fix: [alert] allow decimal for alert threshold value (#17751)

* fix: [alert] add tooltip message for alert threshold value

* support decimal value for alert condition threshold

* add integration test

superset-frontend/src/views/CRUD/alert/AlertReportModal.tsx

@@ -54,6 +54,7 @@ import {
   Operator,
   Recipient,
 } from 'src/views/CRUD/alert/types';
+import { InfoTooltipWithTrigger } from '@superset-ui/chart-controls';
 import { AlertReportCronScheduler } from './components/AlertReportCronScheduler';
 import { NotificationMethod } from './components/NotificationMethod';
 
@@ -1183,7 +1184,12 @@ const AlertReportModal: FunctionComponent<AlertReportModalProps> = ({
                 </StyledInputContainer>
                 <StyledInputContainer>
                   <div className="control-label">
-                    {t('Value')}
+                    {t('Value')}{' '}
+                    <InfoTooltipWithTrigger
+                      tooltip={t(
+                        'Threshold value should be double precision number',
+                      )}
+                    />
                     <span className="required">*</span>
                   </div>
                   <div className="input-container">

superset/reports/schemas.py

@@ -103,7 +103,7 @@ class ValidatorConfigJSONSchema(Schema):
         description=validator_config_json_op_description,
         validate=validate.OneOf(choices=["<", "<=", ">", ">=", "==", "!="]),
     )
-    threshold = fields.Integer()
+    threshold = fields.Float()
 
 
 class ReportRecipientConfigJSONSchema(Schema):

tests/integration_tests/alerts_tests.py

@@ -266,6 +266,9 @@ def test_operator_validator(setup_database):
     # Test passing with result that equals threshold
     assert operator_validator(alert2, '{"op": "==", "threshold": 55}') is True
 
+    # Test passing with result that equals decimal threshold
+    assert operator_validator(alert2, '{"op": ">", "threshold": 54.999}') is True
+
 
 @pytest.mark.parametrize(
     "description, query, validator_type, config",

tests/integration_tests/reports/commands_tests.py

@@ -411,7 +411,16 @@ def create_alert_slack_chart_grace(request):
 
 
 @pytest.fixture(
-    params=["alert1", "alert2", "alert3", "alert4", "alert5", "alert6", "alert7",]
+    params=[
+        "alert1",
+        "alert2",
+        "alert3",
+        "alert4",
+        "alert5",
+        "alert6",
+        "alert7",
+        "alert8",
+    ]
 )
 def create_alert_email_chart(request):
     param_config = {
@@ -450,6 +459,11 @@ def create_alert_email_chart(request):
             "validator_type": ReportScheduleValidatorType.OPERATOR,
             "validator_config_json": '{"op": "!=", "threshold": 11}',
         },
+        "alert8": {
+            "sql": "SELECT 55 as metric",
+            "validator_type": ReportScheduleValidatorType.OPERATOR,
+            "validator_config_json": '{"op": ">", "threshold": 54.999}',
+        },
     }
     with app.app_context():
         chart = db.session.query(Slice).first()