org.force66.beantester.utils.InstantiationUtilsTest.java Source code

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Here is the source code for org.force66.beantester.utils.InstantiationUtilsTest.java

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/*
 * This software is licensed under the Apache License, Version 2.0
 * (the "License") agreement; 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.force66.beantester.utils;

import java.util.Map;

import javax.xml.datatype.XMLGregorianCalendar;

import org.apache.commons.lang3.reflect.FieldUtils;
import org.force66.beantester.valuegens.ValueGenerator;
import org.force66.beantester.valuegens.ValueGeneratorFactory;
import org.junit.Assert;
import org.junit.Test;

public class InstantiationUtilsTest {

    @Test
    public void testBasic() {
        Object obj = InstantiationUtils.safeNewInstance(Object.class);
        Assert.assertTrue(obj != null);

        try {
            InstantiationUtils.safeNewInstance(XMLGregorianCalendar.class);
            Assert.fail();
        } catch (Exception e) {
            Assert.assertTrue(e.getMessage() != null);
            Assert.assertTrue(e.getMessage().contains("Failed to instantiate bean using newInstance()"));
        }

        Assert.assertTrue(new InstantiationUtils() != null);
    }

    @Test
    public void testConstructorArgs() {
        Integer obj = (Integer) InstantiationUtils.safeNewInstance(Integer.class, new Object[] { "0" });
        Assert.assertTrue(obj != null);
        Assert.assertTrue(obj.toString().equals("0"));
    }

    @Test
    public void testXewXMLGregorianCalendar() {
        XMLGregorianCalendar xc = InstantiationUtils.newXMLGregorianCalendar();
        Assert.assertTrue(xc != null);
    }

    @Test
    public void testFindPublicConstructor() {
        Assert.assertTrue(InstantiationUtils.findPublicConstructor(Math.class) == null);
    }

    @Test
    public void testInstantiationWithFactory() throws Exception {
        ValueGeneratorFactory factory = new ValueGeneratorFactory();
        try {
            InstantiationUtils.safeNewInstance(factory, Math.class);
            Assert.fail();
        } catch (Exception e) {
            Assert.assertTrue(e.getMessage().contains("No public constructor found"));
            Assert.assertTrue(e.getMessage().contains(Math.class.getName()));
        }

        try {
            InstantiationUtils.safeNewInstance(factory, TestBean.class);
            Assert.fail();
        } catch (Exception e) {
            Assert.assertTrue(e.getMessage().contains("No public constructor found"));
            Assert.assertTrue(e.getMessage().contains(TestField.class.getName()));
        }

        Map<Class<?>, ValueGenerator<?>> registeredGeneratorMap = (Map<Class<?>, ValueGenerator<?>>) FieldUtils
                .readField(factory, "registeredGeneratorMap", true);
        registeredGeneratorMap.put(String.class, null);

        InstantiationUtils.safeNewInstance(factory, TestBean2.class);

    }

    public static class TestBean {

        public TestBean(TestField field) {
        }

    }

    public static class TestField {
        private TestField() {
        }
    }

    public static class TestBean2 {
        public TestBean2(String field) {
        }
    }

}