[lbarrosby]

Unleash variants can be defined without a payload (only a name, e.g. for A/B tests that branch on getVariant). UnleashProvider.getObjectEvaluation turned such a variant into new Value(null):

value = evaluatedVariant.getPayload().map(p -> new Value(p.getValue())).orElse(null);

With unleash-client-java 11.2.1 a payload-less variant comes back with a payload whose value is null, so the provider returned Value(innerObject=null). As a result:

• getStringEvaluation returned null instead of the caller's default, with no error code
• getIntegerEvaluation / getDoubleEvaluation call getValue().asObject().toString() and throw a NullPointerException, which the SDK reports as GENERAL
• an older client that returns an empty Optional gives value=null from getObjectEvaluation, and the string, integer and double paths then fail with a NullPointerException on getValue()

The provider now maps the payload value first and falls back to the default value when there is none. The variant name and the enabled / payload-type metadata stay as they were.

Test: a new no-payload-flag in features.json (one variant blue, no payload) and UnleashProviderTest.variantWithoutPayloadReturnsDefault, which checks string, integer, double and object evaluations directly on the provider and through a client (value is the default, variant is blue, no error code). On main it fails with expected: <fallback> but was: <null>. With the change, ./mvnw -B -pl providers/unleash -am verify passes (11 tests, spotless, checkstyle, spotbugs).

[coderabbitai]

Walkthrough

The Unleash provider converts a present payload value to an SDK Value and returns the supplied default when the payload is absent. Tests cover string, integer, double, and object evaluations, plus variant and client detail results for an experiment without a payload.

Changes: Unleash Payload Fallback

Layer / File(s)	Summary
Payload evaluation and fallback providers/unleash/src/main/java/dev/openfeature/contrib/providers/unleash/UnleashProvider.java, providers/unleash/src/test/java/dev/openfeature/contrib/providers/unleash/UnleashProviderTest.java, providers/unleash/src/test/resources/features.json	The provider converts present payload values to SDK values and returns the supplied default when a payload is absent. The no-payload fixture and test cover string, integer, double, and object defaults, along with the "blue" variant and client string details.

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Suggested reviewers: aepfli, toddbaert

Merge Risk: Minimal · up to 0005b

The change appears mergeable after normal checks.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentat…	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Title check		The title clearly describes the main change: return the caller’s default when an Unleash variant has no payload.
Description check		The description explains the payload-less variant behavior, the default-value fix, and the tests added for the change.
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Docstring Coverage

Explanation

Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 1 functions across 2 files. (1 skipped: 1 unsupported.)

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

• Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts

[coderabbitai]

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Failed pre-merge checks:
- Docstring Coverage:
Write docstrings for the functions missing them to satisfy the coverage
threshold.

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Reviewing files that changed from the base of the PR and between cd57b3a and 0005b81.

Files selected for processing: 3

• providers/unleash/src/main/java/dev/openfeature/contrib/providers/unleash/UnleashProvider.java
• providers/unleash/src/test/java/dev/openfeature/contrib/providers/unleash/UnleashProviderTest.java
• providers/unleash/src/test/resources/features.json

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