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Improve test coverage for redis package (3 tests, 872 LOC) #20

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Improve test coverage for redis package (3 tests, 872 LOC)#20
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area:backendcomponent:databasepriority:hightech-debt

Description

@BrewingCoder
BrewingCoder
opened on Mar 19, 2026

Area

Backend — API / GraphQL

Category

Test coverage

Description

The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.

Critical untested paths:

  1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
  2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
  3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
  4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
  5. Snappy fallback — silent fallback to raw bytes on decompression failure

Known gotchas:

  • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
  • Snappy decode failure silently falls back to raw bytes — could mask corruption
  • FlushDB/Del are silent no-ops in production — callers may not realize

See src/backend/redis/MODULE.md for full analysis.

Affected Files / Packages

src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

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    area:backendcomponent:databasepriority:hightech-debt

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      , 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Improve test coverage for redis package (3 tests, 872 LOC) · Issue #20 · BrewingCoder/holdfast · GitHub
      Skip to content
      Improve test coverage for redis package (3 tests, 872 LOC) #20
      Open
      Open
      Improve test coverage for redis package (3 tests, 872 LOC)#20
      Labels
      area:backendcomponent:databasepriority:hightech-debt
      Description
      @BrewingCoder
      BrewingCoder
      opened on Mar 19, 2026
      Area
      Backend — API / GraphQL
      Category
      Test coverage
      Description
      The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.
      Critical untested paths:
      1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
      2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
      3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
      4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
      5. Snappy fallback — silent fallback to raw bytes on decompression failure
      Known gotchas:
      • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
      • Snappy decode failure silently falls back to raw bytes — could mask corruption
      • FlushDB/Del are silent no-ops in production — callers may not realize
      See src/backend/redis/MODULE.md for full analysis.
      Affected Files / Packages
      src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        area:backendcomponent:databasepriority:hightech-debt
        Projects
        No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
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style.textContent = '
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color-scheme: dark light;
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.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
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}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Improve test coverage for redis package (3 tests, 872 LOC) · Issue #20 · BrewingCoder/holdfast · GitHub
          Skip to content
          Improve test coverage for redis package (3 tests, 872 LOC) #20
          Open
          Open
          Improve test coverage for redis package (3 tests, 872 LOC)#20
          Labels
          area:backendcomponent:databasepriority:hightech-debt
          Description
          @BrewingCoder
          BrewingCoder
          opened on Mar 19, 2026
          Area
          Backend — API / GraphQL
          Category
          Test coverage
          Description
          The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.
          Critical untested paths:
          1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
          2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
          3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
          4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
          5. Snappy fallback — silent fallback to raw bytes on decompression failure
          Known gotchas:
          • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
          • Snappy decode failure silently falls back to raw bytes — could mask corruption
          • FlushDB/Del are silent no-ops in production — callers may not realize
          See src/backend/redis/MODULE.md for full analysis.
          Affected Files / Packages
          src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            area:backendcomponent:databasepriority:hightech-debt
            Projects
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              Milestone
              No milestone
              Relationships
              None yet
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              No branches or pull requests
              Issue actions
              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
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var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
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var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Improve test coverage for redis package (3 tests, 872 LOC) · Issue #20 · BrewingCoder/holdfast · GitHub
              Skip to content
              Improve test coverage for redis package (3 tests, 872 LOC) #20
              Open
              Open
              Improve test coverage for redis package (3 tests, 872 LOC)#20
              Labels
              area:backendcomponent:databasepriority:hightech-debt
              Description
              @BrewingCoder
              BrewingCoder
              opened on Mar 19, 2026
              Area
              Backend — API / GraphQL
              Category
              Test coverage
              Description
              The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.
              Critical untested paths:
              1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
              2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
              3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
              4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
              5. Snappy fallback — silent fallback to raw bytes on decompression failure
              Known gotchas:
              • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
              • Snappy decode failure silently falls back to raw bytes — could mask corruption
              • FlushDB/Del are silent no-ops in production — callers may not realize
              See src/backend/redis/MODULE.md for full analysis.
              Affected Files / Packages
              src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                area:backendcomponent:databasepriority:hightech-debt
                Projects
                No projects
                  Milestone
                  No milestone
                  Relationships
                  None yet
                  Development
                  No branches or pull requests
                  Issue actions
                  
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Improve test coverage for redis package (3 tests, 872 LOC) · Issue #20 · BrewingCoder/holdfast · GitHub
                  Skip to content
                  Improve test coverage for redis package (3 tests, 872 LOC) #20
                  Open
                  Open
                  Improve test coverage for redis package (3 tests, 872 LOC)#20
                  Labels
                  area:backendcomponent:databasepriority:hightech-debt
                  Description
                  @BrewingCoder
                  BrewingCoder
                  opened on Mar 19, 2026
                  Area
                  Backend — API / GraphQL
                  Category
                  Test coverage
                  Description
                  The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.
                  Critical untested paths:
                  1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
                  2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
                  3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
                  4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
                  5. Snappy fallback — silent fallback to raw bytes on decompression failure
                  Known gotchas:
                  • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
                  • Snappy decode failure silently falls back to raw bytes — could mask corruption
                  • FlushDB/Del are silent no-ops in production — callers may not realize
                  See src/backend/redis/MODULE.md for full analysis.
                  Affected Files / Packages
                  src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

                  Metadata
                  Metadata
                  Assignees
                  No one assigned
                    Labels
                    area:backendcomponent:databasepriority:hightech-debt
                    Projects
                    No projects
                      Milestone
                      No milestone
                      Relationships
                      None yet
                      Development
                      No branches or pull requests
                      Issue actions
                      
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
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// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Improve test coverage for redis package (3 tests, 872 LOC) · Issue #20 · BrewingCoder/holdfast · GitHub
                      Skip to content
                      Improve test coverage for redis package (3 tests, 872 LOC) #20
                      Open
                      Open
                      Improve test coverage for redis package (3 tests, 872 LOC)#20
                      Labels
                      area:backendcomponent:databasepriority:hightech-debt
                      Description
                      @BrewingCoder
                      BrewingCoder
                      opened on Mar 19, 2026
                      Area
                      Backend — API / GraphQL
                      Category
                      Test coverage
                      Description
                      The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.
                      Critical untested paths:
                      1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
                      2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
                      3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
                      4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
                      5. Snappy fallback — silent fallback to raw bytes on decompression failure
                      Known gotchas:
                      • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
                      • Snappy decode failure silently falls back to raw bytes — could mask corruption
                      • FlushDB/Del are silent no-ops in production — callers may not realize
                      See src/backend/redis/MODULE.md for full analysis.
                      Affected Files / Packages
                      src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

                      Metadata
                      Metadata
                      Assignees
                      No one assigned
                        Labels
                        area:backendcomponent:databasepriority:hightech-debt
                        Projects
                        No projects
                          Milestone
                          No milestone
                          Relationships
                          None yet
                          Development
                          No branches or pull requests
                          Issue actions
                          
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
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var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Improve test coverage for redis package (3 tests, 872 LOC) · Issue #20 · BrewingCoder/holdfast · GitHub
                          Skip to content
                          Improve test coverage for redis package (3 tests, 872 LOC) #20
                          Open
                          Open
                          Improve test coverage for redis package (3 tests, 872 LOC)#20
                          Labels
                          area:backendcomponent:databasepriority:hightech-debt
                          Description
                          @BrewingCoder
                          BrewingCoder
                          opened on Mar 19, 2026
                          Area
                          Backend — API / GraphQL
                          Category
                          Test coverage
                          Description
                          The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.
                          Critical untested paths:
                          1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
                          2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
                          3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
                          4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
                          5. Snappy fallback — silent fallback to raw bytes on decompression failure
                          Known gotchas:
                          • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
                          • Snappy decode failure silently falls back to raw bytes — could mask corruption
                          • FlushDB/Del are silent no-ops in production — callers may not realize
                          See src/backend/redis/MODULE.md for full analysis.
                          Affected Files / Packages
                          src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

                          Metadata
                          Metadata
                          Assignees
                          No one assigned
                            Labels
                            area:backendcomponent:databasepriority:hightech-debt
                            Projects
                            No projects
                              Milestone
                              No milestone
                              Relationships
                              None yet
                              Development
                              No branches or pull requests
                              Issue actions
                              
, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Improve test coverage for redis package (3 tests, 872 LOC) · Issue #20 · BrewingCoder/holdfast · GitHub
                              Skip to content
                              Improve test coverage for redis package (3 tests, 872 LOC) #20
                              Open
                              Open
                              Improve test coverage for redis package (3 tests, 872 LOC)#20
                              Labels
                              area:backendcomponent:databasepriority:hightech-debt
                              Description
                              @BrewingCoder
                              BrewingCoder
                              opened on Mar 19, 2026
                              Area
                              Backend — API / GraphQL
                              Category
                              Test coverage
                              Description
                              The redis package is imported by 36 files and handles session event storage, caching, distributed locks, and async processing queues. It has only 3 tests covering CachedEval and locking — the session data hot path is completely untested.
                              Critical untested paths:
                              1. Session payload round-trip — AddPayload → GetSessionData with Snappy compression
                              2. Processing queue — Lua script atomicity (AddSessionToProcess → GetSessionsToProcess → RemoveSessionToProcess)
                              3. Beacon payload filtering — decimal score handling in GetSessionData (counterintuitive logic)
                              4. Flag tristate — nil vs true vs false for billing quota, GitHub rate limiting
                              5. Snappy fallback — silent fallback to raw bytes on decompression failure
                              Known gotchas:
                              • Lua scripts for session locking use a .5 score offset trick — undocumented, untested
                              • Snappy decode failure silently falls back to raw bytes — could mask corruption
                              • FlushDB/Del are silent no-ops in production — callers may not realize
                              See src/backend/redis/MODULE.md for full analysis.
                              Affected Files / Packages
                              src/backend/redis/utils.go (696 lines — all operations)
src/backend/redis/cache.go (74 lines — generic CachedEval)
src/backend/redis/utils_test.go (102 lines — 3 tests)

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