textual/tests/test_binding.py

91 lines
2.5 KiB
Python

from string import ascii_lowercase
import pytest
from textual.app import App
from textual.binding import Binding, BindingError, Bindings, InvalidBinding, NoBinding
BINDING1 = Binding("a,b", action="action1", description="description1")
BINDING2 = Binding("c", action="action2", description="description2")
BINDING3 = Binding(" d , e ", action="action3", description="description3")
@pytest.fixture
def bindings():
yield Bindings([BINDING1, BINDING2])
@pytest.fixture
def more_bindings():
yield Bindings([BINDING1, BINDING2, BINDING3])
def test_bindings_get_key(bindings):
assert bindings.get_key("b") == Binding(
"b", action="action1", description="description1"
)
assert bindings.get_key("c") == BINDING2
with pytest.raises(NoBinding):
bindings.get_key("control+meta+alt+shift+super+hyper+t")
def test_bindings_get_key_spaced_list(more_bindings):
assert more_bindings.get_key("d").action == more_bindings.get_key("e").action
def test_bindings_merge_simple(bindings):
left = Bindings([BINDING1])
right = Bindings([BINDING2])
assert Bindings.merge([left, right]).keys == bindings.keys
def test_bindings_merge_overlap():
left = Bindings([BINDING1])
another_binding = Binding(
"a", action="another_action", description="another_description"
)
assert Bindings.merge([left, Bindings([another_binding])]).keys == {
"a": another_binding,
"b": Binding("b", action="action1", description="description1"),
}
def test_bad_binding_tuple():
with pytest.raises(BindingError):
_ = Bindings((("a", "action"),))
with pytest.raises(BindingError):
_ = Bindings((("a", "action", "description", "too much"),))
def test_binding_from_tuples():
assert (
Bindings(((BINDING2.key, BINDING2.action, BINDING2.description),)).get_key("c")
== BINDING2
)
def test_shown():
bindings = Bindings(
[
Binding(
key,
action=f"action_{key}",
description=f"Emits {key}",
show=bool(ord(key) % 2),
)
for key in ascii_lowercase
]
)
assert len(bindings.shown_keys) == (len(ascii_lowercase) / 2)
def test_invalid_binding():
with pytest.raises(InvalidBinding):
class BrokenApp(App):
BINDINGS = [(",,,", "foo", "Broken")]
with pytest.raises(InvalidBinding):
class BrokenApp(App):
BINDINGS = [(", ,", "foo", "Broken")]