hasOneLineDescription top-level constant

const hasOneLineDescription = const _HasOneLineDescription()

Asserts that an object's toString() is a plausible one-line description.

Specifically, this matcher checks that the string does not contains newline characters, and does not have leading or trailing whitespace, is not empty, and does not contain the default Instance of ... string.


const Matcher hasOneLineDescription = _HasOneLineDescription()