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To my mind, most of the issue comes from people confusing units with classes.
Unit tests should work at the level of a public interface of a module, and ensure that the expected behaviour occurs given given inputs. They should be (very) cheap to run, and fake the dependencies of the module.
Integration tests are still incredibly important, but are run less often, as they take longer - for example having to actually talk to a DB rather than fake it in some way.
Testing at too fine a grain results in horribly fragile test suites. Test behaviour, not how the behaviour is implemented. TDD is particularly effective when approached in this manor.
Of course, all this is just based on my personal experience, on the types of projects I've worked on. Your mileage may vary.
"If you don't fail at least 90 percent of the time, you're not aiming high enough."
Alan Kay.
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The internet will become totally balkanised unless countries put aside differences and continue to develop standards and technology together "Let us go down, and there confound their language, that they may not understand one another's speech."
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Kent Sharkey wrote: "Let us go down, and there confound their language create another Javascript library, that they may not understand one another's speech."
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Kent Sharkey wrote: countries put aside differences and continue to develop standards and technology together
The science fiction section is in the second floor, third corridor on the left.
M.D.V. 
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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There already is a standard. Not a pretty one, but it works. Even in the Lynx browser (and CP does too!).
Bastard Programmer from Hell 
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Kent Sharkey wrote: Let us go down, and there confound their language, that they may not understand one another's speech
Genesis 11:7
Not often (if ever before) I've seen you quote the bible!
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I try to avoid it as it might offend some I think I've done it less than a handful of times. Just sometimes it seems the most appropriate.
TTFN - Kent
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I am often asked what I mean when I say that developers spend most of their time figuring the system out. Let’s unpack the statement. Figuring it out? That's wishful thinking.
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And the rest of the time we are trying to figure out what the ![Elephant | [mastadon]](https://codeproject.freetls.fastly.net/script/Forums/Images/elephant.gif) do the test specs or the requirements list mean or want to say.
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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42 years later and that chart is still accurate. 
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Windows Package Manager already lets you install apps, now it's about to let you remove them as well. Can you use it to uninstall Windows?
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Kent Sharkey wrote: Can you use it to uninstall Windows?
It would already be enough if you could uninstall the telemetry and the updater.
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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AppSheet is Google Cloud’s no-code application development platform, and even if you don’t know HTML from Python, you can use it to create powerful applications without writing a single line of code. For the software non-developers in the crowd
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I wonder how long will they keep it open...
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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Try Access! It great, you need not write a single line of code and have macro's do the stuff!
Bastard Programmer from Hell
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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My 2021 goal is to sit on a beach all day. No custom apps, no coding, required.
[edit] OMG - they start with a spreadsheet????   [/edit]
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My spouse once asked what I'd really want to be. I replied, "A gentleman." And had to explain that, in Victorian times, this meant someone of sufficient independent means that they didn't need a job.
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Unique physiology allows the Australian marsupial to produce square-shaped faeces that may aid communication Because. You. Needed. To Know!
Fortunately, they're not venomous.
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Kent Sharkey wrote: Fortunately, they're not venomous.
Of course not... they are already poisonous  
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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I think wombats are carrying the world's problems on their heads.
That is the real explanation why they are shitting bricks!😀
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The domain name perl.com was stolen and now points to an IP address associated with malware campaigns. They only noticed because the language started to make sense?
Just another friendly reminder to keep an eye on your domains.
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Did someone forget to pay the fee?
M.D.V.
If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.
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Job and employer-ratings site finds those involved in building and managing digital capabilities at the enterprise level also have the highest levels of satisfaction with their roles. It could be their help was really appreciated over the past year. Clap along if you feel like happiness is large configuration files
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I need no satisfaction, just a big paycheck.
Bastard Programmer from Hell
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Tim Cook says there will be consequences to having 'rampant disinformation and conspiracy theories juiced by algorithms'. We need to go back to pushing society to buy shiny laptops
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