nixos/tests/switch-test: Ensures the test fails on failure (#55744)

The `| tee` invocation always masked the return value of the
switch-to-configuration test.

```
~ $ false | tee && echo "oh no"
oh no
```

The added wrapper script will still output everything to stderr, while
passing failures to the test harness.
This commit is contained in:
Samuel Dionne-Riel 2019-02-14 16:55:16 -05:00 committed by xeji
parent 4a340dbfa7
commit 98419a0f64

View file

@ -18,8 +18,17 @@ import ./make-test.nix ({ pkgs, ...} : {
testScript = {nodes, ...}: let
originalSystem = nodes.machine.config.system.build.toplevel;
otherSystem = nodes.other.config.system.build.toplevel;
# Ensures failures pass through using pipefail, otherwise failing to
# switch-to-configuration is hidden by the success of `tee`.
stderrRunner = pkgs.writeScript "stderr-runner" ''
#! ${pkgs.stdenv.shell}
set -e
set -o pipefail
exec env -i "$@" | tee /dev/stderr
'';
in ''
$machine->succeed("env -i ${originalSystem}/bin/switch-to-configuration test | tee /dev/stderr");
$machine->succeed("env -i ${otherSystem}/bin/switch-to-configuration test | tee /dev/stderr");
$machine->succeed("${stderrRunner} ${originalSystem}/bin/switch-to-configuration test");
$machine->succeed("${stderrRunner} ${otherSystem}/bin/switch-to-configuration test");
'';
})