diff --git a/README.md b/README.md
index 5285b8de..e3386b13 100644
--- a/README.md
+++ b/README.md
@@ -66,11 +66,7 @@ Hippo-4J 通过对 JDK 线程池增强，以及扩展三方框架底层线程池
 
 Hippo-4J 获得的成就属于每一位贡献者！如果有意贡献，请参考 [good first issue](https://github.com/opengoofy/hippo4j/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+first+issue%22) 或者 [good pro issue](https://github.com/opengoofy/hippo4j/issues?q=is%3Aissue+is%3Aopen+label%3A%22good+pro+issue%22)。
 
-<a href="https://github.com/opengoofy/hippo4j/graphs/contributors">
-    <img src="https://contrib.rocks/image?repo=opengoofy/hippo4j" />
-</a>
-
-
+<a href="https://github.com/opengoofy/hippo4j/graphs/contributors"><img src="https://opencollective.com/hippo4j/contributors.svg?width=890&button=false" /></a>
 
 ## 谁在使用
 
diff --git a/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/BeanUtilTest.java b/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/BeanUtilTest.java
index c0e1e066..7f44fa32 100644
--- a/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/BeanUtilTest.java
+++ b/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/BeanUtilTest.java
@@ -21,13 +21,11 @@ import cn.hippo4j.common.toolkit.Assert;
 import com.github.dozermapper.core.converters.ConversionException;
 import com.google.common.collect.Lists;
 import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
 import lombok.*;
 import org.junit.Test;
 
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Objects;
+import java.util.*;
 
 /**
  * BeanUtil Test
@@ -75,6 +73,17 @@ public class BeanUtilTest {
         Assert.isTrue(Objects.equals(list.size(), persons.size()));
     }
 
+    @Test
+    public void SetToSetConvertTest() {
+        final Set<Person> sets = Sets.newHashSet();
+        sets.add(Person.builder().name("one").age(1).build());
+        sets.add(Person.builder().name("two").age(2).build());
+        sets.add(Person.builder().name("three").age(3).build());
+
+        final Set<PersonVo> persons = BeanUtil.convert(sets, PersonVo.class);
+        Assert.isTrue(Objects.equals(sets.size(), persons.size()));
+    }
+
     @Test
     public void copyPropertiesBeanToMapTest() {
         // 测试BeanToMap
diff --git a/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/ClassUtilTest.java b/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/ClassUtilTest.java
index 41aff764..cffb82b1 100644
--- a/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/ClassUtilTest.java
+++ b/hippo4j-config/src/test/java/cn/hippo4j/config/toolkit/ClassUtilTest.java
@@ -17,8 +17,59 @@
 
 package cn.hippo4j.config.toolkit;
 
+import cn.hippo4j.common.toolkit.Assert;
+import cn.hutool.core.lang.caller.CallerUtil;
+import org.junit.Test;
+
+import java.util.Objects;
+
 /**
  * ClassUtil Test
  */
 public class ClassUtilTest {
+
+    @Test
+    public void isAssignableFromTest() {
+        final boolean assignableFrom = ClassUtil.isAssignableFrom(TestClass.class, TestSubClass.class);
+        Assert.isTrue(assignableFrom);
+    }
+
+    @Test
+    public void isNotAssignableFromTest() {
+        final boolean assignableFrom = ClassUtil.isAssignableFrom(TestSubClass.class, TestClass.class);
+        Assert.isTrue(!assignableFrom);
+    }
+
+    @Test
+    public void getCanonicalNameTest() {
+        final String canonicalName = ClassUtil.getCanonicalName(TestClass.class);
+        Assert.isTrue(Objects.equals("cn.hippo4j.config.toolkit.ClassUtilTest.TestClass", canonicalName));
+    }
+
+    @SuppressWarnings("unused")
+    static class TestClass {
+
+        private String privateField;
+
+        protected String field;
+
+        private void privateMethod() {
+        }
+
+        public void publicMethod() {
+        }
+    }
+
+    @SuppressWarnings({"unused", "InnerClassMayBeStatic"})
+    class TestSubClass extends TestClass {
+
+        private String subField;
+
+        private void privateSubMethod() {
+        }
+
+        public void publicSubMethod() {
+        }
+
+    }
 }