SiLeBAT/FSK-Lab

package de.bund.bfr.knime.pmm.common;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;

import org.jdom2.Element;
import org.junit.Test;

@SuppressWarnings("static-method")
public class XmlHelperTest {

    @Test
    public void testGetString() {

        // null Element
        assertNull(XmlHelper.getString(null, ""));

        // Element without attribute
        final Element element = new Element("element");
        assertNull(XmlHelper.getString(element, ""));

        // Element with empty attribute
        element.setAttribute("drink", "");
        assertNull(XmlHelper.getString(element, "drink"));

        // Element with non empty attribute
        element.setAttribute("drink", "martini");
        assertEquals("martini", XmlHelper.getString(element, "drink"));
    }

    @Test
    public void testGetInt() {

        // null Element
        assertNull(XmlHelper.getInt(null, ""));

        // Element without attribute
        final Element element = new Element("element");
        assertNull(XmlHelper.getInt(element, ""));

        // Element with empty attribute
        element.setAttribute("age", "");
        assertNull(XmlHelper.getInt(element, "age"));

        // Element with non empty attribute
        element.setAttribute("age", "18");
        assertEquals(18, XmlHelper.getInt(element, "age").intValue());

        // Element with non empty attribute that is not an integer
        element.setAttribute("age", "not a number");
        assertNull(XmlHelper.getInt(element, "age"));
    }

    @Test
    public void testGetDouble() {

        // null Element
        assertNull(XmlHelper.getDouble(null, ""));

        // Element without attribute
        final Element element = new Element("element");
        assertNull(XmlHelper.getDouble(element, "price"));

        // Element with empty attribute
        element.setAttribute("price", "");
        assertNull(XmlHelper.getDouble(element, "price"));

        // Element with non empty attribute
        element.setAttribute("price", "0.99");
        assertEquals(0.99, XmlHelper.getDouble(element, "price"), 0.0);

        // Element with non empty attribute that is not a double
        element.setAttribute("price", "not a number");
        assertNull(XmlHelper.getDouble(element, "price"));
    }

    @Test
    public void testGetBoolean() {

        // null Element
        assertNull(XmlHelper.getBoolean(null, ""));

        // Element without attribute
        final Element element = new Element("element");
        assertNull(XmlHelper.getBoolean(element, "available"));

        // Element with empty attribute
        element.setAttribute("available", "");
        assertNull(XmlHelper.getBoolean(element, "available"));

        // Element with non empty attribute
        element.setAttribute("available", "false");
        assertFalse(XmlHelper.getBoolean(element, "available"));
    }

    @Test
    public void testGetNonNull() {
        assertTrue(XmlHelper.getNonNull(null).isEmpty());
        assertTrue(XmlHelper.getNonNull(Double.NaN).isEmpty());
        assertEquals("hello", XmlHelper.getNonNull("hello"));
    }
}