Add tests for ItemNBT

Author: I-Al-Istannen

pom.xml

@@ -90,6 +90,13 @@
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>3.0.0</version>
+            <scope>test</scope>
+        </dependency>
+
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter</artifactId>

src/main/java/me/ialistannen/mininbt/reflection/BukkitReflection.java

@@ -18,8 +18,10 @@ public class BukkitReflection {
   // ==== INIT SERVER VERSION ====
 
   static {
-    // included to allow tests to run. Will not be hit when deployed
-    String name = Bukkit.getServer() == null
+    boolean runningUnderTest = Bukkit.getServer() == null
+        || Bukkit.getServer().getClass().getName().contains("Mockito");
+
+    String name = runningUnderTest
         ? "org.bukkit.craftbukkit.v1_14_R1"
         : Bukkit.getServer().getClass().getPackage().getName();
     String[] split = name.split("\\.");

src/test/java/me/ialistannen/mininbt/ItemNBTUtilTest.java

@@ -0,0 +1,69 @@
+package me.ialistannen.mininbt;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.logging.Logger;
+import me.ialistannen.mininbt.NBTWrappers.NBTTagCompound;
+import me.ialistannen.mininbt.reflection.FluentReflection.FluentType;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.Server;
+import org.bukkit.craftbukkit.v1_14_R1.inventory.CraftItemFactory;
+import org.bukkit.inventory.ItemStack;
+import org.junit.jupiter.api.Disabled;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+
+class ItemNBTUtilTest {
+
+  @Disabled // Pegs all cores at 100% and needs ~15 seconds and quite a lot of RAM
+  @Test
+  public void tagRoundTrip() {
+    NamedTimer timer = new NamedTimer();
+    timer.step("Starting");
+    Server serverMock = Mockito.mock(Server.class);
+    timer.step("Mock created");
+    Mockito.when(serverMock.getItemFactory()).thenReturn(
+        CraftItemFactory.instance()
+    );
+    Mockito.when(serverMock.getLogger()).thenReturn(Logger.getLogger("Test"));
+    timer.step("Registered");
+
+    new FluentType<>(Bukkit.class).findField()
+        .withName("server")
+        .findSingle().getOrThrow()
+        .setValue(null, serverMock);
+
+    timer.step("Set");
+
+    NBTTagCompound baseTag = new NBTTagCompound();
+    baseTag.setString("Hello world", "!!");
+
+    timer.step("Tag created");
+    ItemStack item = new ItemStack(Material.GOLDEN_AXE);
+    timer.step("Item created");
+    ItemStack changed = ItemNBTUtil.setNBTTag(baseTag, item);
+    timer.step("Item tag set");
+
+    assertEquals(
+        new NBTTagCompound(),
+        ItemNBTUtil.getTag(item)
+    );
+
+    assertEquals(
+        baseTag,
+        ItemNBTUtil.getTag(changed)
+    );
+  }
+
+  private static class NamedTimer {
+
+    private long current = System.currentTimeMillis();
+
+    void step(String message) {
+      long duration = System.currentTimeMillis() - current;
+      System.out.println(message + " (" + duration + "ms)");
+      current = System.currentTimeMillis();
+    }
+  }
+}