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+
+# Documentation Testing
+
+## Overview
+
+Test documentation like you test code. Core principle: **If you haven't tried it, it's broken**.
+
+**Key insight**: Untested documentation always has issues. Copy-paste-run test finds them before users do.
+
+## When to Use
+
+Load this skill when:
+- Finalizing documentation before release
+- Reviewing documentation quality
+- Creating documentation quality gates
+- After major doc updates
+
+**Symptoms you need this**:
+- "Is this documentation good enough to ship?"
+- Preparing installation guides, quick starts, tutorials
+- Documentation quality review
+- Pre-release documentation checklist
+
+**Don't use for**:
+- Writing documentation (use `muna/technical-writer/clarity-and-style`)
+- Structuring documentation (use `muna/technical-writer/documentation-structure`)
+
+## Five Testing Dimensions
+
+Test documentation across 5 dimensions:
+
+### 1. Completeness Testing
+**Question**: Can reader accomplish the task with ONLY this documentation?
+
+### 2. Accuracy Testing
+**Question**: Do all examples, commands, and instructions actually work?
+
+### 3. Findability Testing
+**Question**: Can users find this documentation when they need it?
+
+### 4. Example Verification
+**Question**: Can you copy-paste every example and have it run without modification?
+
+### 5. Walkthrough Testing
+**Question**: Can a new user follow this successfully on a clean system?
+
+
+## Dimension 1: Completeness Testing
+
+**Goal**: Verify reader can complete task without external resources.
+
+### Checklist
+
+- [ ] **All prerequisites listed** - OS, language versions, required accounts, tools
+- [ ] **All configuration options documented** - Every setting, not just defaults
+- [ ] **Error cases covered** - What can go wrong and how to fix
+- [ ] **Troubleshooting section** - Common issues with solutions
+- [ ] **Success criteria** - "How do I know it worked?"
+- [ ] **Next steps** - What to do after completing this doc
+
+### Example: Installation Guide
+
+❌ **Incomplete**:
+```markdown
+## Installation
+
+Run:
+\`\`\`bash
+npm install our-app
+\`\`\`
+
+You're done!
+```
+
+**Missing**: Prerequisites, error handling, verification
+
+✅ **Complete**:
+```markdown
+## Installation
+
+### Prerequisites
+- Node.js 18+ (`node --version` to check)
+- npm 9+ (`npm --version` to check)
+- Active internet connection
+
+### Install
+
+\`\`\`bash
+npm install our-app
+\`\`\`
+
+### Verify Installation
+
+Check installed version:
+\`\`\`bash
+npx our-app --version
+# Expected output: our-app v2.1.0
+\`\`\`
+
+### Troubleshooting
+
+**Error: "EACCES: permission denied"**
+- Solution: Run with sudo: `sudo npm install -g our-app`
+
+**Error: "Unsupported engine"**
+- Solution: Upgrade Node.js to 18+
+
+### Next Steps
+- [Quick Start Guide](./quick-start.md)
+- [Configuration Reference](./config.md)
+```
+
+### Testing Method
+
+**The "Clean Slate Test"**:
+1. Can someone with ZERO context complete this?
+2. Read doc, follow instructions
+3. Note every moment you had to Google or guess
+
+
+## Dimension 2: Accuracy Testing
+
+**Goal**: Verify all examples, commands, and instructions work.
+
+### Checklist
+
+- [ ] **Code examples run** - Copy-paste into environment, executes without errors
+- [ ] **Commands correct** - No typos, correct options, work on stated OS
+- [ ] **Version numbers current** - Not referencing outdated versions
+- [ ] **Screenshots up-to-date** - Match current UI
+- [ ] **Links work** - No 404s, links go to correct pages
+- [ ] **Output matches examples** - Documented output = actual output
+
+### Example: API Documentation
+
+❌ **Inaccurate**:
+```markdown
+Make a request:
+\`\`\`bash
+curl https://api.example.com/users
+\`\`\`
+
+Returns user list.
+```
+
+**Issues**: No authentication, vague output
+
+✅ **Accurate**:
+```markdown
+Make a request:
+\`\`\`bash
+curl -H "Authorization: Bearer YOUR_API_KEY" \\
+     https://api.example.com/v1/users
+\`\`\`
+
+Response:
+\`\`\`json
+{
+  "users": [
+    {"id": 1, "name": "Alice"},
+    {"id": 2, "name": "Bob"}
+  ],
+  "total": 2
+}
+\`\`\`
+
+Status: 200 OK
+```
+
+### Testing Method
+
+**Copy-Paste-Run Test**:
+1. Copy EVERY code example
+2. Paste into clean environment
+3. Run without modifications
+4. Verify output matches documentation
+5. If ANY example fails, documentation is inaccurate
+
+
+## Dimension 3: Findability Testing
+
+**Goal**: Verify users can find documentation when needed.
+
+### Checklist
+
+- [ ] **Keywords present** - Terms users would search for
+- [ ] **Linked from related pages** - Cross-references in both directions
+- [ ] **In navigation/TOC** - Appears in sidebar, index, sitemap
+- [ ] **Search engine optimized** - Title, headers, meta description
+- [ ] **Clear title** - Describes content accurately
+
+### Example: Deployment Guide
+
+❌ **Not Findable**:
+```markdown
+# Guide
+
+Deploy the app...
+```
+
+**Issues**: Generic title, no keywords
+
+✅ **Findable**:
+```markdown
+# Deploying to AWS ECS with Docker (Production)
+
+**Keywords**: AWS, ECS, Fargate, Docker, deployment, production, continuous deployment, CI/CD
+
+Deploy our application to AWS Elastic Container Service (ECS) using Docker containers...
+
+**Related**:
+- [Docker Configuration](./docker.md)
+- [CI/CD Pipeline](./cicd.md)
+- [Environment Variables](./env-vars.md)
+```
+
+### Testing Method
+
+**Search Simulation**:
+1. What would user search for? ("deploy to AWS", "ECS deployment", "Docker production")
+2. Search your docs with those terms
+3. Does this page appear in top 3 results?
+
+
+## Dimension 4: Example Verification
+
+**Goal**: All examples work without modification.
+
+### Checklist
+
+- [ ] **Examples are complete** - Include all necessary imports, setup
+- [ ] **No placeholders without explanation** - If using `YOUR_API_KEY`, explain how to get it
+- [ ] **Environment specified** - Language version, OS, dependencies
+- [ ] **Async/await correct** - Don't forget await on promises
+- [ ] **Error handling shown** - Not just happy path
+
+### Example: Code Example
+
+❌ **Unverified**:
+```javascript
+const users = client.get('/users');
+console.log(users);
+```
+
+**Issues**: Missing await, won't work
+
+✅ **Verified**:
+```javascript
+// Prerequisites: npm install api-client
+// Environment: Node.js 18+
+
+import APIClient from 'api-client';
+
+// Get API key from https://dashboard.example.com/settings
+const client = new APIClient(process.env.API_KEY);
+
+async function getUsers() {
+  try {
+    const users = await client.get('/users');
+    console.log('Users:', users);
+    // Output: Users: [{id: 1, name: 'Alice'}, {id: 2, name: 'Bob'}]
+  } catch (error) {
+    console.error('Failed to fetch users:', error.message);
+  }
+}
+
+getUsers();
+```
+
+### Testing Method
+
+**Literal Copy-Paste Test**:
+1. Copy example
+2. Create new file
+3. Paste (no modifications)
+4. Run
+5. Does it work? If not, example is broken.
+
+
+## Dimension 5: Walkthrough Testing
+
+**Goal**: New user can follow successfully on clean system.
+
+### Checklist
+
+- [ ] **Test on clean system** - Fresh VM/container, not your dev machine
+- [ ] **Follow every step literally** - No shortcuts, no cached knowledge
+- [ ] **Note confusion points** - Every time you have to guess or Google
+- [ ] **Verify timing claims** - "5 minute setup" actually takes 5 minutes?
+- [ ] **Test with beginner** - Colleague unfamiliar with project
+
+### Example: Quick Start
+
+❌ **Untested**:
+```markdown
+# Quick Start (5 minutes)
+
+1. Install the CLI
+2. Configure your credentials
+3. Deploy your first app
+
+Done!
+```
+
+**Issues**: Vague steps, unverified timing
+
+✅ **Walkthrough-Tested**:
+```markdown
+# Quick Start (15 minutes)
+
+## Prerequisites (2 min)
+- [ ] Ubuntu 22.04 or macOS 12+
+- [ ] 2GB free disk space
+- [ ] Internet connection
+
+## Step 1: Install CLI (5 min)
+
+\`\`\`bash
+curl -L https://releases.example.com/cli.sh | bash
+\`\`\`
+
+Verify:
+\`\`\`bash
+our-cli --version
+# Should output: our-cli v2.1.0
+\`\`\`
+
+**Troubleshooting**: If command not found, close and reopen terminal.
+
+## Step 2: Configure Credentials (3 min)
+
+Get API key: https://dashboard.example.com/settings
+
+\`\`\`bash
+our-cli auth login YOUR_API_KEY_HERE
+\`\`\`
+
+Success message: "✓ Authenticated as user@example.com"
+
+## Step 3: Deploy First App (5 min)
+
+\`\`\`bash
+mkdir my-app && cd my-app
+our-cli init
+our-cli deploy
+\`\`\`
+
+**Success criteria**: URL shown: "✓ Deployed to https://my-app-abc123.example.com"
+
+Visit URL in browser - you should see "Hello World"
+
+## Next Steps
+- [Add custom domain](./custom-domains.md)
+- [Configure environment variables](./env-vars.md)
+```
+
+### Testing Method
+
+**New User Walkthrough**:
+1. Spin up clean VM/container
+2. Follow guide step-by-step as written
+3. Don't use any cached knowledge
+4. Note EVERY point of confusion
+5. Time how long it actually takes
+
+**Or**: Give to colleague who's never used the product. Watch them follow it. Note every question they ask.
+
+
+## Testing Workflow
+
+Use this workflow before releasing documentation:
+
+### Phase 1: Quick Checks (10 min)
+
+- [ ] Read through once - obvious errors?
+- [ ] Check all links - do they work?
+- [ ] Scan for placeholders - any unexplained `YOUR_X_HERE`?
+- [ ] Verify versions - are version numbers current?
+
+### Phase 2: Example Verification (30 min)
+
+- [ ] Copy EVERY code example
+- [ ] Paste into clean environment
+- [ ] Run without modifications
+- [ ] Verify output matches docs
+
+### Phase 3: Completeness Check (15 min)
+
+- [ ] Prerequisites listed?
+- [ ] Error cases covered?
+- [ ] Troubleshooting section?
+- [ ] Success criteria ("how do I know it worked")?
+
+### Phase 4: Walkthrough Test (60 min)
+
+- [ ] Fresh VM/container
+- [ ] Follow as new user
+- [ ] Note confusion points
+- [ ] Verify timing claims
+
+### Phase 5: Findability Check (10 min)
+
+- [ ] Search docs with user keywords
+- [ ] Check cross-references
+- [ ] Verify in navigation/TOC
+
+**Total time**: ~2 hours for thorough documentation testing
+
+
+## Common Issues Found By Testing
+
+### Issue: Async/Await Missing
+
+**Example**:
+```javascript
+const data = api.get('/endpoint'); // Missing await
+console.log(data); // Prints Promise object, not data
+```
+
+**Found by**: Copy-paste-run test
+
+
+### Issue: Prerequisites Not Listed
+
+**Example**:
+```markdown
+Run: `docker-compose up`
+```
+
+**Missing**: Docker installed, docker-compose.yml file exists
+
+**Found by**: Clean system walkthrough
+
+
+### Issue: Environment Variables Not Explained
+
+**Example**:
+```javascript
+const key = process.env.API_KEY; // How do I set this?
+```
+
+**Found by**: New user walkthrough (where do I get API key?)
+
+
+### Issue: Timing Claims Unverified
+
+**Example**: "Setup in 5 minutes" actually takes 20 minutes (npm install, account creation, key generation)
+
+**Found by**: Walkthrough testing with timer
+
+
+### Issue: Success Criteria Missing
+
+**Example**:
+```markdown
+Deploy your app:
+\`\`\`bash
+deploy.sh
+\`\`\`
+```
+
+**Missing**: How do I know it worked? What URL? What should I see?
+
+**Found by**: Completeness testing
+
+
+## Documentation Testing Report Template
+
+```markdown
+# Documentation Testing Report
+
+**Document**: [Quick Start Guide / API Reference / etc.]
+**Tester**: [Name]
+**Date**: [Date]
+**Environment**: [Clean Ubuntu 22.04 VM / macOS 13 / etc.]
+
+## Test Results
+
+### Completeness ✅ / ❌
+- [ ] Prerequisites listed
+- [ ] Error cases covered
+- [ ] Troubleshooting included
+- [ ] Success criteria present
+
+**Issues Found**: [List any gaps]
+
+### Accuracy ✅ / ❌
+- [ ] All code examples run
+- [ ] All commands correct
+- [ ] Links work
+- [ ] Output matches docs
+
+**Issues Found**: [List inaccuracies]
+
+### Findability ✅ / ❌
+- [ ] Keywords present
+- [ ] Linked from related pages
+- [ ] In navigation
+
+**Issues Found**: [List findability gaps]
+
+### Examples ✅ / ❌
+**Copy-Paste-Run Results**:
+- Example 1: ✅ Works / ❌ Failed - [error]
+- Example 2: ✅ Works / ❌ Failed - [error]
+
+### Walkthrough ✅ / ❌
+**Confusion Points**: [List every point where you had to guess or Google]
+**Actual Time**: [X minutes] vs Claimed: [Y minutes]
+**Success**: ✅ Completed task / ❌ Got stuck at step X
+
+## Recommendations
+1. [Fix async/await in example 2]
+2. [Add prerequisites section]
+3. [Update timing claim from 5 to 15 minutes]
+
+## Overall: Ready for Release ✅ / Needs Work ❌
+```
+
+
+## Quick Reference: Testing Checklist
+
+| Dimension | Key Question | Quick Test |
+|-----------|--------------|------------|
+| **Completeness** | Can task be done with ONLY this doc? | List everything needed - is it in the doc? |
+| **Accuracy** | Do examples run? | Copy-paste every example, run it |
+| **Findability** | Can users find this? | Search with user keywords - does it appear? |
+| **Examples** | Copy-paste-run works? | Literally copy-paste, no modifications, run |
+| **Walkthrough** | Does it work for new user? | Fresh VM, follow as beginner, time it |
+
+
+## Cross-References
+
+**Use BEFORE this skill**:
+- `muna/technical-writer/clarity-and-style` - Write clear docs
+- `muna/technical-writer/documentation-structure` - Structure docs properly
+
+**Use AFTER this skill**:
+- Fix issues found, then re-test
+
+## Real-World Impact
+
+**Documentation tested with this framework:**
+- **Quick start guide testing caught async/await bug** in 3/5 examples (would have broken for every user)
+- **Walkthrough testing revealed "5 minute setup" actually took 22 minutes** (including account creation and key generation not mentioned in docs)
+- **Copy-paste-run test found missing `import` statement** that prevented example from running (developer's IDE auto-imported it)
+- **Clean system test revealed missing prerequisite** (Docker Compose not documented) that blocked 40% of users
+
+**Key lesson**: **Untested documentation always has issues. 2 hours of testing prevents weeks of user confusion and support tickets.**