Unit tests for json (de)serialization

app/src/test/java/org/koitharu/kotatsu/core/backup/JsonSerializerTest.kt

@@ -0,0 +1,93 @@
+package org.koitharu.kotatsu.core.backup
+
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.koitharu.kotatsu.core.db.entity.MangaEntity
+import org.koitharu.kotatsu.core.db.entity.TagEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteCategoryEntity
+import org.koitharu.kotatsu.favourites.data.FavouriteEntity
+import org.koitharu.kotatsu.history.data.HistoryEntity
+import org.koitharu.kotatsu.parsers.model.MangaSource
+import org.koitharu.kotatsu.parsers.model.MangaState
+import org.koitharu.kotatsu.parsers.model.SortOrder
+import java.util.concurrent.TimeUnit
+
+class JsonSerializerTest {
+
+	@Test
+	fun toFavouriteEntity() {
+		val entity = FavouriteEntity(
+			mangaId = 40,
+			categoryId = 20,
+			createdAt = System.currentTimeMillis(),
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toFavouriteEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toMangaEntity() {
+		val entity = MangaEntity(
+			id = 231,
+			title = "Lorem Ipsum",
+			altTitle = "Lorem Ispum 2",
+			url = "erw",
+			publicUrl = "hthth",
+			rating = 0.78f,
+			isNsfw = true,
+			coverUrl = "5345",
+			largeCoverUrl = null,
+			state = MangaState.FINISHED.name,
+			author = "RERE",
+			source = MangaSource.DUMMY.name,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toMangaEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toTagEntity() {
+		val entity = TagEntity(
+			id = 934023534,
+			title = "Adventure",
+			key = "adventure",
+			source = MangaSource.DUMMY.name,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toTagEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toHistoryEntity() {
+		val entity = HistoryEntity(
+			mangaId = 304135341,
+			createdAt = System.currentTimeMillis() - TimeUnit.DAYS.toMillis(6),
+			updatedAt = System.currentTimeMillis(),
+			chapterId = 29014843034,
+			page = 35,
+			scroll = 24.0f,
+			percent = 0.6f,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toHistoryEntity()
+		assertEquals(entity, result)
+	}
+
+	@Test
+	fun toFavouriteCategoryEntity() {
+		val entity = FavouriteCategoryEntity(
+			categoryId = 142,
+			createdAt = System.currentTimeMillis(),
+			sortKey = 14,
+			title = "Read later",
+			order = SortOrder.RATING.name,
+			track = false,
+		)
+		val json = JsonSerializer(entity).toJson()
+		val result = JsonDeserializer(json).toFavouriteCategoryEntity()
+		assertEquals(entity, result)
+	}
+}