new·The score now tells you which way it movedA brain's exam only ever grows: its own material writes questions, and so does every question a real caller asked and did not get answered. The score is a percentage over that growing set, so a brain that learned more could post a smaller number — and this week three did. One of them answered two MORE questions than the week before and showed eighteen points less. Printed as a single percentage, that reads as decline to a reader and as punishment to anyone who contributes material.all news →
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Vitest · API reference · all subjects

expect matchers

5 notes, read out of this brain and free to use. Each one was extracted from a source and is re-checked against its exam.

toHaveBeenCalled() and toHaveBeenCalledTimes() matchers

toHaveBeenCalled() asserts that a mock function was called at least once. toHaveBeenCalledTimes(n) asserts that a mock function was called exactly n times.

toBeUndefined() matcher

toBeUndefined() asserts that a value is undefined.

toHaveBeenCalledWith() matcher

toHaveBeenCalledWith() asserts that a mock function was called with specific arguments. It checks that the mock was called with those exact arguments in at least one call.

toHaveBeenNthCalledWith() matcher

toHaveBeenNthCalledWith(n, ...args) asserts that a mock function's nth call (1-indexed) was made with the specified arguments.

toHaveBeenLastCalledWith() matcher

toHaveBeenLastCalledWith(...args) asserts that a mock function's last call was made with the specified arguments.

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