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import sys
from unittest.mock import MagicMock
import pytest
from briefcase.exceptions import BriefcaseCommandError
from briefcase.integrations.docker import DockerAppContext
def test_match(create_command, first_app_config, capsys):
"""If the system python matches the target python, everything is OK."""
first_app_config.python_version_tag = "3"
first_app_config.target_image = "somevendor:surprising"
create_command.tools[first_app_config].app_context = DockerAppContext(
tools=create_command.tools,
app=first_app_config,
)
# Mock a return value from Docker that matches the system Python
create_command.tools[first_app_config].app_context.check_output = MagicMock(
return_value=f"3.{sys.version_info.minor}\n"
)
# Verify python for the app
create_command.verify_docker_python(first_app_config)
# The docker container was interrogated for a Python version
create_command.tools[
first_app_config
].app_context.check_output.assert_called_once_with(
[
"python3",
"-c",
("import sys; print(f'{sys.version_info.major}.{sys.version_info.minor}')"),
]
)
# Warning message was not recorded
assert "WARNING: Python version mismatch!" not in capsys.readouterr().out
# The python version has been updated
assert first_app_config.python_version_tag == f"3.{sys.version_info.minor}"
def test_mismatch(create_command, first_app_config, capsys):
"""If the system python doesn't match the target python, a warning is raised."""
first_app_config.python_version_tag = "3"
first_app_config.target_image = "somevendor:surprising"
create_command.tools[first_app_config].app_context = DockerAppContext(
tools=create_command.tools,
app=first_app_config,
)
# Mock a return value from Docker that matches the system Python
create_command.tools[first_app_config].app_context.check_output = MagicMock(
return_value="3.42\n"
)
# Verify python for the app
create_command.verify_docker_python(first_app_config)
# The docker container was interrogated for a Python version
create_command.tools[
first_app_config
].app_context.check_output.assert_called_once_with(
[
"python3",
"-c",
("import sys; print(f'{sys.version_info.major}.{sys.version_info.minor}')"),
]
)
# Warning message was recorded
assert "WARNING: Python version mismatch!" in capsys.readouterr().out
# The python version has been updated
assert first_app_config.python_version_tag == "3.42"
def test_target_too_old(create_command, first_app_config):
"""If the target python is too old, an error is raised."""
first_app_config.python_version_tag = "3"
first_app_config.target_image = "somevendor:surprising"
create_command.console.warning = MagicMock()
create_command.tools[first_app_config].app_context = DockerAppContext(
tools=create_command.tools,
app=first_app_config,
)
# Mock a return value from Docker that is too old for Briefcase
create_command.tools[first_app_config].app_context.check_output = MagicMock(
return_value="3.7.16\n"
)
# Verify python for the app
with pytest.raises(
BriefcaseCommandError,
match=r"The system python3 version provided by somevendor:surprising "
r"is 3\.7\.16; Briefcase requires a minimum Python3 version of 3\.10\.",
):
create_command.verify_docker_python(first_app_config)
# The docker container was interrogated for a Python version
create_command.tools[
first_app_config
].app_context.check_output.assert_called_once_with(
[
"python3",
"-c",
("import sys; print(f'{sys.version_info.major}.{sys.version_info.minor}')"),
]
)
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