Also check stderr is empty

Author: ocaisa

test/framework/options.py

@@ -1965,28 +1965,28 @@ def test_try_with_copy(self):
             '--copy-ec',
         ]
         self.mock_stdout(True)
-        # self.mock_stderr(True)
+        self.mock_stderr(True)
         copied_ec = os.path.join(self.test_buildpath, 'my_eb.eb')
         self.eb_main(args + [copied_ec], verbose=True, raise_error=True)
         outtxt = self.get_stdout()
-        # errtxt = self.get_stderr()
+        errtxt = self.get_stderr()
         self.assertTrue(r'toy-0.0-tweaked.eb copied to ' + copied_ec in outtxt)
-        # self.assertFalse(errtxt)
+        self.assertFalse(errtxt)
         self.mock_stdout(False)
-        # self.mock_stderr(False)
+        self.mock_stderr(False)
         self.assertTrue(os.path.exists(copied_ec))
 
         self.mock_stdout(True)
-        # self.mock_stderr(True)
+        self.mock_stderr(True)
         tweaked_ecs_dir = os.path.join(self.test_buildpath, 'my_tweaked_ecs')
         self.eb_main(args + ['--try-software=foo,1.2.3', '--try-toolchain=gompi,2018a', tweaked_ecs_dir],
                      verbose=True, raise_error=True)
         outtxt = self.get_stdout()
-        # errtxt = self.get_stderr()
+        errtxt = self.get_stderr()
         self.assertTrue(r'1 file(s) copied to ' + tweaked_ecs_dir in outtxt)
-        # self.assertFalse(errtxt)
+        self.assertFalse(errtxt)
         self.mock_stdout(False)
-        # self.mock_stderr(False)
+        self.mock_stderr(False)
         self.assertTrue(
             os.path.exists(os.path.join(self.test_buildpath, tweaked_ecs_dir, 'foo-1.2.3-GCC-6.4.0-2.28.eb'))
         )