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# This is a test for autoPatchelfHook. To test it, we just need a simple binary
# which uses the hook. We took the derivation from tonelib-jam, which sounds
# like a good candidate with a small closure, and trimmed it down.

{ stdenv
, lib
, fetchurl
, autoPatchelfHook
, dpkg
, freetype
, curl
# This test checks that the behavior of autoPatchelfHook is correct whether
# __structuredAttrs
# (https://nixos.org/manual/nix/stable/language/advanced-attributes#adv-attr-structuredAttrs)
# is set or not. Hence __structuredAttrs is provided as a parameter.
, __structuredAttrs
}:

let runtimeDependencies = [
  (lib.getLib curl)
  "/some/dep"
  "/some/other/dep"
]
# A dependency with space only works with __structuredAttrs set to true.
++ lib.lists.optional __structuredAttrs "/some/dep with space";
in

stdenv.mkDerivation {
  name = "auto-patchelf-test";

  src = fetchurl {
    url = "https://tonelib.net/download/221222/ToneLib-Jam-amd64.deb";
    sha256 = "sha256-c6At2lRPngQPpE7O+VY/Hsfw+QfIb3COIuHfbqqIEuM=";
  };

  unpackCmd = ''
    dpkg -x $curSrc source
  '';

  nativeBuildInputs = [
    dpkg
    autoPatchelfHook
  ];

  installPhase = ''
    mv usr $out
  '';

  buildInputs = [
    freetype
  ];

  autoPatchelfIgnoreMissingDeps = [
    "libGL.so.1"
    "libasound.so.2"
  ];

  inherit runtimeDependencies;

  # Additional phase performing the actual test.
  installCheckPhase =
    let allDeps = runtimeDependencies ++ [ (lib.getLib freetype) ];
    in
    ''
      local binary="$out/bin/ToneLib-Jam"
      local interpreter=$(patchelf --print-interpreter $binary)
      local runpath=$(patchelf --print-rpath $binary)
      local glibcStorePath="${stdenv.cc.libc}"

      # Check that the glibc path is a prefix of the interpreter. If
      # autoPatchelfHook ran correctly, the binary should have set the interpreter
      # to point to the store.
      echo "[auto-patchelf-hook-test]: Check that the interpreter is in the store"
      test "''${interpreter#$glibcStorePath}" != "$interpreter"

      readarray -td':' runpathArray < <(echo -n "$runpath")

      echo "[auto-patchelf-hook-test]: Check that the runpath has the right number of entries"
      test "''${#runpathArray[@]}" -eq ${builtins.toString (builtins.length allDeps)}

      echo "[auto-patchelf-hook-test]: Check that the runpath contains the expected runtime deps"
    ''
    + lib.strings.concatStringsSep "\n"
      (lib.lists.imap0
        (i: path:
          let iAsStr = builtins.toString i; in
          ''
            echo "[auto-patchelf-hook-test]: Check that entry ${iAsStr} is ${path}"
            test "''${paths[${iAsStr}]}" = "$path"
          '')
        allDeps
      );

  doInstallCheck = true;
  inherit __structuredAttrs;
}