def test_subtracting_one(self) -> None:
e = BinaryExpr(
NumberExpr(10, 11, 0, 10),
BinaryOp("-"),
NumberExpr(100, 101, 1, 10),
)
assert expr_add_one(e) == NumberExpr(10, 11, 0, 10)
def test_non_decimal_number(self, display_base: int) -> None:
e = NumberExpr(100, 103, 123, display_base)
assert expr_add_one(e) == BinaryExpr(
NumberExpr(100, 103, 123, display_base),
BinaryOp("+"),
NumberExpr(100, 100, 1, 10),
)
def test_subtracting_decimal_number(self) -> None:
e = BinaryExpr(
NumberExpr(10, 11, 0, 10),
BinaryOp("-"),
NumberExpr(100, 103, 123, 10),
)
assert expr_add_one(e) == BinaryExpr(
NumberExpr(10, 11, 0, 10),
BinaryOp("-"),
NumberExpr(100, 103, 122, 10),
)
def test_other_values(self, expr: Expr) -> None:
assert expr_add_one(expr) == BinaryExpr(
expr,
BinaryOp("+"),
NumberExpr(10, 10, 1, 10),
)
def test_decimal_number(self) -> None:
e = NumberExpr(100, 103, 123, 10)
assert expr_add_one(e) == NumberExpr(100, 103, 124, 10)