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from pathlib import Path
from random import randrange
from briefcase.integrations.linuxdeploy import (
ELF_PATCH_OFFSET,
ELF_PATCH_ORIGINAL_BYTES,
)
def create_mock_appimage(appimage_path: Path, mock_appimage_kind: str = "original"):
"""Create a mock AppImage for testing purposes.
:param appimage_path: Path to the appimage to create.
:param mock_appimage_kind: The kind of mock appimage to create. 'original' creates
an unpatched mock appimage. 'patched' creates a patched mock appimage. 'corrupt'
creates a corrupted mock appimage.
:returns: The bytes to be patched of the created AppImage.
"""
bytes_to_be_patched = None
appimage_headers = {
"original": bytes.fromhex("7f454c46020101004149020000000000"),
"patched": bytes.fromhex("7f454c46020101000000000000000000"),
"corrupt": bytes.fromhex("%030x" % randrange(16**30)),
"empty": b"",
}
appimage_path.parent.mkdir(parents=True, exist_ok=True)
appimage_path.touch()
with open(appimage_path, "w+b") as mock_appimage:
if mock_appimage_kind in appimage_headers:
mock_appimage.write(appimage_headers[mock_appimage_kind])
else:
raise ValueError(f"Unknown mock_appimage_kind: {mock_appimage_kind}")
mock_appimage.seek(ELF_PATCH_OFFSET)
bytes_to_be_patched = mock_appimage.read(len(ELF_PATCH_ORIGINAL_BYTES))
return bytes_to_be_patched
def side_effect_create_mock_appimage(appimage_path):
"""A test fixture side effect that creates an AppImage at the specified path."""
def _side_effect(*args, **kwargs):
create_mock_appimage(appimage_path=appimage_path)
return "new-downloaded-file"
return _side_effect
def side_effect_create_mock_tool(tool_path):
"""A test fixture side effect that creates an sh file at the specified path."""
def _side_effect(*args, **kwargs):
tool_path.parent.mkdir(parents=True)
with tool_path.open("w", encoding="utf-8") as f:
f.write("I am a complete tool")
return "new-downloaded-file"
return _side_effect
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