mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-23 14:11:36 +00:00
3edde6562e
When importing Nixpkgs within Nixpkgs, we should not consider aliases to ensure we don't rely on them internally. There are probably more places that need to be converted.
335 lines
10 KiB
Nix
335 lines
10 KiB
Nix
{ system
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, pkgs ? import ../.. { inherit system config; }
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# Use a minimal kernel?
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, minimal ? false
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# Ignored
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, config ? { }
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# !!! See comment about args in lib/modules.nix
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, specialArgs ? { }
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# Modules to add to each VM
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, extraConfigurations ? [ ]
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}:
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with pkgs;
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rec {
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inherit pkgs;
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mkTestDriver =
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let
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testDriverScript = ./test-driver/test-driver.py;
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in
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qemu_pkg: stdenv.mkDerivation {
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name = "nixos-test-driver";
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nativeBuildInputs = [ makeWrapper ];
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buildInputs = [ (python3.withPackages (p: [ p.ptpython p.colorama ])) ];
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checkInputs = with python3Packages; [ pylint black mypy ];
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dontUnpack = true;
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preferLocalBuild = true;
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buildPhase = ''
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python <<EOF
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from pydoc import importfile
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with open('driver-exports', 'w') as fp:
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fp.write(','.join(dir(importfile('${testDriverScript}'))))
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EOF
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'';
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doCheck = true;
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checkPhase = ''
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mypy --disallow-untyped-defs \
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--no-implicit-optional \
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--ignore-missing-imports ${testDriverScript}
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pylint --errors-only ${testDriverScript}
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black --check --diff ${testDriverScript}
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'';
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installPhase =
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''
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mkdir -p $out/bin
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cp ${testDriverScript} $out/bin/nixos-test-driver
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chmod u+x $out/bin/nixos-test-driver
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# TODO: copy user script part into this file (append)
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wrapProgram $out/bin/nixos-test-driver \
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--prefix PATH : "${lib.makeBinPath [ qemu_pkg vde2 netpbm coreutils ]}" \
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install -m 0644 -vD driver-exports $out/nix-support/driver-exports
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'';
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};
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# Run an automated test suite in the given virtual network.
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runTests = {
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# the script that runs the network
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driver,
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# a source position in the format of builtins.unsafeGetAttrPos
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# for meta.position
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pos,
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}:
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stdenv.mkDerivation {
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name = "vm-test-run-${driver.testName}";
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requiredSystemFeatures = [ "kvm" "nixos-test" ];
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buildCommand =
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''
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mkdir -p $out
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LOGFILE=/dev/null tests='exec(os.environ["testScript"])' ${driver}/bin/nixos-test-driver
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'';
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passthru = driver.passthru // {
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inherit driver;
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};
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inherit pos;
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};
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makeTest =
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{ testScript
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, enableOCR ? false
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, name ? "unnamed"
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# Skip linting (mainly intended for faster dev cycles)
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, skipLint ? false
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, passthru ? {}
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, # For meta.position
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pos ? # position used in error messages and for meta.position
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(if t.meta.description or null != null
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then builtins.unsafeGetAttrPos "description" t.meta
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else builtins.unsafeGetAttrPos "testScript" t)
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, ...
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} @ t:
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let
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# A standard store path to the vm monitor is built like this:
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# /tmp/nix-build-vm-test-run-$name.drv-0/vm-state-machine/monitor
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# The max filename length of a unix domain socket is 108 bytes.
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# This means $name can at most be 50 bytes long.
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maxTestNameLen = 50;
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testNameLen = builtins.stringLength name;
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ocrProg = tesseract4.override { enableLanguages = [ "eng" ]; };
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imagemagick_tiff = imagemagick_light.override { inherit libtiff; };
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# Generate convenience wrappers for running the test driver
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# interactively with the specified network, and for starting the
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# VMs from the command line.
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mkDriver = qemu_pkg:
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let
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build-vms = import ./build-vms.nix {
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inherit system pkgs minimal specialArgs;
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extraConfigurations = extraConfigurations ++ (pkgs.lib.optional (qemu_pkg != null)
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{
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virtualisation.qemu.package = qemu_pkg;
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}
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) ++ [(
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{
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# Ensure we do not use aliases. Ideally this is only set
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# when the test framework is used by Nixpkgs NixOS tests.
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nixpkgs.config.allowAliases = false;
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}
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)];
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};
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# FIXME: get this pkg from the module system
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testDriver = mkTestDriver (if qemu_pkg == null then pkgs.qemu_test else qemu_pkg);
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nodes = build-vms.buildVirtualNetwork (
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t.nodes or (if t ? machine then { machine = t.machine; } else { })
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);
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vlans = map (m: m.config.virtualisation.vlans) (lib.attrValues nodes);
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vms = map (m: m.config.system.build.vm) (lib.attrValues nodes);
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testScript' =
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# Call the test script with the computed nodes.
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if lib.isFunction testScript
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then testScript { inherit nodes; }
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else testScript;
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testDriverName = with builtins;
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if testNameLen > maxTestNameLen then
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abort
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("The name of the test '${name}' must not be longer than ${toString maxTestNameLen} " +
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"it's currently ${toString testNameLen} characters long.")
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else
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"nixos-test-driver-${name}";
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in
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lib.warnIf skipLint "Linting is disabled" (runCommand testDriverName
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{
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nativeBuildInputs = [ makeWrapper ];
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testScript = testScript';
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preferLocalBuild = true;
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testName = name;
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passthru = passthru // {
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inherit nodes;
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};
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}
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''
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mkdir -p $out/bin
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echo -n "$testScript" > $out/test-script
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${lib.optionalString (!skipLint) ''
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PYFLAKES_BUILTINS="$(
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echo -n ${lib.escapeShellArg (lib.concatStringsSep "," nodeHostNames)},
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< ${lib.escapeShellArg "${testDriver}/nix-support/driver-exports"}
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)" ${python3Packages.pyflakes}/bin/pyflakes $out/test-script
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''}
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ln -s ${testDriver}/bin/nixos-test-driver $out/bin/
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vms=($(for i in ${toString vms}; do echo $i/bin/run-*-vm; done))
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wrapProgram $out/bin/nixos-test-driver \
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--add-flags "''${vms[*]}" \
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${lib.optionalString enableOCR
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"--prefix PATH : '${ocrProg}/bin:${imagemagick_tiff}/bin'"} \
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--run "export testScript=\"\$(${coreutils}/bin/cat $out/test-script)\"" \
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--set VLANS '${toString vlans}'
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ln -s ${testDriver}/bin/nixos-test-driver $out/bin/nixos-run-vms
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wrapProgram $out/bin/nixos-run-vms \
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--add-flags "''${vms[*]}" \
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${lib.optionalString enableOCR "--prefix PATH : '${ocrProg}/bin'"} \
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--set tests 'start_all(); join_all();' \
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--set VLANS '${toString vlans}' \
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${lib.optionalString (builtins.length vms == 1) "--set USE_SERIAL 1"}
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''); # "
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passMeta = drv: drv // lib.optionalAttrs (t ? meta) {
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meta = (drv.meta or { }) // t.meta;
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};
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driver = mkDriver null;
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driverInteractive = mkDriver pkgs.qemu;
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test = passMeta (runTests { inherit driver pos; });
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nodeNames = builtins.attrNames driver.nodes;
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invalidNodeNames = lib.filter
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(node: builtins.match "^[A-z_]([A-z0-9_]+)?$" node == null)
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nodeNames;
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nodeHostNames = map (c: c.config.system.name) (lib.attrValues driver.nodes);
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in
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if lib.length invalidNodeNames > 0 then
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throw ''
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Cannot create machines out of (${lib.concatStringsSep ", " invalidNodeNames})!
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All machines are referenced as python variables in the testing framework which will break the
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script when special characters are used.
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Please stick to alphanumeric chars and underscores as separation.
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''
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else
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test // {
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inherit test driver driverInteractive;
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inherit (driver) nodes;
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};
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runInMachine =
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{ drv
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, machine
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, preBuild ? ""
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, postBuild ? ""
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, qemu ? pkgs.qemu_test
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, ... # ???
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}:
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let
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build-vms = import ./build-vms.nix {
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inherit system pkgs minimal specialArgs extraConfigurations;
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};
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vm = build-vms.buildVM { }
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[
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machine
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{
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key = "run-in-machine";
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networking.hostName = "client";
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nix.readOnlyStore = false;
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virtualisation.writableStore = false;
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}
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];
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buildrunner = writeText "vm-build" ''
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source $1
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${coreutils}/bin/mkdir -p $TMPDIR
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cd $TMPDIR
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exec $origBuilder $origArgs
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'';
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testScript = ''
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start_all()
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client.wait_for_unit("multi-user.target")
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${preBuild}
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client.succeed("env -i ${bash}/bin/bash ${buildrunner} /tmp/xchg/saved-env >&2")
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${postBuild}
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client.succeed("sync") # flush all data before pulling the plug
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'';
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vmRunCommand = writeText "vm-run" ''
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xchg=vm-state-client/xchg
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${coreutils}/bin/mkdir $out
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${coreutils}/bin/mkdir -p $xchg
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for i in $passAsFile; do
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i2=''${i}Path
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_basename=$(${coreutils}/bin/basename ''${!i2})
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${coreutils}/bin/cp ''${!i2} $xchg/$_basename
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eval $i2=/tmp/xchg/$_basename
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${coreutils}/bin/ls -la $xchg
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done
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unset i i2 _basename
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export | ${gnugrep}/bin/grep -v '^xchg=' > $xchg/saved-env
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unset xchg
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export tests='${testScript}'
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${mkTestDriver qemu}/bin/nixos-test-driver --keep-vm-state ${vm.config.system.build.vm}/bin/run-*-vm
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''; # */
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in
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lib.overrideDerivation drv (attrs: {
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requiredSystemFeatures = [ "kvm" ];
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builder = "${bash}/bin/sh";
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args = [ "-e" vmRunCommand ];
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origArgs = attrs.args;
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origBuilder = attrs.builder;
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});
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runInMachineWithX = { require ? [ ], ... } @ args:
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let
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client =
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{ ... }:
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{
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inherit require;
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imports = [
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../tests/common/auto.nix
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];
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virtualisation.memorySize = 1024;
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services.xserver.enable = true;
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test-support.displayManager.auto.enable = true;
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services.xserver.displayManager.defaultSession = "none+icewm";
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services.xserver.windowManager.icewm.enable = true;
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};
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in
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runInMachine ({
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machine = client;
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preBuild =
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''
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client.wait_for_x()
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'';
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} // args);
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simpleTest = as: (makeTest as).test;
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}
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