[Tests][Tool Parsers] Add test coverage for PoolsideV1ToolParser

[nikhilkulkarni1755]

Created tests for PoolsideV1ToolParser based off of a similar parser (Glm4MoeModelToolParser).

poolside_v1 was the only parser registered in vllm/tool_parsers/__init__.py with a full streaming + non-streaming implementation but zero test coverage. This PR adds that coverage.

Summary

• Adds tests/tool_parsers/test_poolside_v1_tool_parser.py with 13 tests covering both streaming and non-streaming paths
• Tests: no-tool-call passthrough, single tool call, parallel tool calls, empty arguments, surrounding text, type deserialization, and malformed input graceful handling
• Follows the Mock(spec=ChatCompletionRequest) fixture pattern established by test_glm4_moe_tool_parser.py for parsers whose streaming path guards on request.tools

Why not a duplicate

Searched open PRs before filing:

gh pr list --repo vllm-project/vllm --state open --search "poolside tool parser test"
gh pr list --repo vllm-project/vllm --state open --search "poolside_v1"

No results. poolside_v1 has had no test file since it was introduced.

Key implementation note

PoolsideV1ToolParser.extract_tool_calls_streaming short-circuits to content pass-through when request.tools is None. The test fixture uses Mock(spec=ChatCompletionRequest) with tools and logprobs set explicitly — the same pattern as test_glm4_moe_tool_parser.py, which has the identical guard. All tests pass a single mock_request to both streaming and non-streaming paths.

Test plan

.venv/bin/python -m pytest tests/tool_parsers/test_poolside_v1_tool_parser.py -v

PASSED test_no_tool_calls[True]
PASSED test_no_tool_calls[False]
PASSED test_single_tool_call[True]
PASSED test_single_tool_call[False]
PASSED test_parallel_tool_calls[True]
PASSED test_parallel_tool_calls[False]
PASSED test_empty_arguments[True]
PASSED test_empty_arguments[False]
PASSED test_surrounding_text[True]
PASSED test_surrounding_text[False]
PASSED test_various_data_types
PASSED test_malformed_input[True]
PASSED test_malformed_input[False]

13 passed in 2.56s

Pre-commit (all hooks on the new file):

uvx pre-commit run --files tests/tool_parsers/test_poolside_v1_tool_parser.py

ruff check ✓ ruff format ✓ typos ✓ mypy ✓ SPDX headers ✓

AI assistance

This PR was developed with Claude (claude-sonnet-4-6) assistance. All changed lines have been reviewed and understood by the submitter.

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[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @nikhilkulkarni1755.

https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/working-with-forks/syncing-a-fork

[nikhilkulkarni1755]

Closing this — poolside_v1 test coverage has since landed on main (via #46486, #47138, #47311), which supersedes the tests added here. Thanks!