45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
import re
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from pathlib import Path
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from functional2.testlib.fixtures.file_helper import with_files
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from functional2.testlib.fixtures.nix import Nix
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from functional2.testlib.utils import get_global_asset_pack
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@with_files(get_global_asset_pack("dependencies"))
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def test_compression_levels(nix: Nix):
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cache_dir1 = nix.env.dirs.cache_dir / "test1"
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cache_dir2 = nix.env.dirs.cache_dir / "test2"
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nix.settings.feature("nix-command")
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res = nix.nix_build(["dependencies.nix", "--no-out-link"]).run().ok()
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out_path = res.stdout_plain
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def get_size_for_level(level: int, c_dir: Path) -> int:
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cpy_res = (
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nix.nix(
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[
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"copy",
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"--to",
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f"file://{c_dir}?compression=xz&compression-level={level}",
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out_path,
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],
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build=True,
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)
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.run()
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.ok()
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)
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assert "copying 4 paths..." in cpy_res.stderr_plain
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size = 0
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for f in c_dir.glob("*.narinfo"):
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size += int(re.search(r"FileSize: (\d+)\n", f.read_text()).group(1))
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return size
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size_0 = get_size_for_level(0, cache_dir1)
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size_5 = get_size_for_level(5, cache_dir2)
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assert size_0 > size_5
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