Metadata-Version: 2.1
Name: ward
Version: 0.8.0a0
Summary: A Python 3 test framework.
Home-page: http://github.com/darrenburns/ward
Author: Darren Burns
Author-email: darrenb900@gmail.com
License: MIT
Description: # Ward
        
        ![](https://github.com/darrenburns/ward/workflows/Ward%20CI/badge.svg)
        
        An experimental test runner for Python 3.6+ that is heavily inspired by `pytest`. This project is a work in progress, and is not production ready.
        
        ![screenshot](https://raw.githubusercontent.com/darrenburns/ward/master/screenshot.png)
        
        ## Features
        
        This project is a work in progress. Some of the features that are currently available in a basic form are listed below.
        
        * Modular setup/teardown with fixtures and dependency injection
        * Highly readable, colourful diffs intended to be as readable as possible
        * A human readable assertion API
        * Tested on Mac OS, Linux, and Windows
        * stderr/stdout captured during test and fixture execution
        
        Planned features:
        
        * Smart test execution order designed to surface failures faster (using various heuristics)
        * Multi-process mode to improve performance
        * Highly configurable output modes
        * Code coverage with `--coverage` flag
        * Handling flaky tests with test-specific retries, timeouts
        * Integration with unittest.mock (specifics to be ironed out)
        * Plugin system
        * Highlighting diffs on a per-character basis, similar to [diff-so-fancy](https://github.com/so-fancy/diff-so-fancy) (right now it's just per line)
        
        ## Quick Start
        
        
        Installation: `pip install ward`
        
        Look for tests recursively and run them: `ward`
        
        ## Examples
        
        ### Dependency injection with fixtures
        
        In the example below, we define a single fixture named `cities`.
        Our test takes a single parameter, which is also named `cities`.
        Ward sees that the fixture name and parameter names match, so it
        calls the `cities` fixture, and passes the result into the test.
        
        ```python
        from ward import expect, fixture
        
        @fixture
        def cities():
            return ["Glasgow", "Edinburgh"]
            
        def test_using_cities(cities):
            expect(cities).equals(["Glasgow", "Edinburgh"])
        ```
        
        Fixtures are great for extracting common setup code that you'd otherwise need to repeat at the top of your tests, 
        but they can also execute teardown code:
        
        ```python
        @fixture
        def database():
            db_conn = setup_database()
            yield db_conn
            db_conn.close()
        
        
        def test_database_connection(database):
            # The database connection can be used in this test,
            # and will be closed after the test has completed.
            users = get_all_users(database)
            expect(users).contains("Bob")
        ```
        
        ### The Expect API
        
        In the (contrived) `test_capital_cities` test, we want to determine whether
        the `get_capitals_from_server` function is behaving as expected, 
        so we grab the output of the function and pass it to `expect`. From
        here, we check that the response is as we expect it to be by chaining
        methods. If any of the checks fail, the expect chain short-circuits,
        and the remaining checks won't be executed for that test. Methods in
        the Expect API are named such that they correspond as closely to standard
        Python operators as possible, meaning there's not much to memorise.
        
        ```python
        from ward import expect, fixture
        
        @fixture
        def cities():
            return {"edinburgh": "scotland", "tokyo": "japan", "madrid": "spain"}
        
        def test_capital_cities(cities):
            found_cities = get_capitals_from_server()
        
            (expect(found_cities)
             .contains("tokyo")                                 # it contains the key 'tokyo'
             .satisfies(lambda x: all(len(k) < 10 for k in x))  # all keys < 10 chars
             .equals(cities))
        ```
        
        ### Checking for exceptions
        
        The test below will pass, because a `ZeroDivisionError` is raised. If a `ZeroDivisionError` wasn't raised,
        the test would fail.
        
        ```python
        from ward import raises
        
        def test_expecting_an_exception():
            with raises(ZeroDivisionError):
                1/0
        ```
        
        ### Running tests in a directory
        
        You can run tests in a specific directory using the `--path` option.
        For example, to run all tests inside a directory called `tests`:
        
        ```text
        ward --path tests
        ```
        
        To run tests in the current directory, you can just type `ward`, which
        is functionally equivalent to `ward --path .`
        
        
        ### Filtering tests by name
        
        You can choose to limit which tests are collected and ran by Ward 
        using the `--filter` option. Test names which contain the argument value 
        as a substring will be run, and everything else will be ignored.
        
        To run a test called `test_the_sky_is_blue`:
        
        ```text
        ward --filter test_the_sky_is_blue
        ```
        
        The match takes place on the fully qualified name, so you can run a single
        module (e.g. `my_module`) using the following command:
        
        ```text
        ward --filter my_module.
        ```
        
        ### Skipping a test
        
        Use the `@skip` annotation to tell Ward not to execute a test.
        
        ```python
        from ward import skip
        
        @skip
        def test_to_be_skipped():
            pass
        ```
        
        ### Testing for approximate equality
        
        Check that a value is close to another value.
        
        ```python
        expect(1.0).approx(1.01, epsilon=0.2)  # pass
        expect(1.0).approx(1.01, epsilon=0.001)  # fail
        ```
        
        ### Cancelling a run after a specific number of failures
        
        If you wish for Ward to cancel a run immediately after a specific number of failing tests,
        you can use the `--fail-limit` option. To have a run end immediately after 5 tests fail:
        
        ```text
        ward --fail-limit=5
        ```
        
Platform: UNKNOWN
Requires-Python: >=3.6
Description-Content-Type: text/markdown
