添加测试用例

hutool-extra/src/test/java/cn/hutool/extra/emoji/EmojiUtilTest.java

@@ -16,4 +16,13 @@ public class EmojiUtilTest {
 		String alias = EmojiUtil.toAlias("😄");
 		Assert.assertEquals(":smile:", alias);
 	}
+	
+	@Test
+	public void containsEmojiTest() {
+		boolean containsEmoji = EmojiUtil.containsEmoji("测试一下是否包含EMOJ:😄");
+		Assert.assertEquals(containsEmoji, true);
+		boolean notContainsEmoji = EmojiUtil.containsEmoji("不包含EMOJ:^_^");
+		Assert.assertEquals(notContainsEmoji, false);
+
+	}
 }