Add JUnit5 tests for DefaultPasteUtil

[tastybento]

Summary

• Adds 32 JUnit5 tests for DefaultPasteUtil covering all public and package-private methods
• Tests use MockBukkit + Mockito following the CommonTestSetup pattern used throughout the project

Test coverage

• createBlockData — success and fallback to convertBlockData on exception
• convertBlockData — AIR fallback for unknown blocks, sign→oak_sign and wall_sign→oak_wall_sign legacy conversions, IllegalArgumentException logs warnings
• setBlock — async completion via Util.getChunkAtAsync, biome set/skip
• setSpawner — all seven spawner fields plus update()
• setBlockState — InventoryHolder, CreatureSpawner, Banner (patterns present/null), Sign (writeSign called per side), ItemsAdder hook lookup, generic state no-op
• setEntity — entity spawn and empty-list no-op
• spawnBlueprintEntity — null type, Bukkit entity spawn + configureEntity, custom name with owner placeholder, null island, MythicMobs hook absent fallthrough
• writeSign — normal paste, SPAWN_HERE (AIR/WATER + spawn point), SPAWN_HERE on back side ignored, null island, START_TEXT locale queries, START_TEXT null owner, WallSign facing

Notable implementation detail

DefaultPasteUtil stores BentoBox.getInstance() in a private static final field at class-load time. Mockito 5's inline mock maker clears mock instrumentation between tests via clearInlineMocks(), de-stubbing that captured mock. The test class uses sun.misc.Unsafe.putObject() in @BeforeEach to re-inject the current test's plugin mock into the final field before each test.

Test plan

• All 32 tests pass locally (./gradlew test --tests "world.bentobox.bentobox.util.DefaultPasteUtilTest")

🤖 Generated with Claude Code

[sonarqubecloud]

Quality Gate passed

Issues
15 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud