92 lines
2.3 KiB
Nix
92 lines
2.3 KiB
Nix
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{ stdenv, pkgs, runExecline, getBins, writeScript
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# https://www.mail-archive.com/skaware@list.skarnet.org/msg01256.html
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, coreutils }:
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let
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bins = getBins coreutils [ "mv" ]
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// getBins pkgs.execline [
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"execlineb"
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{ use = "if"; as = "execlineIf"; }
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"redirfd"
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"importas"
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]
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// getBins pkgs.s6-portable-utils [
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"s6-chmod"
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"s6-grep"
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"s6-touch"
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"s6-cat"
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"s6-test"
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];
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# execline block of depth 1
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block = args: builtins.map (arg: " ${arg}") args ++ [ "" ];
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# derivation that tests whether a given line exists
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# in the given file. Does not use runExecline, because
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# that should be tested after all.
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fileHasLine = line: file: derivation {
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name = "run-execline-test-file-${file.name}-has-line";
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inherit (stdenv) system;
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builder = bins.execlineIf;
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args =
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(block [
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bins.redirfd "-r" "0" file # read file to stdin
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bins.s6-grep "-F" "-q" line # and grep for the line
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])
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++ [
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# if the block succeeded, touch $out
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bins.importas "-ui" "out" "out"
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bins.s6-touch "$out"
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];
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preferLocalBuild = true;
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allowSubstitutes = false;
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};
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# basic test that touches out
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basic = runExecline "run-execline-test-basic" {
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derivationArgs = {
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preferLocalBuild = true;
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allowSubstitutes = false;
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};
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} [
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"importas" "-ui" "out" "out"
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"${bins.s6-touch}" "$out"
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];
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# whether the stdin argument works as intended
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stdin = fileHasLine "foo" (runExecline "run-execline-test-stdin" {
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stdin = "foo\nbar\nfoo";
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derivationArgs = {
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preferLocalBuild = true;
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allowSubstitutes = false;
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};
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} [
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"importas" "-ui" "out" "out"
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# this pipes stdout of s6-cat to $out
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# and s6-cat redirects from stdin to stdout
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"redirfd" "-w" "1" "$out" bins.s6-cat
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]);
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wrapWithVar = runExecline "run-execline-test-wrap-with-var" {
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builderWrapper = writeScript "var-wrapper" ''
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#!${bins.execlineb} -S0
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export myvar myvalue $@
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'';
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derivationArgs = {
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preferLocalBuild = true;
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allowSubstitutes = false;
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};
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} [
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"importas" "-ui" "v" "myvar"
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"if" [ bins.s6-test "myvalue" "=" "$v" ]
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"importas" "out" "out"
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bins.s6-touch "$out"
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];
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in [
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basic
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stdin
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wrapWithVar
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]
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