// for [JACKSON-652]
// @since 1.9
public void testUntypedWithJsonArrays() throws Exception {
// by default we get:
Object ob = MAPPER.readValue("[1]", Object.class);
assertTrue(ob instanceof List<?>);
// but can change to produce Object[]:
MAPPER.configure(DeserializationFeature.USE_JAVA_ARRAY_FOR_JSON_ARRAY, true);
ob = MAPPER.readValue("[1]", Object.class);
assertEquals(Object[].class, ob.getClass());
}
/** Test for [JACKSON-420] (add DeserializationConfig.FAIL_ON_NULL_FOR_PRIMITIVES) */
public void testNullForPrimitives() throws IOException {
// by default, ok to rely on defaults
PrimitivesBean bean =
MAPPER.readValue(
"{\"intValue\":null, \"booleanValue\":null, \"doubleValue\":null}",
PrimitivesBean.class);
assertNotNull(bean);
assertEquals(0, bean.intValue);
assertEquals(false, bean.booleanValue);
assertEquals(0.0, bean.doubleValue);
bean =
MAPPER.readValue(
"{\"byteValue\":null, \"longValue\":null, \"floatValue\":null}", PrimitivesBean.class);
assertNotNull(bean);
assertEquals((byte) 0, bean.byteValue);
assertEquals(0L, bean.longValue);
assertEquals(0.0f, bean.floatValue);
// but not when enabled
final ObjectMapper mapper2 = new ObjectMapper();
mapper2.configure(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES, true);
// boolean
try {
mapper2.readValue("{\"booleanValue\":null}", PrimitivesBean.class);
fail("Expected failure for boolean + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type boolean");
}
// byte/char/short/int/long
try {
mapper2.readValue("{\"byteValue\":null}", PrimitivesBean.class);
fail("Expected failure for byte + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type byte");
}
try {
mapper2.readValue("{\"charValue\":null}", PrimitivesBean.class);
fail("Expected failure for char + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type char");
}
try {
mapper2.readValue("{\"shortValue\":null}", PrimitivesBean.class);
fail("Expected failure for short + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type short");
}
try {
mapper2.readValue("{\"intValue\":null}", PrimitivesBean.class);
fail("Expected failure for int + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type int");
}
try {
mapper2.readValue("{\"longValue\":null}", PrimitivesBean.class);
fail("Expected failure for long + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type long");
}
// float/double
try {
mapper2.readValue("{\"floatValue\":null}", PrimitivesBean.class);
fail("Expected failure for float + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type float");
}
try {
mapper2.readValue("{\"doubleValue\":null}", PrimitivesBean.class);
fail("Expected failure for double + null");
} catch (JsonMappingException e) {
verifyException(e, "Can not map JSON null into type double");
}
}