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https://github.com/pilagod/nextmock
NextMock is an enhanced mock for unittest.mock.Mock
https://github.com/pilagod/nextmock
async mock python stub unit-testing
Last synced: 24 days ago
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NextMock is an enhanced mock for unittest.mock.Mock
- Host: GitHub
- URL: https://github.com/pilagod/nextmock
- Owner: pilagod
- License: mit
- Created: 2020-12-30T09:11:03.000Z (almost 4 years ago)
- Default Branch: master
- Last Pushed: 2021-04-17T07:26:24.000Z (over 3 years ago)
- Last Synced: 2024-11-02T03:07:03.295Z (about 1 month ago)
- Topics: async, mock, python, stub, unit-testing
- Language: Python
- Homepage: https://pypi.org/project/nextmock/
- Size: 25.4 KB
- Stars: 17
- Watchers: 3
- Forks: 1
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# NextMock [](https://travis-ci.com/pilagod/nextmock) [](https://coveralls.io/github/pilagod/nextmock?branch=master)
NextMock is an enhanced mock for [unittest.mock.Mock](https://docs.python.org/3/library/unittest.mock.html#unittest.mock.Mock).
## Features
- Argument matching supported.
- Async version (AsyncMock) provided.
- Compatible with [unittest.mock.Mock](https://docs.python.org/3/library/unittest.mock.html#unittest.mock.Mock).
## Usage
First install `nextmock` from pip:
```shell
$ pip install nextmock
```
then import Mock for common usage, AsyncMock for async usage:
```python
from nextmock import Mock
from nextmock import AsyncMock
```
## API with Examples
### with_args
Return/raise stub result/error only when given args are matched.
> Check out [`/nextmock/test/test_mock_with_args.py`](https://github.com/pilagod/nextmock/blob/master/nextmock/test/test_mock_with_args.py) for comprehensive exmaples.
- args matching
```python
m = Mock()
m.with_args(1, 2, 3).returns(123)
assert m(1, 2, 3) == 123
assert m(3, 2, 1) != 123
```
- kwargs matching
```python
m = Mock()
m.with_args(a=1, b=2, c=3).returns(123)
assert m(a=1, b=2, c=3) == 123
assert m(a=3, b=2, c=1) != 123
```
- class matching
```python
class Cmd:
def __init__(self, a: int, b: str):
self.a = a
self.b = b
m = Mock()
m.with_args(Cmd(1, "123")).returns(123)
assert m(Cmd(1, "123")) == 123
assert m(Cmd(999, "321")) != 123
```
- args matcher
```python
from nextmock import Arg
m = Mock()
m.with_args(1, 2, Arg.Any).returns(123)
assert m(1, 2, 1) == 123
assert m(1, 2, 9) == 123
assert m(1, 2, "123") == 123
```
- error raising
```python
m = Mock()
m.with_args(1, 2, 3).raises(ValueError("value error"))
with pytest.raises(ValueError) as e:
m(1, 2, 3)
assert str(e.value) == "value error"
```
- enum matching (0.0.1)
```python
class Category(Enum):
A = "a"
B = "b"
m = Mock()
m.with_args(Category.A).returns(123)
assert m(Category.A) == 123
assert m(Category.B) != 123
```
### returns
Return stub result without matching args.
```python
m = Mock()
m.returns(123)
assert m(1, 2, 3) == 123
assert m(a=1, b=2, c=3) == 123
```
### raises
Raise stub error without matching args.
```python
m = Mock()
m.raises(ValueError("value error"))
with pytest.raises(ValueError) as e:
m(1, 2, 3)
with pytest.raises(ValueError) as e:
m(a=1, b=2, c=3)
```
## Compatibility
Inherit behavior from [unittest.mock.Mock](https://docs.python.org/3/library/unittest.mock.html#unittest.mock.Mock).
> Check out [`/nextmock/test/test_mock_compatibility.py`](https://github.com/pilagod/nextmock/blob/master/nextmock/test/test_mock_compatibility.py) for comprehensive examples.
```python
m = Mock()
m.return_value = 123
assert m(1, 2, 3) == 123
m.assert_called_once()
m.assert_called_with(1, 2, 3)
```
## License
© Chun-Yan Ho (pilagod), 2020-NOW
Released under the [MIT License](https://github.com/pilagod/nextmock/blob/master/LICENSE)