76 lines
2.2 KiB
Kotlin
76 lines
2.2 KiB
Kotlin
/*
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* Copyright (c) 2022 Proton AG
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*
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* This file is part of Proton Mail.
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*
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* Proton Mail is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Proton Mail is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Proton Mail. If not, see https://www.gnu.org/licenses/.
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*/
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package ch.protonmail.android.utils
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import ch.protonmail.android.domain.util.leftOrNull
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import io.mockk.every
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import io.mockk.mockk
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import io.mockk.verify
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import kotlinx.coroutines.test.runBlockingTest
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import org.junit.Test
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import java.io.IOException
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import kotlin.test.assertEquals
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import kotlin.test.assertTrue
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internal class TryWithRetryTest {
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private val block = mockk<() -> Int>()
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private val tryWithRetry = TryWithRetry()
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@Test
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fun `should return the result when block returns`() = runBlockingTest {
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// given
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val expectedResult = 42
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every { block() } returns expectedResult
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// when
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val actualResult = tryWithRetry { block() }.orNull()
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// then
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assertEquals(expectedResult, actualResult)
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}
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@Test
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fun `should return errors when all retries fail`() = runBlockingTest {
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// given
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every { block() } throws IOException()
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// when
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val actualResult = tryWithRetry { block() }.leftOrNull()
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// then
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assertEquals(3, actualResult?.size)
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assertTrue(actualResult!!.all { it is IOException })
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}
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@Test
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fun `should try the provided number of times before failing`() = runBlockingTest {
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// given
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val expectedNumberOfRetries = 42
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every { block() } throws IOException()
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// when
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tryWithRetry(numberOfRetries = expectedNumberOfRetries) { block() }
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// then
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verify(exactly = expectedNumberOfRetries) { block() }
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}
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}
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