Add test which would have shown regression regarding table.colsep

tests/roots/test-latex-table/complex.rst

@@ -20,6 +20,25 @@ grid table
 | cell5-1                     |
 +---------+---------+---------+
 
+grid table with tabularcolumns having no vline
+----------------------------------------------
+
+.. tabularcolumns:: TTT
+
++---------+---------+---------+
+| header1 | header2 | header3 |
++=========+=========+=========+
+| cell1-1 | cell1-2 | cell1-3 |
++---------+         +---------+
+| cell2-1 |         | cell2-3 |
++         +---------+---------+
+|         | cell3-2-par1      |
++---------+                   |
+| cell4-1 | cell3-2-par2      |
++---------+---------+---------+
+| cell5-1                     |
++---------+---------+---------+
+
 complex spanning cell
 ---------------------
 

tests/test_build_latex.py

@@ -1314,6 +1314,13 @@ def get_expected(name):
     expected = get_expected('gridtable')
     assert actual == expected
 
+    # grid table with tabularcolumns
+    # MEMO: filename should end with tabularcolumns but tabularcolumn has been
+    #       used in existing other cases
+    actual = tables['grid table with tabularcolumns having no vline']
+    expected = get_expected('gridtable_with_tabularcolumn')
+    assert actual == expected
+
     # complex spanning cell
     actual = tables['complex spanning cell']
     expected = get_expected('complex_spanning_cell')