pyrox.dev
makeImpureTest: init function for hardware tests
Add a function to create tests that use hardware from the host system
like GPUs.
+96
pkgs/build-support/make-impure-test.nix
+96
pkgs/build-support/make-impure-test.nix
···
1
+
/* Create tests that run in the nix sandbox with additional access to selected host paths
2
+
3
+
This is for example useful for testing hardware where a tests needs access to
4
+
/sys and optionally more.
5
+
6
+
The following example shows a test that accesses the GPU:
7
+
8
+
Example:
9
+
makeImpureTest {
10
+
name = "opencl";
11
+
testedPackage = "mypackage"; # Or testPath = "mypackage.impureTests.opencl.testDerivation"
12
+
13
+
sandboxPaths = [ "/sys" "/dev/dri" ]; # Defaults to ["/sys"]
14
+
prepareRunCommands = ""; # (Optional) Setup for the runScript
15
+
nixFlags = []; # (Optional) nix-build options for the runScript
16
+
17
+
testScript = "...";
18
+
}
19
+
20
+
Save as `test.nix` next to a package and reference it from the package:
21
+
passthru.impureTests = { opencl = callPackage ./test.nix {}; };
22
+
23
+
`makeImpureTest` will return here a script that contains the actual nix-build command including all necessary sandbox flags.
24
+
25
+
It can be executed like this:
26
+
$(nix-build -A mypackage.impureTests)
27
+
28
+
Rerun an already cached test:
29
+
$(nix-build -A mypackage.impureTests) --check
30
+
*/
31
+
{ lib
32
+
, stdenv
33
+
, writeShellScript
34
+
35
+
, name
36
+
, testedPackage ? null
37
+
, testPath ? "${testedPackage}.impureTests.${name}.testDerivation"
38
+
, sandboxPaths ? [ "/sys" ]
39
+
, prepareRunCommands ? ""
40
+
, nixFlags ? [ ]
41
+
, testScript
42
+
, ...
43
+
} @ args:
44
+
45
+
let
46
+
sandboxPathsTests = builtins.map (path: "[[ ! -e '${path}' ]]") sandboxPaths;
47
+
sandboxPathsTest = lib.concatStringsSep " || " sandboxPathsTests;
48
+
sandboxPathsList = lib.concatStringsSep " " sandboxPaths;
49
+
50
+
testDerivation = stdenv.mkDerivation (lib.recursiveUpdate
51
+
{
52
+
name = "test-run-${name}";
53
+
54
+
requiredSystemFeatures = [ "nixos-test" ];
55
+
56
+
buildCommand = ''
57
+
mkdir -p $out
58
+
59
+
if ${sandboxPathsTest}; then
60
+
echo 'Run this test as *root* with `--option extra-sandbox-paths '"'${sandboxPathsList}'"'`'
61
+
exit 1
62
+
fi
63
+
64
+
# Run test
65
+
${testScript}
66
+
'';
67
+
68
+
passthru.runScript = runScript;
69
+
}
70
+
(builtins.removeAttrs args [
71
+
"lib"
72
+
"stdenv"
73
+
"writeShellScript"
74
+
75
+
"name"
76
+
"testedPackage"
77
+
"testPath"
78
+
"sandboxPaths"
79
+
"prepareRunCommands"
80
+
"nixFlags"
81
+
"testScript"
82
+
])
83
+
);
84
+
85
+
runScript = writeShellScript "run-script-${name}" ''
86
+
set -euo pipefail
87
+
88
+
${prepareRunCommands}
89
+
90
+
sudo nix-build --option extra-sandbox-paths '${sandboxPathsList}' ${lib.escapeShellArgs nixFlags} -A ${testPath} "$@"
91
+
'';
92
+
in
93
+
# The main output is the run script, inject the derivation for the actual test
94
+
runScript.overrideAttrs (old: {
95
+
passthru = { inherit testDerivation; };
96
+
})
+2
pkgs/top-level/all-packages.nix
+2
pkgs/top-level/all-packages.nix
···
945
945
946
946
makeAutostartItem = callPackage ../build-support/make-startupitem { };
947
947
948
+
makeImpureTest = callPackage ../build-support/make-impure-test.nix;
949
+
948
950
makeInitrd = callPackage ../build-support/kernel/make-initrd.nix; # Args intentionally left out
949
951
950
952
makeInitrdNG = callPackage ../build-support/kernel/make-initrd-ng.nix;