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/*
* Copyright 2018 Allan Wang
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ca.allanwang.kau.kotlin
import kotlin.test.assertEquals
import org.junit.Ignore
import org.junit.Test
/**
* Created by Allan Wang on 2017-08-05.
*/
class DebounceTest {
@Test
fun basic() {
var i = 0
val debounce = debounce(20) { i++ }
assertEquals(0, i, "i should start as 0")
(1..5).forEach { debounce() }
Thread.sleep(50)
assertEquals(1, i, "Debouncing did not cancel previous requests")
}
@Test
fun basicExtension() {
var i = 0
val increment: () -> Unit = { i++ }
(1..5).forEach { increment() }
assertEquals(5, i, "i should be 5")
val debounce = increment.debounce(50)
(6..10).forEach { debounce() }
assertEquals(5, i, "i should not have changed")
Thread.sleep(100)
assertEquals(6, i, "i should increment to 6")
}
@Test
@Ignore("Pending fix")
fun multipleDebounces() {
var i = 0
val debounce = debounce<Int>(20) { i += it }
debounce(1) // ignore -> i = 0
Thread.sleep(10)
assertEquals(0, i)
debounce(2) // accept -> i = 2
Thread.sleep(30)
assertEquals(2, i)
debounce(4) // ignore -> i = 2
Thread.sleep(10)
assertEquals(2, i)
debounce(8) // accept -> i = 10
Thread.sleep(30)
assertEquals(10, i)
}
}
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