Ensure test failures get fully outputted.

Node's console.log() is non-blocking, so I was seeing test failure output get
cut off since it was happening on process exit. No more!

Cakefile

@@ -195,9 +195,18 @@ runTests = (CoffeeScript) ->
 
   global.arrayEq = (a, b, msg) -> ok arrayEqual(a,b), msg
 
+  # Run every test in the `test` folder, recording failures.
+  files = fs.readdirSync 'test'
+  for file in files when file.match /\.coffee$/i
+    currentFile = filename = path.join 'test', file
+    code = fs.readFileSync filename
+    try
+      CoffeeScript.run code.toString(), {filename}
+    catch error
+      failures.push {filename, error}
+
   # When all the tests have run, collect and print errors.
   # If a stacktrace is available, output the compiled function source.
-  process.on 'exit', ->
   time = ((Date.now() - startTime) / 1000).toFixed(2)
   message = "passed #{passedTests} tests in #{time} seconds#{reset}"
   return log(message, green) unless failures.length
@@ -213,17 +222,10 @@ runTests = (CoffeeScript) ->
     log "  #{error.stack}", red
     log "  #{jsFilename}: line #{line ? 'unknown'}, column #{col ? 'unknown'}", red
     console.log "  #{error.source}" if error.source
-    return
 
-  # Run every test in the `test` folder, recording failures.
-  files = fs.readdirSync 'test'
-  for file in files when file.match /\.coffee$/i
-    currentFile = filename = path.join 'test', file
-    code = fs.readFileSync filename
-    try
-      CoffeeScript.run code.toString(), {filename}
-    catch error
-      failures.push {filename, error}
+  # ensure process waits for console.log to drain before exiting
+  process.stdout.on 'drain', ->
+
   return !failures.length