Merge branch '57-segfault-on-model-reuse-in-multiple-stores' into 'dev'

Resolve "Segfault on Model reuse in multiple Stores"

Closes #57

See merge request objectbox/objectbox-python!42

Author: dan-obx

tests/test_model.py

@@ -0,0 +1,83 @@
+from objectbox.model import *
+from objectbox import *
+from objectbox.model.idsync import sync_model
+import os
+import os.path
+    
+def test_reuse_model():
+    @Entity()
+    class MyEntity:
+        id = Id()
+        name = String()
+
+    model = Model()
+    model.entity(MyEntity)
+    model_filepath = "test-model.json"
+    if os.path.exists(model_filepath):
+        os.remove(model_filepath)
+    sync_model(model, model_filepath)
+
+    db1path = "test-db1"
+    db2path = "test-db2"
+    Store.remove_db_files(db1path)
+    Store.remove_db_files(db2path)
+
+    store1 = Store(model=model, directory=db1path)
+    store2 = Store(model=model, directory=db2path)
+
+    store1.close()
+    store2.close()
+
+
+def test_reuse_entity():
+    @Entity()
+    class MyEntity:
+        id = Id()
+        name = String()
+
+    m1 = Model()
+    m1.entity(MyEntity)
+    model_filepath = "test-model1.json"
+    if os.path.exists(model_filepath):
+        os.remove(model_filepath)
+    sync_model(m1, model_filepath)
+
+    db1path = "test-db1"
+    db2path = "test-db2"
+    Store.remove_db_files(db1path)
+    Store.remove_db_files(db2path)
+
+    store1 = Store(model=m1, directory=db1path)
+
+    box1 = store1.box(MyEntity)
+    box1.put(MyEntity(name="foo"))
+    assert box1.count() == 1
+
+    m2 = Model()
+    
+    @Entity()
+    class MyEntity2:
+        id = Id()
+        name = String()
+        value = Int64()
+    
+    m2.entity(MyEntity2)
+    m2.entity(MyEntity)
+    model_filepath = "test-model2.json"
+    if os.path.exists(model_filepath):
+        os.remove(model_filepath)
+    sync_model(m2, model_filepath)
+
+    store2 = Store(model=m2, directory=db2path)
+    box2 = store2.box(MyEntity)
+    box2.put(MyEntity(name="bar"))
+    box2.put(MyEntity(name="bar"))
+    box2.put(MyEntity(name="bar"))
+    assert box2.count() == 3
+
+    box1.put(MyEntity(name="foo"))
+    box1.put(MyEntity(name="foo"))
+    assert box1.count() == 3
+    
+    store1.close()
+    store2.close()