def testHomePath(self): p = QgsProject() path_changed_spy = QSignalSpy(p.homePathChanged) self.assertFalse(p.homePath()) self.assertFalse(p.presetHomePath()) # simulate save file tmp_dir = QTemporaryDir() tmp_file = "{}/project.qgs".format(tmp_dir.path()) with open(tmp_file, 'w') as f: pass p.setFileName(tmp_file) # home path should be file path self.assertEqual(p.homePath(), tmp_dir.path()) self.assertFalse(p.presetHomePath()) self.assertEqual(len(path_changed_spy), 1) # manually override home path p.setPresetHomePath('/tmp/my_path') self.assertEqual(p.homePath(), '/tmp/my_path') self.assertEqual(p.presetHomePath(), '/tmp/my_path') self.assertEqual(len(path_changed_spy), 2) # check project scope scope = QgsExpressionContextUtils.projectScope(p) self.assertEqual(scope.variable('project_home'), '/tmp/my_path') # no extra signal if path is unchanged p.setPresetHomePath('/tmp/my_path') self.assertEqual(p.homePath(), '/tmp/my_path') self.assertEqual(p.presetHomePath(), '/tmp/my_path') self.assertEqual(len(path_changed_spy), 2) # setting file name should not affect home path is manually set tmp_file_2 = "{}/project/project2.qgs".format(tmp_dir.path()) os.mkdir(tmp_dir.path() + '/project') with open(tmp_file_2, 'w') as f: pass p.setFileName(tmp_file_2) self.assertEqual(p.homePath(), '/tmp/my_path') self.assertEqual(p.presetHomePath(), '/tmp/my_path') self.assertEqual(len(path_changed_spy), 2) scope = QgsExpressionContextUtils.projectScope(p) self.assertEqual(scope.variable('project_home'), '/tmp/my_path') # clear manual path p.setPresetHomePath('') self.assertEqual(p.homePath(), tmp_dir.path() + '/project') self.assertFalse(p.presetHomePath()) self.assertEqual(len(path_changed_spy), 3) scope = QgsExpressionContextUtils.projectScope(p) self.assertEqual(scope.variable('project_home'), tmp_dir.path() + '/project') # relative path p.setPresetHomePath('../home') self.assertEqual(p.homePath(), tmp_dir.path() + '/home') self.assertEqual(p.presetHomePath(), '../home') self.assertEqual(len(path_changed_spy), 4) scope = QgsExpressionContextUtils.projectScope(p) self.assertEqual(scope.variable('project_home'), tmp_dir.path() + '/home') # relative path, no filename p.setFileName('') self.assertEqual(p.homePath(), '../home') self.assertEqual(p.presetHomePath(), '../home') scope = QgsExpressionContextUtils.projectScope(p) self.assertEqual(scope.variable('project_home'), '../home')