add ReflectUtilTest test case (#641) (#679)

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

@@ -17,6 +17,97 @@
 
 package cn.hippo4j.common.toolkit;
 
+import lombok.Data;
+import lombok.Getter;
+import lombok.Setter;
+import org.junit.Test;
+
+import java.lang.reflect.Field;
+import java.util.Objects;
+
 public class ReflectUtilTest {
 
+    @Test
+    public void getFieldValueTest() {
+        TestSubClass testSubClass = new TestSubClass();
+        Object privateField = ReflectUtil.getFieldValue(testSubClass, "privateField");
+        Assert.isTrue(Objects.equals("privateField", privateField));
+
+        Object field = ReflectUtil.getFieldValue(testSubClass, "field");
+        Assert.isTrue(Objects.equals("field", field));
+
+    }
+
+    @Test
+    public void getFieldValueByFiledTest(){
+        TestSubClass testSubClass = new TestSubClass();
+        Field privateField = ReflectUtil.getField(TestSubClass.class, "privateField");
+
+        Object privateFieldVal = ReflectUtil.getFieldValue(testSubClass, privateField);
+        Assert.isTrue(Objects.equals("privateField", privateFieldVal));
+    }
+
+    @Test
+    public void getFieldTest(){
+        Field privateField = ReflectUtil.getField(TestSubClass.class, "privateField");
+        Assert.notNull(privateField);
+
+        Field field = ReflectUtil.getField(TestSubClass.class, "field");
+        Assert.notNull(field);
+    }
+
+    @Test
+    public void getFieldsTest(){
+        Field[] fields = ReflectUtil.getFields(TestSubClass.class);
+        Assert.isTrue(Objects.equals(4, fields.length));
+    }
+
+    @Test
+    public void getFieldsDirectlyTest(){
+        Field[] fields = ReflectUtil.getFieldsDirectly(TestSubClass.class, false);
+        Assert.isTrue(Objects.equals(2, fields.length));
+
+        fields = ReflectUtil.getFieldsDirectly(TestSubClass.class, true);
+        Assert.isTrue(Objects.equals(4, fields.length));
+    }
+
+    @Test
+    public void getFieldNameTest(){
+        Field privateField = ReflectUtil.getField(TestSubClass.class, "privateField");
+        String fieldName = ReflectUtil.getFieldName(privateField);
+        Assert.notNull(fieldName);
+
+        Field subField = ReflectUtil.getField(TestSubClass.class, "subField");
+        String subfieldName = ReflectUtil.getFieldName(subField);
+        Assert.notNull(subfieldName);
+    }
+
+    @Test
+    public void setFieldValueTest(){
+        TestClass testClass = new TestClass();
+        ReflectUtil.setFieldValue(testClass, "field", "fieldVal");
+        Assert.isTrue(Objects.equals("fieldVal", testClass.getField()));
+
+        Field privateField = ReflectUtil.getField(TestSubClass.class, "privateField");
+        ReflectUtil.setFieldValue(testClass, privateField, "privateFieldVal");
+        Assert.isTrue(Objects.equals("privateFieldVal", testClass.getPrivateField()));
+
+    }
+
+
+    @Getter
+    static class TestClass {
+        private String privateField;
+        protected String field;
+
+        public TestClass() {
+            this.privateField = "privateField";
+            this.field = "field";
+        }
+    }
+
+    class TestSubClass extends TestClass {
+        private String subField;
+    }
+
 }