def test_with_unknown_field(data_store_path, caplog):
"""Test `create` when the user has an unknown field."""
caplog.set_level(logging.WARNING)
data_store = JSONDataStore(file_path=str(data_store_path))
user = {
"name": "Eric Idle",
"phone": "123-456-7890",
"address": "here",
"foobar": "baz",
}
data_store.create(user)
expected_data = [{
"name": "Eric Idle",
"phone": "123-456-7890",
"address": "here"
}]
assert data_store._users == expected_data
assert json.loads(data_store_path.read_text()) == expected_data
for record in caplog.records:
if "foobar" in record.getMessage():
break
else:
pytest.fail(
"Unable to find warning message with unknown field 'foobar'")
def test_with_populated_file(data_store_path):
"""Test creating a user when the data store is not empty."""
data_set = [
{
"name": "John Cleese",
"phone": "111-222-3333",
"address": "there"
},
]
data_store_path.write_text(json.dumps(data_set))
data_store = JSONDataStore(file_path=str(data_store_path))
assert data_store._users == data_set
data_store.create({
"name": "Eric Idle",
"phone": "123-456-7890",
"address": "here"
})
expected_data = [
{
"name": "John Cleese",
"phone": "111-222-3333",
"address": "there"
},
{
"name": "Eric Idle",
"phone": "123-456-7890",
"address": "here"
},
]
assert data_store._users == expected_data
assert json.loads(data_store_path.read_text()) == expected_data
def test_with_missing_required_fields(data_store_path, missing_fields):
"""Test `create` when the user is missing a required field."""
data_store = JSONDataStore(file_path=str(data_store_path))
user = {"name": "Eric Idle", "phone": "123-456-7890", "address": "here"}
for missing_field in missing_fields:
del user[missing_field]
with pytest.raises(InvalidUserError) as error:
data_store.create(user)
error_msg = str(error.value)
for missing_field in missing_fields:
assert missing_field in error_msg
def test_with_duplicate_user(data_store_path):
"""Test `create` when the user already exists."""
data_set = [{
"name": "Eric Idle",
"phone": "123-456-7890",
"address": "here"
}]
data_store_path.write_text(json.dumps(data_set))
data_store = JSONDataStore(file_path=str(data_store_path))
assert data_store._users == data_set
user = {
"name": "Eric Idle",
"phone": "999-999-9999",
"address": "not here"
}
with pytest.raises(DuplicateUserError) as error:
data_store.create(user)
assert "Eric Idle" in str(error.value)