import unittest
from modelverse_kernel.main import ModelverseKernel
from utils import execute_until_finished, MvSWrapper

class TestInput(unittest.TestCase):
    def setUp(self):
        self.mvs = MvSWrapper()
        self.root = self.mvs.execute("RR", [])[0]
        self.mvk = ModelverseKernel(self.root)

    def test_input(self):
        root = self.root
        task_root = self.mvs.execute("CN", [])[0]
        task_frame = self.mvs.execute("CN", [])[0]
        phase = self.mvs.execute("CNV", ["init"])[0]
        inst = self.mvs.execute("CNV", [{"value":"input"}])[0]
        old_retval = self.mvs.execute("CN", [])[0]
        input_queue_first = self.mvs.execute("CN", [])[0]
        input_queue_next = self.mvs.execute("CN", [])[0]
        value = self.mvs.execute("CN", [])[0]

        self.mvs.execute("CD", [root, "task_1", task_root])
        self.mvs.execute("CD", [task_root, "frame", task_frame])
        self.mvs.execute("CD", [task_frame, "phase", phase])
        self.mvs.execute("CD", [task_frame, "IP", inst])
        self.mvs.execute("CD", [task_frame, "returnvalue", old_retval])
        self.mvs.execute("CD", [task_root, "input", input_queue_first])
        self.mvs.execute("CD", [input_queue_first, "value", value])
        self.mvs.execute("CD", [input_queue_first, "next", input_queue_next])

        # Do the invocation until it returns None
        execute_until_finished(self.mvk, self.mvs)

        # Execution of the command finished, so the MvS should be in the correct new state right now
        self.assertEquals(self.mvs.execute("RD", [root, "task_1"])[0], task_root)
        self.assertEquals(self.mvs.execute("RD", [task_root, "frame"])[0], task_frame)
        self.assertEquals(self.mvs.execute("RV", [self.mvs.execute("RD", [task_frame, "phase"])[0]])[0], "finish")
        self.assertEquals(self.mvs.execute("RD", [task_frame, "IP"])[0], inst)
        self.assertEquals(self.mvs.execute("RD", [task_frame, "returnvalue"])[0], value)
        self.assertEquals(self.mvs.execute("RD", [task_root, "input"])[0], input_queue_next)

    def test_input_none(self):
        root = self.root
        task_root = self.mvs.execute("CN", [])[0]
        task_frame = self.mvs.execute("CN", [])[0]
        phase = self.mvs.execute("CNV", ["init"])[0]
        inst = self.mvs.execute("CNV", [{"value":"input"}])[0]
        old_retval = self.mvs.execute("CN", [])[0]
        input_queue_first = self.mvs.execute("CN", [])[0]

        self.mvs.execute("CD", [root, "task_1", task_root])
        self.mvs.execute("CD", [task_root, "frame", task_frame])
        self.mvs.execute("CD", [task_frame, "phase", phase])
        self.mvs.execute("CD", [task_frame, "IP", inst])
        self.mvs.execute("CD", [task_frame, "returnvalue", old_retval])
        self.mvs.execute("CD", [task_root, "input", input_queue_first])

        # Do the invocation until it returns None
        execute_until_finished(self.mvk, self.mvs)

        # Execution of the command finished, so the MvS should be in the correct new state right now
        self.assertEquals(self.mvs.execute("RD", [root, "task_1"])[0], task_root)
        self.assertEquals(self.mvs.execute("RD", [task_root, "frame"])[0], task_frame)
        self.assertEquals(self.mvs.execute("RV", [self.mvs.execute("RD", [task_frame, "phase"])[0]])[0], "init")
        self.assertEquals(self.mvs.execute("RD", [task_frame, "IP"])[0], inst)
        self.assertEquals(self.mvs.execute("RD", [task_frame, "returnvalue"])[0], old_retval)
        self.assertEquals(self.mvs.execute("RD", [task_root, "input"])[0], input_queue_first)