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You should be able to specify a lambda to return a reason #354

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rjmunro opened this issue Jan 11, 2022 · 0 comments

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rjmunro commented Jan 11, 2022

It would be good if I can specify a reason as a lambda:

That way it can be evaluated only if it fails, and it can be passed the result of the evaluation without needing to call it again.

You could then do something like:

assertThat(
  (list) -> String.format("List is not empty, last item is %s", list.get(list.size() - 1)),
  somethingThatReturnsAList(),
  hasLength(0)
);

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