add Md5UtilTest test case (#677)

* add FileUtilTest test case

* add Md5UtilTest test case

hippo4j-common/src/test/java/cn/hippo4j/common/toolkit/Md5UtilTest.java

@@ -17,5 +17,55 @@
 
 package cn.hippo4j.common.toolkit;
 
+import cn.hippo4j.common.model.ThreadPoolParameterInfo;
+import org.junit.Test;
+
+import java.io.IOException;
+import java.security.NoSuchAlgorithmException;
+import java.util.ArrayList;
+import java.util.List;
+
 public class Md5UtilTest {
+
+    @Test
+    public void assertMd5Hex() throws NoSuchAlgorithmException {
+        String md5 = "3cdefff74dcf7a5d60893865b84b62c8";
+        String message = "message-consume";
+        Assert.isTrue(md5.equals(Md5Util.md5Hex(message.getBytes())));
+    }
+
+    @Test
+    public void assertMd5Hex2() {
+        String md5 = "503840dc3af3cdb39749cd099e4dfeff";
+        String message = "dynamic-threadpool-example";
+        Assert.isTrue(md5.equals(Md5Util.md5Hex(message, "UTF-8")));
+    }
+
+    @Test
+    public void assetEncodeHexString() {
+        String encodeHexString = "00010f107f80203040506070";
+        byte[] bytes = {0, 1, 15, 16, 127, -128, 32, 48, 64, 80, 96, 112};
+        Assert.isTrue(encodeHexString.equals(Md5Util.encodeHexString(bytes)));
+    }
+
+    @Test
+    public void assetGetTpContentMd5() {
+        String md5Result = "ef5ea7cb47377fb9fb85a7125e76715d";
+        ThreadPoolParameterInfo threadPoolParameterInfo = ThreadPoolParameterInfo.builder().tenantId("prescription")
+                .itemId("dynamic-threadpool-example").tpId("message-consume").content("描述信息").corePoolSize(1)
+                .maximumPoolSize(2).queueType(1).capacity(4).keepAliveTime(513).executeTimeOut(null).rejectedType(4)
+                .isAlarm(1).capacityAlarm(80).livenessAlarm(80).allowCoreThreadTimeOut(1).build();
+        Assert.isTrue(md5Result.equals(Md5Util.getTpContentMd5(threadPoolParameterInfo)));
+    }
+
+    @Test
+    public void assetCompareMd5ResultString() throws IOException {
+        Assert.isTrue("".equals(Md5Util.compareMd5ResultString(null)));
+        String result = "prescription%02dynamic-threadpool-example%02message-consume%01" +
+                "prescription%02dynamic-threadpool-example%02message-produce%01";
+        List<String> changedGroupKeys = new ArrayList<>(2);
+        changedGroupKeys.add("prescription+dynamic-threadpool-example+message-consume+12");
+        changedGroupKeys.add("prescription+dynamic-threadpool-example+message-produce+11");
+        Assert.isTrue(result.equals(Md5Util.compareMd5ResultString(changedGroupKeys)));
+    }
 }