202 lines
7.3 KiB
Python
202 lines
7.3 KiB
Python
"""Tests that version strings can be produced reliably."""
|
|
|
|
import subprocess
|
|
import os
|
|
import re
|
|
import tempfile
|
|
import shutil
|
|
import warnings
|
|
|
|
|
|
from hypothesis import strategies as st
|
|
from hypothesis.errors import NonInteractiveExampleWarning
|
|
import pytest
|
|
|
|
from openflexure_microscope_server import utilities
|
|
|
|
|
|
# This is the regex provided by https://semver.org/
|
|
SEMVER_REGEX = re.compile(
|
|
r"^(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)"
|
|
r"(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)"
|
|
r"(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?"
|
|
r"(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"
|
|
)
|
|
|
|
# Use hypothesis to generate random filenames
|
|
FILE_NAME_GEN = st.from_regex(r"[a-zA-Z_-]{5,20}\.[a-z]{1,5}", fullmatch=True)
|
|
# Use hypothesis to generate random data for files
|
|
FILE_DATA_GEN = st.from_regex(r"[a-zA-Z_-]{5,20}\.[a-z]{1,5}", fullmatch=True)
|
|
|
|
|
|
def create_fake_file() -> None:
|
|
"""Create a file with a random name and random content in the working directory."""
|
|
with warnings.catch_warnings():
|
|
# Ignore hypothesis warning as we are not using for hypothesis testing but just
|
|
# as a convenient way to create random files for Git.
|
|
warnings.filterwarnings("ignore", category=NonInteractiveExampleWarning)
|
|
|
|
fname = FILE_NAME_GEN.example()
|
|
with open(fname, "w", encoding="utf-8") as file_obj:
|
|
file_obj.write(FILE_DATA_GEN.example())
|
|
|
|
|
|
def _git(command: str) -> str:
|
|
"""Run a git command in a subprocess."""
|
|
git_command = ["git"] + command.split()
|
|
# Use check=True so an error is raised if git has a problem. Only read STDOUT
|
|
result = subprocess.run(git_command, check=True, capture_output=True)
|
|
return result.stdout.decode().strip()
|
|
|
|
|
|
def test_reading_hash_from_git():
|
|
"""Use create a Git repo and check that hash can be read.
|
|
|
|
The performs a series of directory and git operations, commented as they go.
|
|
"""
|
|
working_dir = os.getcwd()
|
|
try:
|
|
with tempfile.TemporaryDirectory() as tmpdir:
|
|
os.chdir(tmpdir)
|
|
git_dir = os.path.join(tmpdir, ".git")
|
|
# Git dir not created yet. Returns Undefined
|
|
assert utilities._get_hash_from_git_dir(git_dir) == "Undefined"
|
|
|
|
# Initialised. Should still be undefined.
|
|
_git("init")
|
|
assert utilities._get_hash_from_git_dir(git_dir) == "Undefined"
|
|
|
|
# Create some fake files and commit them.
|
|
create_fake_file()
|
|
create_fake_file()
|
|
_git("add -A")
|
|
_git("commit -m 'message'")
|
|
git_hash1 = _git("rev-parse HEAD")
|
|
# Check we read the hash the same as the git executable
|
|
assert utilities._get_hash_from_git_dir(git_dir) == git_hash1
|
|
|
|
# Create more fake files and check again.
|
|
create_fake_file()
|
|
create_fake_file()
|
|
_git("add -A")
|
|
_git("commit -m 'message'")
|
|
git_hash2 = _git("rev-parse HEAD")
|
|
assert utilities._get_hash_from_git_dir(git_dir) == git_hash2
|
|
|
|
# Save the branch name (robust to the default branch name changing)
|
|
branch_name = _git("rev-parse --abbrev-ref HEAD")
|
|
|
|
# Check out the old commit in detached HEAD and check it is correct
|
|
_git(f"checkout {git_hash1}")
|
|
assert utilities._get_hash_from_git_dir(git_dir) == git_hash1
|
|
|
|
# Check out the branch and check commit changed back
|
|
_git(f"checkout {branch_name}")
|
|
assert utilities._get_hash_from_git_dir(git_dir) == git_hash2
|
|
finally:
|
|
# Return to original working dir
|
|
os.chdir(working_dir)
|
|
|
|
|
|
@pytest.fixture
|
|
def git_repo():
|
|
"""Return a git repo path (set as working dir) with couple of commits."""
|
|
working_dir = os.getcwd()
|
|
try:
|
|
with tempfile.TemporaryDirectory() as tmpdir:
|
|
os.chdir(tmpdir)
|
|
# Initialise, create files and commit a couple of times
|
|
_git("init")
|
|
create_fake_file()
|
|
create_fake_file()
|
|
_git("add -A")
|
|
_git("commit -m 'message'")
|
|
create_fake_file()
|
|
create_fake_file()
|
|
_git("add -A")
|
|
_git("commit -m 'message'")
|
|
|
|
yield tmpdir
|
|
|
|
finally:
|
|
# Return to original working dir
|
|
os.chdir(working_dir)
|
|
|
|
|
|
def test_reading_hash_from_broken_git_dir(git_repo):
|
|
"""Break a git dir and check the hash is "Undefined"."""
|
|
git_dir = os.path.join(git_repo, ".git")
|
|
|
|
# Break the git directory and check the hash is undefined
|
|
shutil.move(
|
|
os.path.join(git_dir, "refs"),
|
|
os.path.join(git_dir, "refs1"),
|
|
copy_function=shutil.copytree,
|
|
)
|
|
assert utilities._get_hash_from_git_dir(git_dir) == "Undefined"
|
|
|
|
# Fix it and check it works again
|
|
shutil.move(
|
|
os.path.join(git_dir, "refs1"),
|
|
os.path.join(git_dir, "refs"),
|
|
copy_function=shutil.copytree,
|
|
)
|
|
|
|
commit_hash = utilities._get_hash_from_git_dir(git_dir)
|
|
assert utilities.COMMIT_REGEX.match(commit_hash) is not None
|
|
|
|
# Break the git directory differently and check the hash is undefined
|
|
os.remove(os.path.join(git_dir, "HEAD"))
|
|
assert utilities._get_hash_from_git_dir(git_dir) == "Undefined"
|
|
|
|
|
|
def test_reading_hash_from_broken_git_ref_file(git_repo):
|
|
"""Break the git ref file and check the hash is "Undefined"."""
|
|
git_dir = os.path.join(git_repo, ".git")
|
|
branch_name = _git("rev-parse --abbrev-ref HEAD")
|
|
ref_path = os.path.join(git_dir, "refs", "heads", branch_name)
|
|
# Check commit can be read
|
|
commit_hash = utilities._get_hash_from_git_dir(git_dir)
|
|
assert utilities.COMMIT_REGEX.match(commit_hash) is not None
|
|
# Write something into the ref file
|
|
with open(ref_path, "w", encoding="utf-8") as head_file:
|
|
head_file.write("This is now broken")
|
|
# It is now undefined
|
|
assert utilities._get_hash_from_git_dir(git_dir) == "Undefined"
|
|
|
|
|
|
def test_reading_hash_from_broken_git_head_file(git_repo):
|
|
"""Break the git HEAD file and check the hash is "Undefined"."""
|
|
git_dir = os.path.join(git_repo, ".git")
|
|
head_path = os.path.join(git_dir, "HEAD")
|
|
# Check commit can be read
|
|
commit_hash = utilities._get_hash_from_git_dir(git_dir)
|
|
assert utilities.COMMIT_REGEX.match(commit_hash) is not None
|
|
# Write something into the ref file
|
|
with open(head_path, "w", encoding="utf-8") as ref_file:
|
|
ref_file.write("This is now broken")
|
|
# It is now undefined
|
|
assert utilities._get_hash_from_git_dir(git_dir) == "Undefined"
|
|
|
|
|
|
def test_reading_version_from_toml():
|
|
"""Check version string can be read from this project's TOML file.
|
|
|
|
As we only expect to ever read our own TOML file there is not a need to do
|
|
excessive testing on different generated TOML files.
|
|
"""
|
|
project_toml_path = os.path.join(utilities.REPO_DIR, "pyproject.toml")
|
|
ver_string = utilities._get_version_from_toml(project_toml_path)
|
|
# Check version does follow semantic versioning.
|
|
assert SEMVER_REGEX.match(ver_string)
|
|
# Explicit check
|
|
assert ver_string == "3.0.0-alpha1"
|
|
|
|
|
|
def test_error_reading_version_from_toml():
|
|
"""Check Undefined is returned if error reading TOML file."""
|
|
# Just give it the wrong path.
|
|
project_toml_path = os.path.join(utilities.REPO_DIR, "pyppproject.toml")
|
|
ver_string = utilities._get_version_from_toml(project_toml_path)
|
|
# Explicit check
|
|
assert ver_string == "Undefined"
|