/*   Copyright 2004 The Apache Software Foundation
 *
 *   Licensed 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 xmlcursor.checkin;

import org.apache.xmlbeans.XmlCursor;
import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;
import static xmlcursor.common.BasicCursorTestCase.cur;

public class ToNextSelectionTest {
    @Test
    void testToNextSelectionMultipleReturns() throws Exception {
        String sXml = "<foo><b>0</b><b>1</b><b>2</b><b>3</b><b>4</b><b>5</b><b>6</b></foo>";
        try (XmlCursor m_xc = cur(sXml)) {
            m_xc.selectPath("$this//b");
            m_xc.toNextSelection();
            for (int i = 0; i < 6; i++) {
                assertEquals("" + i, m_xc.getTextValue());
                assertTrue(m_xc.toNextSelection());
            }
            assertEquals("6", m_xc.getTextValue());
            assertFalse(m_xc.toNextSelection());
        }
    }

    @Test
    void testToNextSelectionAfterClear() throws Exception {
        String sXml = "<foo><b>0</b><b>1</b><b>2</b><b>3</b><b>4</b><b>5</b><b>6</b></foo>";
        try (XmlCursor m_xc = cur(sXml)) {
            m_xc.selectPath("$this//b");
            m_xc.toNextSelection();
            for (int i = 0; i < 3; i++) {
                assertEquals("" + i, m_xc.getTextValue());
                assertTrue(m_xc.toNextSelection());
            }
            m_xc.clearSelections();
            assertEquals("3", m_xc.getTextValue());
            assertFalse(m_xc.toNextSelection());
        }
    }

    @Test
    void testToNextSelectionBeforeSelect() throws Exception {
        String sXml = "<foo><b>0</b><b>1</b><b>2</b><b>3</b><b>4</b><b>5</b><b>6</b></foo>";
        try (XmlCursor m_xc = cur(sXml)) {
            assertFalse(m_xc.toNextSelection());
            m_xc.selectPath("$this//b");
            m_xc.toNextSelection();
            for (int i = 0; i < 6; i++) {
                assertEquals("" + i, m_xc.getTextValue());
                assertTrue(m_xc.toNextSelection());
            }
            assertEquals("6", m_xc.getTextValue());
            assertFalse(m_xc.toNextSelection());
        }
    }

    @Test
    void testToNextSelectionOtherCursor() throws Exception {
        String sXml = "<foo><b>0</b><b>1</b><b>2</b><b>3</b><b>4</b><b>5</b><b>6</b></foo>";
        try (XmlCursor m_xc = cur(sXml);
             XmlCursor xc0 = m_xc.newCursor()) {
            m_xc.selectPath("$this//b");
            assertFalse(xc0.toNextSelection());
        }
    }

    @Test
    void testToNextSelectionTwoCursorsDifferentSelections() throws Exception {
        String sXml = "<foo><a>X</a><b>0</b><a>Y</a><b>1</b><a>Z</a><b>2</b></foo>";
        try (XmlCursor m_xc = cur(sXml);
             XmlCursor xc0 = m_xc.newCursor()) {
            xc0.selectPath("$this//a");
            xc0.toNextSelection();
            assertEquals(3, xc0.getSelectionCount());
            m_xc.selectPath("$this//b");
            m_xc.toNextSelection();
            assertEquals(3, m_xc.getSelectionCount());
            assertTrue(xc0.toNextSelection());
            assertEquals("Y", xc0.getTextValue());
            assertTrue(m_xc.toNextSelection());
            assertEquals("1", m_xc.getTextValue());
        }
    }

    @Test
    void testToNextSelectionTwoCursorsSameSelections() throws Exception {
        String sXml = "<foo><a>X</a><b>0</b><a>Y</a><b>1</b><a>Z</a><b>2</b></foo>";
        try (XmlCursor m_xc = cur(sXml);
             XmlCursor xc0 = m_xc.newCursor()) {
            xc0.selectPath("$this//b");
            xc0.toNextSelection();
            assertEquals(3, xc0.getSelectionCount());
            m_xc.selectPath("$this//b");
            m_xc.toNextSelection();
            assertEquals(3, m_xc.getSelectionCount());
            assertTrue(xc0.toNextSelection());
            assertEquals("1", xc0.getTextValue());
            assertTrue(m_xc.toNextSelection());
            assertEquals("1", m_xc.getTextValue());
            assertTrue(xc0.toNextSelection());
            assertEquals("2", xc0.getTextValue());
            assertTrue(m_xc.toNextSelection());
            assertEquals("2", m_xc.getTextValue());
            assertFalse(xc0.toNextSelection());
            assertFalse(m_xc.toNextSelection());
        }
    }
}