fix(test): Unit Tests not DFUing items

src/main/kotlin/features/debug/AnimatedClothingScanner.kt

@@ -81,7 +81,6 @@ object AnimatedClothingScanner {
 								if (subject == null) run {
 									val entity = MC.instance.targetedEntity ?: return@run null
 									val clipboard = ClipboardUtils.getTextContents()
-									MC.instance.entit
 									if (!clipboard.startsWith(EXPORT_WATERMARK)) {
 										ClipboardUtils.setTextContent(EXPORT_WATERMARK)
 									} else {

src/main/kotlin/features/debug/ExportedTestConstantMeta.kt

@@ -0,0 +1,19 @@
+package moe.nea.firmament.features.debug
+
+import com.mojang.serialization.Codec
+import com.mojang.serialization.codecs.RecordCodecBuilder
+import java.util.Optional
+
+data class ExportedTestConstantMeta(
+	val dataVersion: Int,
+	val modVersion: Optional<String>,
+) {
+	companion object {
+		val CODEC: Codec<ExportedTestConstantMeta> = RecordCodecBuilder.create {
+			it.group(
+				Codec.INT.fieldOf("dataVersion").forGetter(ExportedTestConstantMeta::dataVersion),
+				Codec.STRING.optionalFieldOf("modVersion").forGetter(ExportedTestConstantMeta::modVersion),
+			).apply(it, ::ExportedTestConstantMeta)
+		}
+	}
+}

src/main/kotlin/features/debug/PowerUserTools.kt

@@ -180,10 +180,10 @@ object PowerUserTools : FirmamentFeature {
 				Pair(item, Text.stringifiedTranslatable("firmament.tooltip.copied.skull-id", skullTexture.toString()))
 			println("Copied skull id: $skullTexture")
 		} else if (it.matches(TConfig.copyItemStack)) {
-			ClipboardUtils.setTextContent(
-				ItemStack.CODEC
-					.encodeStart(MC.currentOrDefaultRegistries.getOps(NbtOps.INSTANCE), item)
-					.orThrow.toPrettyString())
+			val nbt = ItemStack.CODEC
+				.encodeStart(MC.currentOrDefaultRegistries.getOps(NbtOps.INSTANCE), item)
+				.orThrow
+			ClipboardUtils.setTextContent(nbt.toPrettyString())
 			lastCopiedStack = Pair(item, Text.stringifiedTranslatable("firmament.tooltip.copied.stack"))
 		}
 	}

src/test/kotlin/testutil/ItemResources.kt

@@ -1,13 +1,23 @@
 package moe.nea.firmament.test.testutil
 
+import com.mojang.datafixers.DSL
+import com.mojang.datafixers.DataFixUtils
+import com.mojang.datafixers.types.templates.Named
+import com.mojang.serialization.Dynamic
+import com.mojang.serialization.JsonOps
+import net.minecraft.SharedConstants
+import net.minecraft.datafixer.Schemas
+import net.minecraft.datafixer.TypeReferences
 import net.minecraft.item.ItemStack
 import net.minecraft.nbt.NbtCompound
 import net.minecraft.nbt.NbtElement
 import net.minecraft.nbt.NbtOps
+import net.minecraft.nbt.NbtString
 import net.minecraft.nbt.StringNbtReader
 import net.minecraft.registry.RegistryOps
 import net.minecraft.text.Text
 import net.minecraft.text.TextCodecs
+import moe.nea.firmament.features.debug.ExportedTestConstantMeta
 import moe.nea.firmament.test.FirmTestBootstrap
 import moe.nea.firmament.util.MC
 
@@ -28,15 +38,45 @@ object ItemResources {
 	}
 	fun getNbtOps(): RegistryOps<NbtElement> = MC.currentOrDefaultRegistries.getOps(NbtOps.INSTANCE)
 
+	fun tryMigrateNbt(
+		nbtCompound: NbtCompound,
+		typ: DSL.TypeReference,
+	): NbtElement {
+		val source = nbtCompound.get("source", ExportedTestConstantMeta.CODEC)
+		nbtCompound.remove("source")
+		if (source.isPresent) {
+			val wrappedNbtSource = if (typ == TypeReferences.TEXT_COMPONENT && source.get().dataVersion < 4325) {
+				// Per 1.21.5 text components are wrapped in a string, which firmament unwrapped in the snbt files
+				NbtString.of(
+					NbtOps.INSTANCE.convertTo(JsonOps.INSTANCE, nbtCompound)
+						.toString())
+			} else {
+				nbtCompound
+			}
+			return Schemas.getFixer()
+				.update(
+					typ,
+					Dynamic(NbtOps.INSTANCE, wrappedNbtSource),
+					source.get().dataVersion,
+					SharedConstants.getGameVersion().saveVersion.id
+				).value
+		}
+		return nbtCompound
+	}
+
 	fun loadText(name: String): Text {
-		return TextCodecs.CODEC.parse(getNbtOps(), loadSNbt("testdata/chat/$name.snbt"))
-			.getOrThrow { IllegalStateException("Could not load test chat '$name': $it") }
+		return TextCodecs.CODEC.parse(
+			getNbtOps(),
+			tryMigrateNbt(loadSNbt("testdata/chat/$name.snbt"), TypeReferences.TEXT_COMPONENT)
+		).getOrThrow { IllegalStateException("Could not load test chat '$name': $it") }
 	}
 
 	fun loadItem(name: String): ItemStack {
-		// TODO: make the load work with enchantments
-		// TODO: use DFU to load older items
-		return ItemStack.CODEC.parse(getNbtOps(), loadSNbt("testdata/items/$name.snbt"))
-			.getOrThrow { IllegalStateException("Could not load test item '$name': $it") }
+		try {
+			val itemNbt = loadSNbt("testdata/items/$name.snbt")
+			return ItemStack.CODEC.parse(getNbtOps(), tryMigrateNbt(itemNbt, TypeReferences.ITEM_STACK)).orThrow
+		} catch (ex: Exception) {
+			throw RuntimeException("Could not load item resource '$name'", ex)
+		}
 	}
 }

src/test/resources/testdata/chat/all-chat.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	extra: [
 		{
 			bold: 0b,

src/test/resources/testdata/chat/sacks/gain-and-lose-regular.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	color: "#FFAA00",
 	extra: [
 		{

src/test/resources/testdata/chat/sacks/gain-rotten-flesh.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	color: "#FFAA00",
 	extra: [
 		{

src/test/resources/testdata/items/aspect-of-the-void.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/books/feather_falling.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/diamond-pickaxe.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/gemstone-gauntlet.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/hyperion.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/implosion-belt.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/necron-boots.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/pets/lion-item.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [

src/test/resources/testdata/items/pets/mithril-golem-not-selected.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:custom_data": {
 			id: "PET",

src/test/resources/testdata/items/pets/rabbit-selected.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:custom_data": {
 			id: "PET",

src/test/resources/testdata/items/rune-in-sack.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:custom_data": {
 		},

src/test/resources/testdata/items/titanium-drill.snbt

@@ -1,4 +1,7 @@
 {
+	source: {
+		dataVersion: 4189,
+	},
 	components: {
 		"minecraft:attribute_modifiers": {
 			modifiers: [