import unittest

from polymatrix.expressionstate.init.initexpressionstate import init_expression_state
import polymatrix.expression.initexpressionbase


class TestVStack(unittest.TestCase):

    def test_1(self):
        terms1 = {
            (0, 0): {
                ((1, 1),): 1.0,
            }, 
            (1, 0): {
                tuple(): 2.0,
            },
        }

        terms2 = {
            (0, 0): {
                tuple(): 3.0,
            },
            (1, 1): {
                tuple(): 4.0,
            },
        }

        expr = polymatrix.expression.initexpressionbase.init_v_stack_expr(
            underlying=(
                polymatrix.expression.initexpressionbase.init_from_terms_expr(terms=terms1, shape=(2, 2),), 
                polymatrix.expression.initexpressionbase.init_from_terms_expr(terms=terms2, shape=(2, 2),),
            ),
        )

        state = init_expression_state(n_param=2)
        state, val = expr.apply(state)

        data = val.get_poly(0, 0)
        self.assertDictEqual({
            ((1, 1),): 1.0,
        }, data)

        data = val.get_poly(1, 0)
        self.assertDictEqual({
            tuple(): 2.0,
        }, data)

        data = val.get_poly(2, 0)
        self.assertDictEqual({
            tuple(): 3.0,
        }, data)

        data = val.get_poly(3, 1)
        self.assertDictEqual({
            tuple(): 4.0,
        }, data)