# pytest-lazy-fixtures
[](https://codecov.io/gh/dev-petrov/pytest-lazy-fixtures)
[](https://github.com/dev-petrov/pytest-lazy-fixtures/actions/workflows/ci-test.yml)
[](https://pypi.org/project/pytest-lazy-fixtures/)
[](https://pypistats.org/packages/pytest-lazy-fixtures)
Use your fixtures in `@pytest.mark.parametrize`.
This project was inspired by [pytest-lazy-fixture](https://github.com/TvoroG/pytest-lazy-fixture).
Improvements that have been made in this project:
1. You can use fixtures in any data structures
2. You can access the attributes of fixtures
3. You can use functions in fixtures
## Installation
```shell
pip install pytest-lazy-fixtures
```
## Usage
To use your fixtures inside `@pytest.mark.parametrize` you can use `lf` (`lazy_fixture`).
```python
import pytest
from pytest_lazy_fixtures import lf
@pytest.fixture()
def one():
return 1
@pytest.mark.parametrize('arg1,arg2', [('val1', lf('one'))])
def test_func(arg1, arg2):
assert arg2 == 1
```
`lf` can be used with any data structures. For example, in the following example, `lf` is used in the dictionary:
```python
import pytest
from pytest_lazy_fixtures import lf
@pytest.fixture()
def one():
return 1
@pytest.mark.parametrize('arg1,arg2', [('val1', {"value": lf('one')})])
def test_func(arg1, arg2):
assert arg2 == {"value": 1}
```
You can also specify getting an attribute through a dot:
```python
import pytest
from pytest_lazy_fixtures import lf
class Entity:
def __init__(self, value):
self.value = value
@pytest.fixture()
def one():
return Entity(1)
@pytest.mark.parametrize('arg1,arg2', [('val1', lf('one.value'))])
def test_func(arg1, arg2):
assert arg2 == 1
```
And there is some useful wrapper called `lfc` (`lazy_fixture_callable`).
It can work with any callable and your fixtures, e.g.
```python
import pytest
from pytest_lazy_fixtures import lf, lfc
class Entity:
def __init__(self, value):
self.value = value
def __str__(self) -> str:
return str(self.value)
def sum(self, value: int) -> int:
return self.value + value
@pytest.fixture()
def entity():
return Entity(1)
@pytest.fixture()
def two():
return 2
@pytest.fixture()
def three():
return 3
@pytest.fixture()
def entity_format():
def _entity_format(entity: Entity):
return {"value": entity.value}
return _entity_format
@pytest.mark.parametrize(
"message",
[
lfc(
"There is two lazy fixture args, {} and {}! And one kwarg {field}! And also simple value {simple}".format,
lf("entity"),
lf("two"),
field=lf("three"),
simple="value",
),
],
)
def test_lazy_fixture_callable_with_func(message):
assert message == "There is two lazy fixture args, 1 and 2! And one kwarg 3! And also simple value value"
@pytest.mark.parametrize("formatted", [lfc("entity_format", lf("entity"))])
def test_lazy_fixture_callable_with_lf(formatted, entity):
assert formatted == {"value": entity.value}
@pytest.mark.parametrize("result", [lfc("entity.sum", lf("two"))])
def test_lazy_fixture_callable_with_attr_lf(result):
assert result == 3
```
## Contributing
Contributions are very welcome. Tests can be run with `pytest`.
## License
Distributed under the terms of the `MIT` license, `pytest-lazy-fixtures` is free and open source software
## Issues
If you encounter any problems, please file an issue along with a detailed description.
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"description": "# pytest-lazy-fixtures\n\n[](https://codecov.io/gh/dev-petrov/pytest-lazy-fixtures)\n[](https://github.com/dev-petrov/pytest-lazy-fixtures/actions/workflows/ci-test.yml)\n[](https://pypi.org/project/pytest-lazy-fixtures/)\n[](https://pypistats.org/packages/pytest-lazy-fixtures)\n\nUse your fixtures in `@pytest.mark.parametrize`.\n\nThis project was inspired by [pytest-lazy-fixture](https://github.com/TvoroG/pytest-lazy-fixture).\n\nImprovements that have been made in this project:\n\n1. You can use fixtures in any data structures\n2. You can access the attributes of fixtures\n3. You can use functions in fixtures\n\n## Installation\n\n```shell\npip install pytest-lazy-fixtures\n```\n\n## Usage\n\nTo use your fixtures inside `@pytest.mark.parametrize` you can use `lf` (`lazy_fixture`).\n\n```python\nimport pytest\nfrom pytest_lazy_fixtures import lf\n\n@pytest.fixture()\ndef one():\n return 1\n\n@pytest.mark.parametrize('arg1,arg2', [('val1', lf('one'))])\ndef test_func(arg1, arg2):\n assert arg2 == 1\n```\n\n`lf` can be used with any data structures. For example, in the following example, `lf` is used in the dictionary:\n\n```python\nimport pytest\nfrom pytest_lazy_fixtures import lf\n\n@pytest.fixture()\ndef one():\n return 1\n\n@pytest.mark.parametrize('arg1,arg2', [('val1', {\"value\": lf('one')})])\ndef test_func(arg1, arg2):\n assert arg2 == {\"value\": 1}\n```\n\nYou can also specify getting an attribute through a dot:\n\n```python\nimport pytest\nfrom pytest_lazy_fixtures import lf\n\nclass Entity:\n def __init__(self, value):\n self.value = value\n\n@pytest.fixture()\ndef one():\n return Entity(1)\n\n@pytest.mark.parametrize('arg1,arg2', [('val1', lf('one.value'))])\ndef test_func(arg1, arg2):\n assert arg2 == 1\n```\n\nAnd there is some useful wrapper called `lfc` (`lazy_fixture_callable`).\nIt can work with any callable and your fixtures, e.g.\n\n```python\nimport pytest\nfrom pytest_lazy_fixtures import lf, lfc\n\nclass Entity:\n def __init__(self, value):\n self.value = value\n\n def __str__(self) -> str:\n return str(self.value)\n\n def sum(self, value: int) -> int:\n return self.value + value\n\n@pytest.fixture()\ndef entity():\n return Entity(1)\n\n@pytest.fixture()\ndef two():\n return 2\n\n@pytest.fixture()\ndef three():\n return 3\n\n@pytest.fixture()\ndef entity_format():\n def _entity_format(entity: Entity):\n return {\"value\": entity.value}\n\n return _entity_format\n\n@pytest.mark.parametrize(\n \"message\",\n [\n lfc(\n \"There is two lazy fixture args, {} and {}! And one kwarg {field}! And also simple value {simple}\".format,\n lf(\"entity\"),\n lf(\"two\"),\n field=lf(\"three\"),\n simple=\"value\",\n ),\n ],\n)\ndef test_lazy_fixture_callable_with_func(message):\n assert message == \"There is two lazy fixture args, 1 and 2! And one kwarg 3! And also simple value value\"\n\n\n@pytest.mark.parametrize(\"formatted\", [lfc(\"entity_format\", lf(\"entity\"))])\ndef test_lazy_fixture_callable_with_lf(formatted, entity):\n assert formatted == {\"value\": entity.value}\n\n\n@pytest.mark.parametrize(\"result\", [lfc(\"entity.sum\", lf(\"two\"))])\ndef test_lazy_fixture_callable_with_attr_lf(result):\n assert result == 3\n```\n\n## Contributing\n\nContributions are very welcome. Tests can be run with `pytest`.\n\n## License\n\nDistributed under the terms of the `MIT` license, `pytest-lazy-fixtures` is free and open source software\n\n## Issues\n\nIf you encounter any problems, please file an issue along with a detailed description.\n",
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