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27 lines
914 B
TypeScript
27 lines
914 B
TypeScript
/**
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* @fileOverview Utilities to aid in unit testing where multiple potential values need to be considered.
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* Picking from a pool of limited data randomly can add further resilience.
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*/
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/**
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* Randomly returns either `true` or `false`
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*/
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export const getRandomBoolean = (): boolean => Math.random() > 0.5;
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/**
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* Returns a random integer between `min` and `max`, inclusive
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*/
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export function getRandomIntBetween(min: number, max: number): number {
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const intMin = Math.ceil(min);
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const intMax = Math.floor(max);
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return Math.floor(Math.random() * (intMax - intMin + 1) + intMin);
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}
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/**
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* Returns a random item from the provided `array`, throws an error if `array is empty
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*/
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export const getRandomArrayItem = <T>(array: T[]): T => {
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if (array.length === 0) throw new Error('Attempt to pick random item from empty array');
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return array[Math.floor(Math.random() * array.length)];
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};
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