nixpkgs/pkgs/test/make-binary-wrapper/default.nix
Silvan Mosberger 7cb66fd579 tests.makeBinaryWrapper: Prevent rebuilds when Nix files change
The source included way more files than it really needed.
This commit limits it to exactly those it needs.

This also makes sure that no rebuild is necessary when any Nix
file changes, in particular useful when we reformat the Nix files.
2024-08-25 04:59:11 +02:00

71 lines
1.9 KiB
Nix

{ lib
, stdenv
, pkgsCross
, makeBinaryWrapper
, writeText
, runCommand
, runCommandCC
}:
let
env = { nativeBuildInputs = [ makeBinaryWrapper ]; };
envCheck = runCommandCC "envcheck" env ''
cc -Wall -Werror -Wpedantic -o $out ${./envcheck.c}
'';
makeGoldenTest = testname: runCommand "make-binary-wrapper-test-${testname}" env ''
mkdir -p tmp/foo # for the chdir test
source=${lib.fileset.toSource {
root = ./.;
fileset = lib.fileset.unions [
(./. + "/${testname}.cmdline")
(./. + "/${testname}.c")
(lib.fileset.maybeMissing (./. + "/${testname}.env"))
];
}}
params=$(<"$source/${testname}.cmdline")
eval "makeCWrapper /send/me/flags $params" > wrapper.c
diff wrapper.c "$source/${testname}.c"
if [ -f "$source/${testname}.env" ]; then
eval "makeWrapper ${envCheck} wrapped $params"
env -i ./wrapped > env.txt
sed "s#SUBST_ARGV0#${envCheck}#;s#SUBST_CWD#$PWD#" \
"$source/${testname}.env" > golden-env.txt
if ! diff env.txt golden-env.txt; then
echo "env/argv should be:"
cat golden-env.txt
echo "env/argv output is:"
cat env.txt
exit 1
fi
else
# without a golden env, we expect the wrapper compilation to fail
! eval "makeWrapper ${envCheck} wrapped $params" &> error.txt
fi
cp wrapper.c $out
'';
tests = lib.genAttrs [
"add-flags"
"argv0"
"basic"
"chdir"
"combination"
"env"
"inherit-argv0"
"invalid-env"
"overlength-strings"
"prefix"
"suffix"
] makeGoldenTest // lib.optionalAttrs (! stdenv.isDarwin) {
cross = pkgsCross.${if stdenv.buildPlatform.isAarch64 then "gnu64" else "aarch64-multiplatform"}.callPackage ./cross.nix { };
};
in
writeText "make-binary-wrapper-tests" ''
${lib.concatStringsSep "\n" (builtins.attrValues tests)}
'' // tests