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Rework tests

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This commit is contained in:
Leandro Reina 2024-12-18 18:01:51 +01:00
parent b1663fa3fb
commit 726f8fd61f
1 changed files with 152 additions and 157 deletions
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51
tests/nixos/fetch-git/test-cases/lfs/default.nix
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@ -5,15 +5,13 @@
script = ''
from tempfile import TemporaryDirectory
expected_max_size_lfs_pointer = 1024 # 1 KiB (values >= than this cannot be pointers, and test files are >= 1 MiB)
expected_max_size_lfs_pointer = 1024 # 1 KiB (values >= than this cannot be pointers, and test files are 1 MiB)
# purge nix git cache to make sure we start with a clean slate
client.succeed("rm -rf ~/.cache/nix")
# Request lfs fetch without any .gitattributes file
############################################################################
with subtest("Request lfs fetch without any .gitattributes file"):
client.succeed(f"dd if=/dev/urandom of={repo.path}/regular bs=1M count=1 >&2")
client.succeed(f"{repo.git} add : >&2")
client.succeed(f"{repo.git} commit -m 'no .gitattributes' >&2")
@ -32,15 +30,14 @@
}}
"""
fetched_no_gitattributes = client.succeed(f"""
nix eval --impure --raw --expr '({fetchGit_no_gitattributes_expr}).outPath'
nix eval --debug --impure --raw --expr '({fetchGit_no_gitattributes_expr}).outPath'
""")
client.succeed(f"cmp {repo.path}/regular {fetched_no_gitattributes}/regular >&2")
# Add a file that should be tracked by lfs, but isn't
with subtest("Add a file that should be tracked by lfs, but isn't"):
# (git lfs cli only throws a warning "Encountered 1 file that should have
# been a pointer, but wasn't")
############################################################################
client.succeed(f"dd if=/dev/urandom of={repo.path}/black_sheep bs=1M count=1 >&2")
client.succeed(f"echo 'black_sheep filter=lfs -text' >>{repo.path}/.gitattributes")
@ -60,8 +57,8 @@
# check that the file is not a pointer, as expected
file_size_git = client.succeed(f"stat -c %s {tempdir}/black_sheep").strip()
assert int(file_size_git) >= expected_max_size_lfs_pointer, \
f"non lfs file is {file_size_git}b (<{expected_max_size_lfs_pointer}b), probably a test implementation error"
assert int(file_size_git) == 1024 * 1024, \
f"non lfs file is {file_size_git}b (!= 1MiB), probably a test implementation error"
lfs_files = client.succeed(f"git -C {tempdir} lfs ls-files").strip()
assert lfs_files == "", "non lfs file is tracked by lfs, probably a test implementation error"
@ -78,14 +75,14 @@
}}
"""
fetched_bad_lfs_without_lfs = client.succeed(f"""
nix eval --impure --raw --expr '({fetchGit_bad_lfs_without_lfs_expr}).outPath'
nix eval --debug --impure --raw --expr '({fetchGit_bad_lfs_without_lfs_expr}).outPath'
""")
# check that file was not somehow turned into a pointer
file_size_bad_lfs_without_lfs = client.succeed(f"stat -c %s {fetched_bad_lfs_without_lfs}/black_sheep").strip()
assert int(file_size_bad_lfs_without_lfs) >= expected_max_size_lfs_pointer, \
f"non lfs-enrolled file is {file_size_bad_lfs_without_lfs}b (<{expected_max_size_lfs_pointer}b), probably a test implementation error"
assert int(file_size_bad_lfs_without_lfs) == 1024 * 1024, \
f"non lfs-enrolled file is {file_size_bad_lfs_without_lfs}b (!= 1MiB), probably a test implementation error"
client.succeed(f"cmp {repo.path}/black_sheep {fetched_bad_lfs_without_lfs}/black_sheep >&2")
# finally fetch with lfs=true, and check that the bad file does not break anything
@ -98,15 +95,13 @@
}}
"""
fetchGit_bad_lfs_with_lfs = client.succeed(f"""
nix eval --impure --raw --expr '({fetchGit_bad_lfs_with_lfs_expr}).outPath'
nix eval --debug --impure --raw --expr '({fetchGit_bad_lfs_with_lfs_expr}).outPath'
""")
client.succeed(f"cmp {repo.path}/black_sheep {fetchGit_bad_lfs_with_lfs}/black_sheep >&2")
# Add an lfs-enrolled file to the repo
############################################################################
with subtest("Add an lfs-enrolled file to the repo"):
client.succeed(f"dd if=/dev/urandom of={repo.path}/beeg bs=1M count=1 >&2")
client.succeed(f"{repo.git} lfs install >&2")
client.succeed(f"{repo.git} lfs track --filename beeg >&2")
@ -127,14 +122,14 @@
}}
"""
fetched_nolfs = client.succeed(f"""
nix eval --impure --raw --expr '({fetchGit_nolfs_expr}).outPath'
nix eval --debug --impure --raw --expr '({fetchGit_nolfs_expr}).outPath'
""")
# check that file was not smudged
file_size_nolfs = client.succeed(f"stat -c %s {fetched_nolfs}/beeg").strip()
assert int(file_size_nolfs) < expected_max_size_lfs_pointer, \
f"did not set lfs=true, yet lfs-enrolled file is {file_size_nolfs}b (>{expected_max_size_lfs_pointer}b), probably smudged when we should not have"
f"did not set lfs=true, yet lfs-enrolled file is {file_size_nolfs}b (>= 1KiB), probably smudged when we should not have"
# now fetch with lfs=true and check that the file was smudged
fetchGit_lfs_expr = f"""
@ -146,7 +141,7 @@
}}
"""
fetched_lfs = client.succeed(f"""
nix eval --impure --raw --expr '({fetchGit_lfs_expr}).outPath'
nix eval --debug --impure --raw --expr '({fetchGit_lfs_expr}).outPath'
""")
assert fetched_lfs != fetched_nolfs, \
@ -154,12 +149,11 @@
# check that file was smudged
file_size_lfs = client.succeed(f"stat -c %s {fetched_lfs}/beeg").strip()
assert int(file_size_lfs) >= expected_max_size_lfs_pointer, \
f"set lfs=true, yet lfs-enrolled file is {file_size_lfs}b (<{expected_max_size_lfs_pointer}), probably did not smudge when we should have"
assert int(file_size_lfs) == 1024 * 1024, \
f"set lfs=true, yet lfs-enrolled file is {file_size_lfs}b (!= 1MiB), probably did not smudge when we should have"
# Check that default is lfs=false
############################################################################
with subtest("Check that default is lfs=false"):
fetchGit_default_expr = f"""
builtins.fetchGit {{
url = "{repo.remote}";
@ -168,17 +162,18 @@
}}
"""
fetched_default = client.succeed(f"""
nix eval --impure --raw --expr '({fetchGit_default_expr}).outPath'
nix eval --debug --impure --raw --expr '({fetchGit_default_expr}).outPath'
""")
# check that file was not smudged
file_size_default = client.succeed(f"stat -c %s {fetched_default}/beeg").strip()
assert int(file_size_default) < expected_max_size_lfs_pointer, \
f"did not set lfs, yet lfs-enrolled file is {file_size_default}b (>{expected_max_size_lfs_pointer}b), probably bad default value"
f"did not set lfs, yet lfs-enrolled file is {file_size_default}b (>= 1KiB), probably bad default value"
# Use as flake input
############################################################################
with subtest("Use as flake input"):
# May seem reduntant, but this has minor differences compared to raw
# fetchGit which caused failures before
with TemporaryDirectory() as tempdir:
client.succeed(f"mkdir -p {tempdir}")
client.succeed(f"""
@ -193,7 +188,7 @@
}}' >{tempdir}/flake.nix
""")
fetched_flake = client.succeed(f"""
nix eval --raw {tempdir}#.outPath
nix eval --debug --raw {tempdir}#.outPath
""")
assert fetched_lfs == fetched_flake, \