/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.harmony.prefs.tests.java.util.prefs;

import dalvik.annotation.TestTargetClass;
import dalvik.annotation.TestTargets;
import dalvik.annotation.TestLevel;
import dalvik.annotation.TestTargetNew;

import java.io.NotSerializableException;
import java.util.prefs.AbstractPreferences;
import java.util.prefs.BackingStoreException;
import java.util.prefs.NodeChangeEvent;
import java.util.prefs.Preferences;

import junit.framework.TestCase;

import org.apache.harmony.testframework.serialization.SerializationTest;

/**
 * 
 */
@TestTargetClass(NodeChangeEvent.class)
public class NodeChangeEventTest extends TestCase {

    NodeChangeEvent event;

    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "NodeChangeEvent",
        args = {java.util.prefs.Preferences.class, java.util.prefs.Preferences.class}
    )
    public void testConstructor() {
        event = new NodeChangeEvent(Preferences.systemRoot(), Preferences
                .userRoot());
        assertSame(Preferences.systemRoot(), event.getParent());
        assertSame(Preferences.userRoot(), event.getChild());
        assertSame(Preferences.systemRoot(), event.getSource());
    }

    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "",
        method = "NodeChangeEvent",
        args = {java.util.prefs.Preferences.class, java.util.prefs.Preferences.class}
    )
    public void testConstructorNullParam() {
        try {
            event = new NodeChangeEvent(null, Preferences.userRoot());
            fail();
        } catch (IllegalArgumentException e) {
        }

        event = new NodeChangeEvent(Preferences.systemRoot(), null);
        assertSame(Preferences.systemRoot(), event.getParent());
        assertNull(event.getChild());
        assertSame(Preferences.systemRoot(), event.getSource());
    }

    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "Verifies serialization",
        method = "!Serialization",
        args = {}
    )
    public void testSerialization() throws Exception {

        event = new NodeChangeEvent(Preferences.systemRoot(), null);

        try {
            SerializationTest.copySerializable(event);
            fail("No expected NotSerializableException");
        } catch (NotSerializableException e) {
        }
    }

    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "Test is correct, functionality checked in separate Mock class.",
        method = "getChild",
        args = {}
    )
    public void testGetChild() throws BackingStoreException {

        AbstractPreferences parent = (AbstractPreferences) Preferences
                .userNodeForPackage(Preferences.class);

        AbstractPreferences pref = (AbstractPreferences) parent.node("mock");

        MockNodeChangeListener nl = new MockNodeChangeListener(
                MockNodeChangeListener.TEST_GET_CHILD);
        try {
            pref.addNodeChangeListener(nl);
            Preferences child1 = pref.node("mock1");
            nl.waitForEvent();
            assertEquals(1, nl.getAdded());
            assertTrue(nl.getAddResult());
            nl.reset();
            child1.removeNode();
            nl.waitForEvent();
            assertEquals(1, nl.getRemoved());
            assertTrue(nl.getRemoveResult());
            nl.reset();
        } finally {
            pref.removeNodeChangeListener(nl);
        }
    }
    
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "Test is correct, functionality checked in separate Mock class.",
        method = "getParent",
        args = {}
    )
    public void testGetParent() throws BackingStoreException {

        AbstractPreferences parent = (AbstractPreferences) Preferences
                .userNodeForPackage(Preferences.class);

        AbstractPreferences pref = (AbstractPreferences) parent.node("mock");

        MockNodeChangeListener nl = new MockNodeChangeListener(
                MockNodeChangeListener.TEST_GET_CHILD);
        try {
            pref.addNodeChangeListener(nl);
            Preferences child1 = pref.node("mock1");
            nl.waitForEvent();
            assertEquals(1, nl.getAdded());
            assertTrue(nl.getAddResult());
            nl.reset();
            child1.removeNode();
            nl.waitForEvent();
            assertEquals(1, nl.getRemoved());
            assertTrue(nl.getRemoveResult());
            nl.reset();
        } finally {
            pref.removeNodeChangeListener(nl);
        }
    }
}
