debug: add coverage collection logging to diagnose 0/0 coverage

browser_tests/fixtures/ComfyPage.ts

@@ -420,14 +420,42 @@ export const comfyPageFixture = base.extend<{
     await use(page)
     const entries = await page.coverage.stopJSCoverage()
 
+    // Debug: log coverage entry stats
+    const httpEntries = entries.filter((e) => e.url.startsWith('http'))
+    const withSource = entries.filter(
+      (e) => typeof e.source === 'string'
+    ).length
+    console.log(
+      `[coverage] ${testInfo.title}: ${entries.length} entries, ${httpEntries.length} HTTP, ${withSource} with source`
+    )
+    if (httpEntries.length > 0) {
+      console.log(
+        `[coverage] Sample URLs: ${httpEntries
+          .slice(0, 3)
+          .map((e) => e.url)
+          .join(', ')}`
+      )
+    }
+
+    let fetchedCount = 0
     for (const entry of entries) {
       if (typeof entry.source !== 'string' && entry.url.startsWith('http')) {
         try {
           const resp = await fetch(entry.url)
-          if (resp.ok) (entry as Record<string, unknown>).source = await resp.text()
-        } catch {}
+          if (resp.ok) {
+            ;(entry as Record<string, unknown>).source = await resp.text()
+            fetchedCount++
+          } else {
+            console.log(
+              `[coverage] fetch failed ${entry.url}: ${resp.status}`
+            )
+          }
+        } catch (err) {
+          console.log(`[coverage] fetch error ${entry.url}: ${err}`)
+        }
       }
     }
+    console.log(`[coverage] Fetched sources for ${fetchedCount} scripts`)
 
     const resultFile = testInfo.outputPath('v8-coverage.json')
     await fs.writeFile(resultFile, JSON.stringify({ result: entries }))