# Copyright 2013 The Flutter Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import unittest

import os
import imp

SKY_TOOLS = os.path.dirname(os.path.abspath(__file__))
gn = imp.load_source('gn', os.path.join(SKY_TOOLS, 'gn'))


class GNTestCase(unittest.TestCase):

  def _expect_build_dir(self, arg_list, expected_build_dir):
    args = gn.parse_args(['gn'] + arg_list)
    self.assertEquals(gn.get_out_dir(args), expected_build_dir)

  def test_get_out_dir(self):
    self._expect_build_dir(['--debug'], 'out/Debug')
    self._expect_build_dir(['--release'], 'out/Release')
    self._expect_build_dir(['--ios'], 'out/ios_Debug')
    self._expect_build_dir(['--ios'], 'out/ios_Debug_extension_safe')
    self._expect_build_dir(['--ios', '--release'], 'out/ios_Release')
    self._expect_build_dir(['--ios'], 'out/ios_Release_extension_safe')
    self._expect_build_dir(['--android'], 'out/android_Debug')
    self._expect_build_dir(['--android', '--release'], 'out/android_Release')

  def _gn_args(self, arg_list):
    args = gn.parse_args(['gn'] + arg_list)
    return gn.to_gn_args(args)

  def test_to_gn_args(self):
    # This would not necessarily be true on a 32-bit machine?
    self.assertEquals(
        self._gn_args(['--ios', '--simulator'])['target_cpu'], 'x64'
    )
    self.assertEquals(self._gn_args(['--ios'])['target_cpu'], 'arm')

  def test_cannot_use_android_and_enable_unittests(self):
    with self.assertRaises(SystemExit):
      self._gn_args(['--android', '--enable-unittests'])

  def test_cannot_use_ios_and_enable_unittests(self):
    with self.assertRaises(SystemExit):
      self._gn_args(['--ios', '--enable-unittests'])


if __name__ == '__main__':
  unittest.main()