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#!/usr/bin/env python3
#
# Copyright 2018 - The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Unittests for project_file_gen."""

import copy
import os
import shutil
import unittest

from unittest import mock

from aidegen import constant
from aidegen import unittest_constants
from aidegen.lib import project_file_gen
from atest import module_info


# pylint: disable=protected-access
class AidegenProjectFileGenUnittest(unittest.TestCase):
    """Unit tests for project_file_gen.py."""

    maxDiff = None
    _TEST_DATA_PATH = unittest_constants.TEST_DATA_PATH
    _ANDROID_PROJECT_PATH = os.path.join(_TEST_DATA_PATH, 'android_project')
    _PROJECT_PATH = os.path.join(_TEST_DATA_PATH, 'project')
    _ANDROID_FACET_SAMPLE = os.path.join(_TEST_DATA_PATH, 'android_facet.iml')
    _PROJECT_FACET_SAMPLE = os.path.join(_TEST_DATA_PATH, 'project_facet.iml')
    _MODULE_DEP_SAMPLE = os.path.join(_TEST_DATA_PATH, 'module_dependency.iml')
    _IML_SAMPLE = os.path.join(_TEST_DATA_PATH, 'test.iml')
    _CLASSPATH_SAMPLE = os.path.join(_TEST_DATA_PATH, 'eclipse.classpath')
    _DEPENDENCIES_IML_SAMPLE = os.path.join(_TEST_DATA_PATH, 'dependencies.iml')
    _MODULE_XML_SAMPLE = os.path.join(_TEST_DATA_PATH, 'modules.xml')
    _VCS_XML_SAMPLE = os.path.join(_TEST_DATA_PATH, 'vcs.xml')
    _IML_PATH = os.path.join(_ANDROID_PROJECT_PATH, 'android_project.iml')
    _DEPENDENCIES_IML_PATH = os.path.join(_ANDROID_PROJECT_PATH,
                                          'dependencies.iml')
    _IDEA_PATH = os.path.join(_ANDROID_PROJECT_PATH, '.idea')
    _MODULE_PATH = os.path.join(_IDEA_PATH, 'modules.xml')
    _VCS_PATH = os.path.join(_IDEA_PATH, 'vcs.xml')
    _SOURCE_SAMPLE = os.path.join(_TEST_DATA_PATH, 'source.iml')
    _LOCAL_PATH_TOKEN = '@LOCAL_PATH@'
    _AOSP_FOLDER = '/aosp'
    _JAR_DEP_LIST = ['test1.jar', 'test2.jar']
    _TEST_SOURCE_LIST = [
        'a/b/c/d', 'a/b/c/d/e', 'a/b/c/d/e/f', 'a/b/c/d/f', 'e/f/a', 'e/f/b/c',
        'e/f/g/h'
    ]
    _ANDROID_SOURCE_DICT = {
        'test_data/project/level11/level21': True,
        'test_data/project/level11/level22/level31': False,
        'test_data/project/level12/level22': False,
    }
    _ANDROID_SOURCE_RELATIVE_PATH = 'test_data/project'
    _SAMPLE_CONTENT_LIST = ['a/b/c/d', 'e/f']
    _SAMPLE_TRIMMED_SOURCE_LIST = ['a/b/c/d', 'e/f/a', 'e/f/b/c', 'e/f/g/h']

    def test_handle_facet_for_android(self):
        """Test _handle_facet with android project."""
        template = project_file_gen._read_file_content(
            project_file_gen._TEMPLATE_IML_PATH)
        android_facet = project_file_gen._handle_facet(
            template, self._ANDROID_PROJECT_PATH)
        sample_android_facet = project_file_gen._read_file_content(
            self._ANDROID_FACET_SAMPLE)
        self.assertEqual(android_facet, sample_android_facet)

    def test_handle_facet_for_normal(self):
        """Test _handle_facet with normal module."""
        template = project_file_gen._read_file_content(
            project_file_gen._TEMPLATE_IML_PATH)
        project_facet = project_file_gen._handle_facet(template,
                                                       self._PROJECT_PATH)
        sample_project_facet = project_file_gen._read_file_content(
            self._PROJECT_FACET_SAMPLE)
        self.assertEqual(project_facet, sample_project_facet)

    def test_handle_module_dependency(self):
        """Test _module_dependency."""
        module_dependency = project_file_gen._read_file_content(
            project_file_gen._TEMPLATE_IML_PATH)
        module_dependency = module_dependency.replace(
            project_file_gen._MODULE_DEP_TOKEN, '')
        correct_module_dep = project_file_gen._read_file_content(
            self._MODULE_DEP_SAMPLE)
        self.assertEqual(correct_module_dep, module_dependency)

    def test_trim_same_root_source(self):
        """Test _trim_same_root_source."""
        url_list = project_file_gen._trim_same_root_source(
            self._TEST_SOURCE_LIST[:])
        self.assertEqual(url_list, self._SAMPLE_TRIMMED_SOURCE_LIST)

    def test_handle_source_folder(self):
        """Test _handle_source_folder."""
        template = project_file_gen._read_file_content(
            project_file_gen._TEMPLATE_IML_PATH)
        source = project_file_gen._handle_source_folder(
            self._AOSP_FOLDER, template,
            copy.deepcopy(self._ANDROID_SOURCE_DICT), True,
            self._ANDROID_SOURCE_RELATIVE_PATH)
        sample_source = project_file_gen._read_file_content(self._SOURCE_SAMPLE)
        self.assertEqual(source, sample_source)

    def test_generate_iml(self):
        """Test _generate_iml."""
        try:
            iml_path, dependencies_iml_path = project_file_gen._generate_iml(
                self._AOSP_FOLDER, self._ANDROID_PROJECT_PATH,
                copy.deepcopy(self._ANDROID_SOURCE_DICT), self._JAR_DEP_LIST,
                self._ANDROID_SOURCE_RELATIVE_PATH)
            test_iml = project_file_gen._read_file_content(iml_path)
            sample_iml = project_file_gen._read_file_content(self._IML_SAMPLE)
        finally:
            os.remove(iml_path)
            os.remove(dependencies_iml_path)
        self.assertEqual(test_iml, sample_iml)

    def test_generate_modules_xml(self):
        """Test _generate_modules_xml."""
        try:
            project_file_gen._generate_modules_xml(self._ANDROID_PROJECT_PATH)
            test_module = project_file_gen._read_file_content(self._MODULE_PATH)
        finally:
            shutil.rmtree(self._IDEA_PATH)
        sample_module = project_file_gen._read_file_content(
            self._MODULE_XML_SAMPLE)
        self.assertEqual(test_module, sample_module)

    def test_generate_vcs_xml(self):
        """Test _generate_vcs_xml."""
        try:
            git_path = os.path.join(self._ANDROID_PROJECT_PATH,
                                    project_file_gen._GIT_FOLDER_NAME)
            os.mkdir(git_path)
            project_file_gen._generate_vcs_xml(self._ANDROID_PROJECT_PATH)
            test_vcs = project_file_gen._read_file_content(self._VCS_PATH)
        finally:
            shutil.rmtree(self._IDEA_PATH)
            shutil.rmtree(git_path)
        sample_vcs = project_file_gen._read_file_content(self._VCS_XML_SAMPLE)
        # The sample must base on the real path.
        sample_vcs = sample_vcs.replace(self._LOCAL_PATH_TOKEN,
                                        self._ANDROID_PROJECT_PATH)
        self.assertEqual(test_vcs, sample_vcs)

    def test_get_uniq_iml_name(self):
        """Test the unique name cache mechanism.

        By using the path data in module info json as input, if the count of
        name data set is the same as sub folder path count, then it means
        there's no duplicated name, the test PASS.
        """
        # Add following test path
        test_paths = {
            'cts/tests/tests/app',
            'cts/tests/app',
            'cts/tests/app/app1/../app',
            'cts/tests/app/app2/../app',
            'cts/tests/app/app3/../app',
            'frameworks/base/tests/xxxxxxxxxxxx/base',
            'frameworks/base',
            'external/xxxxx-xxx/robolectric',
            'external/robolectric',
        }
        mod_info = module_info.ModuleInfo()
        test_paths.update(mod_info._get_path_to_module_info(
            mod_info.name_to_module_info).keys())
        print('\n{} {}.'.format('Test_paths length:', len(test_paths)))

        path_list = []
        for k in test_paths:
            path_list.append(k)
        print('{} {}.'.format('path list with length:', len(path_list)))

        names = [project_file_gen.get_unique_iml_name(f) for f in path_list]
        print('{} {}.'.format('Names list with length:', len(names)))

        self.assertEqual(len(names), len(path_list))
        dic = {}
        for i, path in enumerate(path_list):
            dic[names[i]] = path
        print('{} {}.'.format('The size of name set is:', len(dic)))
        self.assertEqual(len(dic), len(path_list))

    def test_copy_project_files(self):
        """Test _copy_constant_project_files."""
        project_file_gen._copy_constant_project_files(
            self._ANDROID_PROJECT_PATH)
        self.assertTrue(
            os.path.isfile(
                os.path.join(self._IDEA_PATH,
                             project_file_gen._CODE_STYLE_FOLDER,
                             'codeStyleConfig.xml')))
        self.assertTrue(
            os.path.isfile(
                os.path.join(self._IDEA_PATH,
                             project_file_gen._COPYRIGHT_FOLDER,
                             'Apache_2.xml')))
        self.assertTrue(
            os.path.isfile(
                os.path.join(self._IDEA_PATH,
                             project_file_gen._COPYRIGHT_FOLDER,
                             'profiles_settings.xml')))
        shutil.rmtree(self._IDEA_PATH)

    def test_generate_classpath(self):
        """Test _generate_classpath."""
        try:
            classpath = project_file_gen._generate_classpath(
                self._ANDROID_PROJECT_PATH,
                copy.deepcopy(list(sorted(self._ANDROID_SOURCE_DICT))),
                self._JAR_DEP_LIST)
            test_iml = project_file_gen._read_file_content(classpath)
            sample_iml = project_file_gen._read_file_content(
                self._CLASSPATH_SAMPLE)
        finally:
            os.remove(classpath)
        self.assertEqual(test_iml, sample_iml)

    @mock.patch('os.symlink')
    @mock.patch.object(os.path, 'exists')
    def test_generate_git_ignore(self, mock_path_exist, mock_link):
        """Test _generate_git_ignore."""
        mock_path_exist.return_value = True
        project_file_gen._generate_git_ignore(constant.AIDEGEN_ROOT_PATH)
        self.assertFalse(mock_link.called)


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