def setUp(self):
     self.settings = QgsServerSettings()
     self.testdata_path = unitTestDataPath("qgis_server_settings")

class TestQgsServerSettings(unittest.TestCase):

    def setUp(self):
        self.settings = QgsServerSettings()
        self.testdata_path = unitTestDataPath("qgis_server_settings")

    def tearDown(self):
        pass

    def test_env_parallel_rendering(self):
        env = "QGIS_SERVER_PARALLEL_RENDERING"

        # test parallel rendering value from environment variable
        os.environ[env] = "1"
        self.settings.load()
        self.assertTrue(self.settings.parallelRendering())
        os.environ.pop(env)

        os.environ[env] = "0"
        self.settings.load()
        self.assertFalse(self.settings.parallelRendering())
        os.environ.pop(env)

    def test_env_log_level(self):
        env = "QGIS_SERVER_LOG_LEVEL"

        # test log level value from environment variable
        os.environ[env] = "3"
        self.settings.load()
        self.assertEqual(self.settings.logLevel(), 3)
        os.environ.pop(env)

        os.environ[env] = "1"
        self.settings.load()
        self.assertEqual(self.settings.logLevel(), 1)
        os.environ.pop(env)

    def test_env_log_file(self):
        env = "QGIS_SERVER_LOG_FILE"

        # test parallel rendering value from environment variable
        os.environ[env] = "/tmp/qgisserv.log"
        self.settings.load()
        self.assertEqual(self.settings.logFile(), "/tmp/qgisserv.log")
        os.environ.pop(env)

        os.environ[env] = "/tmp/qserv.log"
        self.settings.load()
        self.assertEqual(self.settings.logFile(), "/tmp/qserv.log")
        os.environ.pop(env)

    def test_env_project_file(self):
        env = "QGIS_PROJECT_FILE"

        # test parallel rendering value from environment variable
        os.environ[env] = "/tmp/myproject.qgs"
        self.settings.load()
        self.assertEqual(self.settings.projectFile(), "/tmp/myproject.qgs")
        os.environ.pop(env)

        os.environ[env] = "/tmp/myproject2.qgs"
        self.settings.load()
        self.assertEqual(self.settings.projectFile(), "/tmp/myproject2.qgs")
        os.environ.pop(env)

    def test_env_max_cache_layers(self):
        env = "MAX_CACHE_LAYERS"

        # test parallel rendering value from environment variable
        os.environ[env] = "3"
        self.settings.load()
        self.assertEqual(self.settings.maxCacheLayers(), 3)
        os.environ.pop(env)

        os.environ[env] = "100"
        self.settings.load()
        self.assertEqual(self.settings.maxCacheLayers(), 100)
        os.environ.pop(env)

    def test_env_max_threads(self):
        env = "QGIS_SERVER_MAX_THREADS"

        # test parallel rendering value from environment variable
        os.environ[env] = "3"
        self.settings.load()
        self.assertEqual(self.settings.maxThreads(), 3)
        os.environ.pop(env)

        os.environ[env] = "5"
        self.settings.load()
        self.assertEqual(self.settings.maxThreads(), 5)
        os.environ.pop(env)

    def test_env_cache_size(self):
        env = "QGIS_SERVER_CACHE_SIZE"

        self.assertEqual(self.settings.cacheSize(), 50 * 1024 * 1024)

        os.environ[env] = "1024"
        self.settings.load()
#.........这里部分代码省略.........