Create a JsonProcessingException

I came across this issue today also. The simplest and cleanest solution I came up with was to create and throw a mock JsonProcessingException

when(mapper.writeValueAsString(any(Object.class)))
    .thenThrow(mock(JsonProcessingException.class));

How about throwing one of the known direct subclasses instead?

for v1.0

Direct Known Subclasses:
JsonGenerationException, JsonMappingException, JsonParseException

for v2.0

Direct Known Subclasses:
JsonGenerationException, JsonParseException

This one worked for me which allowed to throw JsonProcessingException itself

doThrow(JsonProcessingException.class).when(mockedObjectMapper).writeValueAsString(Mockito.any());

how about you create an anonymous exception of type JsonProcessingException

when(mapper.writeValueAsString(any(Object.class))).thenThrow(new JsonProcessingException("Error"){});

The {} braces does the trick. This is much better since it is not confusing to the reader of the test code.

Related