'''

@author: olivier.massot, 2019
'''
from qgis.core import QgsProject
import unittest


class SchemaTest(unittest.TestCase):
    SCHEMA_NAME = ""
    PROJECT_FILE = ""
    
    @classmethod
    def setUpClass(cls):
        if cls.PROJECT_FILE:
            cls._open_qgs_project(cls.PROJECT_FILE)
            
    @classmethod
    def tearDownClass(cls):
        if cls.PROJECT_FILE:
            cls._close_qgs_project()
            
    @classmethod
    def _open_qgs_project(cls, filename):
        QgsProject.instance().clear()
        ok = QgsProject.instance().read(filename)
        if not ok:
            raise IOError("Error while loading the qgis project {}: {}".format(cls.PROJECT_FILE, QgsProject.instance().error()))

    @classmethod
    def _close_qgs_project(cls):
        QgsProject.instance().clear()