Function expect

sdk/app-builder-sdk/reference/slack-messaging/e2e.ts:119–133

(actual: T)

function when(s: string)  { console.log(`    When  ${s}`) }
function then(s: string)  { console.log(`    Then  ${s}`) }
function expect<T>(actual: T) {
  return {
    toBe(expected: T, label = "value") {
      if (actual !== expected) throw new Error(
        `${label}: expected ${JSON.stringify(expected)}, got ${JSON.stringify(actual)}`)
    },
    toBeTruthy(label = "value") {
      if (!actual) throw new Error(`${label}: expected truthy, got ${JSON.stringify(actual)}`)
    },
    toMatch(re: RegExp, label = "value") {
      if (typeof actual !== "string" || !re.test(actual))
        throw new Error(`${label}: expected to match ${re}, got ${JSON.stringify(actual)}`)
    },
  }
}

// Specialized assertion for action results — if the action failed, includes
// the full fail.code + message in the error so we don't have to guess.