Files
lix/tests/functional2/build/test_fixed.py
T
eldritch horrors b34f136f10 f2: don't use diverted stores unless specifically requested
diverted stores are only necessary when the logical store paths of
objects matter for the test itself, such as for derivation hashes,
substitution from golden sample nars, or actual tests of the store
diversion functionality. all other tests can use undiverted stores
to run, especially since only linux can build in diverted a store.

Change-Id: I62f0907bdef9961609af22b610195fcec54c1e57
2026-02-11 20:46:18 +00:00

145 lines
5.0 KiB
Python

import re
from pathlib import Path
import pytest
from testlib.fixtures.env import ManagedEnv
from testlib.fixtures.file_helper import with_files
from testlib.fixtures.nix import Nix
from testlib.utils import get_global_asset_pack
@pytest.fixture(autouse=True)
def impure_vars(env: ManagedEnv):
"""
Sets the IMPURE_VARs required by fixed.builder.sh
because I have no clue what Eelco was thinking when writing this stuff
"""
env["IMPURE_VAR1"] = "foo"
env["IMPURE_VAR2"] = "bar"
@with_files(get_global_asset_pack("fixed"))
def test_bad(nix: Nix):
res = nix.nix_instantiate(["fixed.nix", "-A", "good.0"], build=True).run().ok()
store_path = nix.nix_store(["-q", res.stdout_plain], build=True).run().ok().stdout_plain
path = Path(store_path)
assert not path.exists()
# Building with the bad hash should produce the "good" output path as
# a sideeffect.
res = nix.nix_build(["fixed.nix", "-A", "bad", "--no-out-link"]).run().expect(102)
assert "hash mismatch in fixed-output derivation" in res.stderr_plain
assert path.exists()
nix.settings.add_xp_feature("nix-command")
res = nix.nix(["path-info", "--json", store_path], build=True).run().ok()
assert res.json()[0]["ca"] == "fixed:md5:2qk15sxzzjlnpjk9brn7j8ppcd"
@with_files(get_global_asset_pack("fixed"))
def test_good(nix: Nix):
nix.nix_build(["fixed.nix", "-A", "good", "--no-out-link"]).run().ok()
@with_files(get_global_asset_pack("fixed"))
def test_check(nix: Nix):
res = nix.nix_build(["fixed.nix", "-A", "check", "--check"]).run().expect(1)
assert "has no valid outputs registered in the store" in res.stderr_plain
@with_files(get_global_asset_pack("fixed"))
def test_good2(nix: Nix):
# we need to build good.0 *first*, otherwise the hash good2 wants to be materialized
# to does not exist. if it does not exist good2 would be built and *fail* since we'd
# build a non-flat-hashable output. this is mondo jacked, but what can we do. -sigh-
nix.nix_build(["fixed.nix", "-A", "good.0", "--no-out-link"]).run().ok()
nix.nix_build(["fixed.nix", "-A", "good2", "--no-out-link"]).run().ok()
@with_files(get_global_asset_pack("fixed"))
def test_really_bad(nix: Nix):
res = nix.nix_instantiate(["fixed.nix", "-A", "reallyBad"]).run().expect(1)
assert (
"error: hash 'ddd8be4b179a529afa5f2ffae4b9858' has wrong length for hash type 'md5'"
in res.stderr_plain
)
@with_files(get_global_asset_pack("fixed"))
def test_other_store_references(nix: Nix):
res = nix.nix_build(["fixed.nix", "-A", "badReferences"]).run().expect(1)
assert "not allowed to refer to other store paths" in res.stderr_plain
@with_files(get_global_asset_pack("fixed"))
def test_illegal_references(nix: Nix):
"""
Fixed FOD hashes cannot be asserted because:
- the store directory varies between the "Lix build sandbox environment" and a user test run
- *-darwin has a different store location on the top of this in the sandbox (/private/tmp/...) causing further changes.
Regex matching is the best we can afford.
"""
res = nix.nix_build(["fixed.nix", "-A", "illegalReferences"]).run().expect(102)
assert re.findall(
r"the fixed-output derivation '.*?/nix/store/[a-z0-9]*-illegal-reference.drv' must not reference store paths but 1 such references were found:.*/nix/store/[a-z0-9]*-fixed",
res.stderr_plain,
re.DOTALL,
)
@with_files(get_global_asset_pack("fixed"))
def test_attribute_selection(nix: Nix):
nix.nix_instantiate(["fixed.nix", "-A", "good.1"]).run().ok()
@with_files(get_global_asset_pack("fixed"))
def test_parallel_same(nix: Nix):
"""
Test parallel builds of derivations that produce the same output.
Only one should run at the same time.
"""
nix.nix_build(["fixed.nix", "-A", "parallelSame", "--no-out-link", "-j2"]).run().ok()
@pytest.mark.skip("TODO(rootile, 2025-10): Doesn't work for some reason, f1 test is kept for now")
@with_files(get_global_asset_pack("fixed"))
def test_same_as_add(nix: Nix, files: Path):
"""
Fixed-output derivations with a recursive SHA-256 hash should
produce the same path as "nix-store --add".
"""
res = nix.nix_build(["fixed.nix", "-A", "sameAsAdd", "--no-out-link"]).run().ok()
out = res.stdout_plain
fixed = files / "fixed"
# is failing as this isn't created for f2: shutil.rmtree(fixed)
(fixed / "bla").mkdir(parents=True)
foo = fixed / "foo"
foo.write_text("Hello World!")
(fixed / "bar").symlink_to(foo)
out2 = nix.nix_store(["--add", str(fixed)]).run().ok().stdout_plain
assert out == out2
out3 = (
nix.nix_store(["--add-fixed", "--recursive", "sha256", str(fixed)]).run().ok().stdout_plain
)
assert out == out3
out4 = (
nix.nix_store(
[
"--print-fixed-path",
"--recursive",
"sha256",
"1ixr6yd3297ciyp9im522dfxpqbkhcw0pylkb2aab915278fqaik",
"fixed",
]
)
.run()
.ok()
.stdout_plain
)
assert out == out4