// [JACKSON-212] public void testToStringEnumWithEnumMap() throws Exception { ObjectMapper m = new ObjectMapper(); m.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true); EnumMap<LowerCaseEnum, String> enums = new EnumMap<LowerCaseEnum, String>(LowerCaseEnum.class); enums.put(LowerCaseEnum.C, "value"); assertEquals("{\"c\":\"value\"}", m.writeValueAsString(enums)); }
// 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()); }
// [JACKSON-212] public void testToStringEnum() throws Exception { ObjectMapper m = new ObjectMapper(); m.configure(SerializationFeature.WRITE_ENUMS_USING_TO_STRING, true); assertEquals("\"b\"", m.writeValueAsString(LowerCaseEnum.B)); // [databind#749] but should also be able to dynamically disable assertEquals( "\"B\"", m.writer() .without(SerializationFeature.WRITE_ENUMS_USING_TO_STRING) .writeValueAsString(LowerCaseEnum.B)); }
/** 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"); } }