### Question:
DefaultObjectSerializer extends ObjectSerializer implements DaprObjectSerializer { @Override public byte[] serialize(Object o) throws IOException { return super.serialize(o); }  @Override byte[] serialize(Object o); @Override T deserialize(byte[] data, TypeRef<T> type); @Override String getContentType();  }### Answer:
@Test public void serializeStringObjectTest() { MyObjectTestToSerialize obj = new MyObjectTestToSerialize(); obj.setStringValue("A String"); obj.setIntValue(2147483647); obj.setBoolValue(true); obj.setCharValue('a'); obj.setByteValue((byte) 65); obj.setShortValue((short) 32767); obj.setLongValue(9223372036854775807L); obj.setFloatValue(1.0f); obj.setDoubleValue(1000.0); String expectedResult = "{\"stringValue\":\"A String\",\"intValue\":2147483647,\"boolValue\":true,\"charValue\":\"a\",\"byteValue\":65,\"shortValue\":32767,\"longValue\":9223372036854775807,\"floatValue\":1.0,\"doubleValue\":1000.0}"; String serializedValue; try { serializedValue = new String(SERIALIZER.serialize(obj)); assertEquals("FOUND:[[" + serializedValue + "]] \n but was EXPECTING: [[" + expectedResult + "]]", expectedResult, serializedValue); } catch (IOException exception) { fail(exception.getMessage()); } }
@Test public void serializeNullTest() { byte[] byteSerializedValue; try { byteSerializedValue = SERIALIZER.serialize(null); assertNull(byteSerializedValue); } catch (IOException exception) { fail(exception.getMessage()); } }