tjh.dev
1# to run these tests:
2# nix-instantiate --eval --strict . -A tests.kernel-config
3#
4# make sure to use NON EXISTING kernel settings else they may conflict with
5# common-config.nix
6{ lib, pkgs }:
7
8with lib;
9with kernel;
10
11let
12 lts_kernel = pkgs.linuxPackages.kernel;
13
14 # to see the result once the module transformed the lose structured config
15 getConfig = structuredConfig:
16 (lts_kernel.override {
17 structuredExtraConfig = structuredConfig;
18 }).configfile.structuredConfig;
19
20 mandatoryVsOptionalConfig = mkMerge [
21 { NIXOS_FAKE_USB_DEBUG = yes;}
22 { NIXOS_FAKE_USB_DEBUG = option yes; }
23 ];
24
25 freeformConfig = mkMerge [
26 { NIXOS_FAKE_MMC_BLOCK_MINORS = freeform "32"; } # same as default, won't trigger any error
27 { NIXOS_FAKE_MMC_BLOCK_MINORS = freeform "64"; } # will trigger an error but the message is not great:
28 ];
29
30 yesWinsOverNoConfig = mkMerge [
31 # default for "NIXOS_TEST_BOOLEAN" is no
32 { "NIXOS_TEST_BOOLEAN" = yes; } # yes wins over no by default
33 { "NIXOS_TEST_BOOLEAN" = no; }
34 ];
35
36 optionalNoWins = mkMerge [
37 { NIXOS_FAKE_USB_DEBUG = option yes;}
38 { NIXOS_FAKE_USB_DEBUG = yes;}
39 ];
40
41 allOptionalRemainOptional = mkMerge [
42 { NIXOS_FAKE_USB_DEBUG = option yes;}
43 { NIXOS_FAKE_USB_DEBUG = option yes;}
44 ];
45
46in
47runTests {
48 testEasy = {
49 expr = (getConfig { NIXOS_FAKE_USB_DEBUG = yes;}).NIXOS_FAKE_USB_DEBUG;
50 expected = { tristate = "y"; optional = false; freeform = null; };
51 };
52
53 # mandatory flag should win over optional
54 testMandatoryCheck = {
55 expr = (getConfig mandatoryVsOptionalConfig).NIXOS_FAKE_USB_DEBUG.optional;
56 expected = false;
57 };
58
59 testYesWinsOverNo = {
60 expr = (getConfig yesWinsOverNoConfig)."NIXOS_TEST_BOOLEAN".tristate;
61 expected = "y";
62 };
63
64 testAllOptionalRemainOptional = {
65 expr = (getConfig allOptionalRemainOptional)."NIXOS_FAKE_USB_DEBUG".optional;
66 expected = true;
67 };
68
69 # check that freeform options are unique
70 # Should trigger
71 # > The option `settings.NIXOS_FAKE_MMC_BLOCK_MINORS.freeform' has conflicting definitions, in `<unknown-file>' and `<unknown-file>'
72 testTreeform = let
73 res = builtins.tryEval ( (getConfig freeformConfig).NIXOS_FAKE_MMC_BLOCK_MINORS.freeform);
74 in {
75 expr = res.success;
76 expected = false;
77 };
78
79}