Qi-Cui opened a new pull request, #295:
URL: https://github.com/apache/gora/pull/295
### Description
Test
`org.apache.gora.mongodb.filters.DefaultFactoryTest#testCreateFilter_list_2`
occasionally fails when the order of fields in the `JSONObject` objects is
different. The root cause is that current test compares the two `JSONObject`
objects by converting them to strings, which is order-sensitive, and could fail
when field order differs.
### Steps to reproduce
Run `mvn test -pl gora-mongodb
-Dtest=org.apache.gora.mongodb.filters.DefaultFactoryTest#testCreateFilter_list_2
`.
### Expected Behaviour
This test should pass consistently, regardless of the order of fields in the
`JSONObject`, as long as the content remains the same.
### Actual Behaviour
The test occasionally fails, raise an exception with error message:
> DefaultFactoryTest.testCreateFilter_list_2:119
expected:<{"[h.C·T":"text/html","url":"http://www.example.com]"}> but
was:<{"[url":"http://www.example.com","h.C·T":"text/html]"}>
### Proposed Solution
The solution is to parse both expected and actual `JSONObject` into
`JsonNode`, rather than comparing them as strings. Then use Jackson's
`ObjectMapper` to compare the two `JsonNode` objects, which ignores the order
of the keys.
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