Add API to locate structures.

By: Senmori <thesenmori@gmail.com>

paper-server/src/test/java/org/bukkit/StructureTypeTest.java

@@ -0,0 +1,45 @@
+package org.bukkit;
+
+import java.util.Map;
+import net.minecraft.server.WorldGenFactory;
+import org.bukkit.support.AbstractTestingBase;
+import org.junit.Assert;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * This test makes sure that Bukkit always has Minecraft structure types up to
+ * date.
+ */
+public class StructureTypeTest extends AbstractTestingBase {
+
+    private static Map<String, StructureType> structures;
+
+    @BeforeClass
+    public static void setUp() {
+        structures = StructureType.getStructureTypes();
+    }
+
+    @Test
+    public void testMinecraftToBukkit() {
+        for (String key : WorldGenFactory.b.keySet()) { // PAIL rename structureStartMap
+            Assert.assertNotNull(structures.get(key));
+        }
+    }
+
+    @Test
+    public void testBukkit() {
+        for (Map.Entry<String, StructureType> entry : structures.entrySet()) {
+            Assert.assertNotNull(StructureType.getStructureTypes().get(entry.getKey()));
+            Assert.assertNotNull(StructureType.getStructureTypes().get(entry.getValue().getName()));
+        }
+    }
+
+    @Test
+    public void testBukkitToMinecraft() {
+        for (Map.Entry<String, StructureType> entry : structures.entrySet()) {
+            Assert.assertNotNull(WorldGenFactory.b.get(entry.getKey()));
+            Assert.assertNotNull(WorldGenFactory.b.get(entry.getValue().getName()));
+        }
+    }
+}