[FIX] mis_builder: handle corner case errors raised by the test suite

Plus, handle even more corner cases related to NameError handling.

mis_builder/models/data_error.py

@@ -9,3 +9,7 @@ class DataError(Exception):
     def __init__(self, name, msg):
         self.name = name
         self.msg = msg
+
+
+class NameDataError(DataError):
+    pass

mis_builder/models/mis_report.py

@@ -20,7 +20,7 @@ from .aep import AccountingExpressionProcessor as AEP
 from .aggregate import _sum, _avg, _min, _max
 from .accounting_none import AccountingNone
 from .simple_array import SimpleArray
-from .mis_safe_eval import mis_safe_eval, DataError
+from .mis_safe_eval import mis_safe_eval, DataError, NameDataError
 from .mis_report_style import (
     TYPE_NUM, TYPE_PCT, TYPE_STR, CMP_DIFF, CMP_PCT, CMP_NONE
 )
@@ -190,8 +190,9 @@ class KpiMatrix(object):
 
         Invoke this and declare_comparison in display order.
         """
-        self._cols[col_key] = KpiMatrixCol(label, description,
-                                           locals_dict, subkpis)
+        col = KpiMatrixCol(label, description, locals_dict, subkpis)
+        self._cols[col_key] = col
+        return col
 
     def declare_comparison(self, col_key, base_col_key):
         """ Declare a new comparison column.
@@ -235,6 +236,7 @@ class KpiMatrix(object):
             if isinstance(val, DataError):
                 val_rendered = val.name
                 val_comment = val.msg
+                val = None
             else:
                 val_rendered = self._style_model.render(
                     self.lang, row.style_props, kpi.type, val)
@@ -915,7 +917,7 @@ class MisReport(models.Model):
                        if subkpi in subkpis_filter]
         else:
             subkpis = self.subkpi_ids
-        kpi_matrix.declare_col(col_key,
+        col = kpi_matrix.declare_col(col_key,
                                      col_label, col_description,
                                      locals_dict, subkpis)
 
@@ -934,11 +936,13 @@ class MisReport(models.Model):
 
                 vals = []
                 drilldown_args = []
-                try:
+                name_error = False
                 for expression in expressions:
                     replaced_expr = aep.replace_expr(expression)
                     vals.append(
                         mis_safe_eval(replaced_expr, locals_dict))
+                    if isinstance(vals[-1], NameDataError):
+                        name_error = True
                     if replaced_expr != expression:
                         drilldown_args.append({
                             'period_id': col_key,
@@ -946,9 +950,8 @@ class MisReport(models.Model):
                         })
                     else:
                         drilldown_args.append(None)
-                except NameError:
+                if name_error:
                     recompute_queue.append(kpi)
-                    break
                 else:
                     # no error, set it in locals_dict so it can be used
                     # in computing other kpis
@@ -957,10 +960,26 @@ class MisReport(models.Model):
                     else:
                         locals_dict[kpi.name] = SimpleArray(vals)
 
+                # even in case of name error we set the result in the matrix
+                # so the name error will be displayed if it cannot be
+                # resolved by recomputing later
+                if len(expressions) == 1 and col.colspan > 1:
+                    if isinstance(vals[0], tuple):
+                        vals = vals[0]
+                        assert len(vals) == col.colspan
+                    elif isinstance(vals[0], NameDataError):
+                        vals = (vals[0],) * col.colspan
+                    else:
+                        raise UserError("Probably not your fault... but I'm "
+                                        "really curious to know how you "
+                                        "managed to raise this error so "
+                                        "I can handle one more corner case!")
+                if len(drilldown_args) != len(vals):
+                    drilldown_args = [None] * len(vals)
                 kpi_matrix.set_values(
                     kpi, col_key, vals, drilldown_args)
 
-                if not kpi.auto_expand_accounts:
+                if not kpi.auto_expand_accounts or name_error:
                     continue
 
                 for account_id, replaced_exprs in \

mis_builder/models/mis_safe_eval.py

@@ -6,7 +6,7 @@ import traceback
 
 from openerp.tools.safe_eval import test_expr, _SAFE_OPCODES, _BUILTINS
 
-from .data_error import DataError
+from .data_error import DataError, NameDataError
 
 
 __all__ = ['mis_safe_eval']
@@ -25,7 +25,7 @@ def mis_safe_eval(expr, locals_dict):
         globals_dict = {'__builtins__': _BUILTINS}
         val = eval(c, globals_dict, locals_dict)  # pylint: disable=eval-used
     except NameError:
-        raise
+        val = NameDataError('#NAME', traceback.format_exc())
     except ZeroDivisionError:
         val = DataError('#DIV/0', traceback.format_exc())
     except:

mis_builder/tests/test_mis_safe_eval.py

@@ -4,7 +4,7 @@
 
 import openerp.tests.common as common
 
-from ..models.mis_safe_eval import mis_safe_eval, DataError
+from ..models.mis_safe_eval import mis_safe_eval, DataError, NameDataError
 
 
 class TestMisSafeEval(common.TransactionCase):
@@ -22,5 +22,6 @@ class TestMisSafeEval(common.TransactionCase):
         self.assertEqual(val.name, '#ERR')
 
     def test_name_error(self):
-        with self.assertRaises(NameError):
-            mis_safe_eval('a + 1', {})
+        val = mis_safe_eval('a + 1', {})
+        self.assertTrue(isinstance(val, NameDataError))
+        self.assertEqual(val.name, '#NAME')