How can I test async code(like promise) in kotlin....

# javascript

[wickedev]

How can I test async code(like promise) in kotlin.js?

[Alexander Mikhalchenko]

You could use Promise<T>.await() extension from kotlinx-coroutines-core-js module https://github.com/Kotlin/kotlinx.coroutines/blob/379f210f1d6f6ee91d6198348bd16306c93153ce/js/kotlinx-coroutines-core-js/src/main/kotlin/kotlinx/coroutines/experimental/Promise.kt#L84

[gaetan]

If your js framework manages asynch (mocha for example) you can make your test returns a promise. The test framework will then wait for the promise completion. See https://github.com/data2viz/data2viz/blob/master/timer/d2v-timer-js/src/test/kotlin/io/data2viz/timer/TimerTests.kt#L18