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Commons Beanutils example source code file (ConvertUtilsTestCase.java)

This example Commons Beanutils source code file (ConvertUtilsTestCase.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons Beanutils tags/keywords

boolean, boolean, byte, converter, convertutilsbean, float, jdbc, object, object, returned, returned, short, sql, standard, string, string, text, util

The Commons Beanutils ConvertUtilsTestCase.java source code

/*
 * 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.commons.beanutils;


import java.sql.Date;
import java.sql.Time;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Locale;
import org.apache.commons.beanutils.converters.DateConverter;
import junit.framework.TestCase;
import junit.framework.Test;
import junit.framework.TestSuite;


/**
 * <p>
 *  Test Case for the ConvertUtils class.
 * </p>
 *
 * @author Craig R. McClanahan
 * @version $Revision: 551047 $ $Date: 2007-06-27 06:34:15 +0100 (Wed, 27 Jun 2007) $
 */

public class ConvertUtilsTestCase extends TestCase {

    // ---------------------------------------------------- Instance Variables


    // ---------------------------------------------------------- Constructors


    /**
     * Construct a new instance of this test case.
     *
     * @param name Name of the test case
     */
    public ConvertUtilsTestCase(String name) {
        super(name);
    }


    // -------------------------------------------------- Overall Test Methods


    /**
     * Set up instance variables required by this test case.
     */
    public void setUp() {

        ConvertUtils.deregister();

    }


    /**
     * Return the tests included in this test suite.
     */
    public static Test suite() {
        return (new TestSuite(ConvertUtilsTestCase.class));
    }


    /**
     * Tear down instance variables required by this test case.
     */
    public void tearDown() {
        // No action required
    }


    // ------------------------------------------------ Individual Test Methods


    /**
     * Negative String to primitive integer array tests.
     */
    public void testNegativeIntegerArray() {

        Object value = null;
        int intArray[] = new int[0];

        value = ConvertUtils.convert((String) null, intArray.getClass());
        checkIntegerArray(value, intArray);
        value = ConvertUtils.convert("a", intArray.getClass());
        checkIntegerArray(value, intArray);
        value = ConvertUtils.convert("{ a }", intArray.getClass());
        checkIntegerArray(value, intArray);
        value = ConvertUtils.convert("1a3", intArray.getClass());
        checkIntegerArray(value, intArray);
        value = ConvertUtils.convert("{ 1a3 }", intArray.getClass());
        checkIntegerArray(value, intArray);
        value = ConvertUtils.convert("0,1a3", intArray.getClass());
        checkIntegerArray(value, intArray);
        value = ConvertUtils.convert("{ 0, 1a3 }", intArray.getClass());
        checkIntegerArray(value, intArray);


    }


    /**
     * Negative scalar conversion tests.  These rely on the standard
     * default value conversions in ConvertUtils.
     */
    public void testNegativeScalar() {

        Object value = null;

        value = ConvertUtils.convert("foo", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("foo", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("foo", Byte.TYPE);
        assertTrue(value instanceof Byte);
        assertEquals(((Byte) value).byteValue(), (byte) 0);

        value = ConvertUtils.convert("foo", Byte.class);
        assertTrue(value instanceof Byte);
        assertEquals(((Byte) value).byteValue(), (byte) 0);

        try {
            value = ConvertUtils.convert
                ("org.apache.commons.beanutils.Undefined", Class.class);
            fail("Should have thrown conversion exception");
        } catch (ConversionException e) {
            // Expected result
        }

        value = ConvertUtils.convert("foo", Double.TYPE);
        assertTrue(value instanceof Double);
        assertEquals(((Double) value).doubleValue(), 0.0,
                     0.005);

        value = ConvertUtils.convert("foo", Double.class);
        assertTrue(value instanceof Double);
        assertEquals(((Double) value).doubleValue(), 0.0, 0.005);

        value = ConvertUtils.convert("foo", Float.TYPE);
        assertTrue(value instanceof Float);
        assertEquals(((Float) value).floatValue(), (float) 0.0,
                     (float) 0.005);

        value = ConvertUtils.convert("foo", Float.class);
        assertTrue(value instanceof Float);
        assertEquals(((Float) value).floatValue(), (float) 0.0,
                     (float) 0.005);

        value = ConvertUtils.convert("foo", Integer.TYPE);
        assertTrue(value instanceof Integer);
        assertEquals(((Integer) value).intValue(), 0);

        value = ConvertUtils.convert("foo", Integer.class);
        assertTrue(value instanceof Integer);
        assertEquals(((Integer) value).intValue(), 0);

        value = ConvertUtils.convert("foo", Byte.TYPE);
        assertTrue(value instanceof Byte);
        assertEquals(((Byte) value).byteValue(), (byte) 0);

        value = ConvertUtils.convert("foo", Long.class);
        assertTrue(value instanceof Long);
        assertEquals(((Long) value).longValue(), 0);

        value = ConvertUtils.convert("foo", Short.TYPE);
        assertTrue(value instanceof Short);
        assertEquals(((Short) value).shortValue(), (short) 0);

        value = ConvertUtils.convert("foo", Short.class);
        assertTrue(value instanceof Short);
        assertEquals(((Short) value).shortValue(), (short) 0);

    }


    /**
     * Negative String to String array tests.
     */
    public void testNegativeStringArray() {

        Object value = null;
        String stringArray[] = new String[0];

        value = ConvertUtils.convert((String) null, stringArray.getClass());
        checkStringArray(value, stringArray);

    }


    /**
     * Test conversion of object to string for arrays.
     */
    public void testObjectToStringArray() {

        int intArray0[] = new int[0];
        int intArray1[] = { 123 };
        int intArray2[] = { 123, 456 };
        String stringArray0[] = new String[0];
        String stringArray1[] = { "abc" };
        String stringArray2[] = { "abc", "def" };

        assertEquals("intArray0", null,
                     ConvertUtils.convert(intArray0));
        assertEquals("intArray1", "123",
                     ConvertUtils.convert(intArray1));
        assertEquals("intArray2", "123",
                     ConvertUtils.convert(intArray2));

        assertEquals("stringArray0", null,
                     ConvertUtils.convert(stringArray0));
        assertEquals("stringArray1", "abc",
                     ConvertUtils.convert(stringArray1));
        assertEquals("stringArray2", "abc",
                     ConvertUtils.convert(stringArray2));

    }


    /**
     * Test conversion of object to string for scalars.
     */
    public void testObjectToStringScalar() {

        assertEquals("Boolean->String", "false",
                     ConvertUtils.convert(Boolean.FALSE));
        assertEquals("Boolean->String", "true",
                     ConvertUtils.convert(Boolean.TRUE));
        assertEquals("Byte->String", "123",
                     ConvertUtils.convert(new Byte((byte) 123)));
        assertEquals("Character->String", "a",
                     ConvertUtils.convert(new Character('a')));
        assertEquals("Double->String", "123.0",
                     ConvertUtils.convert(new Double(123.0)));
        assertEquals("Float->String", "123.0",
                     ConvertUtils.convert(new Float((float) 123.0)));
        assertEquals("Integer->String", "123",
                     ConvertUtils.convert(new Integer(123)));
        assertEquals("Long->String", "123",
                     ConvertUtils.convert(new Long(123)));
        assertEquals("Short->String", "123",
                     ConvertUtils.convert(new Short((short) 123)));
        assertEquals("String->String", "abc",
                     ConvertUtils.convert("abc"));
        assertEquals("String->String null", null,
                     ConvertUtils.convert(null));

    }


    /**
     * Positive array conversion tests.
     */
    public void testPositiveArray() {

        String values1[] = { "10", "20", "30" };
        Object value = ConvertUtils.convert(values1, Integer.TYPE);
        int shape[] = new int[0];
        assertEquals(shape.getClass(), value.getClass());
        int results1[] = (int[]) value;
        assertEquals(results1[0], 10);
        assertEquals(results1[1], 20);
        assertEquals(results1[2], 30);

        String values2[] = { "100", "200", "300" };
        value = ConvertUtils.convert(values2, shape.getClass());
        assertEquals(shape.getClass(), value.getClass());
        int results2[] = (int[]) value;
        assertEquals(results2[0], 100);
        assertEquals(results2[1], 200);
        assertEquals(results2[2], 300);

    }


    /**
     * Positive String to primitive integer array tests.
     */
    public void testPositiveIntegerArray() {

        Object value = null;
        int intArray[] = new int[0];
        int intArray1[] = new int[] { 0 };
        int intArray2[] = new int[] { 0, 10 };

        value = ConvertUtils.convert("{  }", intArray.getClass());
        checkIntegerArray(value, intArray);

        value = ConvertUtils.convert("0", intArray.getClass());
        checkIntegerArray(value, intArray1);
        value = ConvertUtils.convert(" 0 ", intArray.getClass());
        checkIntegerArray(value, intArray1);
        value = ConvertUtils.convert("{ 0 }", intArray.getClass());
        checkIntegerArray(value, intArray1);

        value = ConvertUtils.convert("0,10", intArray.getClass());
        checkIntegerArray(value, intArray2);
        value = ConvertUtils.convert("0 10", intArray.getClass());
        checkIntegerArray(value, intArray2);
        value = ConvertUtils.convert("{0,10}", intArray.getClass());
        checkIntegerArray(value, intArray2);
        value = ConvertUtils.convert("{0 10}", intArray.getClass());
        checkIntegerArray(value, intArray2);
        value = ConvertUtils.convert("{ 0, 10 }", intArray.getClass());
        checkIntegerArray(value, intArray2);
        value = ConvertUtils.convert("{ 0 10 }", intArray.getClass());
        checkIntegerArray(value, intArray2);

    }


    /**
     * Positive scalar conversion tests.
     */
    public void testPositiveScalar() {

        Object value = null;

        value = ConvertUtils.convert("true", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("true", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("yes", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("yes", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("y", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("y", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("on", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("on", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), true);

        value = ConvertUtils.convert("false", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("false", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("no", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("no", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("n", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("n", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("off", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("off", Boolean.class);
        assertTrue(value instanceof Boolean);
        assertEquals(((Boolean) value).booleanValue(), false);

        value = ConvertUtils.convert("123", Byte.TYPE);
        assertTrue(value instanceof Byte);
        assertEquals(((Byte) value).byteValue(), (byte) 123);

        value = ConvertUtils.convert("123", Byte.class);
        assertTrue(value instanceof Byte);
        assertEquals(((Byte) value).byteValue(), (byte) 123);

        value = ConvertUtils.convert("a", Character.TYPE);
        assertTrue(value instanceof Character);
        assertEquals(((Character) value).charValue(), 'a');

        value = ConvertUtils.convert("a", Character.class);
        assertTrue(value instanceof Character);
        assertEquals(((Character) value).charValue(), 'a');

        value = ConvertUtils.convert("java.lang.String", Class.class);
        assertTrue(value instanceof Class);
        assertEquals(String.class, value);

        value = ConvertUtils.convert("123.456", Double.TYPE);
        assertTrue(value instanceof Double);
        assertEquals(((Double) value).doubleValue(), 123.456, 0.005);

        value = ConvertUtils.convert("123.456", Double.class);
        assertTrue(value instanceof Double);
        assertEquals(((Double) value).doubleValue(), 123.456, 0.005);

        value = ConvertUtils.convert("123.456", Float.TYPE);
        assertTrue(value instanceof Float);
        assertEquals(((Float) value).floatValue(), (float) 123.456,
                     (float) 0.005);

        value = ConvertUtils.convert("123.456", Float.class);
        assertTrue(value instanceof Float);
        assertEquals(((Float) value).floatValue(), (float) 123.456,
                     (float) 0.005);

        value = ConvertUtils.convert("123", Integer.TYPE);
        assertTrue(value instanceof Integer);
        assertEquals(((Integer) value).intValue(), 123);

        value = ConvertUtils.convert("123", Integer.class);
        assertTrue(value instanceof Integer);
        assertEquals(((Integer) value).intValue(), 123);

        value = ConvertUtils.convert("123", Long.TYPE);
        assertTrue(value instanceof Long);
        assertEquals(((Long) value).longValue(), 123);

        value = ConvertUtils.convert("123", Long.class);
        assertTrue(value instanceof Long);
        assertEquals(((Long) value).longValue(), 123);

        value = ConvertUtils.convert("123", Short.TYPE);
        assertTrue(value instanceof Short);
        assertEquals(((Short) value).shortValue(), (short) 123);

        value = ConvertUtils.convert("123", Short.class);
        assertTrue(value instanceof Short);
        assertEquals(((Short) value).shortValue(), (short) 123);

        String input = null;

        input = "2002-03-17";
        value = ConvertUtils.convert(input, Date.class);
        assertTrue(value instanceof Date);
        assertEquals(input, value.toString());

        input = "20:30:40";
        value = ConvertUtils.convert(input, Time.class);
        assertTrue(value instanceof Time);
        assertEquals(input, value.toString());

        input = "2002-03-17 20:30:40.0";
        value = ConvertUtils.convert(input, Timestamp.class);
        assertTrue(value instanceof Timestamp);
        assertEquals(input, value.toString());

    }


    /**
     * Positive String to String array tests.
     */
    public void testPositiveStringArray() {

        Object value = null;
        String stringArray[] = new String[0];
        String stringArray1[] = new String[]
            { "abc" };
        String stringArray2[] = new String[]
            { "abc", "de,f" };

        value = ConvertUtils.convert("", stringArray.getClass());
        checkStringArray(value, stringArray);
        value = ConvertUtils.convert(" ", stringArray.getClass());
        checkStringArray(value, stringArray);
        value = ConvertUtils.convert("{}", stringArray.getClass());
        checkStringArray(value, stringArray);
        value = ConvertUtils.convert("{  }", stringArray.getClass());
        checkStringArray(value, stringArray);

        value = ConvertUtils.convert("abc", stringArray.getClass());
        checkStringArray(value, stringArray1);
        value = ConvertUtils.convert("{abc}", stringArray.getClass());
        checkStringArray(value, stringArray1);
        value = ConvertUtils.convert("\"abc\"", stringArray.getClass());
        checkStringArray(value, stringArray1);
        value = ConvertUtils.convert("{\"abc\"}", stringArray.getClass());
        checkStringArray(value, stringArray1);
        value = ConvertUtils.convert("'abc'", stringArray.getClass());
        checkStringArray(value, stringArray1);
        value = ConvertUtils.convert("{'abc'}", stringArray.getClass());
        checkStringArray(value, stringArray1);

        value = ConvertUtils.convert("abc 'de,f'",
                                     stringArray.getClass());
        checkStringArray(value, stringArray2);
        value = ConvertUtils.convert("{abc, 'de,f'}",
                                     stringArray.getClass());
        checkStringArray(value, stringArray2);
        value = ConvertUtils.convert("\"abc\",\"de,f\"",
                                     stringArray.getClass());
        checkStringArray(value, stringArray2);
        value = ConvertUtils.convert("{\"abc\" 'de,f'}",
                                     stringArray.getClass());
        checkStringArray(value, stringArray2);
        value = ConvertUtils.convert("'abc' 'de,f'",
                                     stringArray.getClass());
        checkStringArray(value, stringArray2);
        value = ConvertUtils.convert("{'abc', \"de,f\"}",
                                     stringArray.getClass());
        checkStringArray(value, stringArray2);


    }

    public void testSeparateConvertInstances() throws Exception {
        ConvertUtilsBean utilsOne = new ConvertUtilsBean();
        ConvertUtilsBean utilsTwo = new ConvertUtilsBean();

        // make sure that the test work ok before anything's changed
        Object
        value = utilsOne.convert("true", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(
                    "Standard conversion failed (1)",
                    ((Boolean) value).booleanValue(),
                    true);

        value = utilsTwo.convert("true", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(
                    "Standard conversion failed (2)",
                    ((Boolean) value).booleanValue(),
                    true);

        // now register a test

        utilsOne.register(new ThrowExceptionConverter(), Boolean.TYPE);
        try {

            utilsOne.convert("true", Boolean.TYPE);
            fail("Register converter failed.");

        } catch (PassTestException e) { /* This shows that the registration has worked */ }

        try {
            // nothing should have changed
            value = utilsTwo.convert("true", Boolean.TYPE);
            assertTrue(value instanceof Boolean);
            assertEquals(
                        "Standard conversion failed (3)",
                        ((Boolean) value).booleanValue(),
                        true);

        } catch (PassTestException e) {
            // This is a failure since utilsTwo should still have
            // standard converters registered
            fail("Registering a converter for an instance should not effect another instance.");
        }

        // nothing we'll test deregister
        utilsOne.deregister();
        value = utilsOne.convert("true", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals("Instance deregister failed.", ((Boolean) value).booleanValue(), true);

        value = utilsTwo.convert("true", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(
                    "Standard conversion failed (4)",
                    ((Boolean) value).booleanValue(),
                    true);
    }

    public void testDeregisteringSingleConverter() throws Exception {
        // make sure that the test work ok before anything's changed
        Object
        value = ConvertUtils.convert("true", Boolean.TYPE);
        assertTrue(value instanceof Boolean);
        assertEquals(
                    "Standard conversion failed (1)",
                    ((Boolean) value).booleanValue(),
                    true);

        // we'll test deregister
        ConvertUtils.deregister(Boolean.TYPE);
        assertNull("Converter should be null",ConvertUtils.lookup(Boolean.TYPE));

    }

    public void testConvertToString() throws Exception {
        Converter dummyConverter = new Converter() {
            public Object convert(Class type, Object value) {
                return value;
            }
        };

        Converter fooConverter = new Converter() {
            public Object convert(Class type, Object value) {
                return "Foo-Converter";
            }
        };

        DateConverter dateConverter = new DateConverter();
        dateConverter.setLocale(Locale.US);

        ConvertUtilsBean utils = new ConvertUtilsBean();
        utils.register(dateConverter, java.util.Date.class);
        utils.register(fooConverter, String.class);

        // Convert using registerd DateConverter
        java.util.Date today = new java.util.Date();
        DateFormat fmt = new SimpleDateFormat("M/d/yy"); /* US Short Format */
        String expected = fmt.format(today);
        assertEquals("DateConverter M/d/yy", expected, utils.convert(today, String.class));
        
        // Date converter doesn't do String conversion - use String Converter
        utils.register(dummyConverter, java.util.Date.class);
        assertEquals("Date Converter doesn't do String conversion", "Foo-Converter", utils.convert(today, String.class));
        
        // No registered Date converter - use String Converter
        utils.deregister(java.util.Date.class);
        assertEquals("No registered Date converter", "Foo-Converter", utils.convert(today, String.class));
        
        // String Converter doesn't do Strings!!!
        utils.register(dummyConverter, String.class);
        assertEquals("String Converter doesn't do Strings!!!", today.toString(), utils.convert(today, String.class));
        
        // No registered Date or String converter - use Object's toString()
        utils.deregister(String.class);
        assertEquals("Object's toString()", today.toString(), utils.convert(today, String.class));
        
    }

    // -------------------------------------------------------- Private Methods


    private void checkIntegerArray(Object value, int intArray[]) {

        assertNotNull("Returned value is not null", value);
        assertEquals("Returned value is int[]",
                     intArray.getClass(), value.getClass());
        int results[] = (int[]) value;
        assertEquals("Returned array length", intArray.length, results.length);
        for (int i = 0; i < intArray.length; i++) {
            assertEquals("Returned array value " + i,
                         intArray[i], results[i]);
        }

    }


    private void checkStringArray(Object value, String stringArray[]) {

        assertNotNull("Returned value is not null", value);
        assertEquals("Returned value is String[]",
                     stringArray.getClass(), value.getClass());
        String results[] = (String[]) value;
        assertEquals("Returned array length",
                     stringArray.length, results.length);
        for (int i = 0; i < stringArray.length; i++) {
            assertEquals("Returned array value " + i,
                         stringArray[i], results[i]);
        }

    }


}

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