Add some testing

src/test/java/org/bukkit/ArtTest.java

@@ -0,0 +1,43 @@
+package org.bukkit;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.Matchers.hasSize;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertThat;
+
+import java.util.List;
+
+import net.minecraft.server.EnumArt;
+
+import org.junit.Test;
+
+import com.google.common.collect.Lists;
+
+public class ArtTest {
+    private static final int UNIT_MULTIPLIER = 16;
+
+    @Test
+    public void verifyMapping() {
+        List<Art> arts = Lists.newArrayList(Art.values());
+
+        for (EnumArt enumArt : EnumArt.values()) {
+            int id = enumArt.ordinal();
+            String name = enumArt.A;
+            int width = enumArt.B / UNIT_MULTIPLIER;
+            int height = enumArt.C / UNIT_MULTIPLIER;
+
+            Art subject = Art.getById(id);
+
+            String message = String.format("org.bukkit.Art is missing id: %d named: '%s'", id - Achievement.STATISTIC_OFFSET, name);
+            assertNotNull(message, subject);
+
+            assertThat(Art.getByName(name), is(subject));
+            assertThat("Art." + subject + "'s width", subject.getBlockWidth(), is(width));
+            assertThat("Art." + subject + "'s height", subject.getBlockHeight(), is(height));
+
+            arts.remove(subject);
+        }
+
+        assertThat("org.bukkit.Art has too many arts", arts, hasSize(0));
+    }
+}