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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/>.
import pytest
import plots.elements as e
from plots.parser import from_latex
from plots.cursor import Cursor
import plots.data
import plots.utils
from tests.fixtures import cursor
def do_convert_specials(name):
elems = from_latex(name)
cursor = Cursor()
cursor.reparent(elems, -1)
elems.convert_specials(cursor)
return elems
@pytest.mark.parametrize("fn", plots.data.FUNCTIONS)
def test_convert_specials_functions(fn):
elems = do_convert_specials(fn)
assert len(elems) == 1
elem = elems[0]
assert isinstance(elem, e.OperatorAtom) and elem.name == fn
@pytest.mark.parametrize("name, symbol", [tup for tup in plots.data.GREEK_LETTERS.items()])
def test_convert_specials_greek(name, symbol):
elems = do_convert_specials(name)
assert len(elems) == 1
elem = elems[0]
assert isinstance(elem, e.Atom) \
and plots.utils.deitalify_string(elem.name) == symbol
@pytest.mark.parametrize("name", "epsi upsi".split())
def test_convert_specials_epsilon_upsilon(name):
elems = do_convert_specials(name)
assert len(elems) == len(name)
assert elems.to_latex() == name
@pytest.mark.parametrize("name, cls", [
("sum", e.Sum),
("prod", e.Sum),
("sqrt", e.Radical),
("nthroot", e.Radical),
("floor", e.Floor),
("ceil", e.Ceil),
])
def test_convert_specials_misc(name, cls):
elems = do_convert_specials(name)
assert len(elems) == 1
assert isinstance(elems[0], cls)
@pytest.mark.parametrize("base", "sin cos tan sec cosec csc cot".split())
@pytest.mark.parametrize("template", ["a{}", "arc{}", "{}h", "a{}h"])
def test_convert_specials_add_to_trig(base, template):
op = f"\\operatorname{{{base}}}"
elems = do_convert_specials(template.format(op))
assert len(elems) == 1
assert elems[0].name == template.format(base)
def test_greedy_insert(cursor):
elems = from_latex(r"3\sqrt{x}(x(9-x))-4")
cursor.reparent(elems, 2)
cursor.greedy_insert(e.Frac)
assert elems.to_latex() == r"3\frac{\sqrt{x}}{(x(9-x))}-4"
def test_greedy_insert_with_parens(cursor):
elems = from_latex(r"3(x+1)(x(9-x))-4")
cursor.reparent(elems, 6)
cursor.greedy_insert(e.Frac)
assert elems.to_latex() == r"3\frac{(x+1)}{(x(9-x))}-4"
def test_greedy_insert_with_numbers(cursor):
elems = from_latex(r"3.238923829-4")
cursor.reparent(elems, 6)
cursor.greedy_insert(e.Frac)
assert elems.to_latex() == r"\frac{3.2389}{23829}-4"
def test_dissolve(cursor):
elems = from_latex(r"\frac{abc}{def}")
cursor.reparent(elems[0].numerator, 0)
cursor.backspace(plots.utils.Direction.LEFT)
assert elems.to_latex() == "abcdef"
assert cursor.owner is elems
def test_backspace_into(cursor):
elems = from_latex(r"\frac{abc}{def}")
cursor.reparent(elems, -1)
cursor.backspace(plots.utils.Direction.LEFT)
assert elems.to_latex() == r"\frac{abc}{de}"
assert cursor.owner is elems[0].denominator
assert cursor.pos == 2
def test_delete_into(cursor):
elems = from_latex(r"\frac{abc}{def}")
cursor.reparent(elems, 0)
cursor.backspace(plots.utils.Direction.RIGHT)
assert elems.to_latex() == r"\frac{bc}{def}"
assert cursor.owner is elems[0].numerator
assert cursor.pos == 0
def test_frac_accept_selection(cursor):
elems = from_latex(r"xyz")
cursor.select_all(elems)
cursor.greedy_insert(e.Frac)
assert elems.to_latex() == r"\frac{xyz}{}"
assert cursor.owner is elems[0].denominator
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