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fix: respect enableReasoningEffort setting when determining reasoning usage #7049

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Merged
merged 3 commits into from
Aug 18, 2025

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@roomote roomote bot commented Aug 13, 2025

Summary

This PR fixes an issue where the reasoningEffort parameter would override the enableReasoningEffort setting, causing reasoning to be enabled even when explicitly disabled.

Problem

When enableReasoningEffort was set to false in the API configuration, the model would still perform reasoning if reasoningEffort (e.g., "medium") was present. This behavior was unexpected as the enableReasoningEffort setting should take precedence.

Solution

Modified the shouldUseReasoningEffort function in src/shared/api.ts to:

  1. First check if enableReasoningEffort is explicitly set to false
  2. If it is, return false immediately, disabling reasoning regardless of other settings
  3. Otherwise, proceed with the existing logic

Testing

  • Added comprehensive test cases to verify that reasoning is properly disabled when enableReasoningEffort is false
  • All existing tests continue to pass
  • Type checking passes without issues

Related Issue

Fixes #7048


Important

Fixes shouldUseReasoningEffort in api.ts to respect enableReasoningEffort setting, ensuring reasoning is disabled when explicitly set to false.

  • Behavior:
    • Fixes shouldUseReasoningEffort in api.ts to respect enableReasoningEffort setting.
    • Returns false if enableReasoningEffort is false, regardless of reasoningEffort value.
  • Testing:
    • Adds test cases in api.spec.ts to verify behavior when enableReasoningEffort is false.
    • Ensures reasoning is disabled when enableReasoningEffort is false, even if reasoningEffort is set.
    • All existing tests pass without issues.
  • Related Issue:

This description was created by Ellipsis for a81fd3c. You can customize this summary. It will automatically update as commits are pushed.

… usage

- Modified shouldUseReasoningEffort to return false when enableReasoningEffort is explicitly set to false
- This ensures reasoning is disabled when the setting is false, regardless of reasoningEffort value
- Added comprehensive tests to verify the fix

Fixes #7048
@roomote roomote bot requested review from mrubens, cte and jr as code owners August 13, 2025 14:48
@dosubot dosubot bot added size:M This PR changes 30-99 lines, ignoring generated files. bug Something isn't working labels Aug 13, 2025
@hannesrudolph hannesrudolph added the Issue/PR - Triage New issue. Needs quick review to confirm validity and assign labels. label Aug 13, 2025
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Reviewing my own code because apparently I trust no one, not even myself.

}): boolean => {
// If enableReasoningEffort is explicitly set to false, reasoning should be disabled
if (settings?.enableReasoningEffort === false) {
return false
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Is this intentional? When enableReasoningEffort is undefined (not explicitly set), reasoning can still be enabled if other conditions are met. Should we consider treating undefined the same as false for a more conservative approach, or is the current behavior where only an explicit false disables reasoning the desired one?

@@ -63,7 +63,17 @@ export const shouldUseReasoningEffort = ({
}: {
model: ModelInfo
settings?: ProviderSettings
}): boolean => (!!model.supportsReasoningEffort && !!settings?.reasoningEffort) || !!model.reasoningEffort
}): boolean => {
// If enableReasoningEffort is explicitly set to false, reasoning should be disabled
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Consider adding a JSDoc comment above the function to document the precedence rules. This would help future developers understand that enableReasoningEffort: false takes absolute precedence over all other settings.

reasoningEffort: "medium",
}

expect(shouldUseReasoningEffort({ model, settings })).toBe(false)
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Good test coverage for the explicit false case! Consider also adding a test for when enableReasoningEffort is explicitly undefined (not just missing) to document that this allows reasoning to proceed - this would make the behavior more explicit.

@daniel-lxs daniel-lxs moved this from Triage to PR [Needs Prelim Review] in Roo Code Roadmap Aug 15, 2025
@hannesrudolph hannesrudolph added PR - Needs Preliminary Review and removed Issue/PR - Triage New issue. Needs quick review to confirm validity and assign labels. labels Aug 15, 2025
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LGTM

@dosubot dosubot bot added the lgtm This PR has been approved by a maintainer label Aug 15, 2025
@daniel-lxs daniel-lxs moved this from PR [Needs Prelim Review] to PR [Needs Review] in Roo Code Roadmap Aug 15, 2025
mrubens
mrubens previously approved these changes Aug 16, 2025
@mrubens mrubens dismissed their stale review August 16, 2025 03:36

Not sure the right default

Co-authored-by: Matt Rubens <[email protected]>
@daniel-lxs
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@roomote-agent Use switch_mode to switch to pr-fixer mode and solve the issues on this PR. Do not create a new one.

@daniel-lxs daniel-lxs moved this from PR [Needs Review] to PR [Changes Requested] in Roo Code Roadmap Aug 18, 2025
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roomote bot commented Aug 18, 2025

Hi @daniel-lxs! I see your request. I notice the platform unit tests are failing on both Ubuntu and Windows. Let me check out the PR branch and investigate the test failures to fix them.

…tly false

The previous implementation was checking for falsy values (!settings?.enableReasoningEffort)
which would return false when enableReasoningEffort was undefined. This broke the expected
behavior where reasoning should only be disabled when explicitly set to false.

Changed to check for explicit false value (settings?.enableReasoningEffort === false) to
ensure reasoning is only disabled when the user explicitly disables it, not when the
setting is undefined.
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roomote bot commented Aug 18, 2025

@daniel-lxs The issue has been fixed!

Summary of the fix:

The problem was in the shouldUseReasoningEffort function in src/shared/api.ts. The original implementation was checking for falsy values (!settings?.enableReasoningEffort), which would return false when enableReasoningEffort was undefined (not set).

This broke the expected behavior where reasoning should only be disabled when explicitly set to false.

What was changed:

Changed the check from:

if (!settings?.enableReasoningEffort) {
    return false
}

To:

if (settings?.enableReasoningEffort === false) {
    return false
}

This ensures that reasoning is only disabled when the user explicitly sets enableReasoningEffort to false, not when the setting is undefined.

Test Results:

  • ✅ All unit tests are passing
  • ✅ All CI checks have passed successfully

The fix ensures that the enableReasoningEffort setting properly takes precedence over reasoningEffort values, as originally intended.

@daniel-lxs daniel-lxs moved this from PR [Changes Requested] to PR [Needs Review] in Roo Code Roadmap Aug 18, 2025
@mrubens mrubens merged commit 87c42c1 into main Aug 18, 2025
16 checks passed
@mrubens mrubens deleted the fix/reasoning-effort-override branch August 18, 2025 22:07
@github-project-automation github-project-automation bot moved this from New to Done in Roo Code Roadmap Aug 18, 2025
@github-project-automation github-project-automation bot moved this from PR [Needs Review] to Done in Roo Code Roadmap Aug 18, 2025
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reasoningEffort overrides enableReasoningEffort setting in API config
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