@@ -0,0 +1,566 @@
+package com.fasterxml.jackson.failing;%0A%0Aimport com.fasterxml.jackson.annotation.*;%0Aimport com.fasterxml.jackson.databind.*;%0A%0Apublic class TestObjectId370 extends BaseMapTest%0A%7B%0A    @JsonIdentityInfo(generator=ObjectIdGenerators.IntSequenceGenerator.class, property=%22@id%22)%0A    public static class EmptyObject %7B%0A    %7D%0A%0A    public void testEmptyObjectWithId() throws Exception%0A    %7B%0A        final ObjectMapper mapper = new ObjectMapper();%0A        String json = mapper.writeValueAsString(new EmptyObject());%0A        assertEquals(aposToQuotes(%22%7B'@id':1%7D%22), json);%0A    %7D%0A%7D%0A

Add a unit test for #370