Update custom tags (#12183)

paper-server/src/test/java/io/papermc/paper/registry/CustomTagsTest.java

@@ -0,0 +1,51 @@
+package io.papermc.paper.registry;
+
+import com.destroystokyo.paper.MaterialTags;
+import io.papermc.paper.tag.BaseTag;
+import io.papermc.paper.tag.EntityTags;
+import java.lang.reflect.Field;
+import java.lang.reflect.Modifier;
+import java.util.HashSet;
+import java.util.Set;
+import org.bukkit.support.environment.AllFeatures;
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.MethodSource;
+
+import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+@AllFeatures
+public class CustomTagsTest {
+
+    @BeforeAll
+    public static void testInitialize() {
+        assertDoesNotThrow(() -> Class.forName(MaterialTags.class.getName()));
+        assertDoesNotThrow(() -> Class.forName(EntityTags.class.getName()));
+    }
+
+    @ParameterizedTest
+    @MethodSource("tags")
+    public void testLocked(BaseTag<?, ?> tag) {
+        assertTrue(tag.isLocked(), "Tag " + tag.key() + " is not locked");
+    }
+
+    public static Set<BaseTag<?, ?>> tags() {
+        Set<BaseTag<?, ?>> tags = new HashSet<>();
+        collectTags(tags, MaterialTags.class);
+        collectTags(tags, EntityTags.class);
+        return tags;
+    }
+
+    private static void collectTags(Set<BaseTag<?, ?>> into, Class<?> clazz) {
+        try {
+            for (Field field : clazz.getDeclaredFields()) {
+                if (Modifier.isStatic(field.getModifiers()) && Modifier.isFinal(field.getModifiers()) && BaseTag.class.isAssignableFrom(field.getType())) {
+                    into.add((BaseTag<?, ?>) field.get(null));
+                }
+            }
+        } catch (ReflectiveOperationException ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+}