inheritancetest.java

xstream是一个把java object序列化成xml文件的开源库,轻便好用

package com.thoughtworks.acceptance;

import com.thoughtworks.acceptance.objects.OpenSourceSoftware;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;


public class InheritanceTest extends AbstractAcceptanceTest {
    public void testHandlesInheritanceHeirarchies() {
        OpenSourceSoftware openSourceSoftware = new OpenSourceSoftware("apache", "geronimo", "license");
        String xml =
                "<oss>\n" +
                "  <license>license</license>\n" +
                "  <vendor>apache</vendor>\n" +
                "  <name>geronimo</name>\n" +
                "</oss>";

        xstream.alias("oss", OpenSourceSoftware.class);
        assertBothWays(openSourceSoftware, xml);
    }

    public static class ParentClass {
        private String name;

        public ParentClass() {
        }

        public ParentClass(String name) {
            this.name = name;
        }

        public String getParentName() {
            return name;
        }
    }

    public static class ChildClass extends ParentClass {
        private String name;

        public ChildClass() {
        }

        public ChildClass(String parentName, String childName) {
            super(parentName);
            this.name = childName;
        }

        public String getChildName() {
            return name;
        }

        public String toString() {
            return getParentName() + "/" + getChildName();
        }

        public boolean equals(Object obj) {
            return toString().equals(obj.toString());
        }
    }

    public void testInheritanceHidingPrivateFieldOfSameName() {
        xstream.alias("parent", ParentClass.class);
        xstream.alias("child", ChildClass.class);

        ChildClass child = new ChildClass("PARENT", "CHILD");
        // sanity checks
        assertEquals("PARENT", child.getParentName());
        assertEquals("CHILD", child.getChildName());

        String expected = "" +
                "<child>\n" +
                "  <name>CHILD</name>\n" +
                "  <name defined-in=\"parent\">PARENT</name>\n" +
                "</child>";

        assertBothWays(child, expected);
    }

    public static class ParentA extends StandardObject {
        private List stuff = new ArrayList();

        public List getParentStuff() {
            return stuff;
        }
    }

    public static class ChildA extends ParentA {
        private Map stuff = new HashMap();

        public Map getChildStuff() {
            return stuff;
        }

        public boolean equals(Object obj) {
            ChildA a = (ChildA) obj;
            if (!getChildStuff().getClass().equals(a.getChildStuff().getClass())) {
                return false;
            }
            if (!getParentStuff().getClass().equals(a.getParentStuff().getClass())) {
                return false;
            }
            return getChildStuff().equals(a.getChildStuff())
                    && getParentStuff().equals(a.getParentStuff());
        }
    }

    public void testHiddenFieldsWithDifferentType() {
        xstream.alias("child-a", ChildA.class);
        xstream.alias("parent-a", ParentA.class);
        ChildA childA = new ChildA();
        childA.getChildStuff().put("hello", "world");
        childA.getParentStuff().add("woo");
        String expected = "" +
                "<child-a>\n" +
                "  <stuff>\n" +
                "    <entry>\n" +
                "      <string>hello</string>\n" +
                "      <string>world</string>\n" +
                "    </entry>\n" +
                "  </stuff>\n" +
                "  <stuff defined-in=\"parent-a\">\n" +
                "    <string>woo</string>\n" +
                "  </stuff>\n" +
                "</child-a>";
        assertBothWays(childA, expected);
    }
}