ObjectMapper#canSerialize(Object.class) returns false even though FAIL_ON_EMPTY_BEANS is disabled

[flexfrank]

Version: 2.5.x, 2.6.x

When FAIL_ON_EMPTY_BEANS is disabled, ObjectMapper#writeValueAsString(new Object()) succeeds.
However, ObjectMapper#canSerialize(Object.class) returns false.

ObjectMapper mapper = new ObjectMapper();
mapper.disable(SerializationFeature.FAIL_ON_EMPTY_BEANS);
System.err.println(mapper.canSerialize(Object.class));
System.err.println(mapper.writeValueAsString(new Object()));

false
{}

I suppose 152aabb caused this problem.

[flexfrank]

I figured out two possible solutions:
#979
#980

[cowtowncoder]

Did you run full unit test suite with both possible fixes? It would seem like changes could have side effects.

[flexfrank]

I ran mvn test and both pass all tests.

Results :

Tests run: 1478, Failures: 0, Errors: 0, Skipped: 0

[cowtowncoder]

Looks like there is bit of prior art wrt #703. But I think that mostly refers to case of "fail on empty" being true, whereas this is for it being false.