Function assertOnlyKeysAffected

packages/db-ivm/tests/test-utils.ts:281–301

(
  testName: string,
  messages: Array<[[K, V], number]>,
  expectedKeys: Array<K>,
)

 * Assert that only specific keys appear in messages (for incremental processing verification)
 */
export function assertOnlyKeysAffected<K, V>(
  testName: string,
  messages: Array<[[K, V], number]>,
  expectedKeys: Array<K>,
) {
  const actualKeys = extractMessageKeys(messages)
  const expectedKeySet = new Set(expectedKeys)

  // Check that all actual keys are expected
  Array.from(actualKeys).forEach((key) => {
    if (!expectedKeySet.has(key)) {
      throw new Error(`${testName}: Unexpected key ${key} in messages`)
    }
  })

  if (LOG_RESULTS) {
    console.log(
      `${testName}: ✅ Only expected keys affected: ${Array.from(actualKeys).join(`, `)}`,
    )
  }
}

export const compareFractionalIndex = (
  r1: [unknown, [unknown, string]],