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{ config, lib, hostPkgs, ... }:
let
inherit (lib) mkOption types literalMD mdDoc;
# Reifies and correctly wraps the python test driver for
# the respective qemu version and with or without ocr support
testDriver = hostPkgs.callPackage ../test-driver {
inherit (config) enableOCR extraPythonPackages;
qemu_pkg = config.qemu.package;
imagemagick_light = hostPkgs.imagemagick_light.override { inherit (hostPkgs) libtiff; };
tesseract4 = hostPkgs.tesseract4.override { enableLanguages = [ "eng" ]; };
};
vlans = map (m: m.virtualisation.vlans) (lib.attrValues config.nodes);
vms = map (m: m.system.build.vm) (lib.attrValues config.nodes);
nodeHostNames =
let
nodesList = map (c: c.system.name) (lib.attrValues config.nodes);
in
nodesList ++ lib.optional (lib.length nodesList == 1 && !lib.elem "machine" nodesList) "machine";
# TODO: This is an implementation error and needs fixing
# the testing famework cannot legitimately restrict hostnames further
# beyond RFC1035
invalidNodeNames = lib.filter
(node: builtins.match "^[A-z_]([A-z0-9_]+)?$" node == null)
nodeHostNames;
uniqueVlans = lib.unique (builtins.concatLists vlans);
vlanNames = map (i: "vlan${toString i}: VLan;") uniqueVlans;
machineNames = map (name: "${name}: Machine;") nodeHostNames;
withChecks =
if lib.length invalidNodeNames > 0 then
throw ''
Cannot create machines out of (${lib.concatStringsSep ", " invalidNodeNames})!
All machines are referenced as python variables in the testing framework which will break the
script when special characters are used.
This is an IMPLEMENTATION ERROR and needs to be fixed. Meanwhile,
please stick to alphanumeric chars and underscores as separation.
''
else
lib.warnIf config.skipLint "Linting is disabled";
driver =
hostPkgs.runCommand "nixos-test-driver-${config.name}"
{
# inherit testName; TODO (roberth): need this?
nativeBuildInputs = [
hostPkgs.makeWrapper
] ++ lib.optionals (!config.skipTypeCheck) [ hostPkgs.mypy ];
buildInputs = [ testDriver ];
testScript = config.testScriptString;
preferLocalBuild = true;
passthru = config.passthru;
meta = config.meta // {
mainProgram = "nixos-test-driver";
};
}
''
mkdir -p $out/bin
vmStartScripts=($(for i in ${toString vms}; do echo $i/bin/run-*-vm; done))
${lib.optionalString (!config.skipTypeCheck) ''
# prepend type hints so the test script can be type checked with mypy
cat "${../test-script-prepend.py}" >> testScriptWithTypes
echo "${builtins.toString machineNames}" >> testScriptWithTypes
echo "${builtins.toString vlanNames}" >> testScriptWithTypes
echo -n "$testScript" >> testScriptWithTypes
cat -n testScriptWithTypes
mypy --no-implicit-optional \
--pretty \
--no-color-output \
testScriptWithTypes
''}
echo -n "$testScript" >> $out/test-script
ln -s ${testDriver}/bin/nixos-test-driver $out/bin/nixos-test-driver
${testDriver}/bin/generate-driver-symbols
${lib.optionalString (!config.skipLint) ''
PYFLAKES_BUILTINS="$(
echo -n ${lib.escapeShellArg (lib.concatStringsSep "," nodeHostNames)},
< ${lib.escapeShellArg "driver-symbols"}
)" ${hostPkgs.python3Packages.pyflakes}/bin/pyflakes $out/test-script
''}
# set defaults through environment
# see: ./test-driver/test-driver.py argparse implementation
wrapProgram $out/bin/nixos-test-driver \
--set startScripts "''${vmStartScripts[*]}" \
--set testScript "$out/test-script" \
--set vlans '${toString vlans}' \
${lib.escapeShellArgs (lib.concatMap (arg: ["--add-flags" arg]) config.extraDriverArgs)}
'';
in
{
options = {
driver = mkOption {
description = mdDoc "Package containing a script that runs the test.";
type = types.package;
defaultText = literalMD "set by the test framework";
};
hostPkgs = mkOption {
description = mdDoc "Nixpkgs attrset used outside the nodes.";
type = types.raw;
example = lib.literalExpression ''
import nixpkgs { inherit system config overlays; }
'';
};
qemu.package = mkOption {
description = mdDoc "Which qemu package to use for the virtualisation of [{option}`nodes`](#test-opt-nodes).";
type = types.package;
default = hostPkgs.qemu_test;
defaultText = "hostPkgs.qemu_test";
};
enableOCR = mkOption {
description = mdDoc ''
Whether to enable Optical Character Recognition functionality for
testing graphical programs. See [Machine objects](`ssec-machine-objects`).
'';
type = types.bool;
default = false;
};
extraPythonPackages = mkOption {
description = mdDoc ''
Python packages to add to the test driver.
The argument is a Python package set, similar to `pkgs.pythonPackages`.
'';
example = lib.literalExpression ''
p: [ p.numpy ]
'';
type = types.functionTo (types.listOf types.package);
default = ps: [ ];
};
extraDriverArgs = mkOption {
description = mdDoc ''
Extra arguments to pass to the test driver.
They become part of [{option}`driver`](#test-opt-driver) via `wrapProgram`.
'';
type = types.listOf types.str;
default = [];
};
skipLint = mkOption {
type = types.bool;
default = false;
description = mdDoc ''
Do not run the linters. This may speed up your iteration cycle, but it is not something you should commit.
'';
};
skipTypeCheck = mkOption {
type = types.bool;
default = false;
description = mdDoc ''
Disable type checking. This must not be enabled for new NixOS tests.
This may speed up your iteration cycle, unless you're working on the [{option}`testScript`](#test-opt-testScript).
'';
};
};
config = {
_module.args.hostPkgs = config.hostPkgs;
driver = withChecks driver;
# make available on the test runner
passthru.driver = config.driver;
};
}
|
