test: add tag extraction test script

Author: Yann VR

test-tags.js

@@ -0,0 +1,57 @@
+// Simple test for tag extraction functionality
+function extractHashtagsFromContent(content) {
+  // Match hashtags that are standalone or at the end of lines
+  // This regex looks for # followed by word characters, allowing for hyphens, underscores, and spaces in multi-word hashtags
+  const hashtagRegex = /#([a-zA-Z][a-zA-Z0-9\s_-]*?)(?=\s|$|[^a-zA-Z0-9\s_-])/g;
+
+  const hashtags = [];
+  let match;
+
+  while ((match = hashtagRegex.exec(content)) !== null) {
+    const tag = match[1].trim().toLowerCase().replace(/[\s_-]+/g, '-'); // Normalize spaces and underscores to hyphens
+    if (tag.length > 0 && tag.length <= 25) { // Medium tag limit
+      hashtags.push(tag);
+    }
+  }
+
+  return [...new Set(hashtags)]; // Remove duplicates
+}
+
+function processTagsForMedium(explicitTags = [], content) {
+  // Extract hashtags from content
+  const extractedTags = extractHashtagsFromContent(content);
+
+  // Combine explicit tags with extracted tags
+  const allTags = [...explicitTags, ...extractedTags];
+
+  // Normalize tags: lowercase, trim, remove duplicates
+  const normalizedTags = allTags
+    .map(tag => tag.toLowerCase().trim())
+    .filter(tag => tag.length > 0 && tag.length <= 25)
+    .filter((tag, index, arr) => arr.indexOf(tag) === index); // Remove duplicates
+
+  // Medium allows maximum 5 tags
+  const finalTags = normalizedTags.slice(0, 5);
+
+  if (normalizedTags.length > 5) {
+    console.warn(`⚠️ Medium allows maximum 5 tags. Using first 5: ${finalTags.join(', ')}`);
+  }
+
+  return finalTags;
+}
+
+// Test the functionality
+const content = '# This is a test post about #javascript and #web-development. Also covers #react and #typescript.';
+const explicitTags = ['programming', 'coding'];
+
+console.log('Content:', content);
+console.log('Explicit tags:', explicitTags);
+console.log('Extracted hashtags:', extractHashtagsFromContent(content));
+console.log('Processed tags:', processTagsForMedium(explicitTags, content));
+
+// Test edge cases
+console.log('\n--- Edge Cases ---');
+console.log('No hashtags:', processTagsForMedium(['tech'], 'Regular content without hashtags'));
+console.log('Only hashtags:', processTagsForMedium([], '#javascript #react #vue #angular #svelte #nextjs'));
+console.log('Mixed case:', processTagsForMedium(['Tech'], '#JavaScript #react'));
+console.log('Long tags:', processTagsForMedium([], '#this-is-a-very-long-tag-that-exceeds-the-twenty-five-character-limit'));