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from string import ascii_lowercase
import pytest
from textual.app import App
from textual.binding import (
Binding,
BindingError,
BindingsMap,
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 BindingsMap([BINDING1, BINDING2])
@pytest.fixture
def more_bindings():
yield BindingsMap([BINDING1, BINDING2, BINDING3])
def test_bindings_get_key(bindings):
assert bindings.get_bindings_for_key("b") == [
Binding("b", action="action1", description="description1")
]
assert bindings.get_bindings_for_key("c") == [BINDING2]
with pytest.raises(NoBinding):
bindings.get_bindings_for_key("control+meta+alt+shift+super+hyper+t")
def test_bindings_get_key_spaced_list(more_bindings):
assert (
more_bindings.get_bindings_for_key("d")[0].action
== more_bindings.get_bindings_for_key("e")[0].action
)
def test_bindings_merge_simple(bindings):
left = BindingsMap([BINDING1])
right = BindingsMap([BINDING2])
assert BindingsMap.merge([left, right]).key_to_bindings == bindings.key_to_bindings
def test_bindings_merge_overlap():
left = BindingsMap([BINDING1])
another_binding = Binding(
"a", action="another_action", description="another_description"
)
assert BindingsMap.merge(
[left, BindingsMap([another_binding])]
).key_to_bindings == {
"a": [
Binding("a", action="action1", description="description1"),
another_binding,
],
"b": [Binding("b", action="action1", description="description1")],
}
def test_bad_binding_tuple():
with pytest.raises(BindingError):
_ = BindingsMap((("a",),))
with pytest.raises(BindingError):
_ = BindingsMap((("a", "action", "description", "too much"),))
def test_binding_from_tuples():
assert BindingsMap(
((BINDING2.key, BINDING2.action, BINDING2.description),)
).get_bindings_for_key("c") == [BINDING2]
def test_shown():
bindings = BindingsMap(
[
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")]
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