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# Copyright (c) 2011-2022, Manfred Moitzi
# License: MIT License
import pytest
import ezdxf
from ezdxf.entitydb import EntityDB
from ezdxf.entities.dxfentity import DXFEntity
from ezdxf.audit import Auditor
ENTITY = DXFEntity.new(handle="FFFF")
auditor = Auditor(ezdxf.new())
@pytest.fixture
def db():
db = EntityDB()
db["FEFE"] = ENTITY
return db
def test_get_value(db):
assert ENTITY is db["FEFE"]
def test_set_value(db):
new_entity = DXFEntity.new(handle="FEFE")
db["FEFE"] = new_entity
assert new_entity is db["FEFE"]
def test_del_value(db):
del db["FEFE"]
with pytest.raises(KeyError):
_ = db["FEFE"]
assert len(db) == 0
def test_delete_entity():
db = EntityDB()
entity = DXFEntity()
db.add(entity)
assert len(db) == 1
db.delete_entity(entity)
assert len(db) == 0
def test_delete_dead_entity_entity():
db = EntityDB()
entity = DXFEntity.new(handle="FEFE")
db.add(entity)
assert len(db) == 1
entity.destroy()
# delete_entity() should not raise an error if entity is not alive!
db.delete_entity(entity)
# but entity.destroy() does not remove entity from EntityDB!
assert "FEFE" in db
assert len(db) == 1
# Auditor() removes such dead entities from database see test_restore_integrity_purge()
def test_keys(db):
assert list(db.keys()) == ["FEFE"]
def test_values(db):
assert list(db.values()) == [ENTITY]
def test_items(db):
assert list(db.items()) == [("FEFE", ENTITY)]
def test_get(db):
assert db.get("ABCD") is None
def test_add_tags():
db = EntityDB()
db.add(ENTITY)
assert "FFFF" in db
def test_len(db):
assert len(db) == 1
def test_restore_integrity_purge():
db = EntityDB()
e = DXFEntity.new()
db.add(e)
assert len(db) == 1
db.audit(auditor)
assert len(db) == 1
e.destroy()
db.audit(auditor)
assert len(db) == 0
def test_restore_integrity_recover():
db = EntityDB()
e = DXFEntity.new(handle="ABBA")
db.add(e)
assert len(db) == 1
# modify handle
e.dxf.handle = "FEFE"
assert "ABBA" in db
assert "FEFE" not in db
db.audit(auditor)
assert len(db) == 1
assert "FEFE" in db
assert "ABBA" not in db
def test_restore_integrity_remove_invalid_None():
db = EntityDB()
e = DXFEntity.new()
db.add(e)
assert len(db) == 1
# set invalid handle
e.dxf.handle = None
db.audit(auditor)
assert len(db) == 0
def test_restore_integrity_remove_invalid_handle():
db = EntityDB()
e = DXFEntity.new(handle="ABBA")
db.add(e)
assert len(db) == 1
# set invalid handle
e.dxf.handle = "XFFF"
db.audit(auditor)
assert len(db) == 0
def test_add_entity_multiple_times():
db = EntityDB()
e = DXFEntity()
db.add(e)
handle = e.dxf.handle
assert len(db) == 1
db.add(e)
assert e.dxf.handle == handle, "handle must not change"
assert len(db) == 1, "do not store same entity multiple times"
def test_discard_contained_entity():
db = EntityDB()
e = DXFEntity()
db.add(e)
assert len(db) == 1
db.discard(e)
assert len(db) == 0
assert e.dxf.handle is None
def test_discard_entity_with_none_handle():
db = EntityDB()
e = DXFEntity()
assert e.dxf.handle is None
# call should not raise any Exception
db.discard(e)
# 2nd call should not raise any Exception
db.discard(e)
def test_discard_entity_with_handle_not_in_database():
db = EntityDB()
e = DXFEntity()
e.dxf.handle = "ABBA"
assert e.dxf.handle not in db
# call should not raise any Exception
db.discard(e)
# 2nd call should not raise any Exception
db.discard(e)
assert (
e.dxf.handle is "ABBA"
), "set handle to None, only if entity was removed"
def test_trashcan_context_manager():
db = EntityDB()
entities = [DXFEntity() for _ in range(5)]
for e in entities:
db.add(e)
handles = list(db.keys())
with db.trashcan() as trashcan:
trashcan.add(handles[0])
trashcan.add(handles[1])
assert len(db) == 3
assert entities[0].is_alive is False
assert entities[1].is_alive is False
def test_reset_entity_handle():
db = EntityDB()
entity = DXFEntity()
db.add(entity)
assert db.reset_handle(entity, "FEFE") is True
assert entity.dxf.handle == "FEFE"
assert "FEFE" in db
def test_can_not_reset_entity_handle():
"""Can not reset the DXF handle of an entity to a handle, which is already
used by another entity.
"""
db = EntityDB()
entity1 = DXFEntity()
entity2 = DXFEntity()
db.add(entity1)
db.add(entity2)
handle = entity1.dxf.handle
assert db.reset_handle(entity1, entity2.dxf.handle) is False
assert entity1.dxf.handle == handle
def test_query_method_exist():
db = EntityDB()
db.add(DXFEntity())
db.add(DXFEntity())
assert len(db.query()) == 2
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