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import pytest
from pathlib import Path
from ymlstash import YmlStash
from dataclasses import dataclass
from typing import ClassVar, Optional
TEST_STASH_PATH = Path("/tmp")
@dataclass
class User:
name: str
age: int
def test_stash_path():
stash = YmlStash(User, ".")
assert stash.path == Path(".")
stash = YmlStash(User, Path("."))
assert stash.path == Path(".")
def test_invalid():
with pytest.raises(Exception):
YmlStash(User, "/tmp/does/not/exist")
with pytest.raises(Exception) as e:
YmlStash(object, ".")
assert "is not a dataclass" in e.value.args[0]
def test_stash():
stash = YmlStash(User, TEST_STASH_PATH)
yuval = User(name="yuval", age=42)
stash.save(yuval, "foo")
assert stash.exists("foo")
assert not stash.exists("goo")
assert stash.list_keys() == ["foo"]
obj = stash.load("foo")
assert obj == yuval
goo = User(name="goo", age=10)
stash.save(goo, "goo")
assert stash.list_keys() == ["foo", "goo"]
stash.delete("foo")
assert stash.list_keys() == ["goo"]
with pytest.raises(Exception):
stash.delete("foo")
stash.drop()
assert stash.list_keys() == []
def test_key_field():
@dataclass
class Rat:
key: ClassVar[str] = "foo"
with pytest.raises(Exception):
YmlStash(Rat, ".")
@dataclass
class Dog:
name: str
key: ClassVar[str] = "name"
stash = YmlStash(Dog, TEST_STASH_PATH)
terra = Dog(name="terra")
stash.save(terra)
assert stash.list_keys() == ["terra"]
terra = Dog(name="terra")
stash.save(terra, key="dupe") # override key
assert stash.list_keys() == ["terra", "dupe"]
stash.drop()
def test_dump_order():
@dataclass
class Order:
o: int
r: int
d: int
e: int
a: int
z: int
key: ClassVar[str] = "o"
stash = YmlStash(Order, TEST_STASH_PATH)
order = Order(1, 2, 3, 4, 5, 6)
stash.save(order)
with open(TEST_STASH_PATH / "1.yml", "r") as f:
lines = f.readlines()
keys = "".join([line[0] for line in lines])
assert keys == "ordeaz"
stash.drop()
def test_null_values():
@dataclass
class Nullable:
name: str
nullval: Optional[str] = None
key: ClassVar[str] = "name"
stash = YmlStash(Nullable, TEST_STASH_PATH, filter_none=True)
goo = Nullable("goo")
stash.save(goo)
with open(TEST_STASH_PATH / "goo.yml", "r") as f:
lines = f.readlines()
for line in lines:
assert "nullval" not in line
stash.drop()
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