Commons Beanutils example source code file (ArrayConverterTestCase.java)
The Commons Beanutils ArrayConverterTestCase.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.converters;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Locale;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Test Case for the ArrayConverter class.
*
* @version $Revision: 745078 $ $Date: 2009-02-17 14:03:10 +0000 (Tue, 17 Feb 2009) $
*/
public class ArrayConverterTestCase extends TestCase {
/**
* Construct a new Array Converter test case.
* @param name Test Name
*/
public ArrayConverterTestCase(String name) {
super(name);
}
// ------------------------------------------------------------------------
/**
* Create Test Suite
* @return test suite
*/
public static TestSuite suite() {
return new TestSuite(ArrayConverterTestCase.class);
}
/** Set Up */
public void setUp() throws Exception {
}
/** Tear Down */
public void tearDown() throws Exception {
}
// ------------------------------------------------------------------------
/**
* Test Converting using the IntegerConverter as the component Converter
*/
public void testComponentIntegerConverter() {
IntegerConverter intConverter = new IntegerConverter(new Integer(0));
intConverter.setPattern("#,###");
intConverter.setLocale(Locale.US);
ArrayConverter arrayConverter = new ArrayConverter(int[].class, intConverter, 0);
arrayConverter.setAllowedChars(new char[] {',', '-'});
arrayConverter.setDelimiter(';');
// Expected results
int[] intArray = new int[] {1111, 2222, 3333, 4444};
String stringA = "1,111; 2,222; 3,333; 4,444";
String stringB = intArray[0]+ ";" + intArray[1] + ";" + intArray[2] + ";" +intArray[3];
String[] strArray = new String[] {""+intArray[0], ""+intArray[1], ""+intArray[2], ""+intArray[3]};
long[] longArray = new long[] {intArray[0], intArray[1], intArray[2], intArray[3]};
Long[] LONGArray = new Long[] {new Long(intArray[0]), new Long(intArray[1]), new Long(intArray[2]), new Long(intArray[3])};
Integer[] IntegerArray = new Integer[] {new Integer(intArray[0]), new Integer(intArray[1]), new Integer(intArray[2]), new Integer(intArray[3])};
ArrayList strList = new ArrayList();
ArrayList longList = new ArrayList();
for (int i = 0; i < strArray.length; i++) {
strList.add(strArray[i]);
longList.add(LONGArray[i]);
}
String msg = null;
// String --> int[]
try {
msg = "String --> int[]";
checkArray(msg, intArray, arrayConverter.convert(int[].class, stringA));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// String --> int[] (with braces)
try {
msg = "String --> Integer[] (with braces)";
checkArray(msg, IntegerArray, arrayConverter.convert(Integer[].class, "{" + stringA + "}"));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// String[] --> int[]
try {
msg = "String[] --> int[]";
checkArray(msg, intArray, arrayConverter.convert(int[].class, strArray));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// String[] --> Integer[]
try {
msg = "String[] --> Integer[]";
checkArray(msg, IntegerArray, arrayConverter.convert(Integer[].class, strArray));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// long[] --> int[]
try {
msg = "long[] --> int[]";
checkArray(msg, intArray, arrayConverter.convert(int[].class, longArray));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Long --> int[]
try {
msg = "Long --> int[]";
checkArray(msg, new int[] {LONGArray[0].intValue()}, arrayConverter.convert(int[].class, LONGArray[0]));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// LONG[] --> int[]
try {
msg = "LONG[] --> int[]";
checkArray(msg, intArray, arrayConverter.convert(int[].class, LONGArray));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Long --> String
try {
msg = "Long --> String";
assertEquals(msg, LONGArray[0] + "", arrayConverter.convert(String.class, LONGArray[0]));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// LONG[] --> String (first)
try {
msg = "LONG[] --> String (first)";
assertEquals(msg, LONGArray[0] + "", arrayConverter.convert(String.class, LONGArray));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// LONG[] --> String (all)
try {
msg = "LONG[] --> String (all)";
arrayConverter.setOnlyFirstToString(false);
assertEquals(msg, stringB, arrayConverter.convert(String.class, LONGArray));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Collection of Long --> String
try {
msg = "Collection of Long --> String";
assertEquals(msg, stringB, arrayConverter.convert(String.class, longList));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// LONG[] --> String[]
try {
msg = "long[] --> String[]";
checkArray(msg, strArray, arrayConverter.convert(String[].class, LONGArray));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Collection of String --> Integer[]
try {
msg = "Collection of String --> Integer[]";
checkArray(msg, IntegerArray, arrayConverter.convert(Integer[].class, strList));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Collection of Long --> int[]
try {
msg = "Collection of Long --> int[]";
checkArray(msg, intArray, arrayConverter.convert(int[].class, longList));
} catch (Exception e) {
fail(msg + " failed " + e);
}
}
/**
* Test Converting a String[] to integer array (with leading/trailing whitespace)
*/
public void testStringArrayToNumber() {
// Configure Converter
IntegerConverter intConverter = new IntegerConverter();
ArrayConverter arrayConverter = new ArrayConverter(int[].class, intConverter);
// Test Data
String[] array = new String[] {"10", " 11", "12 ", " 13 "};
ArrayList list = new ArrayList();
for (int i = 0; i < array.length; i++) {
list.add(array[i]);
}
// Expected results
String msg = null;
int[] expectedInt = new int[] {10, 11, 12, 13};
Integer[] expectedInteger = new Integer[] {new Integer(expectedInt[0]), new Integer(expectedInt[1]), new Integer(expectedInt[2]), new Integer(expectedInt[3])};
// Test String[] --> int[]
try {
msg = "String[] --> int[]";
checkArray(msg, expectedInt, arrayConverter.convert(int[].class, array));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Test String[] --> Integer[]
try {
msg = "String[] --> Integer[]";
checkArray(msg, expectedInteger, arrayConverter.convert(Integer[].class, array));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Test List --> int[]
try {
msg = "List --> int[]";
checkArray(msg, expectedInt, arrayConverter.convert(int[].class, list));
} catch (Exception e) {
fail(msg + " failed " + e);
}
// Test List --> Integer[]
try {
msg = "List --> Integer[]";
checkArray(msg, expectedInteger, arrayConverter.convert(Integer[].class, list));
} catch (Exception e) {
fail(msg + " failed " + e);
}
}
/**
* Test the Matrix!!!! (parses a String into a 2 dimensional integer array or matrix)
*/
public void testTheMatrix() {
// Test Date - create the Matrix!!
// Following String uses two delimiter:
// - comma (",") to separate individual numbers
// - semi-colon (";") to separate lists of numbers
String matrixString = "11,12,13 ; 21,22,23 ; 31,32,33 ; 41,42,43";
int[][] expected = new int[][] {new int[] {11, 12, 13},
new int[] {21, 22, 23},
new int[] {31, 32, 33},
new int[] {41, 42, 43}};
// Construct an Integer Converter
IntegerConverter integerConverter = new IntegerConverter();
// Construct an array Converter for an integer array (i.e. int[]) using
// an IntegerConverter as the element converter.
// N.B. Uses the default comma (i.e. ",") as the delimiter between individual numbers
ArrayConverter arrayConverter = new ArrayConverter(int[].class, integerConverter);
// Construct a "Matrix" Converter which converts arrays of integer arrays using
// the first (int[]) Converter as the element Converter.
// N.B. Uses a semi-colon (i.e. ";") as the delimiter to separate the different sets of numbers.
// Also the delimiter for the above array Converter needs to be added to this
// array Converter's "allowed characters"
ArrayConverter matrixConverter = new ArrayConverter(int[][].class, arrayConverter);
matrixConverter.setDelimiter(';');
matrixConverter.setAllowedChars(new char[] {','});
try {
// Do the Conversion
Object result = matrixConverter.convert(int[][].class, matrixString);
// Check it actually worked OK
assertEquals("Check int[][].class", int[][].class, result.getClass());
int[][] matrix = (int[][])result;
assertEquals("Check int[][] length", expected.length, matrix.length);
for (int i = 0; i < expected.length; i++) {
assertEquals("Check int[" + i + "] length", expected[i].length, matrix[i].length);
for (int j = 0; j < expected[i].length; j++) {
String label = "Matrix int[" + i + "," + j + "] element";
assertEquals(label, expected[i][j], matrix[i][j]);
// System.out.println(label + " = " + matrix[i][j]);
}
}
} catch (Exception e) {
fail("Matrix Conversion threw " + e);
}
}
/**
* Test Converting using the IntegerConverter as the component Converter
*/
public void testInvalidWithDefault() {
int[] zeroArray = new int[0];
int[] oneArray = new int[1];
IntegerConverter intConverter = new IntegerConverter();
assertEquals("Null Default", null, new ArrayConverter(int[].class, intConverter, -1).convert(int[].class, null));
checkArray("Zero Length", zeroArray, new ArrayConverter(int[].class, intConverter, 0).convert(int[].class, null));
checkArray("One Length", oneArray, new ArrayConverter(Integer[].class, intConverter, 1).convert(int[].class, null));
}
/**
* Test Empty String
*/
public void testEmptyString() {
int[] zeroArray = new int[0];
IntegerConverter intConverter = new IntegerConverter();
checkArray("Empty String", zeroArray, new ArrayConverter(int[].class, intConverter, -1).convert(int[].class, ""));
assertEquals("Default String", null, new ArrayConverter(int[].class, intConverter).convert(String.class, null));
}
/**
* Test Errors creating the converter
*/
public void testErrors() {
try {
new ArrayConverter(null, new DateConverter());
fail("Default Type missing - expected IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected result
}
try {
new ArrayConverter(Boolean.class, new DateConverter());
fail("Default Type not an array - expected IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected result
}
try {
new ArrayConverter(int[].class, null);
fail("Component Converter missing - expected IllegalArgumentException");
} catch (IllegalArgumentException e) {
// expected result
}
}
/**
* Test for BEANUTILS-302 - throwing a NPE when underscore used
*/
public void testUnderscore_BEANUTILS_302() {
String value = "first_value,second_value";
ArrayConverter converter = new ArrayConverter(String[].class, new StringConverter());
// test underscore not allowed (the default)
String[] result = (String[])converter.convert(String[].class, value);
assertNotNull("result.null", result);
assertEquals("result.length", 4, result.length);
assertEquals("result[0]", "first", result[0]);
assertEquals("result[1]", "value", result[1]);
assertEquals("result[2]", "second", result[2]);
assertEquals("result[3]", "value", result[3]);
// configure the converter to allow underscore
converter.setAllowedChars(new char[] {'.', '-', '_'});
// test underscore allowed
result = (String[])converter.convert(String[].class, value);
assertNotNull("result.null", result);
assertEquals("result.length", 2, result.length);
assertEquals("result[0]", "first_value", result[0]);
assertEquals("result[1]", "second_value", result[1]);
}
/**
* Check that two arrays are the same.
* @param msg Test prefix msg
* @param expected Expected Array value
* @param result Result array value
*/
private void checkArray(String msg, Object expected, Object result) {
assertNotNull(msg + " Expected Null", expected);
assertNotNull(msg + " Result Null", result);
assertTrue(msg + " Result not array", result.getClass().isArray());
assertTrue(msg + " Expected not array", expected.getClass().isArray());
int resultLth = Array.getLength(result);
assertEquals(msg + " Size", Array.getLength(expected), resultLth);
assertEquals(msg + " Type", expected.getClass(), result.getClass());
for (int i = 0; i < resultLth; i++) {
Object expectElement = Array.get(expected, i);
Object resultElement = Array.get(result, i);
assertEquals(msg + " Element " + i, expectElement, resultElement);
}
}
}
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