When you test ideas, it’s always good.
The moment you do a test, you’re winning — you’re learning something new, you’re finding a better way, or you’re avoiding a mistake.
There’s no such thing as a “failed” test. Tests aren’t Pass vs. Fail.
Tests are A vs. B. You always learn something about A and B. And then the test was a win.
So challenge your assumptions, try new things, re-think how, re-ask why, and never be satisfied. That’s where excellent comes from.
And you’re never done. When new information comes in, re-test your ideas again. When you learn more in the field, the original ideas that you had (and the results of your original tests) probably changed. So keep re-examining and keep winning.