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yadm/test/test_alt.py
Erik Flodin b2b0b143d6
Refactor alt handling
* Simplify score_file() by using case in instead of nested ifs with regexps.
* Merge record_score() and record_template().
* Alt condition processing no longer stops when a template condition is seen
  but continues processing to verify that all conditions are valid (as the
  documentation says it should). Fixes #478.
* Support alt dirs with deeply nested tracked files (fixes #490).
* Use git ls-files to filter out which tracked files to consider for alt
  processing. Should speed up auto-alt (#505).
* Use nocasematch when comparing distro and distro_family. Fixed #455.
2024-12-06 23:10:52 +01:00

318 lines
11 KiB
Python

"""Test alt"""
import os
import string
import py
import pytest
import utils
TEST_PATHS = [utils.ALT_FILE1, utils.ALT_FILE2, utils.ALT_DIR]
@pytest.mark.usefixtures("ds1_copy")
@pytest.mark.parametrize("yadm_alt", [True, False], ids=["alt", "worktree"])
@pytest.mark.parametrize(
"tracked,encrypt,exclude",
[
(False, False, False),
(True, False, False),
(False, True, False),
(False, True, True),
],
ids=["untracked", "tracked", "encrypted", "excluded"],
)
def test_alt_source(runner, paths, tracked, encrypt, exclude, yadm_alt):
"""Test yadm alt operates on all expected sources of alternates"""
yadm_dir, yadm_data = setup_standard_yadm_dir(paths)
utils.create_alt_files(
paths, "##default", tracked=tracked, encrypt=encrypt, exclude=exclude, yadm_alt=yadm_alt, yadm_dir=yadm_dir
)
run = runner([paths.pgm, "-Y", yadm_dir, "--yadm-data", yadm_data, "alt"])
assert run.success
assert run.err == ""
linked = utils.parse_alt_output(run.out)
basepath = yadm_dir.join("alt") if yadm_alt else paths.work
for link_path in TEST_PATHS:
source_file_content = link_path + "##default"
source_file = basepath.join(source_file_content)
link_file = paths.work.join(link_path)
if tracked or (encrypt and not exclude):
assert link_file.islink()
target = py.path.local(os.path.realpath(link_file))
if target.isfile():
assert link_file.read() == source_file_content
assert str(source_file) in linked
else:
assert link_file.join(utils.CONTAINED).read() == source_file_content
assert str(source_file) in linked
else:
assert not link_file.exists()
assert str(source_file) not in linked
@pytest.mark.usefixtures("ds1_copy")
@pytest.mark.parametrize("yadm_alt", [True, False], ids=["alt", "worktree"])
def test_relative_link(runner, paths, yadm_alt):
"""Confirm links created are relative"""
yadm_dir, yadm_data = setup_standard_yadm_dir(paths)
utils.create_alt_files(
paths, "##default", tracked=True, encrypt=False, exclude=False, yadm_alt=yadm_alt, yadm_dir=yadm_dir
)
run = runner([paths.pgm, "-Y", yadm_dir, "--yadm-data", yadm_data, "alt"])
assert run.success
assert run.err == ""
basepath = yadm_dir.join("alt") if yadm_alt else paths.work
for link_path in TEST_PATHS:
source_file_content = link_path + "##default"
source_file = basepath.join(source_file_content)
link_file = paths.work.join(link_path)
link = link_file.readlink()
relpath = os.path.relpath(source_file, start=os.path.dirname(link_file))
assert link == relpath
@pytest.mark.usefixtures("ds1_copy")
@pytest.mark.parametrize(
"suffix",
[
"##default",
"##default,e.txt",
"##default,extension.txt",
"##a.$tst_arch",
"##arch.$tst_arch",
"##o.$tst_sys",
"##os.$tst_sys",
"##d.$tst_distro",
"##distro.$tst_distro",
"##f.$tst_distro_family",
"##distro_family.$tst_distro_family",
"##c.$tst_class",
"##class.$tst_class",
"##h.$tst_host",
"##hostname.$tst_host",
"##u.$tst_user",
"##user.$tst_user",
],
)
def test_alt_conditions(runner, paths, tst_arch, tst_sys, tst_distro, tst_distro_family, tst_host, tst_user, suffix):
"""Test conditions supported by yadm alt"""
yadm_dir, yadm_data = setup_standard_yadm_dir(paths)
# set the class
tst_class = "testclass"
utils.set_local(paths, "class", tst_class + ".before")
utils.set_local(paths, "class", tst_class, add=True)
utils.set_local(paths, "class", tst_class + ".after", add=True)
suffix = string.Template(suffix).substitute(
tst_arch=tst_arch,
tst_sys=tst_sys,
tst_distro=tst_distro,
tst_distro_family=tst_distro_family,
tst_class=tst_class,
tst_host=tst_host,
tst_user=tst_user,
)
utils.create_alt_files(paths, suffix)
run = runner([paths.pgm, "-Y", yadm_dir, "--yadm-data", yadm_data, "alt"])
assert run.success
assert run.err == ""
linked = utils.parse_alt_output(run.out)
for link_path in TEST_PATHS:
source_file = link_path + suffix
assert paths.work.join(link_path).islink()
target = py.path.local(os.path.realpath(paths.work.join(link_path)))
if target.isfile():
assert paths.work.join(link_path).read() == source_file
assert str(paths.work.join(source_file)) in linked
else:
assert paths.work.join(link_path).join(utils.CONTAINED).read() == source_file
assert str(paths.work.join(source_file)) in linked
@pytest.mark.usefixtures("ds1_copy")
@pytest.mark.parametrize("kind", ["default", "", None, "envtpl", "j2cli", "j2", "esh"])
@pytest.mark.parametrize(
"label",
[
"t",
"template",
"yadm",
],
)
def test_alt_templates(runner, paths, kind, label):
"""Test templates supported by yadm alt"""
yadm_dir, yadm_data = setup_standard_yadm_dir(paths)
suffix = f"##{label}.{kind}"
if kind is None:
suffix = f"##{label}"
utils.create_alt_files(paths, suffix)
run = runner([paths.pgm, "-Y", yadm_dir, "--yadm-data", yadm_data, "alt"])
assert run.success
assert run.err == ""
created = utils.parse_alt_output(run.out, linked=False)
for created_path in TEST_PATHS:
if created_path != utils.ALT_DIR:
source_file = created_path + suffix
assert paths.work.join(created_path).isfile()
assert paths.work.join(created_path).read().strip() == source_file
assert str(paths.work.join(source_file)) in created
@pytest.mark.usefixtures("ds1_copy")
def test_alt_template_with_condition(runner, paths, tst_arch):
"""Test template with extra condition"""
yadm_dir, yadm_data = setup_standard_yadm_dir(paths)
suffix = f"##template,arch.not{tst_arch}"
utils.create_alt_files(paths, suffix)
run = runner([paths.pgm, "-Y", yadm_dir, "--yadm-data", yadm_data, "alt"])
assert run.success
assert run.err == ""
created = utils.parse_alt_output(run.out, linked=False)
assert len(created) == 0
@pytest.mark.usefixtures("ds1_copy")
@pytest.mark.parametrize("autoalt", [None, "true", "false"])
def test_auto_alt(runner, yadm_cmd, paths, autoalt):
"""Test auto alt"""
# set the value of auto-alt
if autoalt:
os.system(" ".join(yadm_cmd("config", "yadm.auto-alt", autoalt)))
utils.create_alt_files(paths, "##default")
run = runner(yadm_cmd("status"))
assert run.success
assert run.err == ""
linked = utils.parse_alt_output(run.out)
for link_path in TEST_PATHS:
source_file = link_path + "##default"
if autoalt == "false":
assert not paths.work.join(link_path).exists()
else:
assert paths.work.join(link_path).islink()
target = py.path.local(os.path.realpath(paths.work.join(link_path)))
if target.isfile():
assert paths.work.join(link_path).read() == source_file
# no linking output when run via auto-alt
assert str(paths.work.join(source_file)) not in linked
else:
assert paths.work.join(link_path).join(utils.CONTAINED).read() == source_file
# no linking output when run via auto-alt
assert str(paths.work.join(source_file)) not in linked
@pytest.mark.usefixtures("ds1_copy")
def test_stale_link_removal(runner, yadm_cmd, paths):
"""Stale links to alternative files are removed
This test ensures that when an already linked alternative becomes invalid
due to a change in class, the alternate link is removed.
"""
# set the class
tst_class = "testclass"
utils.set_local(paths, "class", tst_class)
# create files which match the test class
utils.create_alt_files(paths, f"##class.{tst_class}")
# run alt to trigger linking
run = runner(yadm_cmd("alt"))
assert run.success
assert run.err == ""
linked = utils.parse_alt_output(run.out)
# assert the proper linking has occurred
for stale_path in TEST_PATHS:
source_file = stale_path + "##class." + tst_class
assert paths.work.join(stale_path).islink()
target = py.path.local(os.path.realpath(paths.work.join(stale_path)))
if target.isfile():
assert paths.work.join(stale_path).read() == source_file
assert str(paths.work.join(source_file)) in linked
else:
assert paths.work.join(stale_path).join(utils.CONTAINED).read() == source_file
assert str(paths.work.join(source_file)) in linked
# change the class so there are no valid alternates
utils.set_local(paths, "class", "changedclass")
# run alt to trigger linking
run = runner(yadm_cmd("alt"))
assert run.success
assert run.err == ""
linked = utils.parse_alt_output(run.out)
# assert the linking is removed
for stale_path in TEST_PATHS:
source_file = stale_path + "##class." + tst_class
assert not paths.work.join(stale_path).exists()
assert str(paths.work.join(source_file)) not in linked
@pytest.mark.usefixtures("ds1_repo_copy")
def test_template_overwrite_symlink(runner, yadm_cmd, paths, tst_sys):
"""Remove symlinks before processing a template
If a symlink is in the way of the output of a template, the target of the
symlink will get the template content. To prevent this, the symlink should
be removed just before processing a template.
"""
target = paths.work.join(f"test_link##os.{tst_sys}")
target.write("target")
link = paths.work.join("test_link")
link.mksymlinkto(target, absolute=1)
template = paths.work.join("test_link##template.default")
template.write("test-data")
run = runner(yadm_cmd("add", target, template))
assert run.success
assert run.err == ""
assert run.out == ""
assert not link.islink()
assert target.read().strip() == "target"
assert link.read().strip() == "test-data"
@pytest.mark.usefixtures("ds1_copy")
@pytest.mark.parametrize("style", ["symlink", "template"])
def test_ensure_alt_path(runner, paths, style):
"""Test that directories are created before making alternates"""
yadm_dir, yadm_data = setup_standard_yadm_dir(paths)
suffix = "default" if style == "symlink" else "template"
filename = "a/b/c/file"
source = yadm_dir.join(f"alt/{filename}##{suffix}")
source.write("test-data", ensure=True)
run = runner([paths.pgm, "-Y", yadm_dir, "--yadm-data", yadm_data, "add", source])
assert run.success
assert run.err == ""
assert run.out == ""
assert paths.work.join(filename).read().strip() == "test-data"
def setup_standard_yadm_dir(paths):
"""Configure a yadm home within the work tree"""
std_yadm_dir = paths.work.mkdir(".config").mkdir("yadm")
std_yadm_data = paths.work.mkdir(".local").mkdir("share").mkdir("yadm")
std_yadm_data.join("repo.git").mksymlinkto(paths.repo, absolute=1)
std_yadm_dir.join("encrypt").mksymlinkto(paths.encrypt, absolute=1)
return std_yadm_dir, std_yadm_data