tests.srcOnly: Add test cases (#386225)

{

  lib,

  runCommand,

  srcOnly,

  hello,

  emptyDirectory,

  glibc,

  zlib,

  stdenv,

  testers,

}:

let

  emptySrc = srcOnly emptyDirectory;

  glibcSrc = srcOnly glibc;

  zlibSrc = srcOnly zlib;

  # It can be invoked in a number of ways. Let's make sure they're equivalent.

  zlibSrcDrvAttrs = srcOnly zlib.drvAttrs;

  # zlibSrcFreeform = # ???;

  helloSrc = srcOnly hello;

  helloSrcDrvAttrs = srcOnly hello.drvAttrs;

  # The srcOnly <drv> invocation leaks a lot of attrs into the srcOnly derivation,

  # so for comparing with the freeform invocation, we need to make a selection.

  # Otherwise, we'll be comparing against whatever attribute the fancy hello drv

  # has.

  helloDrvSimple = stdenv.mkDerivation {

    inherit (hello)

      name

      pname

      version

      src

      patches

      ;

  };

  helloDrvSimpleSrc = srcOnly helloDrvSimple;

  helloDrvSimpleSrcFreeform = srcOnly (

    {

      inherit (helloDrvSimple)

        name

        pname

        version

        src

        patches

        stdenv

        ;

    }

    # __impureHostDeps get duplicated in helloDrvSimpleSrc (on darwin)

    # This is harmless, but fails the test for what is arguably an

    # unrelated non-problem, so we just work around it here.

    # The inclusion of __impureHostDeps really shouldn't be required,

    # and should be removed from this test.

    // lib.optionalAttrs (helloDrvSimple ? __impureHostDeps) {

      inherit (helloDrvSimple) __impureHostDeps;

    }

  );

in

runCommand "srcOnly-tests" { } ''

runCommand "srcOnly-tests"

  {

    moreTests = [

      (testers.testEqualDerivation "zlibSrcDrvAttrs == zlibSrc" zlibSrcDrvAttrs zlibSrc)

      # (testers.testEqualDerivation

      #   "zlibSrcFreeform == zlibSrc"

      #   zlibSrcFreeform

      #   zlibSrc)

      (testers.testEqualDerivation "helloSrcDrvAttrs == helloSrc" helloSrcDrvAttrs helloSrc)

      (testers.testEqualDerivation "helloDrvSimpleSrcFreeform == helloDrvSimpleSrc"

        helloDrvSimpleSrcFreeform

        helloDrvSimpleSrc

      )

    ];

  }

  ''

    # Test that emptySrc is empty

    if [ -n "$(ls -A ${emptySrc})" ]; then

      echo "emptySrc is not empty"

      exit 1

    fi

  # Test that glibcSrc is not empty

  if [ -z "$(ls -A ${glibcSrc})" ]; then

    echo "glibcSrc is empty"

    # Test that zlibSrc is not empty

    if [ -z "$(ls -A ${zlibSrc})" ]; then

      echo "zlibSrc is empty"

      exit 1

    fi