jml

import XCTest

class HelloTests : XCTestCase {
    func testSimple() throws {
        XCTAssertEqual(2, 1 + 1)
    }
}

jml

package main

import (
	"encoding/json"
	"testing"
	"time"

	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

jml

$ brew install emacs-mac --with-emacs-icons-project-EmacsIcon9 --with-gnutls
Checking out v1.0.1 in /usr/local/Homebrew...
To checkout master in /usr/local/Homebrew run:
  'cd /usr/local/Homebrew && git checkout master
==> Auto-updated Homebrew!
Updated 1 tap (homebrew/core).
No changes to formulae.

==> Installing emacs-mac from railwaycat/emacsmacport
==> Downloading https://bitbucket.org/mituharu/emacs-mac/get/emacs-25.1-mac-6.0.

jml

Stephen Diehl's protolude library is excellent. I highly recommend it as a default prelude for Haskell.

It's so good and so close to what I want that whenever I do come across something missing it's as obvious as a glitch in good music.

Here's what I'd like:

<<$>>

(<<$>>) :: (Functor f, Functor g) => (a -> b) -> f (g a) -> f (g b)

jml

GTD: tl;dr

Assumptions

• A system must be reliable to be useful

  • Must have all of the things you care about

jml

def waitFor(clock, delay, deferred):
    """
    Usage::

        waitFor(reactor, 20, d).addCallback(print)

    Will wait for 20s before calling ``print`` with the result of ``d``.
    """
    # H/T @tomprince
    return deferred.addCallback(lambda x: deferLater(clock, delay, lambda: x))

jml

Some notes on a different approach to xUnit style tests. I don't necessarily want to implement it—I don't quite have the motive or opportunity—but I think it interesting enough to share.

Instead of telling users to subclass testtools.TestCase, we would tell them to decorate. Tests would look like:

@test_cases()
class MyTests(object):
    def setUp(self):
        # no upcall
        whatever()
    def test_foo(self):

jml

from twisted.trial.unittest import SynchronousTestCase
from twisted.internet.defer import gatherResults, maybeDeferred


class MyTests(SynchronousTestCase):

    def test_catches_failure(self):
        d = maybeDeferred(lambda: 1/0)
        self.failureResultOf(d)

jml

parts s = do
    a <- [1..s-1]
    b <- [1..s-a]
    c <- [1..s-a-b]
    d <- [1..s-a-b-c]
    return [a, b, c, d]

jml

$ ssh ubuntu@52.18.74.86
The authenticity of host '52.18.74.86 (52.18.74.86)' can't be established.
RSA key fingerprint is 69:05:36:51:18:6a:ca:89:65:62:d4:a0:33:b5:6f:db.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '52.18.74.86' (RSA) to the list of known hosts.
Welcome to Ubuntu 14.04.2 LTS (GNU/Linux 3.13.0-48-generic x86_64)

 * Documentation:  https://help.ubuntu.com/

  System information as of Mon Jan 18 13:47:09 UTC 2016