"How to test?" is a question that cannot be answered in general. "When to test?" however, does have a general answer: as early and as often as possible.
--
Stroustrup, Bjarne. The C++ Programming Language. pp. 712.Bjarne Stroustrup
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"General Turquoise Blue?" asked Arthur. "I didn't make Suzy a general, did I? I remember her talking about it, but I don't remember actually..."
"She probably just put on the uniform," said Dr Scamandros. "No one would question her."Garth Nix
They will ask: "Who gave you the Teaching?"
Answer: "The Mahatma of the East."
They will ask: "Where does He live?"
Answer: "The abode of the Teacher not only cannot be made known but cannot even be uttered. Your question shows how far you are from the understanding of the Teaching. Even humanly you must realize how wrong your question is."
They will ask: "When can I be useful?"
Answer: "From this hour unto eternity."
"When should I prepare myself for labor?"
"Lose not an hour!"
"And when will the call come?"
"Even sleep vigilantly."
"How shall I work until this hour?"
"Enhancing the quality of labor."Nicholas Roerich
"Of course, the test difficulty depends on what you're doing, and on how you're doing it. I'm constantly asking "How much would I have to screw this up to write an incorrect function that passes these simple tests?" Occasionally the answer is "Not much," so I'll throw the code away and start over. It was probably perfect code, but that's not good enough."
Daniel J. Bernstein
Before I go on with this short history, let me make a general observation – the test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
One should, for example, be able to see that things are hopeless and yet be determined to make them otherwise. This philosophy fitted on to my early adult life, when I saw the improbable, the implausible, often the "impossible," come true.F. Scott Fitzgerald
It means "Ask the next question." Ask the next question, and the one that follows that, and the one that follows that. It's the symbol of everything humanity has ever created, and is the reason it has been created. This guy is sitting in a cave and he says, "Why can't man fly?" Well, that's the question. The answer may not help him, but the question now has been asked.
The next question is what? How? And so all through the ages, people have been trying to find out the answer to that question. We've found the answer, and we do fly. This is true of every accomplishment, whether it's technology or literature, poetry, political systems or anything else. That is it. Ask the next question. And the one after that.Theodore Sturgeon
Stroustrup, Bjarne
Strummer, Joe
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