test: add markdown tests

.github/workflows/if-nodejs-pr-testing.yml

@@ -61,8 +61,7 @@ jobs:
         name: Setup Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: "${{ steps.nodeversion.outputs.version }}"
-
+          node-version: '${{ steps.nodeversion.outputs.version }}'
       - name: Install dependencies
         run: npm ci
       - if: steps.packagejson.outputs.exists == 'true'
@@ -76,6 +75,39 @@ jobs:
         shell: bash
         run: npm run generate:assets --if-present
 
+      # Run the test:md script and capture output
+      - if: steps.packagejson.outputs.exists == 'true'
+        name: Run markdown checks
+        id: markdown_check
+        run: |
+          ERRORS=$(npm run test:md) 
+          echo "markdown_output=$ERRORS" >> $GITHUB_OUTPUT
+
+      # Post a comment using sticky-pull-request-comment
+      - name: Comment on PR with markdown issues
+        if: ${{ steps.markdown_check.outputs.markdown_output != '' }}
+        uses: marocchino/sticky-pull-request-comment@3d60a5b2dae89d44e0c6ddc69dd7536aec2071cd
+        with:
+          header: markdown-check-error
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+          message: |
+            ### Markdown Check Results
+
+            We found issues in the following markdown files:
+
+            ```
+            ${{ steps.markdown_check.outputs.markdown_output }}
+            ```
+
+      # Delete the comment if there are no issues
+      - if: ${{ steps.markdown_check.outputs.markdown_output == '' }}
+        name: Delete markdown check comment
+        uses: marocchino/sticky-pull-request-comment@3d60a5b2dae89d44e0c6ddc69dd7536aec2071cd
+        with:
+          header: markdown-check-error
+          delete: true
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+
       - if: steps.packagejson.outputs.exists == 'true'
         name: Upload Coverage to Codecov
         uses: codecov/codecov-action@e28ff129e5465c2c0dcc6f003fc735cb6ae0c673

package.json

@@ -23,6 +23,7 @@
     "generate:videos": "node scripts/build-newsroom-videos.js",
     "generate:tools": "node scripts/build-tools.js",
     "test:netlify": "deno test --allow-env --trace-ops netlify/**/*.test.ts",
+    "test:md": "node scripts/markdown/check-markdown.js",
     "dev:storybook": "storybook dev -p 6006",
     "build:storybook": "storybook build"
   },

scripts/markdown/check-markdown.js

@@ -0,0 +1,140 @@
+const fs = require('fs');
+const matter = require('gray-matter');
+const path = require('path');
+
+/**
+ * Checks if a given string is a valid URL.
+ * @param {string} str - The string to validate as a URL.
+ * @returns {boolean} True if the string is a valid URL, false otherwise.
+ */
+function isValidURL(str) {
+    try {
+        new URL(str);
+        return true;
+    } catch (err) {
+        return false;
+    }
+}
+
+/**
+ * Validates the frontmatter of a blog post.
+ * @param {object} frontmatter - The frontmatter object to validate.
+ * @param {string} filePath - The path to the file being validated.
+ * @returns {string[]|null} An array of validation error messages, or null if no errors.
+ */
+function validateBlogs(frontmatter) {
+    const requiredAttributes = ['title', 'date', 'type', 'tags', 'cover', 'authors'];
+    const errors = [];
+
+    // Check for required attributes
+    requiredAttributes.forEach(attr => {
+        if (!frontmatter.hasOwnProperty(attr)) {
+            errors.push(`${attr} is missing`);
+        }
+    });
+
+    // Validate date format
+    if (frontmatter.date && isNaN(Date.parse(frontmatter.date))) {
+        errors.push(`Invalid date format: ${frontmatter.date}`);
+    }
+
+    // Validate tags format (must be an array)
+    if (frontmatter.tags && !Array.isArray(frontmatter.tags)) {
+        errors.push(`Tags should be an array`);
+    }
+
+    // Validate cover is a string
+    if (frontmatter.cover && typeof frontmatter.cover !== 'string') {
+        errors.push(`Cover must be a string`);
+    }
+
+    // Validate authors (must be an array with valid attributes)
+    if (frontmatter.authors) {
+        if (!Array.isArray(frontmatter.authors)) {
+            errors.push('Authors should be an array');
+        } else {
+            frontmatter.authors.forEach((author, index) => {
+                if (!author.name) {
+                    errors.push(`Author at index ${index} is missing a name`);
+                }
+                if (author.link && !isValidURL(author.link)) {
+                    errors.push(`Invalid URL for author at index ${index}: ${author.link}`);
+                }
+                if (!author.photo) {
+                    errors.push(`Author at index ${index} is missing a photo`);
+                }
+            });
+        }
+    }
+
+    return errors.length ? errors : null;
+}
+
+/**
+ * Validates the frontmatter of a documentation file.
+ * @param {object} frontmatter - The frontmatter object to validate.
+ * @param {string} filePath - The path to the file being validated.
+ * @returns {string[]|null} An array of validation error messages, or null if no errors.
+ */
+function validateDocs(frontmatter) {
+    const errors = [];
+
+    // Check if title exists and is a string
+    if (!frontmatter.title || typeof frontmatter.title !== 'string') {
+        errors.push('Title is missing or not a string');
+    }
+
+    // Check if weight exists and is a number
+    if (frontmatter.weight === undefined || typeof frontmatter.weight !== 'number') {
+        errors.push('Weight is missing or not a number');
+    }
+
+    return errors.length ? errors : null;
+}
+
+/**
+ * Recursively checks markdown files in a folder and validates their frontmatter.
+ * @param {string} folderPath - The path to the folder to check.
+ * @param {Function} validateFunction - The function used to validate the frontmatter.
+ * @param {string} [relativePath=''] - The relative path of the folder for logging purposes.
+ */
+function checkMarkdownFiles(folderPath, validateFunction, relativePath = '') {
+    fs.readdir(folderPath, (err, files) => {
+        if (err) {
+            console.error('Error reading directory:', err);
+            return;
+        }
+
+        files.forEach(file => {
+            const filePath = path.join(folderPath, file);
+            const relativeFilePath = path.join(relativePath, file);
+
+            fs.stat(filePath, (err, stats) => {
+                if (err) {
+                    console.error('Error reading file stats:', err);
+                    return;
+                }
+
+                // Recurse if directory, otherwise validate markdown file
+                if (stats.isDirectory()) {
+                    checkMarkdownFiles(filePath, validateFunction, relativeFilePath);
+                } else if (path.extname(file) === '.md') {
+                    const fileContent = fs.readFileSync(filePath, 'utf-8');
+                    const { data: frontmatter } = matter(fileContent);
+
+                    const errors = validateFunction(frontmatter);
+                    if (errors) {
+                        console.log(`Errors in file ${relativeFilePath}:`);
+                        errors.forEach(error => console.log(`${error}\n`));
+                    }
+                }
+            });
+        });
+    });
+}
+
+const docsFolderPath = path.resolve(__dirname, '../../markdown/docs');
+const blogsFolderPath = path.resolve(__dirname, '../../markdown/blog');
+
+checkMarkdownFiles(docsFolderPath, validateDocs);
+checkMarkdownFiles(blogsFolderPath, validateBlogs);