gears/tests/test_signals.py
2025-03-09 02:27:18 +13:00

122 lines
2.5 KiB
Python

from dataclasses import dataclass
from typing import NamedTuple
from unittest.mock import MagicMock
from gears import Gear
from gears.connections import connect
from gears.effect import effect_of, effect_of_2
def test_get_set():
g = Gear(1)
assert g.get() == 1
assert g() == 1
g.set(3)
assert g.get() == 3
assert g() == 3
def test_basic_effect():
g = Gear("E")
last_arg: str | None = None
@effect_of(g)
def value_changed(v: str):
nonlocal last_arg
last_arg = v
assert last_arg == "E"
def test_effect_of_2():
g1 = Gear("E")
g2 = Gear(3)
last_arg: tuple[str, int] | None = None
@effect_of_2(g1, g2)
def value_changed(v1: str, v2: int):
nonlocal last_arg
last_arg = (v1, v2)
assert last_arg == ("E", 3)
g2.set(4)
assert last_arg == ("E", 4)
def test_connect():
my_str = Gear("123")
my_int = connect(my_str, lambda s: int(s), lambda _, i: str(i))
assert my_int() == 123
my_int.set(321)
assert my_str() == "321"
def test_connect_multiplication():
mul1 = Gear(10.0)
mul2 = connect(mul1, lambda x: x * 2.0, lambda _, y: y / 2.0)
mul3 = connect(mul1, lambda x: x * 3.0, lambda _, y: y / 3.0)
assert mul2() == 20
assert mul3() == 30
mul2.set(30)
assert mul1() == 15
assert mul3() == 45
def test_connect_property():
class Foo(NamedTuple):
bar: int
baz: int
foo = Gear(Foo(bar=1, baz=2))
bar = connect(
foo,
lambda foo: foo.bar,
lambda foo, bar: Foo(bar=bar, baz=foo.baz),
# TODO: look into dataclasses.replace
)
assert bar() == 1
bar.set(5)
assert bar() == 5
assert foo() == Foo(5, 2)
# class IntEntryOld:
# on_value_changed: Signal[int]
# _val: int
# def get_val(self, val: int): ...
# def set_val(self, val: int): ...
# class IntEntry:
# def __init__(self, value: Gear[int]): ...
# int_entry = IntEntry()
# effect_of(bar)(int_entry.set_val)
# int_entry.on_value_changed.connect(bar.set)
# @effect_of(bar)
# def update_ui(bar: int):
# int_entry.set_val(bar)
# def update_model(bar_val: int):
# bar.set(bar_val)
# int_entry.on_value_changed.connect(update_model)
def hello(my_callback):
my_callback(5)
def test_demonstrate_magicmock():
m = MagicMock()
# print(f"{m.foo(4).bar[0]=}")
# m.
hello(m)
# assert m.call_count == 1
m.assert_called_once_with(5)