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import platform
from unittest import mock
import pytest
from briefcase.config import GlobalConfig
from briefcase.exceptions import BriefcaseConfigError, UnsupportedPythonVersion
def _get_global_config(requires_python):
return GlobalConfig(
project_name="pep621-requires-python-testing",
version="0.0.1",
bundle="com.example",
requires_python=requires_python,
)
def test_no_requires_python(base_command, my_app):
"""If requires-python isn't set, no verification is necessary."""
base_command.global_config = _get_global_config(requires_python=None)
base_command.verify_required_python(my_app)
@pytest.mark.parametrize(
"requires_python",
(
"!= 3.2",
">= 3.2",
"> 3.2",
">= {current}",
"== {current}",
"~= {current}",
"<= {current}",
"< 3.100",
),
)
def test_requires_python_met(base_command, my_app, requires_python):
"""Validation passes if requires-python specifies a version compatible with the running interpreter."""
base_command.global_config = _get_global_config(
requires_python.format(current=platform.python_version())
)
base_command.verify_required_python(my_app)
@pytest.mark.parametrize(
"requires_python",
[
# Require a version higher than anything that can exist
"> 3.100",
">= 3.100",
# Require a version lower than anything that is supported
"< 3.2",
"<= 3.2",
# Equality with a version that definitely isn't supported
"== 2.0",
"~= 2.0",
],
)
def test_requires_python_unmet(base_command, my_app, requires_python):
"""Validation fails if requires-python specifies a version incompatible with the running interpreter."""
base_command.global_config = _get_global_config(requires_python)
with pytest.raises(UnsupportedPythonVersion):
base_command.verify_required_python(my_app)
def test_requires_python_invalid_specifier(base_command, my_app):
"""Validation fails if requires-python is not a valid specifier."""
base_command.global_config = _get_global_config(requires_python="0")
with pytest.raises(BriefcaseConfigError, match="Invalid requires-python"):
base_command.verify_required_python(my_app)
@mock.patch("platform.python_version")
def test_requires_python_prerelease(python_version_mock, base_command, my_app):
"""Verify that pre-release Python versions are included in matches."""
python_version_mock.return_value = "3.14.0a0"
base_command.global_config = _get_global_config(requires_python=">=3.12")
base_command.verify_required_python(my_app)
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