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nixos/tests/predictable-interface-names: Refactor

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The Nix expression here is really hard to read with multiple (and
unnecessarily) nested lets and it also generates attribute names based
on the derivation generated by makeTest, which will result in these
attribute names:

  * vm-test-run-predictableInterfaceNames
  * vm-test-run-predictableInterfaceNames-with-networkd
  * vm-test-run-unpredictableInterfaceNames
  * vm-test-run-unpredictableInterfaceNames-with-networkd

With the refactor the attribute names are now:

  * predictable
  * predictableNetworkd
  * unpredictable
  * unpredictableNetworkd

So now the code is even shorter and IMHO slightly more readable.

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @symphorien, @fpletz, @adisbladis
This commit is contained in:
aszlig 2018-04-29 15:28:33 +02:00
parent 0e1147d137
commit 97adb03a9e
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GPG Key ID: 684089CE67EBB691
1 changed files with 22 additions and 25 deletions
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27
nixos/tests/predictable-interface-names.nix
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@ -1,15 +1,16 @@
{ system ? builtins.currentSystem { system ? builtins.currentSystem }:
, pkgs ? import ../.. { inherit system; }
}: let
with import ../lib/testing.nix { inherit system; }; inherit (import ../lib/testing.nix { inherit system; }) makeTest pkgs;
let boolToString = x: if x then "yes" else "no"; in in pkgs.lib.listToAttrs (pkgs.lib.crossLists (predictable: withNetworkd: {
let testWhenSetTo = predictable: withNetworkd: name = pkgs.lib.optionalString (!predictable) "un" + "predictable"
makeTest { + pkgs.lib.optionalString withNetworkd "Networkd";
value = makeTest {
name = "${if predictable then "" else "un"}predictableInterfaceNames${if withNetworkd then "-with-networkd" else ""}"; name = "${if predictable then "" else "un"}predictableInterfaceNames${if withNetworkd then "-with-networkd" else ""}";
meta = {}; meta = {};
machine = { config, pkgs, ... }: { machine = { config, lib, ... }: {
networking.usePredictableInterfaceNames = pkgs.stdenv.lib.mkForce predictable; networking.usePredictableInterfaceNames = lib.mkForce predictable;
networking.useNetworkd = withNetworkd; networking.useNetworkd = withNetworkd;
networking.dhcpcd.enable = !withNetworkd; networking.dhcpcd.enable = !withNetworkd;
}; };
@ -19,9 +20,5 @@ makeTest {
$machine->succeed("ip link show ${if predictable then "ens3" else "eth0"}"); $machine->succeed("ip link show ${if predictable then "ens3" else "eth0"}");
$machine->fail("ip link show ${if predictable then "eth0" else "ens3"}"); $machine->fail("ip link show ${if predictable then "eth0" else "ens3"}");
''; '';
}; in };
with pkgs.stdenv.lib.lists; }) [[true false] [true false]])
with pkgs.stdenv.lib.attrsets;
listToAttrs (map (drv: nameValuePair drv.name drv) (
crossLists testWhenSetTo [[true false] [true false]]
))