def test_save_and_load(self, tmp_path):
path = tmp_path / "doc.json"
doc = FileMappedDocument(path)
doc["number"] = 42
doc["nested"] = {"foo": "bar"}
doc.save()
doc = FileMappedDocument(path)
doc.load()
assert doc == {"number": 42, "nested": {"foo": "bar"}}
def test_load_merges_content(self, tmp_path):
path = tmp_path / "doc.json"
# save state
doc = FileMappedDocument(path)
doc["number"] = 42
doc["nested"] = {"foo": "bar"}
doc.save()
# save state from elsewhere
doc1 = FileMappedDocument(path)
doc1["another"] = 420
doc1["nested"]["baz"] = "ed"
doc1.save()
# load state
doc.load()
assert doc == {"number": 42, "another": 420, "nested": {"foo": "bar", "baz": "ed"}}