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+package tachiyomi.domain.manga.interactor
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+
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+import io.kotest.matchers.shouldBe
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+import io.mockk.mockk
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+import org.junit.jupiter.api.Test
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+import org.junit.jupiter.api.parallel.Execution
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+import org.junit.jupiter.api.parallel.ExecutionMode
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+import tachiyomi.domain.chapter.model.Chapter
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+import java.time.ZoneOffset
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+import java.time.ZonedDateTime
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+import kotlin.time.Duration
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+import kotlin.time.Duration.Companion.days
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+import kotlin.time.Duration.Companion.hours
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+import kotlin.time.DurationUnit
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+import kotlin.time.toDuration
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+import kotlin.time.toJavaDuration
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+
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+@Execution(ExecutionMode.CONCURRENT)
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+class FetchIntervalTest {
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+
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+ private val testTime = ZonedDateTime.parse("2020-01-01T00:00:00Z")
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+ private val testZoneId = ZoneOffset.UTC
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+ private var chapter = Chapter.create().copy(
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+ dateFetch = testTime.toEpochSecond() * 1000,
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+ dateUpload = testTime.toEpochSecond() * 1000,
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+ )
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+
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+ private val fetchInterval = FetchInterval(mockk())
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+
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+ @Test
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+ fun `returns default interval of 7 days when not enough distinct days`() {
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+ val chaptersWithUploadDate = (1..50).map {
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+ chapterWithTime(chapter, 1.days)
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+ }
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+ fetchInterval.calculateInterval(chaptersWithUploadDate, testZoneId) shouldBe 7
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+
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+ val chaptersWithoutUploadDate = chaptersWithUploadDate.map {
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+ it.copy(dateUpload = 0L)
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+ }
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+ fetchInterval.calculateInterval(chaptersWithoutUploadDate, testZoneId) shouldBe 7
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+ }
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+
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+ @Test
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+ fun `returns interval based on more recent chapters`() {
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+ val oldChapters = (1..5).map {
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+ chapterWithTime(chapter, (it * 7).days) // Would have interval of 7 days
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+ }
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+ val newChapters = (1..10).map {
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+ chapterWithTime(chapter, oldChapters.lastUploadDate() + it.days)
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+ }
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+
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+ val chapters = oldChapters + newChapters
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+
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+ fetchInterval.calculateInterval(chapters, testZoneId) shouldBe 1
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+ }
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+
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+ @Test
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+ fun `returns interval of 7 days when multiple chapters in 1 day`() {
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+ val chapters = (1..10).map {
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+ chapterWithTime(chapter, 10.hours)
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+ }
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+ fetchInterval.calculateInterval(chapters, testZoneId) shouldBe 7
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+ }
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+
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+ @Test
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+ fun `returns interval of 7 days when multiple chapters in 2 days`() {
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+ val chapters = (1..2).map {
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+ chapterWithTime(chapter, 1.days)
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+ } + (1..5).map {
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+ chapterWithTime(chapter, 2.days)
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+ }
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+ fetchInterval.calculateInterval(chapters, testZoneId) shouldBe 7
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+ }
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+
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+ @Test
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+ fun `returns interval of 1 day when chapters are released every 1 day`() {
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+ val chapters = (1..20).map {
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+ chapterWithTime(chapter, it.days)
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+ }
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+ fetchInterval.calculateInterval(chapters, testZoneId) shouldBe 1
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+ }
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+
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+ @Test
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+ fun `returns interval of 1 day when delta is less than 1 day`() {
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+ val chapters = (1..20).map {
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+ chapterWithTime(chapter, (15 * it).hours)
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+ }
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+ fetchInterval.calculateInterval(chapters, testZoneId) shouldBe 1
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+ }
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+
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+ @Test
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+ fun `returns interval of 2 days when chapters are released every 2 days`() {
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+ val chapters = (1..20).map {
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+ chapterWithTime(chapter, (2 * it).days)
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+ }
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+ fetchInterval.calculateInterval(chapters, testZoneId) shouldBe 2
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+ }
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+
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+ @Test
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+ fun `returns interval with floored value when interval is decimal`() {
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+ val chaptersWithUploadDate = (1..5).map {
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+ chapterWithTime(chapter, (25 * it).hours)
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+ }
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+ fetchInterval.calculateInterval(chaptersWithUploadDate, testZoneId) shouldBe 1
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+
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+ val chaptersWithoutUploadDate = chaptersWithUploadDate.map {
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+ it.copy(dateUpload = 0L)
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+ }
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+ fetchInterval.calculateInterval(chaptersWithoutUploadDate, testZoneId) shouldBe 1
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+ }
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+
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+ @Test
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+ fun `returns interval of 1 day when chapters are released just below every 2 days`() {
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+ val chapters = (1..20).map {
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+ chapterWithTime(chapter, (43 * it).hours)
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+ }
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+ fetchInterval.calculateInterval(chapters, testZoneId) shouldBe 1
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+ }
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+
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+ private fun chapterWithTime(chapter: Chapter, duration: Duration): Chapter {
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+ val newTime = testTime.plus(duration.toJavaDuration()).toEpochSecond() * 1000
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+ return chapter.copy(dateFetch = newTime, dateUpload = newTime)
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+ }
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+
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+ private fun List<Chapter>.lastUploadDate() =
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+ last().dateUpload.toDuration(DurationUnit.MILLISECONDS)
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+}
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arkon