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import
pytest
from
app
.
expression
import
(
BaseNode
,
BinaryOpNode
,
BinaryOperation
,
Operation
,
UnaryOperation
,
UnitaryOpNode
,
)
from
app
.
expression_parser
import
(
_add_node_to_stack
,
_is_operation
,
_symbol_to_op
,
parse_from_string
,
)
@
pytest
.
mark
.
parametrize
(
"symbol,outcome"
,
[
(
"+"
,
True
),
(
"-"
,
True
),
(
"^"
,
True
),
(
"/"
,
True
),
(
"*"
,
True
),
(
"√"
,
True
),
(
"."
,
False
),
(
" "
,
False
),
(
","
,
False
),
(
"1"
,
False
),
],
)
def
test_is_operation
(
symbol
,
outcome
):
assert
_is_operation
(
symbol
)
==
outcome
@
pytest
.
mark
.
parametrize
(
"symbol,outcome"
,
[
(
"+"
,
BinaryOperation
.
ADD
),
(
"-"
,
BinaryOperation
.
SUBTRACT
),
(
"^"
,
BinaryOperation
.
POW
),
(
"/"
,
BinaryOperation
.
DIVIDE
),
(
"*"
,
BinaryOperation
.
MULTIPLY
),
],
)
def
test_get_op_from_symbol_binary_ops
(
symbol
,
outcome
):
result
=
_symbol_to_op
(
symbol
)
assert
isinstance
(
result
,
Operation
)
assert
result
==
outcome
@
pytest
.
mark
.
parametrize
(
"symbol,is_unary,outcome"
,
[
(
"√"
,
True
,
UnaryOperation
.
SQRT
),
(
"-"
,
True
,
UnaryOperation
.
MINUS
),
(
"-"
,
False
,
BinaryOperation
.
SUBTRACT
),
],
)
def
test_get_op_from_symbol_unary_ops
(
symbol
,
is_unary
,
outcome
):
result
=
_symbol_to_op
(
symbol
,
is_unary
=
is_unary
)
assert
isinstance
(
result
,
Operation
)
assert
result
==
outcome
# @pytest.mark.parametrize(
# "current_stack,new_node,expected",
# [
# ([None], BaseNode(lhs=2), [None, BaseNode(lhs=2)]),
# (
# [None, BaseNode(lhs=2), BinaryOperation.ADD],
# BaseNode(lhs=2),
# [
# None,
# BinaryOpNode(
# op=BinaryOperation.ADD, lhs=BaseNode(lhs=2), rhs=BaseNode(lhs=2)
# ),
# ],
# ),
# (
# [None, UnaryOperation.MINUS],
# BaseNode(lhs=2),
# [None, UnitaryOpNode(lhs=BaseNode(lhs=2), op=UnaryOperation.MINUS)],
# ),
# ],
# )
# def test_add_node_to_stack(current_stack, new_node, expected):
# new_stack = _add_node_to_stack(new_node, current_stack)
# assert new_stack == expected
# @pytest.mark.parametrize(
# "expression, expected",
# [
# ("1", BaseNode(lhs=1)),
# (
# "1+2",
# BinaryOpNode(
# lhs=BaseNode(lhs=1), op=BinaryOperation.ADD, rhs=BaseNode(lhs=2)
# ),
# ),
# (
# "1+2*4",
# BinaryOpNode(
# lhs=BinaryOpNode(
# lhs=BaseNode(lhs=1), op=BinaryOperation.ADD, rhs=BaseNode(lhs=2)
# ),
# op=BinaryOperation.MULTIPLY,
# rhs=BaseNode(lhs=4),
# ),
# ), # This is actually incorrect, but program doesn't handle operation precedence yet
# ],
# )
# def test_parse_expression(expression, expected):
# parsed_expression = parse_from_string(expression)
# assert parsed_expression == expected
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