package com.fasterxml.jackson.dataformat.xml.misc;
import java.util.*;
import java.lang.reflect.Array;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.fasterxml.jackson.dataformat.xml.XmlTestBase;
/* NOTE: copied from jackson-databind (with some pruning)
*/
/**
* Conversion tests to ensure that standard ObjectMapper conversions
* work despite XmlMapper having to add XML-specific work-arounds.
*/
public class ArrayConversionsTest extends XmlTestBase
{
static class IntListWrapper {
public List<Integer> values;
}
static class IntArrayWrapper {
public int[] values;
public IntArrayWrapper() { }
public IntArrayWrapper(int[] v) { values = v; }
}
/*
/********************************************************
/* Test methods
/********************************************************
*/
public void testNullXform() throws Exception {
_testNullXform(xmlMapper(true));
_testNullXform(xmlMapper(false));
}
private void _testNullXform(ObjectMapper mapper) throws Exception
{
// when given null, null should be returned without conversion (Java null has no type)
assertNull(mapper.convertValue(null, Integer.class));
assertNull(mapper.convertValue(null, String.class));
assertNull(mapper.convertValue(null, byte[].class));
}
/**
* Tests to verify that primitive number arrays round-trip
* correctly, i.e. type -> type gives equal (although
* not necessarily same) output
*/
public void testArrayIdentityTransforms() throws Exception {
_testArrayIdentityTransforms(xmlMapper(true));
_testArrayIdentityTransforms(xmlMapper(false));
}
private void _testArrayIdentityTransforms(ObjectMapper mapper) throws Exception
{
// first integral types
// (note: byte[] is ok, even if it goes to base64 and back)
verifyByteArrayConversion(mapper, bytes(), byte[].class);
verifyShortArrayConversion(mapper, shorts(), short[].class);
verifyIntArrayConversion(mapper, ints(), int[].class);
verifyLongArrayConversion(mapper, longs(), long[].class);
// then primitive decimal types
verifyFloatArrayConversion(mapper, floats(), float[].class);
verifyDoubleArrayConversion(mapper, doubles(), float[].class);
}
public void testByteArrayFrom() throws Exception {
_testByteArrayFrom(xmlMapper(true));
_testByteArrayFrom(xmlMapper(false));
}
private void _testByteArrayFrom(ObjectMapper mapper) throws Exception
{
/* Note: byte arrays are tricky, since they are considered
* binary data primarily, not as array of numbers. Hence
* output will be base64 encoded...
*/
byte[] data = _convert(mapper, "c3VyZS4=", byte[].class);
byte[] exp = "sure.".getBytes("Ascii");
verifyIntegralArrays(exp, data, exp.length);
}
public void testShortArrayToX() throws Exception
{
final XmlMapper mapper = new XmlMapper();
short[] data = shorts();
verifyShortArrayConversion(mapper, data, byte[].class);
verifyShortArrayConversion(mapper, data, int[].class);
verifyShortArrayConversion(mapper, data, long[].class);
}
public void testIntArrayToX() throws Exception
{
final XmlMapper mapper = new XmlMapper();
int[] data = ints();
verifyIntArrayConversion(mapper, data, byte[].class);
verifyIntArrayConversion(mapper, data, short[].class);
verifyIntArrayConversion(mapper, data, long[].class);
List<Number> expNums = _numberList(data, data.length);
// Alas, due to type erasure, need to use TypeRef, not just class
List<Integer> actNums = mapper.convertValue(data, new TypeReference<List<Integer>>() {});
assertEquals(expNums, actNums);
}
public void testLongArrayToX() throws Exception
{
final XmlMapper mapper = new XmlMapper();
long[] data = longs();
verifyLongArrayConversion(mapper, data, byte[].class);
verifyLongArrayConversion(mapper, data, short[].class);
verifyLongArrayConversion(mapper, data, int[].class);
List<Number> expNums = _numberList(data, data.length);
List<Long> actNums = mapper.convertValue(data, new TypeReference<List<Long>>() {});
assertEquals(expNums, actNums);
}
public void testListToIntArray() throws Exception
{
_testListToIntArray(true);
_testListToIntArray(false);
}
private void _testListToIntArray(boolean wrap) throws Exception
{
final XmlMapper mapper = xmlMapper(wrap);
List<Integer> in = new ArrayList<Integer>();
in.add(1);
in.add(2);
in.add(3);
int[] out = mapper.convertValue(in, int[].class);
assertEquals(3, out.length);
for (int i = 0; i < out.length; ++i) {
assertEquals(i+1, out[i]);
}
}
public void testListAsProperty() throws Exception
{
_testListAsProperty(true);
_testListAsProperty(false);
}
private void _testListAsProperty(boolean wrap) throws Exception
{
final XmlMapper mapper = xmlMapper(wrap);
IntListWrapper mid = mapper.convertValue(new IntArrayWrapper(new int[] { 1, 2, 3}),
IntListWrapper.class);
assertNotNull(mid);
assertNotNull(mid.values);
assertEquals(3, mid.values.size());
IntArrayWrapper output = mapper.convertValue(mid, IntArrayWrapper.class);
assertEquals(3, output.values.length);
assertEquals(3, output.values[2]);
}
/*
/********************************************************
/* Helper methods
/********************************************************
*/
// note: all value need to be within byte range
private byte[] bytes() { return new byte[] { 1, -1, 0, 98, 127 }; }
private short[] shorts() { return new short[] { 1, -1, 0, 98, 127 }; }
private int[] ints() { return new int[] { 1, -1, 0, 98, 127 }; }
private long[] longs() { return new long[] { 1, -1, 0, 98, 127 }; }
// note: use values that are exact in binary
private double[] doubles() { return new double[] { 0.0, 0.25, -0.125, 10.5, 9875.0 }; }
private float[] floats() { return new float[] {
0.0f, 0.25f, -0.125f, 10.5f, 9875.0f };
}
private <T> void verifyByteArrayConversion(ObjectMapper mapper, byte[] data, Class<T> arrayType) {
T result = _convert(mapper, data, arrayType);
verifyIntegralArrays(data, result, data.length);
}
private <T> void verifyShortArrayConversion(ObjectMapper mapper, short[] data, Class<T> arrayType) {
T result = _convert(mapper, data, arrayType);
verifyIntegralArrays(data, result, data.length);
}
private <T> void verifyIntArrayConversion(ObjectMapper mapper, int[] data, Class<T> arrayType) {
T result = _convert(mapper, data, arrayType);
verifyIntegralArrays(data, result, data.length);
}
private <T> void verifyLongArrayConversion(ObjectMapper mapper, long[] data, Class<T> arrayType) {
T result = _convert(mapper, data, arrayType);
verifyIntegralArrays(data, result, data.length);
}
private <T> void verifyFloatArrayConversion(ObjectMapper mapper, float[] data, Class<T> arrayType) {
T result = _convert(mapper, data, arrayType);
verifyDoubleArrays(data, result, data.length);
}
private <T> void verifyDoubleArrayConversion(ObjectMapper mapper, double[] data, Class<T> arrayType) {
T result = _convert(mapper, data, arrayType);
verifyDoubleArrays(data, result, data.length);
}
private <T> T _convert(ObjectMapper mapper, Object input, Class<T> outputType)
{
// must be a primitive array, like "int[].class"
if (!outputType.isArray()) throw new IllegalArgumentException();
if (!outputType.getComponentType().isPrimitive()) throw new IllegalArgumentException();
T result = mapper.convertValue(input, outputType);
// sanity check first:
assertNotNull(result);
assertEquals(outputType, result.getClass());
return result;
}
private List<Number> _numberList(Object numberArray, int size)
{
ArrayList<Number> result = new ArrayList<Number>(size);
for (int i = 0; i < size; ++i) {
result.add((Number) Array.get(numberArray, i));
}
return result;
}
/**
* Helper method for checking that given collections contain integral Numbers
* that essentially contain same values in same order
*/
private void verifyIntegralArrays(Object inputArray, Object outputArray, int size)
{
for (int i = 0; i < size; ++i) {
Number n1 = (Number) Array.get(inputArray, i);
Number n2 = (Number) Array.get(outputArray, i);
double value1 = ((Number) n1).longValue();
double value2 = ((Number) n2).longValue();
assertEquals("Entry #"+i+"/"+size+" not equal", value1, value2);
}
}
private void verifyDoubleArrays(Object inputArray, Object outputArray, int size)
{
for (int i = 0; i < size; ++i) {
Number n1 = (Number) Array.get(inputArray, i);
Number n2 = (Number) Array.get(outputArray, i);
double value1 = ((Number) n1).doubleValue();
double value2 = ((Number) n2).doubleValue();
assertEquals("Entry #"+i+"/"+size+" not equal", value1, value2);
}
}
}