synthetic-test-data

name	synthetic-test-data
description	Generate Quarkus test data for NebulaTrack satellite events using Instancio models, Datafaker, and domain-specific formats instead of hardcoded literals

Use this skill when writing or modifying tests for SatelliteEventService, SatelliteEventResource, or related NebulaTrack telemetry code in this module.

Read domain formats and forbidden literals before generating fixtures.

Working rules:

1. Reuse factories in src/test/java/dev/quarkex/nebulatrack/testdata/support/SatelliteEventModels.java before inventing new object setup.
2. Use Instancio (org.instancio.Instancio) for domain objects and reusable Model<T> templates.
3. Use Datafaker (net.datafaker.Faker) for standalone formatted strings when Instancio field generators are not enough.
4. Prefer @RepeatedTest or @ParameterizedTest with Instancio models over duplicating near-identical constructors.
5. Do not add Mockito stubs when real domain objects can exercise validation logic.
6. When a random test fails, reproduce it with Instancio.of(model).withSeed(<seed>).create() and leave the seed in a comment or @Seed annotation.

Boundary cases to cover:

• negative altitude
• out-of-range latitude and longitude
• blank eventId
• invalid satelliteId format
• TelemetryState.ANOMALY with null or blank payloadJson

Finish with:

• tests added or updated
• which factory methods or models you reused
• verification command run (./mvnw test or a focused -Dtest= class)