CAMEL-19531: Remove unnecessary Thread.sleep calls from leveldb tests

[anvithsg2004]

Motivation

Some leveldb tests contain unnecessary Thread.sleep() calls that increase test execution time without contributing to the behavior being verified.

Modifications

• Removed unnecessary Thread.sleep() calls from leveldb tests.
• Kept the existing test assertions and behavior unchanged.

Result

The tests continue to pass while avoiding unnecessary waiting, resulting in faster and more efficient test execution.

[davsclaus]

LGTM — all six Thread.sleep() removals are safe.

Thread.sleep(3) / Thread.sleep(5) in concurrent tests (4 files): These trivial delays inside Callable tasks provide no meaningful simulation. The tests already use MockEndpoint.assertIsSatisfied() with proper timeouts.

Thread.sleep(1000) between stop/start (2 files): LevelDBFile.stop() and start() are both fully synchronous — stop() calls IOHelper.close(db) and nulls the reference, start() opens a new connection via DBFactory.open(). No async cleanup, so no delay needed.

Awaitility replacement is not necessary here since the sleeps were genuinely superfluous rather than masking race conditions.

This review was generated by an AI agent and may contain inaccuracies. Please verify all suggestions before applying.

[github-actions]

🌟 Thank you for your contribution to the Apache Camel project! 🌟
🤖 CI automation will test this PR automatically.

🐫 Apache Camel Committers, please review the following items:

• First-time contributors require MANUAL approval for the GitHub Actions to run
• You can use the command /component-test (camel-)component-name1 (camel-)component-name2.. to request a test from the test bot although they are normally detected and executed by CI.
• You can label PRs using skip-tests and test-dependents to fine-tune the checks executed by this PR.
• Build and test logs are available in the summary page. Only Apache Camel committers have access to the summary.

⚠️ Be careful when sharing logs. Review their contents before sharing them publicly.

[github-actions]

🧪 CI tested the following changed modules:

• components/camel-leveldb

All tested modules (8 modules)

• Camel :: JBang :: MCP
• Camel :: JBang :: Plugin :: Route Parser
• Camel :: JBang :: Plugin :: TUI
• Camel :: JBang :: Plugin :: Validate
• Camel :: Launcher :: Container
• Camel :: LevelDB (deprecated)
• Camel :: YAML DSL :: Validator
• Camel :: YAML DSL :: Validator Maven Plugin

---

⚙️ View full build and test results