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package com.fasterxml.jackson.databind.convert;
import java.util.*;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.cfg.CoercionAction;
import com.fasterxml.jackson.databind.cfg.CoercionInputShape;
public class CoerceContainersTest extends BaseMapTest
{
private final String JSON_EMPTY = quote("");
private final ObjectMapper VANILLA_MAPPER = sharedMapper();
private final ObjectMapper COERCING_MAPPER = newJsonMapper();
{
COERCING_MAPPER.coercionConfigDefaults().setCoercion(CoercionInputShape.EmptyString, CoercionAction.AsEmpty);
}
/*
/********************************************************
/* Tests for collections
/********************************************************
*/
public void testScalarCollections() throws Exception
{
final JavaType listType = VANILLA_MAPPER.getTypeFactory()
.constructType(new TypeReference<List<Double>>() { });
_verifyNoCoercion(listType);
List<Double> result = _readWithCoercion(listType);
assertNotNull(result);
assertEquals(0, result.size());
}
public void testStringCollections() throws Exception
{
final JavaType listType = VANILLA_MAPPER.getTypeFactory()
.constructType(new TypeReference<List<String>>() { });
_verifyNoCoercion(listType);
List<String> result = _readWithCoercion(listType);
assertNotNull(result);
assertEquals(0, result.size());
}
/*
/********************************************************
/* Tests for Maps
/********************************************************
*/
public void testScalarMap() throws Exception
{
final JavaType mapType = VANILLA_MAPPER.getTypeFactory()
.constructType(new TypeReference<Map<Long, Boolean>>() { });
_verifyNoCoercion(mapType);
Map<?,?> result = _readWithCoercion(mapType);
assertNotNull(result);
assertEquals(0, result.size());
}
public void testEnumMap() throws Exception
{
final JavaType mapType = VANILLA_MAPPER.getTypeFactory()
.constructType(new TypeReference<EnumMap<ABC, Boolean>>() { });
_verifyNoCoercion(mapType);
Map<?,?> result = _readWithCoercion(mapType);
assertNotNull(result);
assertEquals(0, result.size());
}
/*
/********************************************************
/* Tests for arrays
/********************************************************
*/
public void testObjectArray() throws Exception
{
final JavaType arrayType = VANILLA_MAPPER.getTypeFactory()
.constructType(new TypeReference<Object[]>() { });
_verifyNoCoercion(arrayType);
Object[] result = _readWithCoercion(arrayType);
assertNotNull(result);
assertEquals(0, result.length);
}
public void testStringArray() throws Exception
{
final JavaType arrayType = VANILLA_MAPPER.getTypeFactory()
.constructType(new TypeReference<String[]>() { });
_verifyNoCoercion(arrayType);
String[] result = _readWithCoercion(arrayType);
assertNotNull(result);
assertEquals(0, result.length);
}
public void testBooleanArray() throws Exception
{
_verifyNoCoercion(boolean[].class);
boolean[] result = _readWithCoercion(boolean[].class);
assertNotNull(result);
assertEquals(0, result.length);
}
public void testIntArray() throws Exception
{
_verifyNoCoercion(int[].class);
int[] result = _readWithCoercion(int[].class);
assertNotNull(result);
assertEquals(0, result.length);
}
public void testLongArray() throws Exception
{
_verifyNoCoercion(long[].class);
long[] result = _readWithCoercion(long[].class);
assertNotNull(result);
assertEquals(0, result.length);
}
public void testFloatArray() throws Exception
{
_verifyNoCoercion(float[].class);
float[] result = _readWithCoercion(float[].class);
assertNotNull(result);
assertEquals(0, result.length);
}
public void testDoubleArray() throws Exception
{
_verifyNoCoercion(double[].class);
double[] result = _readWithCoercion(double[].class);
assertNotNull(result);
assertEquals(0, result.length);
}
/*
/********************************************************
/* Helper methods
/********************************************************
*/
private void _verifyNoCoercion(Class<?> targetType) throws Exception {
_verifyNoCoercion(VANILLA_MAPPER.constructType(targetType));
}
private void _verifyNoCoercion(JavaType targetType) throws Exception {
try {
VANILLA_MAPPER.readerFor(targetType).readValue(JSON_EMPTY);
fail("Should not pass");
} catch (Exception e) {
verifyException(e, "Cannot deserialize value of type");
verifyException(e, "from empty String");
}
}
private <T> T _readWithCoercion(Class<?> targetType) throws Exception {
return COERCING_MAPPER.readerFor(targetType).readValue(JSON_EMPTY);
}
private <T> T _readWithCoercion(JavaType targetType) throws Exception {
return COERCING_MAPPER.readerFor(targetType).readValue(JSON_EMPTY);
}
}
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