fix 'eb --help=rst' when running with Python 3

Author: boegel

easybuild/tools/utilities.py

@@ -258,6 +258,10 @@ def mk_rst_table(titles, columns):
     """
     Returns an rst table with given titles and columns (a nested list of string columns for each column)
     """
+    # take into account that passed values may be iterators produced via 'map'
+    titles = list(titles)
+    columns = list(columns)
+
     title_cnt, col_cnt = len(titles), len(columns)
     if title_cnt != col_cnt:
         msg = "Number of titles/columns should be equal, found %d titles and %d columns" % (title_cnt, col_cnt)

test/framework/options.py

@@ -174,6 +174,26 @@ def test_help_long(self):
         regex = re.compile("default: True; disable with --disable-cleanup-builddir", re.M)
         self.assertTrue(regex.search(outtxt), "Pattern '%s' found in: %s" % (regex.pattern, outtxt))
 
+    def test_help_rst(self):
+        """Test generating --help in RST output format."""
+
+        self.mock_stderr(True)
+        self.mock_stdout(True)
+        self.eb_main(['--help=rst'], raise_error=True)
+        stderr, stdout = self.get_stderr(), self.get_stdout()
+        self.mock_stderr(False)
+        self.mock_stdout(False)
+
+        self.assertFalse(stderr)
+
+        patterns = [
+            r"^Basic options\n-------------",
+            r"^``--fetch``[ ]*Allow downloading sources",
+        ]
+        for pattern in patterns:
+            regex = re.compile(pattern, re.M)
+            self.assertTrue(regex.search(stdout), "Pattern '%s' should be found in: %s" % (regex.pattern, stdout))
+
     def test_no_args(self):
         """Test using no arguments."""