NotificationTest.kt

@Test
fun test_myNotification() {
    // Send the notification
    val id = 13
    val name = "Testing my notification"
    myNotification.send(id = id, name = name)
   
    val manager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

    // Wait until the active notification list has a new one
    composeTestRule.waitUntil { manager.activeNotifications.isNotEmpty() }

    // Validate the notification info
    with(manager.activeNotifications.first()) {
        assertEquals(id, this.id)
        assertEquals(name, this.notification.extras[Notification.EXTRA_TEXT])
    }
}