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# Copyright (c) 2022, Manfred Moitzi
# License: MIT License
import pytest
import ezdxf
CONST_GUID = "{00000000-0000-0000-0000-000000000000}"
FINGERPRINT_GUID = "$FINGERPRINTGUID"
VERSION_GUID = "$VERSIONGUID"
def test_guids_are_created_for_new_docs():
doc = ezdxf.new()
assert doc.header[FINGERPRINT_GUID] != CONST_GUID
assert doc.header[VERSION_GUID] != CONST_GUID
def test_guids_are_preserved_at_loading(tmp_path):
filepath = tmp_path / "doc1.dxf"
doc = ezdxf.new()
doc.saveas(filepath)
doc1 = ezdxf.readfile(filepath)
assert doc1.header[FINGERPRINT_GUID] == doc.header[FINGERPRINT_GUID]
assert doc1.header[VERSION_GUID] == doc.header[VERSION_GUID]
def test_fingerprint_guid_is_preserved_at_export(tmp_path):
filepath1 = tmp_path / "doc1.dxf"
filepath2 = tmp_path / "doc2.dxf"
doc = ezdxf.new()
doc.saveas(filepath1)
doc1 = ezdxf.readfile(filepath1)
doc1.saveas(filepath2)
doc2 = ezdxf.readfile(filepath2)
assert doc1.header[FINGERPRINT_GUID] == doc.header[FINGERPRINT_GUID]
assert doc1.header[FINGERPRINT_GUID] == doc2.header[FINGERPRINT_GUID]
def test_version_guid_changes_at_export(tmp_path):
filepath1 = tmp_path / "doc1.dxf"
filepath2 = tmp_path / "doc2.dxf"
doc = ezdxf.new()
doc.saveas(filepath1)
doc1 = ezdxf.readfile(filepath1)
assert doc1.header[VERSION_GUID] == doc.header[VERSION_GUID]
# Exporting a new version of this document, $VERSIONGUID must change.
old_version_guid = doc1.header[VERSION_GUID]
doc1.saveas(filepath2) # changes $VERSIONGUID of doc1!
assert old_version_guid != doc1.header[VERSION_GUID]
doc2 = ezdxf.readfile(filepath2)
assert old_version_guid != doc2.header[VERSION_GUID]
assert doc1.header[VERSION_GUID] == doc2.header[VERSION_GUID]
if __name__ == '__main__':
pytest.main([__file__])
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