cremote/DAEMON_FIX_SUMMARY.md

Daemon ADA Testing Tools - Critical Bug Fix

Date: 2025-10-02
Issue: All new ADA accessibility testing tools failing with JSON parsing error
Status: ✅ FIXED

Problem Description

All newly implemented ADA testing tools were failing with the error:

failed to parse results: invalid character 'm' looking for beginning of value

Root Cause

The functions were using jsResult.Value.String() which returns Go's string representation of objects (like "map[key:value]") instead of JSON. The correct approach is to either:

1. Use jsResult.Value.Str() for string values
2. Use jsResult.Value.Map() for object values
3. Have JavaScript return JSON.stringify(result) and then use .Value.Str()

Functions Fixed

1. checkContrast (daemon/daemon.go:8889)

Change: Modified JavaScript to return JSON.stringify(results) instead of results Change: Modified parsing from .Value.String() to .Value.Str()

// Before:
return results;
resultsJSON := jsResult.Value.String()

// After:
return JSON.stringify(results);
resultsJSON := jsResult.Value.Str()

2. testKeyboardNavigation (daemon/daemon.go:9170)

Change: Modified JavaScript to return JSON.stringify(results) instead of results Change: Modified parsing from .Value.String() to .Value.Str()

// Before:
return results;
resultsJSON := jsResult.Value.String()

// After:
return JSON.stringify(results);
resultsJSON := jsResult.Value.Str()

3. testZoom (daemon/daemon.go:9373)

Change: Modified JavaScript to return JSON.stringify(result) instead of object Change: Modified parsing from .Value.String() to .Value.Str()

// Before:
return {
    viewport_width: window.innerWidth,
    ...
};
err = json.Unmarshal([]byte(jsResult.Value.String()), &zoomTest)

// After:
return JSON.stringify({
    viewport_width: window.innerWidth,
    ...
});
err = json.Unmarshal([]byte(jsResult.Value.Str()), &zoomTest)

4. testReflow (daemon/daemon.go:9622)

Change: Modified JavaScript to return JSON.stringify(...) instead of object Change: Modified parsing from .Value.String() to .Value.Str()

// Before:
return {
    width: window.innerWidth,
    ...
};
err = json.Unmarshal([]byte(jsResult.Value.String()), &breakpoint)

// After:
return JSON.stringify({
    width: window.innerWidth,
    ...
});
err = json.Unmarshal([]byte(jsResult.Value.Str()), &breakpoint)

5. runAxeCore (daemon/daemon.go:8673)

Change: Modified to use async/await for Promise handling and stringify results Change: Modified parsing from .Value.String() to .Value.Str()

// Before:
runCode := fmt.Sprintf(`() => {
    return axe.run(%s);
}`, optionsJSON)
resultsJSON := jsResult.Value.String()

// After:
runCode := fmt.Sprintf(`async () => {
    const results = await axe.run(%s);
    return JSON.stringify(results);
}`, optionsJSON)
resultsJSON := jsResult.Value.Str()

Note: axe.run() returns a Promise, so we needed to add async/await handling.

Testing Required

After rebuilding and redeploying the daemon, test each function:

1. Contrast Check:

   # Should return detailed contrast analysis without errors
   cremote contrast-check --selector body
   

2. Keyboard Navigation Test:

   # Should return tab order and focus indicator analysis
   cremote keyboard-test
   

3. Zoom Test:

   # Should test at 100%, 200%, 400% zoom levels
   cremote zoom-test --zoom-levels 1.0,2.0,4.0
   

4. Reflow Test:

   # Should test at 320px and 1280px widths
   cremote reflow-test --widths 320,1280
   

5. Axe-Core Test:

   # Should inject and run axe-core tests
   cremote inject-axe
   cremote run-axe --run-only wcag2a,wcag2aa,wcag21aa
   

Deployment Steps

1. Rebuild the daemon:

   cd /home/squash/go/src/git.teamworkapps.com/shortcut/cremote
   go build -o cremotemcp ./daemon
   

2. Rebuild the MCP server:

   cd mcp
   go build -o cremote-mcp
   

3. Restart the cremote daemon container (deployment-specific)

4. Verify fixes by running the test commands above

Files Modified

• daemon/daemon.go - 5 functions fixed (lines 8673-8715, 8889-8931, 9170-9210, 9373-9431, 9622-9688)

Impact

• ✅ Fixes all ADA testing tool failures
• ✅ Enables comprehensive WCAG 2.1 AA compliance testing
• ✅ No breaking changes to API or command-line interface
• ✅ No changes required to client code or MCP tools

Verification Checklist

• Daemon builds successfully without errors
• MCP server builds successfully without errors
• Daemon deployed and running
• web_contrast_check_cremotemcp MCP tool works
• web_keyboard_test_cremotemcp MCP tool works
• web_zoom_test_cremotemcp MCP tool works
• web_reflow_test_cremotemcp MCP tool works
• web_run_axe_cremotemcp MCP tool works
• Full ADA assessment can proceed on visionleadership.org

Related Documentation

• ADA_IMPLEMENTATION_PLAN.md - Original implementation plan
• docs/llm_ada_testing.md - LLM agent usage guide
• enhanced_chromium_ada_checklist.md - WCAG 2.1 AA testing checklist