Here's how to read the logs for a kubernetes (k8s) pod.Orient your readFirst, we want to orient to where we're reading from. We'll need to know context and application name. A k8s "context" is a set of access parameters, including k8s cluster, user and namespace. The "application name" is a common l...

To run an async test in pytest, it must be marked. It can be a pain to mark them all individually. Here's how to mark them all async at once.Asynchronous testsYou'd need an asynchronous test for asynchronous code under test. For instance, Quart is an app server where all the endpoints are asynchrono...

This is what it takes to pass params to pytest fixtures.Just Use FunctionsInstead of using pytest fixtures, the easier method would be to just create a function that sets up and tears down what you need. Like this:def test_something(): my_fixture = setup_something('special sauce') # assertion... tea...

How to add a cookie to a curl request.First, find your cookie. Perhaps you're making a test request to an API that your web app uses. You could fire up the web app, authenticate, open devtools and see the cookie in the request headers. Copy it. Keep it secret. Keep it safe.Then back to the terminal ...

Here's how to use the aws cli to get a value for a secret out of secrets manager.Using the aws cli can be so much more convenient than clicking through AWS web UIs to find what you want. An example of this is in the retrieval of secret values.List All SecretsIf you need to see what secrets are in se...

pytest(https://pytest.orig) makes it easy to assert that an exception is raised and that it's the one you expect.PrerequisitesOnce we setup pytest, we get a nice assertion utility to verify that exceptions are raised.For instance, in module my_module.py with code:def my_fn(): raise Exception('Kaboom...

Here's how to set up clojure testing environment.Let's start a new project directory and create a src directory:mkdir srcLet's create the source file with src/calc.clj. There's a simple namespace declaration and function that adds 2 numbers.(ns calc) (def add [a b] (+ a b))Now let's test that add fu...

This is how you can watch for changes to your source file and re-run the test on change with pytest.Pytest needs a plugin to be able to watch for file changes. Install the simplest pytest setup, including installing this plugin, pytest-watch.Then you can use the ptw command in place of pytest.Use th...

How to run just one test with pytest.After you make your first test, you'll make hundreds more. But to run them all takes a lot of time. So if you're working in one corner of the code, just run the tests that you care about.Run a single fileTo run a single test file, such as pie_test.py, run:pytest ...

Here's a quick, straightforward way to install Clojure on Linux or MacOS.Install JavaFirst, you need the JDK. You can get that in a lot of ways. It's nice to have a utility to help you manager versions of the Java JDK. asdf is such a version manager -- and currently, the best.Now with asdf, you can ...

Fewer mocks are usually a better indication of a higher-value test.What is a mock?In testing, a mock is code that is faked out so that the test can control it precisely. The tester will write into the test what a certain piece of code should do. Its behavior is predetermined as a placeholder. When t...

Here's a recommendation on how to format the error response frorm a Twilio Function.tl;drAlways format the error response yourself as the second argument to callback.The docsThe Twilio docs give a grand total of this advice on the subject of error responses:If you have encountered an exception in yo...

These are some of my dreams for a great design system.The best design system would be the one that was already made, cost nothing additional, and fit my needs perfectly. But in the case of a company making a custom design system that meets their specific needs, here are some value targets that I thi...

Here's a method to test a distributed lock via a dynamodb table in pytest.Why a distributed lockIf you can avoid locking, do it. It's probably hard to get right. The lock in this example is rudimentary.If you have a shared resource where control of it is important to its processing, you might want a...

Here's a method to download photos from your iPhone on Arch Linux. An unholy combination? Yeah, probably.tl;drsudo pacman -S libimobiledevice # needed protocols to connect yay -S ifuse # needed to mount systemctl start usbmuxd.service # ensure service running idevicepair pair # pair phone mkdir /mnt...

Live in i3, live in the terminal. No GUI for changing display properties. So, here's a CLI command to set a new screen resolution.tl;drIn xrandr lingo, a "mode" is approximately a "resolution" and an "output" is a "monitor".xrandr # list available outputs and modes cvt 3840 2160 60 # calculate mode ...

Avoid the problem of Webpack not importing CSS stylesheets.Missing stylesWebpack bundles your app, but sometimes it leaves something out. Is there a warranty on this thing? Can I get my npm bucks back? What is going on here?Simple enough: A .js file imports a .css file:import './mystyles.css'But the...

Here's a set of setups to get your files restored and downloaded from AWS S3 Glacier.First, which Glacier?Amazon has a couple glaciers. One's called AWS Glacier. You store things there in Vaults. It's legacy, and you shouldn't use it. The other Glacier is in S3. This one's newer and has a unified AP...

These are essential milestones in configuring a new system to boot from legacy MBR. These are often done as a part of a new OS install.Boot ModesThere are different boot modes. These days, the modern option is GPT. But on old hardware, you might want or be stuck with MBR, Master Boot Record.Partitio...

Maintain our own scroll position with JavaScript.Browser handledIt turns out, we might not need to do anything manually. This is because the browser does this for us most of the time.If the browser is handling this automatically but we'd like to do something special instead, we can turn it off:windo...

This is the most basic project layout for running pytest, a desirable test runner for your python code.PrerequisitesFirst, get python3 installed. Then a virtual environment, like pipenv.Get dependenciesThen use pipenv to get your pytest dependencies.cd my_project pipenv shell pipenv install pytest p...

Repeating styles are made terse and simple using :nth-child.ScenarioLet's say I have a list of .box components and want to repeat the primary colors -- red, yellow and blue -- over and over for the length of the box list.First, create as many boxes as you'd like: 1 2 3 4 And style them as you'd like...

Here's a method for getting that new foreign key column to be non-nullable and without a default.Django migrations are awesomeDjango has a solid ORM and some nice database migrations to go with it. First, make a change to your model in python code, then run:python manage.py makemigrationsThe the mig...

We are different than the Tech Giants. We can and should develop software differently from them. Generally, we have simpler needs.A Part of the Tech Giant DiscussionLately, there is a wider discussion in the public sphere about some of the ills that come from the emergences of very large tech giants...

This is how we can allow keyboard users to horizontally scroll code blocks.The Need to ScrollWhy would a code block need to be accessible by keyboard? It's just text after all. Yes, most of the time there's no additional keyboard accessibility required by text. Most visual designs preclude this. But...

Here's how you can change the default rendering of code blocks using marksy.An MDX AlternativeMDX is a popular superset of Markdown that allows rendering custom components from within the usual markdown formatting. Marksy is a competing library. It does the same thing, and at least in my experience ...

When is a @font-face-declared font file downloaded? When it's needed.Font-face Declarations@font-face declarations are one way of listing which fonts are available to a web page. Importantly, they point to a font file (.otf, .woff2, etc). This is commonly done by a url.@font-face { src: url(https://...

When will Microsoft Drop IE? In 2025. Enjoy the countdown.They have done many things to diminish support for it previous to that, including dropping it from their major web properties, such as Microsoft Teams and M365. But it won't fully go away until long after now.The reason this is the case is co...

If we're not careful, the number of priorities will grow directly with the number of managers. Since a singular priority is the most useful kind of priority, this is a bad thing.Growing managers, growing prioritiesIt might not be universal, I can't say. But it sure is observable and repeatable. If y...

The curse of knowledge may create obstacles to us writing something useful for our reader. We may assume that others know exactly what we know and that they still need to learn certain things. This might be mismatched with their real needs.Knowing where to startIn technical writing, we try to guide ...