def test_select_all_backspace():
cursor = Cursor()
elems = from_latex("abcd")
cursor.reparent(elems, 2)
cursor.select_all(elems)
cursor.backspace(None)
assert len(elems) == 0
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_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_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_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_calculate_selection_deep(cursor):
elems = from_latex(r"x\abs{3}-3\sqrt{\frac{2}{x}}+4")
cursor.reparent(elems[1].argument, -1)
cursor.secondary_owner = elems[4].radicand[0].denominator
cursor.secondary_pos = 0
_range, ancestor = cursor.calculate_selection()
assert _range == range(1, 5)
assert ancestor is elems
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_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_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
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_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_handle_movement_down_out(cursor):
elems = from_latex(r"\abs{x}")
cursor.reparent(elems[0].argument, -1)
cursor.handle_movement(Direction.DOWN)
assert cursor.owner is elems
assert cursor.pos == 1
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 do_convert_specials(name):
elems = from_latex(name)
cursor = Cursor()
cursor.reparent(elems, -1)
elems.convert_specials(cursor)
return elems
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_move_to_previous_list(cursor):
elems = from_latex(r"\frac{3}{2}")
cursor.reparent(elems[0].denominator, 0)
cursor.handle_movement(Direction.LEFT)
assert cursor.owner is elems[0].numerator
assert cursor.pos == 1
def test_move_to_next_list(cursor):
elems = from_latex(r"\frac{3}{2}")
cursor.reparent(elems[0].numerator, -1)
cursor.handle_movement(Direction.RIGHT)
assert cursor.owner is elems[0].denominator
assert cursor.pos == 0
def test_backspace():
cursor = Cursor()
elems = from_latex("abcd")
cursor.reparent(elems, 2)
cursor.backspace(Direction.LEFT)
assert elems.to_latex() == "acd"
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_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_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_mouse_select_drag_deep(cursor):
elems = from_latex(r"x\abs{3}-3\sqrt{\frac{2}{x}}+4")
cursor.reparent(elems[4].radicand[0].denominator, -1)
cursor.mouse_select(elems[1].argument[0], Direction.LEFT, drag=True)
assert cursor.selection_bounds == range(1, 5)
assert cursor.selection_ancestor == elems
