nixpkgs/nixos/tests/keyd.nix

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# The test template is taken from the `./keymap.nix`
{ system ? builtins.currentSystem
, config ? { }
, pkgs ? import ../.. { inherit system config; }
}:
with import ../lib/testing-python.nix { inherit system pkgs; };
let
readyFile = "/tmp/readerReady";
resultFile = "/tmp/readerResult";
testReader = pkgs.writeScript "test-input-reader" ''
rm -f ${resultFile} ${resultFile}.tmp
logger "testReader: START: Waiting for $1 characters, expecting '$2'."
touch ${readyFile}
read -r -N $1 chars
rm -f ${readyFile}
if [ "$chars" == "$2" ]; then
logger -s "testReader: PASS: Got '$2' as expected." 2>${resultFile}.tmp
else
logger -s "testReader: FAIL: Expected '$2' but got '$chars'." 2>${resultFile}.tmp
fi
# rename after the file is written to prevent a race condition
mv ${resultFile}.tmp ${resultFile}
'';
mkKeyboardTest = name: { settings, test }: with pkgs.lib; makeTest {
inherit name;
nodes.machine = {
services.keyd = {
enable = true;
keyboards.default = { inherit settings; };
};
};
testScript = ''
import shlex
machine.wait_for_unit("keyd.service")
def run_test_case(cmd, test_case_name, inputs, expected):
with subtest(test_case_name):
assert len(inputs) == len(expected)
machine.execute("rm -f ${readyFile} ${resultFile}")
# set up process that expects all the keys to be entered
machine.succeed(
"{} {} {} {} >&2 &".format(
cmd,
"${testReader}",
len(inputs),
shlex.quote("".join(expected)),
)
)
# wait for reader to be ready
machine.wait_for_file("${readyFile}")
# send all keys
for key in inputs:
machine.send_key(key)
# wait for result and check
machine.wait_for_file("${resultFile}")
machine.succeed("grep -q 'PASS:' ${resultFile}")
test = ${builtins.toJSON test}
run_test_case("openvt -sw --", "${name}", test["press"], test["expect"])
'';
};
in
pkgs.lib.mapAttrs mkKeyboardTest {
swap-ab_and_ctrl-as-shift = {
test.press = [ "a" "ctrl-b" "c" ];
test.expect = [ "b" "A" "c" ];
settings.main = {
"a" = "b";
"b" = "a";
"control" = "oneshot(shift)";
};
};
}