
    setup => sub { $ENV{DYLD_FRAMEWORK_PATH} = ""; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => join($Config{path_sep}, "/System/Library/PrivateFrameworks", ""),
    description => "Prepend to empty path",
},
{
    setup => sub { $ENV{DYLD_FRAMEWORK_PATH} = $Config{path_sep}; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => join($Config{path_sep}, "/System/Library/PrivateFrameworks", "", ""),
    description => "Prepend to empty path with separator",
},
{
    setup => sub { $ENV{DYLD_FRAMEWORK_PATH} = "/System/Library/Frameworks"; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => join($Config{path_sep}, "/System/Library/PrivateFrameworks", "/System/Library/Frameworks"),
    description => "Prepend to single path with no separator",
},
{
    setup => sub { $ENV{DYLD_FRAMEWORK_PATH} = $Config{path_sep} . "/System/Library/Frameworks"; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => join($Config{path_sep}, "/System/Library/PrivateFrameworks", "", "/System/Library/Frameworks"),
    description => "Prepend to single path with separator",
},
{
    setup => sub { $ENV{DYLD_FRAMEWORK_PATH} = "/System/Library/Frameworks" . $Config{path_sep} . "/System/Library/PrivateFrameworks"; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => join($Config{path_sep}, "/System/Library/PrivateFrameworks", "/System/Library/Frameworks", "/System/Library/PrivateFrameworks"),
    description => "Prepend to multiple, duplicate path with no separator",
},
{
    setup => sub { $ENV{DYLD_FRAMEWORK_PATH} = $Config{path_sep} . "/System/Library/Frameworks" . $Config{path_sep} . "/System/Library/PrivateFrameworks"; },
    argName => "DYLD_FRAMEWORK_PATH",
    argValue => "/System/Library/PrivateFrameworks",
    expectedValue => join($Config{path_sep}, "/System/Library/PrivateFrameworks", "", "/System/Library/Frameworks", "/System/Library/PrivateFrameworks"),
    description => "Prepend to multiple, duplicate path with separator",
},
);

plan(tests => 2 * @testCases);

foreach my $testCase (@testCases) {
    local %ENV;
    $testCase->{setup}->();
    my $result = prependToEnvironmentVariableList($testCase->{argName}, $testCase->{argValue});
    is_deeply($result, $testCase->{expectedValue}, "prependToEnvironmentVariableList: $testCase->{description} - return result");
    is_deeply($testCase->{expectedValue}, $ENV{$testCase->{argName}}, "prependToEnvironmentVariableList: $testCase->{description} - environment variable value");
}