Add some testing

By: Erik Broes <erikbroes@grum.nl>

paper-api/src/test/java/org/bukkit/ArtTest.java

@@ -0,0 +1,45 @@
+package org.bukkit;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.Matchers.greaterThan;
+import static org.junit.Assert.assertThat;
+
+import org.junit.Test;
+
+public class ArtTest {
+
+    @Test(expected = IllegalArgumentException.class)
+    public void getByNullName() {
+        Art.getByName(null);
+    }
+
+    @Test
+    public void getById() {
+        for (Art art : Art.values()) {
+            assertThat(Art.getById(art.getId()), is(art));
+        }
+    }
+
+    @Test
+    public void getByName() {
+        for (Art art : Art.values()) {
+            assertThat(Art.getByName(art.toString()), is(art));
+        }
+    }
+
+    @Test
+    public void dimensionSanityCheck() {
+        for (Art art : Art.values()) {
+            assertThat(art.getBlockHeight(), is(greaterThan(0)));
+            assertThat(art.getBlockWidth(), is(greaterThan(0)));
+        }
+    }
+
+    @Test
+    public void getByNameWithMixedCase() {
+        Art subject = Art.values()[0];
+        String name = subject.toString().replace('E', 'e');
+
+        assertThat(Art.getByName(name), is(subject));
+    }
+}