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import pytest
from briefcase.exceptions import UnsupportedHostError
from briefcase.integrations.file import File
def test_short_circuit(mock_tools):
"""Tool is not created if already cached."""
mock_tools.file = "tool"
tool = File.verify(mock_tools)
assert tool == "tool"
assert tool == mock_tools.file
def test_unsupported_os(mock_tools):
"""When host OS is not supported, an error is raised."""
mock_tools.host_os = "wonky"
# Delete download since it has already been verified
delattr(mock_tools, "file")
with pytest.raises(
UnsupportedHostError,
match=f"{File.name} is not supported on wonky",
):
File.verify(mock_tools)
def test_verify(mock_tools):
"""Verifying Download always returns/set download tool."""
file_tool = File.verify(mock_tools)
assert isinstance(file_tool, File)
assert file_tool is mock_tools.file
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