chore: fix flaky log file tests (#6876)

Author: lukekarrys

tap-snapshots/test/lib/utils/exit-handler.js.test.cjs

@@ -63,4 +63,5 @@ verbose exit 1
 timing npm Completed in {TIME}ms
 verbose code 1
 error  A complete log of this run can be found in: {CWD}/cache/_logs/{DATE}-debug-0.log
+silly logfile done cleaning log files
 `

test/lib/utils/exit-handler.js

@@ -132,6 +132,8 @@ t.test('handles unknown error with logs and debug file', async (t) => {
   const { exitHandler, debugFile, logs } = await mockExitHandler(t)
 
   await exitHandler(err('Unknown error', 'ECODE'))
+  // force logfile cleaning logs to happen since those are purposefully not awaited
+  await new Promise((res) => setTimeout(res, 200))
 
   const fileLogs = await debugFile()
   const fileLines = fileLogs.split('\n')
@@ -141,14 +143,19 @@ t.test('handles unknown error with logs and debug file', async (t) => {
 
   t.equal(process.exitCode, 1)
 
+  let skippedLogs = 0
   logs.forEach((logItem, i) => {
     const logLines = format(i, ...logItem).trim().split(os.EOL)
-    logLines.forEach((line) => {
+    for (const line of logLines) {
+      if (line.includes('logfile') && line.includes('cleaning')) {
+        skippedLogs++
+        continue
+      }
       t.match(fileLogs.trim(), line, 'log appears in debug file')
-    })
+    }
   })
 
-  t.equal(logs.length, parseInt(lastLog) + 1)
+  t.equal(logs.length - skippedLogs, parseInt(lastLog) + 1)
   t.match(logs.error, [
     ['code', 'ECODE'],
     ['ERR SUMMARY', 'Unknown error'],