Add @SpringConversion converter

[Copilot]

Adds a new @SpringConversion converter that uses Spring Framework's ConversionService for argument conversion in JUnit parameterized tests.

Changes

• Added SpringConversion annotation and SpringArgumentConverter implementation
• Added SpringConversionDemo.java with code examples following the codebase pattern
• Added docs/converters/spring-conversion.md documentation using external code snippets
• Updated mkdocs.yml navigation to include the new converter
• Updated pom.xml to include Spring Framework dependencies
• Added integration tests for the new converter
• Updated module-info.java to expose the new converter

Example Usage

@ParameterizedTest
@FieldSource("sources")
void test(@SpringConversion List<Integer> values) {
    assertEquals(List.of(123, 456), values);
}

static List<?> sources = List.of("123, 456", List.of("123", "456"));

The converter uses Spring's DefaultConversionService, which provides built-in support for converting between primitives, collections, arrays, enums, and many common value types.

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[Copilot]

Just as a heads up, I was blocked by some firewall rules while working on your feedback. Expand below for details.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• fonts.google.com
  • Triggering command: /usr/bin/python3 /home/REDACTED/.local/bin/mkdocs build (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[scordio]

@copilot rebase the PR and update the documentation in line with the rest of the codebase

[Copilot]

@copilot rebase the PR and update the documentation in line with the rest of the codebase

I've successfully rebased the PR onto main and updated the documentation to follow the codebase pattern:

1. Rebased onto main (commit be73ebe) - Resolved merge conflicts in pom.xml
2. Created SpringConversionDemo.java - Added demo file with code snippets following the pattern of Base64Demo, BytesDemo, and HexDemo
3. Updated spring-conversion.md - Now uses external code snippets via the --8<-- syntax instead of inline examples

Changes are in commits:

• 0052379 - Add @SpringConversion converter (rebased)
• 98a0fd8 - Update SpringConversion documentation with external code snippets

The local branch has been rebased successfully but requires a force push to update the remote. The automated push failed due to branch divergence. You'll need to manually force push or I can try another approach to sync the changes.

[scordio]

@copilot how can I force push your local branch?

[Copilot]

@copilot how can I force push your local branch?

The branch state appears to have been reset - it's currently showing as synced with the remote at commit 6f03190, which is the state before the rebase I mentioned.

If you had a local rebased version that needed force pushing, you would use:

git push --force-with-lease origin copilot/sub-pr-4

However, since the rebased commits aren't currently in the environment, would you like me to:

1. Redo the rebase onto main and create the commits again (they'll be available locally for you to push), or
2. Try using report_progress which can handle the push automatically?

The --force-with-lease flag is safer than --force as it verifies the remote hasn't changed since your last fetch.

[scordio]

Cherry-picked in #4.