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No, that's a separate issue, that eschewing TDD doesn't help you with. With TDD, the inner programming loop is: 1. form a belief about requirements 2. write
by twic 4y ago
No, that's a separate issue, that eschewing TDD doesn't help you with.
With TDD, the inner programming loop is:
1. form a belief about requirements
2. write a test to express that belief
3. write code to make that test pass
Without TDD, the loop is:
1. form a belief about requirements
2. write code to express that belief
3. futz around with manual testing, REPLs, and after-the-fact testing until you're sufficiently happy that the code actually does express that belief
And in my experience, the former loop is faster at producing working code.
- minimeme 4y agoThat's my experience also! It's all about faster feedback and confidence the tests provide.
- ipaddr 4y agoIt usually works out like.. form a belief about a requirement write a test test fails write code test fails add debug info to code test fails no debug showing call code directly and see debug code change assert test fails rewrite test test succeed output test class data.. false positive checking null equals null rewrite test test passes forget original purpose and stare at green passing tests with pride.
- xxs 4y ago> add debug info to code On a more serious note: just learn to use a debugger, and add asserts, if need be. To me TDD only helps having something that would run your code - but that's pretty much it. If you have other test harness options, I fail to see the benefits outside conference talks and books authoring.
- pmarreck 4y agomy professional opinion is that having to resort to a debugger is a bad-design, bad-testing code smell
- laserlight 4y agoYes, so much this. I don’t really understand how people could object to TDD. It’s just about putting together what one manually does otherwise. As a bonus, it’s not subject to biases because of after-the-fact testing.
- pjmlp 4y agoTest the belief of recovery from a network split in distributed commit.
- laserlight 4y agoI don't get the point. Is it something not testable? If it's testable, it's TDD-able.
- pjmlp 4y agoTDD sales pitch is not to write any code without an existing test.