What is the difference between iterative and incremental models?
Fortunately I have written an entire post on this exact topic here.
My conclusion was:
We can’t build anything without iterating to some degree: no code is written perfectly the second that it is typed or committed. Even if it looks like a company is incrementally building their software: they’re iteratively building it inside.
We can’t release anything without incrementing to some degree: no matter how small a release is, it’s still an incremental change over the last release. Some increments are bigger because they’ve already been internally iterated upon more, some are smaller as they’re less developed and will evolve over time.
So, we develop software iteratively and release incrementally in various sizes over time.
Data Migration testing from one application to another application. Which way to test best and easy? The new application should be in Salesforce.
This is quite a generic question but I’ll try to answer it the best I can. I usually look at data migrations as three separate steps:
Extract data from the old system
Transform the data to fit the new system
Load the data into the new system
I would test that each step has worked correctly by verifying the data starting in the deepest parts of the system (database tables), moving up into APIs and finally into any user interfaces. I know some CRMs such as Salesforce don’t allow access to database tables so sometimes you can only use APIs or user interfaces to ‘spot check’ data.
I hope this helps you Nathan.
I’ve never personally found the return on investment of getting automated tests running across Internet Explorer and Safari to be worthwhile as in my experience this took more effort than the bugs it found. So I personally stick to running our full e2e test suite in our most used browser (Chrome) and supplementing this with exploratory testing on all other browsers.
In saying that the reason you won’t be able to use Docker containers for these purposes is that they’re Linux and Internet Explorer requires Microsoft Windows and Safari requires Apple macOS to be able to run. To be able to use these for your existing automated tests you can sign up to a on-demand browser service like SauceLabs and use the remote WebDriver protocol to execute your tests.
I wondered if you could tell me what sets exceptional QA testers apart? Not just personality or work ethic traits, but specific skills and programming knowledge that will be very valuable to a team?
I think exceptional QA testers, as explained recently, aren’t people who are exceptional at just one thing, eg. testing, but good at lots of things.
So an exceptional QA tester, in my opinion, will typically have (at least good) skills in the following things:
- Skills in human exploratory testing: an exceptional QA tester has the ability to effectively find the most important bugs fast. Whilst this skill can be developed, I have found it’s mostly a mindset.
- Skills in developing automated tests: an exceptional QA tester will have programming skills needed to develop automated tests and I would recommend these to typically match the programming language(s) that programmers in your organization use. For example, skills in automated testing in .NET if your company primarily uses Microsoft .NET. Although, someone with strong programming skills in one language (eg. ruby) should be able to transfer these skills to another language (eg. python).
- Knowledge/Experience in your business domain: an exceptional QA tester will fully understand your business domain and keep this context in mind whilst testing a product and raising issues. An exceptional tester is always testing your system – just as I am testing WordPress.com publishing this post.
- An empathetic mindset: we design and develop software for real people and real life. An exceptional QA tester will test with this in mind.
iOS11 is out and it supports native in-device screen recording! I’m a huge fan of attaching screen recordings to bug reports (they capture flow!), whether that be animated gifs or videos, and until now to do this on iOS required plugging your iDevice into your Mac via USB and using QuickTime to record the screen. Alas no longer, it’s now easy to do so via control centre!
Here’s a screen recording (no audio), recorded on my iPhone no less, that shows you how 😊
Protip: force touch the screen recording button to enable/disable microphone for narration
Protip #2: use the in built video editor to trim the start and end
Do you have set up (inexpensive) infrastructure to store data collected in your automated tests? We are currently using using selenium Java webdriver to automate our tests and IntelliJ as our IDE. We create data from scratch for each and every test case :(
I’m a little confused by the question and whether it’s about test data: data is that is needed by the automated tests, or test results data: insights into the results of our automated tests. So I’ll answer both 😀
Infrastructure to manage test data
Our tests run on specific test accounts and sites on production databases. Since our tests are end-to-end in fashion, we try to make our tests have as few dependencies as possible on existing data. Often an end-to-end scenario will involve creating, viewing, editing and deleting something. If we don’t do all of this by our UI we can use hooks that either use services or database jobs to clean up the data. I explained this in more detail previously.
Infrastructure to manage test results data
We use CircleCI for automated end-to-end tests. We have a number of projects that run different types of end-to-end tests from the same code repository for different purposes (canary tests, visual-diff tests, full regression tests for example).
We generate x-unit test results (from Mocha/Magellan) which CircleCI uses to provide insights into our test results such as this:
You can also drill down into slowest tests and most failed tests etc.
Since all our tests are open source you can view these build insights yourself!
We’re pretty happy with the insights we get from CircleCI at the moment so we don’t see a need to currently develop anything ourself.
I’ve been working with angular a while now but I have to admit, the testing side throws me. Every time I start to tackle it, I find myself distracted from the test I want to write by all of the things I need to mock. Sometimes it feels like I need to build an entire mock framework to test one feature. Maybe I’m doing it wrong. Any tips appreciated, whether practical or even just the right headspace for approaching it :)
I haven’t worked with angular applications directly but I’ve worked on React applications and I’m guessing the approach to unit testing these will be similar.
I would start as simple as possible with the smallest test that would possibly work. If you find that you need an entire mock framework to test a feature it sounds like your components may need to be broken down further into smaller components as you have too many dependencies that need to be mocked. If you have smaller components that only require a single dependency then these components should be easier to test as the dependencies will be easier to mock.
If retrofitting unit tests into your app is still too difficult you could try to automated some key end-to-end scenarios using Protractor, but I’d discourage you from going overboard since these can quickly get out of hand. You may still benefit from having a few of these tests even if you get unit testing of small components working well to ensure the small components work well together.
I hope this helps you Ben 😊