{ ... }:

{
  home.file = {
    conflict1 = {
      text = "";
      target = "baz";
    };
    conflict2 = {
      source = ./target-conflict.nix;
      target = "baz";
    };
  };

  test.asserts.assertions.expected = [''
    Conflicting managed target files: baz

    This may happen, for example, if you have a configuration similar to

        home.file = {
          conflict1 = { source = ./foo.nix; target = "baz"; };
          conflict2 = { source = ./bar.nix; target = "baz"; };
        }''];
}