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# Copyright 2021 Alexander Huntley
# This file is part of Plots.
# Plots is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# Plots is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with Plots. If not, see <https://www.gnu.org/licenses/>.
from plots.parser import from_latex
from plots.utils import Direction
import plots.formula as f
from tests.fixtures import cursor
def test_insert_empty_super(cursor):
elems = from_latex("x")
cursor.reparent(elems, -1)
cursor.insert_superscript_subscript()
assert elems.to_latex() == r"x^{}"
assert cursor.owner is elems[1].exponent
def test_add_to_super_after(cursor):
elems = from_latex("x^{2}2")
cursor.reparent(elems, -1)
cursor.handle_movement(Direction.LEFT, select=True)
cursor.insert_superscript_subscript()
assert elems.to_latex() == "x^{22}"
assert cursor.owner is elems[1].exponent
def test_add_to_super_after_alternative(cursor):
elems = from_latex("x^{2}2")
cursor.reparent(elems, 2)
cursor.handle_movement(Direction.RIGHT, select=True)
cursor.insert_superscript_subscript()
assert elems.to_latex() == "x^{22}"
assert cursor.owner is elems[1].exponent
def test_add_to_super_before(cursor):
elems = from_latex("xy^{z}")
cursor.reparent(elems, 1)
cursor.handle_movement(Direction.RIGHT, select=True)
cursor.insert_superscript_subscript()
assert elems.to_latex() == "x^{yz}"
assert cursor.owner is elems[1].exponent
def test_add_to_super_before_alternative(cursor):
elems = from_latex("xy^{z}")
cursor.reparent(elems, 2)
cursor.handle_movement(Direction.LEFT, select=True)
cursor.insert_superscript_subscript()
assert elems.to_latex() == "x^{yz}"
assert cursor.owner is elems[1].exponent
def test_move_to_super_before(cursor):
elems = from_latex("x^{2}")
cursor.reparent(elems, 1)
cursor.insert_superscript_subscript()
assert elems.to_latex() == "x^{2}"
assert cursor.owner is elems[1].exponent
def test_delete_super(cursor):
elems = from_latex("x_{4}^{3}")
cursor.reparent(elems[1].exponent, 0)
cursor.backspace(Direction.LEFT)
assert elems.to_latex() == "x_{4}3"
def test_delete_sub(cursor):
elems = from_latex("x_{4}^{3}")
cursor.reparent(elems[1].subscript, 0)
cursor.backspace(Direction.LEFT)
assert elems.to_latex() == "x4^{3}"
def test_add_sub_to_super(cursor):
elems = from_latex("x^{3}")
cursor.reparent(elems, -1)
cursor.insert_superscript_subscript(superscript=False)
assert elems.to_latex() == "x_{}^{3}"
assert cursor.owner is elems[1].subscript
def test_add_super_to_sub(cursor):
elems = from_latex("x_{3}")
cursor.reparent(elems, -1)
cursor.insert_superscript_subscript(superscript=True)
assert elems.to_latex() == "x_{3}^{}"
assert cursor.owner is elems[1].exponent
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