# Copyright 2024 (c) Anna Schumaker.
"""Tests our common Thread class."""
import emmental.thread
import threading
import unittest


class TestData(unittest.TestCase):
    """Tests our thread Data class."""

    def test_init_kwargs(self):
        """Tests initializing the data class with keyword args."""
        data = emmental.thread.Data(a=1, b=2)
        self.assertEqual(data.a, 1)
        self.assertEqual(data.b, 2)
        self.assertEqual(repr(data), "Data(a=1, b=2)")

    def test_init_values_dict(self):
        """Test initializing the data class with a dictionary of values."""
        data = emmental.thread.Data({"a": 1, "b": 2})
        self.assertEqual(data.a, 1)
        self.assertEqual(data.b, 2)
        self.assertEqual(repr(data), "Data(a=1, b=2)")

    def test_init_both(self):
        """Test initializing the data class with both."""
        data = emmental.thread.Data({"a": 1, "b": 2}, b=3, c='4')
        self.assertEqual(data.a, 1)
        self.assertEqual(data.b, 3)
        self.assertEqual(data.c, '4')
        self.assertEqual(repr(data), "Data(a=1, b=3, c='4')")

    def test_compare(self):
        """Test comparing two data classes."""
        data1 = emmental.thread.Data({"a": 1, "b": 2})
        data2 = emmental.thread.Data({"c": 3, "d": 4})
        self.assertTrue(data1 == data1)
        self.assertTrue(data1 == {"a": 1, "b": 2})
        self.assertFalse(data1 == data2)
        self.assertFalse(data1 == {"c": 2, "d": 4})
        self.assertFalse(data1 == 3)


class TestThread(unittest.TestCase):
    """Tests our Thread class."""

    def setUp(self):
        """Set up common variables."""
        self.thread = emmental.thread.Thread()

    def tearDown(self):
        """Clean up."""
        self.thread.stop()

    def test_init(self):
        """Check that the Thread was initialized properly."""
        self.assertIsInstance(self.thread, threading.Thread)
        self.assertIsInstance(self.thread.ready, threading.Event)
        self.assertIsInstance(self.thread._condition, threading.Condition)

        self.assertIsNone(self.thread._task)
        self.assertIsNone(self.thread._result)

        self.assertTrue(self.thread.is_alive())
        self.assertTrue(self.thread.ready.is_set())

    def test_set_get_result(self):
        """Test the set_result() and get_result() functions."""
        with unittest.mock.patch.object(self.thread, "do_get_result",
                                        wraps=self.thread.do_get_result) \
                as mock_get_result:
            self.assertIsNone(self.thread.get_result())
            mock_get_result.assert_not_called()

            self.thread.ready.clear()
            self.thread._result = {"res": "abcde"}
            self.assertIsNone(self.thread.get_result())
            mock_get_result.assert_not_called()

            self.thread.set_result(res="fghij")
            self.assertTrue(self.thread.ready.is_set())
            self.assertIsInstance(self.thread._result, emmental.thread.Data)
            self.assertEqual(self.thread._result, {"res": "fghij"})
            self.assertEqual(self.thread.get_result(), {"res": "fghij"})
            self.assertIsNone(self.thread._result)
            mock_get_result.assert_called_with({"res": "fghij"})

            result = {"res1": "klmno", "res2": "pqrst"}
            self.thread.set_result(**result)
            self.assertEqual(self.thread.get_result(other="other", arg="arg"),
                             result)
            mock_get_result.assert_called_with(result,
                                               other="other", arg="arg")

    def test_set_task(self):
        """Test the set_task() function."""
        self.thread._result = "abcde"

        with unittest.mock.patch.object(self.thread, "do_run_task",
                                        wraps=self.thread.do_run_task) \
                as mock_run_task:
            self.thread.set_task(arg="test")
            self.assertIsInstance(self.thread._task, emmental.thread.Data)
            self.assertEqual(self.thread._task, {"arg": "test"})
            self.assertIsNone(self.thread._result)
            self.thread.ready.wait()
            mock_run_task.assert_called_with(self.thread._task)

    def test_stop(self):
        """Test stopping the Thread."""
        self.thread._task = ("test", "task")

        with unittest.mock.patch.object(self.thread, "do_stop") as mock_stop:
            self.thread.stop()
            self.assertFalse(self.thread.is_alive())
            self.assertFalse(self.thread.ready.is_set())
            self.assertIsNone(self.thread._task)
            mock_stop.assert_called()