nix/tests/functional/hermetic.nix
John Ericson 30dcc19d1f Put functional tests in tests/functional
I think it is bad for these reasons when `tests/` contains a mix of
functional and integration tests

 - Concepts is harder to understand, the documentation makes a good
   unit vs functional vs integration distinction, but when the
   integration tests are just two subdirs within `tests/` this is not
   clear.

 - Source filtering in the `flake.nix` is more complex. We need to
   filter out some of the dirs from `tests/`, rather than simply pick
   the dirs we want and take all of them. This is a good sign the
   structure of what we are trying to do is not matching the structure
   of the files.

With this change we have a clean:
```shell-session
$ git show 'HEAD:tests'
tree HEAD:tests

functional/
installer/
nixos/
```

(cherry picked from commit 68c81c7375)
2023-12-01 12:06:43 -05:00

57 lines
1.4 KiB
Nix

{ busybox, seed }:
with import ./config.nix;
let
contentAddressedByDefault = builtins.getEnv "NIX_TESTS_CA_BY_DEFAULT" == "1";
caArgs = if contentAddressedByDefault then {
__contentAddressed = true;
outputHashMode = "recursive";
outputHashAlgo = "sha256";
} else {};
mkDerivation = args:
derivation ({
inherit system;
builder = busybox;
args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" "if [ -e .attrs.sh ]; then source .attrs.sh; fi; eval \"$buildCommand\"")];
} // removeAttrs args ["builder" "meta" "passthru"]
// caArgs)
// { meta = args.meta or {}; passthru = args.passthru or {}; };
input1 = mkDerivation {
shell = busybox;
name = "hermetic-input-1";
buildCommand = "echo hi-input1 seed=${toString seed}; echo FOO > $out";
};
input2 = mkDerivation {
shell = busybox;
name = "hermetic-input-2";
buildCommand = "echo hi; echo BAR > $out";
};
input3 = mkDerivation {
shell = busybox;
name = "hermetic-input-3";
buildCommand = ''
echo hi-input3
read x < ${input2}
echo $x BAZ > $out
'';
};
in
mkDerivation {
shell = busybox;
name = "hermetic";
passthru = { inherit input1 input2 input3; };
buildCommand =
''
read x < ${input1}
read y < ${input3}
echo "$x $y" > $out
'';
}