diff options
Diffstat (limited to 'nixos/lib/testing-python.nix')
| -rw-r--r-- | nixos/lib/testing-python.nix | 250 |
1 files changed, 21 insertions, 229 deletions
diff --git a/nixos/lib/testing-python.nix b/nixos/lib/testing-python.nix index 4bb1689ffd7..c303b0bf17b 100644 --- a/nixos/lib/testing-python.nix +++ b/nixos/lib/testing-python.nix @@ -12,159 +12,22 @@ with pkgs; +let + nixos-lib = import ./default.nix { inherit (pkgs) lib; }; +in + rec { inherit pkgs; - # Run an automated test suite in the given virtual network. - runTests = { driver, driverInteractive, pos }: - stdenv.mkDerivation { - name = "vm-test-run-${driver.testName}"; - - requiredSystemFeatures = [ "kvm" "nixos-test" ]; - - buildCommand = - '' - mkdir -p $out - - # effectively mute the XMLLogger - export LOGFILE=/dev/null - - ${driver}/bin/nixos-test-driver -o $out - ''; + evalTest = module: nixos-lib.evalTest { imports = [ extraTestModule module ]; }; + runTest = module: nixos-lib.runTest { imports = [ extraTestModule module ]; }; - passthru = driver.passthru // { - inherit driver driverInteractive; - }; - - inherit pos; # for better debugging + extraTestModule = { + config = { + hostPkgs = pkgs; }; - - # Generate convenience wrappers for running the test driver - # has vlans, vms and test script defaulted through env variables - # also instantiates test script with nodes, if it's a function (contract) - setupDriverForTest = { - testScript - , testName - , nodes - , qemu_pkg ? pkgs.qemu_test - , enableOCR ? false - , skipLint ? false - , skipTypeCheck ? false - , passthru ? {} - , interactive ? false - , extraPythonPackages ? (_ :[]) - }: - let - # Reifies and correctly wraps the python test driver for - # the respective qemu version and with or without ocr support - testDriver = pkgs.callPackage ./test-driver { - inherit enableOCR extraPythonPackages; - qemu_pkg = qemu_test; - imagemagick_light = imagemagick_light.override { inherit libtiff; }; - tesseract4 = tesseract4.override { enableLanguages = [ "eng" ]; }; - }; - - - testDriverName = - let - # A standard store path to the vm monitor is built like this: - # /tmp/nix-build-vm-test-run-$name.drv-0/vm-state-machine/monitor - # The max filename length of a unix domain socket is 108 bytes. - # This means $name can at most be 50 bytes long. - maxTestNameLen = 50; - testNameLen = builtins.stringLength testName; - in with builtins; - if testNameLen > maxTestNameLen then - abort - ("The name of the test '${testName}' must not be longer than ${toString maxTestNameLen} " + - "it's currently ${toString testNameLen} characters long.") - else - "nixos-test-driver-${testName}"; - - vlans = map (m: m.config.virtualisation.vlans) (lib.attrValues nodes); - vms = map (m: m.config.system.build.vm) (lib.attrValues nodes); - - nodeHostNames = let - nodesList = map (c: c.config.system.name) (lib.attrValues 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_]+)?$" node == null) - nodeHostNames; - - testScript' = - # Call the test script with the computed nodes. - if lib.isFunction testScript - then testScript { inherit nodes; } - else testScript; - - uniqueVlans = lib.unique (builtins.concatLists vlans); - vlanNames = map (i: "vlan${toString i}: VLan;") uniqueVlans; - machineNames = map (name: "${name}: Machine;") nodeHostNames; - in - if lib.length invalidNodeNames > 0 then - throw '' - Cannot create machines out of (${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 skipLint "Linting is disabled" (runCommand testDriverName - { - inherit testName; - nativeBuildInputs = [ makeWrapper mypy ]; - buildInputs = [ testDriver ]; - testScript = testScript'; - preferLocalBuild = true; - passthru = passthru // { - inherit nodes; - }; - meta.mainProgram = "nixos-test-driver"; - } - '' - mkdir -p $out/bin - - vmStartScripts=($(for i in ${toString vms}; do echo $i/bin/run-*-vm; done)) - - ${lib.optionalString (!skipTypeCheck) '' - # prepend type hints so the test script can be type checked with mypy - cat "${./test-script-prepend.py}" >> testScriptWithTypes - echo "${builtins.toString machineNames}" >> testScriptWithTypes - echo "${builtins.toString vlanNames}" >> testScriptWithTypes - echo -n "$testScript" >> testScriptWithTypes - - mypy --no-implicit-optional \ - --pretty \ - --no-color-output \ - testScriptWithTypes - ''} - - echo -n "$testScript" >> $out/test-script - - ln -s ${testDriver}/bin/nixos-test-driver $out/bin/nixos-test-driver - - ${testDriver}/bin/generate-driver-symbols - ${lib.optionalString (!skipLint) '' - PYFLAKES_BUILTINS="$( - echo -n ${lib.escapeShellArg (lib.concatStringsSep "," nodeHostNames)}, - < ${lib.escapeShellArg "driver-symbols"} - )" ${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}' \ - ${lib.optionalString (interactive) "--add-flags --interactive"} - ''); + }; # Make a full-blown test makeTest = @@ -184,91 +47,20 @@ rec { then builtins.unsafeGetAttrPos "description" meta else builtins.unsafeGetAttrPos "testScript" t) , extraPythonPackages ? (_ : []) + , interactive ? {} } @ t: - let - mkNodes = qemu_pkg: - let - testScript' = - # Call the test script with the computed nodes. - if lib.isFunction testScript - then testScript { nodes = mkNodes qemu_pkg; } - else testScript; - - build-vms = import ./build-vms.nix { - inherit system lib pkgs minimal specialArgs; - extraConfigurations = extraConfigurations ++ [( - { config, ... }: - { - virtualisation.qemu.package = qemu_pkg; - - # Make sure all derivations referenced by the test - # script are available on the nodes. When the store is - # accessed through 9p, this isn't important, since - # everything in the store is available to the guest, - # but when building a root image it is, as all paths - # that should be available to the guest has to be - # copied to the image. - virtualisation.additionalPaths = - lib.optional - # A testScript may evaluate nodes, which has caused - # infinite recursions. The demand cycle involves: - # testScript --> - # nodes --> - # toplevel --> - # additionalPaths --> - # hasContext testScript' --> - # testScript (ad infinitum) - # If we don't need to build an image, we can break this - # cycle by short-circuiting when useNixStoreImage is false. - (config.virtualisation.useNixStoreImage && builtins.hasContext testScript') - (pkgs.writeStringReferencesToFile testScript'); - - # Ensure we do not use aliases. Ideally this is only set - # when the test framework is used by Nixpkgs NixOS tests. - nixpkgs.config.allowAliases = false; - } - )]; - }; - in - lib.warnIf (t?machine) "In test `${name}': The `machine' attribute in NixOS tests (pkgs.nixosTest / make-test-python.nix / testing-python.nix / makeTest) is deprecated. Please use the equivalent `nodes.machine'." - build-vms.buildVirtualNetwork ( - nodes // lib.optionalAttrs (machine != null) { inherit machine; } - ); - - driver = setupDriverForTest { - inherit testScript enableOCR skipTypeCheck skipLint passthru extraPythonPackages; - testName = name; - qemu_pkg = pkgs.qemu_test; - nodes = mkNodes pkgs.qemu_test; - }; - driverInteractive = setupDriverForTest { - inherit testScript enableOCR skipTypeCheck skipLint passthru extraPythonPackages; - testName = name; - qemu_pkg = pkgs.qemu; - nodes = mkNodes pkgs.qemu; - interactive = true; + runTest { + imports = [ + { _file = "makeTest parameters"; config = t; } + { + defaults = { + _file = "makeTest: extraConfigurations"; + imports = extraConfigurations; + }; + } + ]; }; - test = lib.addMetaAttrs meta (runTests { inherit driver pos driverInteractive; }); - - in - test // { - inherit test driver driverInteractive; - inherit (driver) nodes; - }; - - abortForFunction = functionName: abort ''The ${functionName} function was - removed because it is not an essential part of the NixOS testing - infrastructure. It had no usage in NixOS or Nixpkgs and it had no designated - maintainer. You are free to reintroduce it by documenting it in the manual - and adding yourself as maintainer. It was removed in - https://github.com/NixOS/nixpkgs/pull/137013 - ''; - - runInMachine = abortForFunction "runInMachine"; - - runInMachineWithX = abortForFunction "runInMachineWithX"; - simpleTest = as: (makeTest as).test; } |