verify 0.0.1

Links

• Project: https://github.com/dgilland/verify

• Documentation: http://verify.readthedocs.org

• PyPi: https://pypi.python.org/pypi/verify/

• TravisCI: https://travis-ci.org/dgilland/verify

Quickstart

Install using pip:

pip install verify

Verify some value using verify’s assertions:

import verify
from verify import Expect, Not

Expect(5 * 5,
       verify.Truthy(),
       Not(verify.Falsy),
       verify.Greater(15),
       verify.Less(30))

Expect(lambda: 5 * 5,
       verify.GreaterEqual(15),
       verify.Less(30))

Verify using your own functions:

def is_just_right(value):
    assert 20 <= value <= 30, "it's just not right"

# Passes
Expect(25, is_just_right)

# Fails
try:
    Expect(31, is_just_right)
except AssertionError:
    raise

Under the hood the value that’s passed to Expect will be piped through all of the assertion callables that are passed to it.

You can also use the verify assertions on their own:

# These will pass.
verify.Truthy(1)
verify.Equal(2, 2)
verify.Greater(3, 2)

# These will fail with an AssertionError
verify.Truthy(0)
verify.Equal(2, 3)
verify.Greater(2, 3)

Validators

All of the validators in verify are callables that can be used in two contexts:

1. By themselves as in Equal(a, b) which will raise an AssertionError if false.

2. In combination with Except as in Expect(a, Equal(b)).

The available validators are:

For more details, please see the full documentation at http://verify.readthedocs.org.