Jestspectation
Pattern matching tools to test complex data structures.
The design is inspired by the expect system from JavaScript's Jest testing
framework.
>>> import jestspectation as expect
>>> assert {
... "a": 1,
... "b": 2,
... "c": 3.0,
... } == {
... "a": 1,
... "b": expect.Any(int),
... "c": expect.FloatApprox(2.5, magnitude=0.5)
... }
Documentation
Documentation can be found on GitHub Pages.
Installation
pip install jestspectation
Usage with Pytest
The library can be used as a pytest plugin, which can give access to much more detailed error messages when assertions fail.
This should result in output similar to the following
def test_goodbye():
> assert 1 == expect.Any(float)
E assert Type mismatch
E Expected any object of type float
E Received 1 (int)
These advanced completions can also be used for most standard Python objects
by wrapping the expected values in an Equals. For example:
def test_lists():
> assert expect.Equals([1, 2, 3, 4]) == [1, 2, 3, 5, 6]
E assert [1, 2, 3, 4] == [1, 2, 3, 5, 6]
E !! [3] 4 == 5
E Value mismatch
E Expected 4
E Received 5
E ++ [4] 6
To automatically use Jestspectation's diff parsing, you can configure Jestspectation.
>>> import jestspectation
>>> jestspectation.configure().pytest_all_diffs = True
1 maintainer
Release files for Jestspectation 1.4.5
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| jestspectation-1.4.5.tar.gz | 14.2 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| jestspectation-1.4.5-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 37.4 kB
Release files / jestspectation-1.4.5.tar.gz
| Download URL | jestspectation-1.4.5.tar.gz |
|---|---|
| Size | 14.2 kB |
| Tags | Source |
|
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Release files / jestspectation-1.4.5-py3-none-any.whl
| Download URL | jestspectation-1.4.5-py3-none-any.whl |
|---|---|
| Size | 23.2 kB |
| Tags | Python 3 |
|
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