mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-05 05:13:04 +00:00
76a4adc19c
Add a function to create tests that use hardware from the host system like GPUs.
97 lines
2.6 KiB
Nix
97 lines
2.6 KiB
Nix
/* Create tests that run in the nix sandbox with additional access to selected host paths
|
|
|
|
This is for example useful for testing hardware where a tests needs access to
|
|
/sys and optionally more.
|
|
|
|
The following example shows a test that accesses the GPU:
|
|
|
|
Example:
|
|
makeImpureTest {
|
|
name = "opencl";
|
|
testedPackage = "mypackage"; # Or testPath = "mypackage.impureTests.opencl.testDerivation"
|
|
|
|
sandboxPaths = [ "/sys" "/dev/dri" ]; # Defaults to ["/sys"]
|
|
prepareRunCommands = ""; # (Optional) Setup for the runScript
|
|
nixFlags = []; # (Optional) nix-build options for the runScript
|
|
|
|
testScript = "...";
|
|
}
|
|
|
|
Save as `test.nix` next to a package and reference it from the package:
|
|
passthru.impureTests = { opencl = callPackage ./test.nix {}; };
|
|
|
|
`makeImpureTest` will return here a script that contains the actual nix-build command including all necessary sandbox flags.
|
|
|
|
It can be executed like this:
|
|
$(nix-build -A mypackage.impureTests)
|
|
|
|
Rerun an already cached test:
|
|
$(nix-build -A mypackage.impureTests) --check
|
|
*/
|
|
{ lib
|
|
, stdenv
|
|
, writeShellScript
|
|
|
|
, name
|
|
, testedPackage ? null
|
|
, testPath ? "${testedPackage}.impureTests.${name}.testDerivation"
|
|
, sandboxPaths ? [ "/sys" ]
|
|
, prepareRunCommands ? ""
|
|
, nixFlags ? [ ]
|
|
, testScript
|
|
, ...
|
|
} @ args:
|
|
|
|
let
|
|
sandboxPathsTests = builtins.map (path: "[[ ! -e '${path}' ]]") sandboxPaths;
|
|
sandboxPathsTest = lib.concatStringsSep " || " sandboxPathsTests;
|
|
sandboxPathsList = lib.concatStringsSep " " sandboxPaths;
|
|
|
|
testDerivation = stdenv.mkDerivation (lib.recursiveUpdate
|
|
{
|
|
name = "test-run-${name}";
|
|
|
|
requiredSystemFeatures = [ "nixos-test" ];
|
|
|
|
buildCommand = ''
|
|
mkdir -p $out
|
|
|
|
if ${sandboxPathsTest}; then
|
|
echo 'Run this test as *root* with `--option extra-sandbox-paths '"'${sandboxPathsList}'"'`'
|
|
exit 1
|
|
fi
|
|
|
|
# Run test
|
|
${testScript}
|
|
'';
|
|
|
|
passthru.runScript = runScript;
|
|
}
|
|
(builtins.removeAttrs args [
|
|
"lib"
|
|
"stdenv"
|
|
"writeShellScript"
|
|
|
|
"name"
|
|
"testedPackage"
|
|
"testPath"
|
|
"sandboxPaths"
|
|
"prepareRunCommands"
|
|
"nixFlags"
|
|
"testScript"
|
|
])
|
|
);
|
|
|
|
runScript = writeShellScript "run-script-${name}" ''
|
|
set -euo pipefail
|
|
|
|
${prepareRunCommands}
|
|
|
|
sudo nix-build --option extra-sandbox-paths '${sandboxPathsList}' ${lib.escapeShellArgs nixFlags} -A ${testPath} "$@"
|
|
'';
|
|
in
|
|
# The main output is the run script, inject the derivation for the actual test
|
|
runScript.overrideAttrs (old: {
|
|
passthru = { inherit testDerivation; };
|
|
})
|