nix-bitcoin/test/lib/make-test-vm.nix
Erik Arvstedt 7e3d2965a5
testing framework: re-add features removed in nixpkgs 20.09
Since nixpks 20.09, the test output is just an empty directory.
Restore saving the log output and linking to the driver.

Without linking to the driver, the driver is eligible for
garbage collection after running a test via `run-tests.sh --out-link-prefix`,
which implies lengthy driver rebuilds.
2020-11-11 22:27:46 +01:00

38 lines
1.3 KiB
Nix

testArgs:
let
pkgs = import <nixpkgs> { config = {}; overlays = []; };
test = (import "${pkgs.path}/nixos/tests/make-test-python.nix") testArgs;
fixedTest = { system ? builtins.currentSystem, ... }@args:
let
pkgsFixed = pkgs // {
# Fix the black Python code formatter that's used in the test to allow the test
# script to have longer lines. The default width of 88 chars is too restrictive for
# our script.
python3Packages = pkgs.python3Packages // {
black = pkgs.writeScriptBin "black" ''
fileToCheck=''${@:$#}
[[ $fileToCheck = *test-script ]] && extraArgs='--line-length 100'
exec ${pkgs.python3Packages.black}/bin/black $extraArgs "$@"
'';
};
};
test' = test (args // { pkgs = pkgsFixed; });
in
# See nixpkgs/nixos/lib/testing-python.nix for the original definition
test'.overrideAttrs (_: {
# 1. Save test output
# 2. Add link to driver so that a gcroot to a test prevents the driver from
# being garbage-collected
buildCommand = ''
mkdir $out
LOGFILE=$out/output.xml tests='exec(os.environ["testScript"])' ${test'.driver}/bin/nixos-test-driver
ln -s ${test'.driver} $out/driver
'';
}) // { inherit (test') nodes driver; } ;
in
fixedTest