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41 lines
1.3 KiB
Kotlin
41 lines
1.3 KiB
Kotlin
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.fenix.ext
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.launch
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import kotlinx.coroutines.runBlocking
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import org.junit.Assert.assertEquals
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import org.junit.Test
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import java.util.concurrent.atomic.AtomicInteger
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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class AtomicIntegerTest {
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@Test
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fun `Safely increment an AtomicInteger from different coroutines`() {
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val integer = AtomicInteger(0)
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runBlocking {
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for (i in 1..2) {
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launch(Dispatchers.Default) {
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integer.getAndIncrementNoOverflow()
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}
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}
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}
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assertEquals(integer.get(), 2)
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}
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@Test
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fun `Incrementing the AtomicInteger should not overflow`() {
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val integer = AtomicInteger(Integer.MAX_VALUE)
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integer.getAndIncrementNoOverflow()
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assertEquals(integer.get(), Integer.MAX_VALUE)
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}
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}
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