palantir / palantir/conjure-java-runtime

Retrofit clients should treat HTTP 204 as empty

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bug
Dominant language
Java
Stars
95
Forks
96
Avg merge
3h 38m
Merged PRs (30d)
33

Description

Our jax-rs clients already interpret a http 204 as Optional.empty, but the retrofit clients return it as null!

    @Test
    public void retrofit2_client_can_retrieve_an_optional_empty() throws Exception {
        assertThat(client.optionalEmpty(AuthHeader.valueOf("authHeader")).execute().body())
                .isEqualTo(Optional.empty());
    }
org.junit.ComparisonFailure: 
Expected :Optional.empty
Actual   :null
 <Click to see difference>

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by locating the retrofit2_client_can_retrieve_an_optional_empty test and the Retrofit client implementation it exercises. Reproduce the failure, then trace how an HTTP 204 response is converted for Optional results; done means the test returns Optional.empty rather than null and passes.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
api
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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