[12.0][IMP] kpi_dashboard: Allow to use formula

kpi_dashboard/tests/__init__.py

@@ -0,0 +1 @@
+from . import test_formula

kpi_dashboard/tests/test_formula.py

@@ -0,0 +1,31 @@
+# Copyright 2020 Creu Blanca
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo.tests.common import TransactionCase
+
+
+class TestFormula(TransactionCase):
+    def test_computation(self):
+        kpi = self.env["kpi.kpi"].create(
+            {
+                "name": "DEMO KPI",
+                "widget": "number",
+                "computation_method": "code",
+            }
+        )
+        self.assertFalse(kpi.value)
+        kpi.compute()
+        self.assertEqual(kpi.value, {})
+        kpi.code = """
+result = {}
+result['value'] = len(model.search([('id', '=', %s)]))
+result['previous'] = len(model.search([('id', '!=', %s)]))
+        """ % (
+            kpi.id,
+            kpi.id,
+        )
+        kpi.compute()
+        value = kpi.value
+        self.assertTrue(value.get("value"))
+        self.assertEqual(value.get("value"), 1)
+        self.assertEqual(value.get("previous"), kpi.search_count([]) - 1)