validate: launcher: Split test log file handling in Reporter

Patch 3/5 to move logfile handling out of Reporter and into Test.

validate/launcher/baseclasses.py

@@ -748,10 +748,11 @@ def run_tests(self, cur_test_num, total_num_tests):
         i = cur_test_num
         for test in self.tests:
             sys.stdout.write("[%d / %d] " % (i + 1, total_num_tests))
-            self.reporter.before_test(test)
+            self.reporter.open_logfile(test)
             res = test.run()
             i += 1
             self.reporter.after_test(test)
+            self.reporter.close_logfile()
             if res != Result.PASSED and (self.options.forever or
                                          self.options.fatal_error):
                 return test.result

validate/launcher/reporters.py

@@ -69,7 +69,7 @@ def init_timer(self):
         """Initialize a timer before starting tests."""
         self._start_time = time.time()
 
-    def before_test(self, test):
+    def open_logfile(self, test):
         path = os.path.join(self.options.logsdir,
                             test.classname.replace(".", os.sep))
         mkdir(os.path.dirname(path))
@@ -103,6 +103,8 @@ def after_test(self, test):
             self.results.append(test)
 
         self.add_results(test)
+
+    def close_logfile(self):
         if not self.options.redirect_logs:
             self.out.close()