Function assertAllItemsMatch

packages/db-collection-e2e/src/utils/assertions.ts:89–103

(
  collection: Collection<T>,
  predicate: (item: T) => boolean,
  message?: string,
)

 * Assert that all items in a collection match a predicate
 */
export function assertAllItemsMatch<T extends object>(
  collection: Collection<T>,
  predicate: (item: T) => boolean,
  message?: string,
) {
  const items = Array.from(collection.state.values())
  const failingItems = items.filter((item) => !predicate(item))

  if (failingItems.length > 0) {
    throw new Error(
      message ??
        `${failingItems.length} item(s) did not match predicate: ${JSON.stringify(failingItems[0])}`,
    )
  }
}

/**
 * Assert that items are sorted correctly