cr-connect-workflow/tests/test_workflow_processor.py

import string
import random

from crc import session
from crc.api.rest_exception import RestException
from crc.models.file import FileModel, FileDataModel
from crc.models.study import StudyModel
from crc.models.workflow import WorkflowSpecModel, WorkflowStatus
from crc.services.FileService import FileService
from tests.base_test import BaseTest
from crc.services.workflow_processor import WorkflowProcessor


class TestWorkflowProcessor(BaseTest):

    def _randomString(self, stringLength=10):
        """Generate a random string of fixed length """
        letters = string.ascii_lowercase
        return ''.join(random.choice(letters) for i in range(stringLength))

    def _populate_form_with_random_data(self, task):
        form_data = {}
        for field in task.task_spec.form.fields:
            form_data[field.id] = self._randomString()
        if task.data is None:
            task.data = {}
        task.data.update(form_data)

    def test_create_and_complete_workflow(self):
        self.load_example_data()
        workflow_spec_model = session.query(WorkflowSpecModel).filter_by(id="random_fact").first()
        study = session.query(StudyModel).first()
        processor = WorkflowProcessor.create(study.id, workflow_spec_model.id)
        self.assertEqual(study.id, processor.bpmn_workflow.data[WorkflowProcessor.STUDY_ID_KEY])
        self.assertIsNotNone(processor)
        self.assertEqual(WorkflowStatus.user_input_required, processor.get_status())
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(1, len(next_user_tasks))
        task = next_user_tasks[0]
        self.assertEqual("Task_User_Select_Type", task.get_name())
        model = {"Fact.type": "buzzword"}
        if task.data is None:
            task.data = {}
        task.data.update(model)
        processor.complete_task(task)
        self.assertEqual(WorkflowStatus.waiting, processor.get_status())
        processor.do_engine_steps()
        self.assertEqual(WorkflowStatus.complete, processor.get_status())
        data = processor.get_data()
        self.assertIsNotNone(data)
        self.assertIn("details", data)

    def test_workflow_with_dmn(self):
        self.load_example_data()
        study = session.query(StudyModel).first()
        files = session.query(FileModel).filter_by(workflow_spec_id='decision_table').all()
        self.assertEqual(2, len(files))
        workflow_spec_model = session.query(WorkflowSpecModel).filter_by(id="decision_table").first()
        processor = WorkflowProcessor.create(study.id, workflow_spec_model.id)
        self.assertEqual(WorkflowStatus.user_input_required, processor.get_status())
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(1, len(next_user_tasks))
        task = next_user_tasks[0]
        self.assertEqual("get_num_presents", task.get_name())
        model = {"num_presents": 1}
        if task.data is None:
            task.data = {}
        task.data.update(model)
        processor.complete_task(task)
        processor.do_engine_steps()
        data = processor.get_data()
        self.assertIsNotNone(data)
        self.assertIn("message", data)
        self.assertEqual("Oh, Ginger.", data.get('message'))

    def test_workflow_with_parallel_forms(self):
        self.load_example_data()
        workflow_spec_model = session.query(WorkflowSpecModel).filter_by(id="parallel_tasks").first()
        study = session.query(StudyModel).first()
        processor = WorkflowProcessor.create(study.id, workflow_spec_model.id)
        self.assertEqual(WorkflowStatus.user_input_required, processor.get_status())
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(4, len(next_user_tasks))
        self._populate_form_with_random_data(next_user_tasks[0])
        self._populate_form_with_random_data(next_user_tasks[1])
        self._populate_form_with_random_data(next_user_tasks[2])
        self._populate_form_with_random_data(next_user_tasks[3])
        processor.complete_task(next_user_tasks[0])
        processor.complete_task(next_user_tasks[1])
        processor.complete_task(next_user_tasks[2])
        processor.complete_task(next_user_tasks[3])
        # There are another 4 tasks to complete (each task, had a follow up task in the parallel list)
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(4, len(next_user_tasks))
        self._populate_form_with_random_data(next_user_tasks[0])
        self._populate_form_with_random_data(next_user_tasks[1])
        self._populate_form_with_random_data(next_user_tasks[2])
        self._populate_form_with_random_data(next_user_tasks[3])
        processor.complete_task(next_user_tasks[0])
        processor.complete_task(next_user_tasks[1])
        processor.complete_task(next_user_tasks[2])
        processor.complete_task(next_user_tasks[3])
        processor.do_engine_steps()
        self.assertTrue(processor.bpmn_workflow.is_completed())

    def test_workflow_processor_knows_the_text_task_even_when_parallel(self):
        self.load_example_data()
        study = session.query(StudyModel).first()
        workflow_spec_model = session.query(WorkflowSpecModel).filter_by(id="parallel_tasks").first()
        processor = WorkflowProcessor.create(study.id, workflow_spec_model.id)
        self.assertEqual(WorkflowStatus.user_input_required, processor.get_status())
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(4, len(next_user_tasks))
        self.assertEqual(next_user_tasks[0], processor.next_task(), "First task in list of 4")

        # Complete the third open task, so do things out of order
        # this should cause the system to recommend the first ready task that is a
        # child of the last completed task.
        task = next_user_tasks[2]
        self._populate_form_with_random_data(task)
        processor.complete_task(task)
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(processor.bpmn_workflow.last_task, task)
        self.assertEqual(4, len(next_user_tasks))
        self.assertEqual(task.children[0], processor.next_task())

    def test_workflow_with_bad_expression_raises_sensible_error(self):
        self.load_example_data()

        workflow_spec_model = self.load_test_spec("invalid_expression")
        study = session.query(StudyModel).first()
        processor = WorkflowProcessor.create(study.id, workflow_spec_model.id)
        processor.do_engine_steps()
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(1, len(next_user_tasks))
        self._populate_form_with_random_data(next_user_tasks[0])
        processor.complete_task(next_user_tasks[0])
        with self.assertRaises(RestException) as context:
            processor.do_engine_steps()
        self.assertEqual("invalid_expression", context.exception.payload['code'])

    def test_workflow_with_docx_template(self):
        self.load_example_data()
        study = session.query(StudyModel).first()
        workflow_spec_model = self.load_test_spec("docx")
        files = session.query(FileModel).filter_by(workflow_spec_id='docx').all()
        self.assertEqual(2, len(files))
        workflow_spec_model = session.query(WorkflowSpecModel).filter_by(id="docx").first()
        processor = WorkflowProcessor.create(study.id, workflow_spec_model.id)
        self.assertEqual(WorkflowStatus.user_input_required, processor.get_status())
        next_user_tasks = processor.next_user_tasks()
        self.assertEqual(1, len(next_user_tasks))
        task = next_user_tasks[0]
        self.assertEqual("task_gather_information", task.get_name())
        self._populate_form_with_random_data(task)
        processor.complete_task(task)

        files = session.query(FileModel).filter_by(study_id=study.id, workflow_id=processor.get_workflow_id()).all()
        self.assertEqual(0, len(files))
        processor.do_engine_steps()
        files = session.query(FileModel).filter_by(study_id=study.id, workflow_id=processor.get_workflow_id()).all()
        self.assertEqual(1, len(files), "The task should create a new file.")
        file_data = session.query(FileDataModel).filter(FileDataModel.file_model_id == files[0].id).first()
        self.assertIsNotNone(file_data.data)
        self.assertTrue(len(file_data.data) > 0)
        # Not going any farther here, assuming this is tested in libraries correctly.