0f87d174b9
Every packse version update is currently causing a huge diff (the size of the `lock_scenarios.rs` diff in this PR). By redacting the version from the snapshots, we will only have the actual change in the diff and not the redundant version change noise. The second commit moves all remaining packse url arg values to `common/mod.rs`, which acts as a single source of truth for the packse version.
318 lines
9.7 KiB
Python
Executable File
318 lines
9.7 KiB
Python
Executable File
#!/usr/bin/env python3
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"""
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Generates and updates snapshot test cases from packse scenarios.
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Important:
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This script is the backend called by `./scripts/sync_scenarios.sh`, consider using that
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if not developing scenarios.
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Requirements:
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$ uv pip install -r scripts/scenarios/requirements.txt
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Uses `git`, `rustfmt`, and `cargo insta test` requirements from the project.
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Usage:
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Regenerate the scenario test files using the given scenarios:
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$ ./scripts/scenarios/generate.py <path>
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Scenarios can be developed locally with the following workflow:
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Serve scenarios on a local index using packse
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$ packse serve --no-hash <path to scenarios>
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Override the uv package index and update the tests
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$ UV_TEST_INDEX_URL="http://localhost:3141/simple/" ./scripts/scenarios/generate.py <path to scenarios>
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If an editable version of packse is installed, this script will use its bundled scenarios by default.
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"""
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import argparse
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import importlib.metadata
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import logging
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import os
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import re
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import subprocess
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import sys
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import textwrap
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from pathlib import Path
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TOOL_ROOT = Path(__file__).parent
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TEMPLATES = TOOL_ROOT / "templates"
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INSTALL_TEMPLATE = TEMPLATES / "install.mustache"
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COMPILE_TEMPLATE = TEMPLATES / "compile.mustache"
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LOCK_TEMPLATE = TEMPLATES / "lock.mustache"
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PACKSE = TOOL_ROOT / "packse-scenarios"
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REQUIREMENTS = TOOL_ROOT / "requirements.txt"
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PROJECT_ROOT = TOOL_ROOT.parent.parent
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TESTS = PROJECT_ROOT / "crates" / "uv" / "tests"
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INSTALL_TESTS = TESTS / "pip_install_scenarios.rs"
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COMPILE_TESTS = TESTS / "pip_compile_scenarios.rs"
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LOCK_TESTS = TESTS / "lock_scenarios.rs"
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TESTS_COMMON_MOD_RS = TESTS / "common/mod.rs"
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try:
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import packse
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import packse.inspect
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except ImportError:
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print(
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f"missing requirement `packse`: install the requirements at {REQUIREMENTS.relative_to(PROJECT_ROOT)}",
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file=sys.stderr,
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)
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exit(1)
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try:
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import chevron_blue
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except ImportError:
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print(
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f"missing requirement `chevron-blue`: install the requirements at {REQUIREMENTS.relative_to(PROJECT_ROOT)}",
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file=sys.stderr,
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)
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exit(1)
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def main(scenarios: list[Path], snapshot_update: bool = True):
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# Fetch packse version
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packse_version = importlib.metadata.version("packse")
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debug = logging.getLogger().getEffectiveLevel() <= logging.DEBUG
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update_common_mod_rs(packse_version)
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if not scenarios:
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if packse_version == "0.0.0":
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path = packse.__development_base_path__ / "scenarios"
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if path.exists():
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logging.info(
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"Detected development version of packse, using scenarios from %s",
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path,
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)
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scenarios = path.glob("*.json")
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else:
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logging.error(
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"No scenarios provided. Found development version of packse but is missing scenarios. Is it installed as an editable?"
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)
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sys.exit(1)
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else:
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logging.error("No scenarios provided, nothing to do.")
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return
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targets = []
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for target in scenarios:
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if target.is_dir():
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targets.extend(target.glob("**/*.json"))
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targets.extend(target.glob("**/*.toml"))
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else:
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targets.append(target)
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logging.info("Loading scenario metadata...")
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data = packse.inspect.inspect(
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targets=targets,
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no_hash=True,
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)
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data["scenarios"] = [
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scenario
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for scenario in data["scenarios"]
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# Drop example scenarios
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if not scenario["name"].startswith("example")
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]
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# Wrap the description onto multiple lines
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for scenario in data["scenarios"]:
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scenario["description_lines"] = textwrap.wrap(scenario["description"], width=80)
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# Wrap the expected explanation onto multiple lines
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for scenario in data["scenarios"]:
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expected = scenario["expected"]
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expected["explanation_lines"] = (
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textwrap.wrap(expected["explanation"], width=80)
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if expected["explanation"]
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else []
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)
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# Hack to track which scenarios require a specific Python patch version
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for scenario in data["scenarios"]:
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if "patch" in scenario["name"]:
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scenario["python_patch"] = True
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else:
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scenario["python_patch"] = False
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# We don't yet support local versions that aren't expressed as direct dependencies.
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for scenario in data["scenarios"]:
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expected = scenario["expected"]
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if scenario["name"] in (
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"local-less-than-or-equal",
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"local-simple",
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"local-transitive-confounding",
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"local-used-without-sdist",
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):
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expected["satisfiable"] = False
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expected["explanation"] = (
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"We do not have correct behavior for local version identifiers yet"
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)
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# Split scenarios into `install`, `compile` and `lock` cases
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install_scenarios = []
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compile_scenarios = []
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lock_scenarios = []
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for scenario in data["scenarios"]:
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resolver_options = scenario["resolver_options"] or {}
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if resolver_options.get("universal"):
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print(scenario["name"])
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lock_scenarios.append(scenario)
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elif resolver_options.get("python") is not None:
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compile_scenarios.append(scenario)
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else:
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install_scenarios.append(scenario)
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for template, tests, scenarios in [
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(INSTALL_TEMPLATE, INSTALL_TESTS, install_scenarios),
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(COMPILE_TEMPLATE, COMPILE_TESTS, compile_scenarios),
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(LOCK_TEMPLATE, LOCK_TESTS, lock_scenarios),
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]:
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data = {"scenarios": scenarios}
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ref = "HEAD" if packse_version == "0.0.0" else packse_version
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# Add generated metadata
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data["generated_from"] = (
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f"https://github.com/astral-sh/packse/tree/{ref}/scenarios"
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)
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data["generated_with"] = "./scripts/sync_scenarios.sh"
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data["vendor_links"] = (
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f"https://raw.githubusercontent.com/astral-sh/packse/{ref}/vendor/links.html"
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)
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data["index_url"] = os.environ.get(
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"UV_TEST_INDEX_URL",
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f"https://astral-sh.github.io/packse/{ref}/simple-html/",
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)
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# Render the template
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logging.info(f"Rendering template {template.name}")
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output = chevron_blue.render(
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template=template.read_text(), data=data, no_escape=True, warn=True
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)
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# Update the test files
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logging.info(
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f"Updating test file at `{tests.relative_to(PROJECT_ROOT)}`...",
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)
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with open(tests, "w") as test_file:
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test_file.write(output)
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# Format
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logging.info(
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"Formatting test file...",
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)
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subprocess.check_call(
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["rustfmt", str(tests)],
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stderr=subprocess.STDOUT,
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stdout=sys.stderr if debug else subprocess.DEVNULL,
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)
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# Update snapshots
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if snapshot_update:
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logging.info("Updating snapshots...")
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env = os.environ.copy()
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env["UV_TEST_PYTHON_PATH"] = str(PROJECT_ROOT / "bin")
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subprocess.call(
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[
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"cargo",
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"insta",
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"test",
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"--features",
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"pypi,python,python-patch",
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"--accept",
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"--test-runner",
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"nextest",
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"--test",
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tests.with_suffix("").name,
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],
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cwd=PROJECT_ROOT,
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stderr=subprocess.STDOUT,
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stdout=sys.stderr if debug else subprocess.DEVNULL,
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env=env,
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)
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else:
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logging.info("Skipping snapshot update")
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logging.info("Done!")
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def update_common_mod_rs(packse_version: str):
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"""Update the value of `PACKSE_VERSION` used in non-scenario tests.
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Example:
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```rust
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pub const PACKSE_VERSION: &str = "0.3.30";
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```
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"""
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test_common = TESTS_COMMON_MOD_RS.read_text()
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before_version = 'pub const PACKSE_VERSION: &str = "'
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after_version = '";'
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build_vendor_links_url = f"{before_version}{packse_version}{after_version}"
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if build_vendor_links_url in test_common:
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logging.info(f"Up-to-date: {TESTS_COMMON_MOD_RS}")
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else:
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logging.info(f"Updating: {TESTS_COMMON_MOD_RS}")
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url_matcher = re.compile(
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re.escape(before_version) + '[^"]+' + re.escape(after_version)
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)
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assert (
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len(url_matcher.findall(test_common)) == 1
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), f"PACKSE_VERSION not found in {TESTS_COMMON_MOD_RS}"
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test_common = url_matcher.sub(packse_version, test_common)
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TESTS_COMMON_MOD_RS.write_text(test_common)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(
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description="Generates and updates snapshot test cases from packse scenarios.",
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)
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parser.add_argument(
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"scenarios",
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type=Path,
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nargs="*",
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help="The scenario files to use",
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)
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parser.add_argument(
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"-v",
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"--verbose",
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action="store_true",
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help="Enable debug logging",
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)
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parser.add_argument(
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"-q",
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"--quiet",
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action="store_true",
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help="Disable logging",
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)
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parser.add_argument(
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"--no-snapshot-update",
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action="store_true",
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help="Disable automatic snapshot updates",
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)
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args = parser.parse_args()
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if args.quiet:
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log_level = logging.CRITICAL
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elif args.verbose:
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log_level = logging.DEBUG
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else:
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log_level = logging.INFO
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logging.basicConfig(level=log_level, format="%(message)s")
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main(args.scenarios, snapshot_update=not args.no_snapshot_update)
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