allow triggering deprecated behaviour for entire test_build_easyconfi…

…gs_in_parallel_gc3pie + catch deprecation warnings via mocked_stdout_stderr

test/framework/parallelbuild.py

@@ -223,6 +223,8 @@ def test_build_easyconfigs_in_parallel_gc3pie(self):
             print("GC3Pie not available, skipping test")
             return
 
+        self.allow_deprecated_behaviour()
+
         # put GC3Pie config in place to use local host and fork/exec
         resourcedir = os.path.join(self.test_prefix, 'gc3pie')
         gc3pie_cfgfile = os.path.join(self.test_prefix, 'gc3pie_local.ini')
@@ -263,9 +265,8 @@ def test_build_easyconfigs_in_parallel_gc3pie(self):
         test_easyblocks_path = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'sandbox')
         cmd = "PYTHONPATH=%s:%s:$PYTHONPATH eb %%(spec)s -df" % (topdir, test_easyblocks_path)
 
-        self.allow_deprecated_behaviour()
-        build_easyconfigs_in_parallel(cmd, ordered_ecs, prepare_first=False)
-        self.disallow_deprecated_behaviour()
+        with self.mocked_stdout_stderr():
+            build_easyconfigs_in_parallel(cmd, ordered_ecs, prepare_first=False)
 
         toy_modfile = os.path.join(self.test_installpath, 'modules', 'all', 'toy', '0.0')
         if get_module_syntax() == 'Lua':
@@ -282,10 +283,9 @@ def test_build_easyconfigs_in_parallel_gc3pie(self):
         write_file(test_ecfile, ectxt)
         ecs = resolve_dependencies(process_easyconfig(test_ecfile), self.modtool)
 
-        self.allow_deprecated_behaviour()
         error = "1 jobs failed: toy-1.2.3"
-        self.assertErrorRegex(EasyBuildError, error, build_easyconfigs_in_parallel, cmd, ecs, prepare_first=False)
-        self.disallow_deprecated_behaviour()
+        with self.mocked_stdout_stderr():
+            self.assertErrorRegex(EasyBuildError, error, build_easyconfigs_in_parallel, cmd, ecs, prepare_first=False)
 
     def test_submit_jobs(self):
         """Test submit_jobs"""