Introduce testKosmosLegacy for dispatcher migration

import com.android.systemui.kosmos.Kosmos

import com.android.systemui.kosmos.testCase

import com.android.systemui.kosmos.useStandardTestDispatcher

fun SysuiTestCase.testKosmos(): Kosmos = Kosmos().apply { testCase = this@testKosmos }

/**

 * This should not be called directly. Instead, you can use:

 * - testKosmos() to use the default dispatcher (which will soon be unconfined, see go/thetiger)

 * - testKosmos().useStandardTestDispatcher() to explicitly choose the standard dispatcher

 * - testKosmos().useUnconfinedTestDispatcher() to explicitly choose the unconfined dispatcher

 *

 * For details, see go/thetiger

 */

@Deprecated("Do not call this directly.  Use testKosmos() with dispatcher functions if needed.")

fun SysuiTestCase.testKosmosLegacy(): Kosmos =

    Kosmos().useStandardTestDispatcher().apply { testCase = this@testKosmosLegacy }

/** Run [f] on the main thread and return its result once completed. */

fun <T : Any> SysuiTestCase.runOnMainThreadAndWaitForIdleSync(f: () -> T): T {

    lateinit var result: T