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test: characterize ItemMicroPart
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package codechicken.microblock;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertSame;
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import java.io.InputStream;
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import java.nio.charset.StandardCharsets;
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import java.util.Base64;
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import java.util.Objects;
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import java.util.Scanner;
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import net.minecraft.item.ItemStack;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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import codechicken.microblock.handler.MicroblockProxy;
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/** Loads a Scala consumer compiled against the reference ItemMicroPart$.MODULE$ ABI used by ProjRed. */
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class ItemMicroPartBinaryCompatibilityTest {
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private static final String MATERIAL = "test:item_micro_part_binary";
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@BeforeAll
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static void registerMaterial() {
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if (MicroMaterialRegistry.getMaterial(MissingMicroMaterial.key()) == null) {
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MicroMaterialRegistry.registerMaterial(MissingMicroMaterial$.MODULE$, MissingMicroMaterial.key());
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}
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if (MicroMaterialRegistry.getMaterial(MATERIAL) == null) {
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MicroMaterialRegistry.registerMaterial(MissingMicroMaterial$.MODULE$, MATERIAL);
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}
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MicroMaterialRegistry$.MODULE$.setupIDMap();
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}
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@Test
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void referenceScalaConsumerStillLinksAgainstAllFourCompanionMethods() throws Exception {
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Class<?> fixtureClass = new FixtureClassLoader(ItemMicroPart.class.getClassLoader()).define(loadFixture());
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Object fixture = fixtureClass.getDeclaredConstructor().newInstance();
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ItemMicroPart previous = MicroblockProxy.itemMicro();
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ItemMicroPart item = new ItemMicroPart();
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MicroblockProxy.itemMicro_$eq(item);
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try {
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int id = MicroMaterialRegistry.materialID(MATERIAL);
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ItemStack numbered = (ItemStack) fixtureClass.getMethod("createById", int.class, int.class)
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.invoke(fixture, 0x401, id);
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ItemStack named = (ItemStack) fixtureClass.getMethod("createByName", int.class, String.class)
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.invoke(fixture, 0x202, MATERIAL);
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assertSame(item, numbered.getItem());
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assertEquals(MATERIAL, numbered.getTagCompound().getString("mat"));
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assertEquals(MATERIAL, named.getTagCompound().getString("mat"));
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assertSame(
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MicroMaterialRegistry.getMaterial(MATERIAL),
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fixtureClass.getMethod("material", ItemStack.class).invoke(fixture, named));
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assertEquals(id, fixtureClass.getMethod("materialId", ItemStack.class).invoke(fixture, named));
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} finally {
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MicroblockProxy.itemMicro_$eq(previous);
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}
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}
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private static byte[] loadFixture() {
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InputStream input = Objects.requireNonNull(
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ItemMicroPartBinaryCompatibilityTest.class
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.getResourceAsStream("/compat/ReferenceScalaItemMicroPartConsumer.class.b64"));
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try (Scanner scanner = new Scanner(input, StandardCharsets.US_ASCII.name()).useDelimiter("\\A")) {
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return Base64.getMimeDecoder().decode(scanner.next());
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}
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}
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private static final class FixtureClassLoader extends ClassLoader {
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private FixtureClassLoader(ClassLoader parent) {
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super(parent);
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}
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private Class<?> define(byte[] bytecode) {
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return defineClass(null, bytecode, 0, bytecode.length);
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}
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}
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}
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package codechicken.microblock;
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import static org.junit.jupiter.api.Assertions.assertArrayEquals;
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import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertFalse;
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import static org.junit.jupiter.api.Assertions.assertNull;
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import static org.junit.jupiter.api.Assertions.assertSame;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.lang.reflect.Modifier;
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import java.util.Arrays;
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import java.util.Set;
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import java.util.TreeSet;
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import net.minecraft.item.ItemStack;
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import net.minecraft.nbt.NBTTagCompound;
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import net.minecraftforge.client.IItemRenderer;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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import org.objectweb.asm.Type;
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import codechicken.microblock.handler.MicroblockProxy;
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class ItemMicroPartCharacterizationTest {
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private static final String MATERIAL = "test:item_micro_part";
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private static final int INVALID_CLASS_DAMAGE = 255 << 8 | 1;
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private static final Set<String> ITEM_METHODS = new TreeSet<>(
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Arrays.asList(
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"getItemStackDisplayName(Lnet/minecraft/item/ItemStack;)Ljava/lang/String;",
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"getSubItems(Lnet/minecraft/item/Item;Lnet/minecraft/creativetab/CreativeTabs;Ljava/util/List;)V",
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"onItemUse(Lnet/minecraft/item/ItemStack;Lnet/minecraft/entity/player/EntityPlayer;Lnet/minecraft/world/World;IIIIFFF)Z",
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"registerIcons(Lnet/minecraft/client/renderer/texture/IIconRegister;)V"));
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private static final Set<String> HELPERS = new TreeSet<>(
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Arrays.asList(
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"checkTagCompound(Lnet/minecraft/item/ItemStack;)V",
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"create(II)Lnet/minecraft/item/ItemStack;",
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"create(IILjava/lang/String;)Lnet/minecraft/item/ItemStack;",
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"create(ILjava/lang/String;)Lnet/minecraft/item/ItemStack;",
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"getMaterial(Lnet/minecraft/item/ItemStack;)Lcodechicken/microblock/MicroMaterialRegistry$IMicroMaterial;",
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"getMaterialID(Lnet/minecraft/item/ItemStack;)I"));
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private static final Set<String> RENDERER = new TreeSet<>(
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Arrays.asList(
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"handleRenderType(Lnet/minecraft/item/ItemStack;Lnet/minecraftforge/client/IItemRenderer$ItemRenderType;)Z",
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"renderHighlight(Lnet/minecraft/entity/player/EntityPlayer;Lnet/minecraft/item/ItemStack;Lnet/minecraft/util/MovingObjectPosition;)Z",
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"renderItem(Lnet/minecraftforge/client/IItemRenderer$ItemRenderType;Lnet/minecraft/item/ItemStack;[Ljava/lang/Object;)V",
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"renderItem(Lnet/minecraftforge/client/IItemRenderer$ItemRenderType;Lnet/minecraft/item/ItemStack;Lscala/collection/Seq;)V",
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"shouldUseRenderHelper(Lnet/minecraftforge/client/IItemRenderer$ItemRenderType;Lnet/minecraft/item/ItemStack;Lnet/minecraftforge/client/IItemRenderer$ItemRendererHelper;)Z"));
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@BeforeAll
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static void registerMaterial() {
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if (MicroMaterialRegistry.getMaterial(MissingMicroMaterial.key()) == null) {
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MicroMaterialRegistry.registerMaterial(MissingMicroMaterial$.MODULE$, MissingMicroMaterial.key());
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}
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if (MicroMaterialRegistry.getMaterial(MATERIAL) == null) {
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MicroMaterialRegistry.registerMaterial(MissingMicroMaterial$.MODULE$, MATERIAL);
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}
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MicroMaterialRegistry$.MODULE$.setupIDMap();
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}
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@Test
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void keepsTheItemCompanionAndRendererSurfaces() throws Exception {
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assertEquals(ITEM_METHODS, publicDeclaredMethods(ItemMicroPart.class, false));
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assertEquals(HELPERS, publicDeclaredMethods(ItemMicroPart.class, true));
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assertEquals(HELPERS, publicDeclaredMethods(ItemMicroPart$.class, false));
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assertEquals(RENDERER, publicDeclaredMethods(ItemMicroPartRenderer$.class, false));
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Set<String> facade = new TreeSet<>(RENDERER);
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facade.remove(
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"renderItem(Lnet/minecraftforge/client/IItemRenderer$ItemRenderType;Lnet/minecraft/item/ItemStack;[Ljava/lang/Object;)V");
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assertEquals(facade, publicDeclaredMethods(ItemMicroPartRenderer.class, true));
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assertArrayEquals(new Class<?>[] { IItemRenderer.class }, ItemMicroPartRenderer$.class.getInterfaces());
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Field itemModule = ItemMicroPart$.class.getField("MODULE$");
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assertTrue(Modifier.isStatic(itemModule.getModifiers()));
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assertTrue(Modifier.isFinal(itemModule.getModifiers()));
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assertSame(ItemMicroPart$.MODULE$, itemModule.get(null));
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Field rendererModule = ItemMicroPartRenderer$.class.getField("MODULE$");
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assertTrue(Modifier.isStatic(rendererModule.getModifiers()));
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assertTrue(Modifier.isFinal(rendererModule.getModifiers()));
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assertSame(ItemMicroPartRenderer$.MODULE$, rendererModule.get(null));
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ItemMicroPartRenderer$.class
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.getDeclaredMethod("renderItem", IItemRenderer.ItemRenderType.class, ItemStack.class, Object[].class);
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}
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@Test
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void constructorSetsTheStableItemIdentity() {
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ItemMicroPart item = new ItemMicroPart();
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assertEquals("item.microblock", item.getUnlocalizedName());
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assertTrue(item.getHasSubtypes());
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}
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@Test
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void tagHelpersCreatePreserveAndResolveMaterialTags() {
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ItemMicroPart item = new ItemMicroPart();
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ItemStack blank = new ItemStack(item, 1, INVALID_CLASS_DAMAGE);
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assertFalse(blank.hasTagCompound());
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assertNull(ItemMicroPart.getMaterial(blank));
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assertTrue(blank.hasTagCompound());
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NBTTagCompound original = blank.getTagCompound();
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ItemMicroPart.checkTagCompound(blank);
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assertSame(original, blank.getTagCompound());
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assertEquals(MicroMaterialRegistry.getMissingId(), ItemMicroPart.getMaterialID(blank));
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blank.getTagCompound().setString("mat", "test:no_such_material");
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assertSame(MissingMicroMaterial$.MODULE$, ItemMicroPart.getMaterial(blank));
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blank.getTagCompound().setString("mat", MATERIAL);
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assertSame(MicroMaterialRegistry.getMaterial(MATERIAL), ItemMicroPart.getMaterial(blank));
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assertEquals(MicroMaterialRegistry.materialID(MATERIAL), ItemMicroPart.getMaterialID(blank));
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}
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@Test
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void creationOverloadsPreserveItemAmountDamageAndMaterialName() {
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ItemMicroPart previous = MicroblockProxy.itemMicro();
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ItemMicroPart item = new ItemMicroPart();
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MicroblockProxy.itemMicro_$eq(item);
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try {
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ItemStack named = ItemMicroPart.create(3, 0x402, MATERIAL);
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assertSame(item, named.getItem());
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assertEquals(3, named.stackSize);
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assertEquals(0x402, named.getItemDamage());
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assertEquals(MATERIAL, named.getTagCompound().getString("mat"));
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int material = MicroMaterialRegistry.materialID(MATERIAL);
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ItemStack numbered = ItemMicroPart.create(0x201, material);
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assertEquals(1, numbered.stackSize);
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assertEquals(0x201, numbered.getItemDamage());
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assertEquals(MATERIAL, numbered.getTagCompound().getString("mat"));
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} finally {
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MicroblockProxy.itemMicro_$eq(previous);
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}
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}
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@Test
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void invalidMicroClassShortCircuitsNamesPlacementAndRendering() {
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ItemMicroPart item = new ItemMicroPart();
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ItemStack stack = new ItemStack(item, 1, INVALID_CLASS_DAMAGE);
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stack.setTagCompound(new NBTTagCompound());
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stack.getTagCompound().setString("mat", MATERIAL);
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assertEquals("Unnamed", item.getItemStackDisplayName(stack));
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assertFalse(item.onItemUse(stack, null, null, 0, 0, 0, 0, 0, 0, 0));
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assertTrue(ItemMicroPartRenderer.handleRenderType(stack, IItemRenderer.ItemRenderType.INVENTORY));
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assertTrue(
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ItemMicroPartRenderer.shouldUseRenderHelper(
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IItemRenderer.ItemRenderType.INVENTORY,
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stack,
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IItemRenderer.ItemRendererHelper.INVENTORY_BLOCK));
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assertFalse(ItemMicroPartRenderer.renderHighlight(null, stack, null));
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assertDoesNotThrow(
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() -> ((IItemRenderer) ItemMicroPartRenderer$.MODULE$)
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.renderItem(IItemRenderer.ItemRenderType.INVENTORY, stack, new Object[0]));
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}
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private static Set<String> publicDeclaredMethods(Class<?> type, boolean staticMethods) {
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Set<String> signatures = new TreeSet<>();
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for (Method method : type.getDeclaredMethods()) {
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if (Modifier.isPublic(method.getModifiers()) && Modifier.isStatic(method.getModifiers()) == staticMethods) {
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signatures.add(method.getName() + Type.getMethodDescriptor(method));
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}
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}
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return signatures;
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}
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}
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