fix: uvx split command by jordanrfrazier · Pull Request #11835 · langflow-ai/langflow (original) (raw)
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Walkthrough
A single-line change in the command construction logic of update_tools that tokenizes the command string using shlex.split() before combining it with arguments, replacing the previous approach of treating the command as a single token.
Changes
| Cohort / File(s) | Summary |
|---|---|
| Command tokenization src/lfx/src/lfx/base/mcp/util.py | Modified full_command construction to use shlex.join([*shlex.split(command), *args]) instead of shlex.join([command, *args]), ensuring the initial command string is properly tokenized before argument concatenation. |
Estimated code review effort
🎯 1 (Trivial) | ⏱️ ~3 minutes
Important
Pre-merge checks failed
Please resolve all errors before merging. Addressing warnings is optional.
❌ Failed checks (1 error, 2 warnings)
| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| Test Coverage For New Implementations | ❌ Error | PR introduces a one-line bug fix for multi-word command tokenization but lacks regression tests verifying the fix and error handling for malformed commands. | Add regression tests to test_mcp_util.py verifying multi-word command tokenization, malformed command error handling, and cross-platform compatibility. |
| Test Quality And Coverage | ⚠️ Warning | Tests lack coverage for multi-word commands and malformed command string error handling that the PR modifies. | Add tests for multi-word commands (e.g., 'uvx mcp-server-time') and error cases with malformed strings; wrap shlex.split() in try/except. |
| Test File Naming And Structure | ⚠️ Warning | Tests lack coverage for the edge case explicitly identified in review comments: shlex.split() raising ValueError for malformed command strings with unterminated quotes. | Add a test function to verify that ValueError is raised and handled gracefully when invalid command syntax with unterminated quotes is provided. |
✅ Passed checks (4 passed)
| Check name | Status | Explanation |
|---|---|---|
| Description Check | ✅ Passed | Check skipped - CodeRabbit’s high-level summary is enabled. |
| Title check | ✅ Passed | The title 'fix: uvx split command' directly relates to the main change: reworking command tokenization in the MCP utility to properly split commands before appending arguments. |
| Docstring Coverage | ✅ Passed | Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. |
| Excessive Mock Usage Warning | ✅ Passed | No test files with excessive mock usage were found in the repository related to the modified code. |
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fix-mcp-split
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