Added test case dashboard

devenv/dev-dashboards/panel_tests_gauge.json

@@ -0,0 +1,1250 @@
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+            "index": 1,
+            "value": 75
+          },
+          {
+            "color": "#7EB26D",
+            "index": 0,
+            "value": null
+          }
+        ],
+        "unit": "ms",
+        "valueMappings": []
+      },
+      "repeat": "Servers",
+      "repeatDirection": "h",
+      "scopedVars": {
+        "Servers": {
+          "selected": false,
+          "text": "server1",
+          "value": "server1"
+        }
+      },
+      "targets": [
+        {
+          "refId": "A",
+          "scenarioId": "csv_metric_values",
+          "stringInput": "1,20,90,30,5,0"
+        }
+      ],
+      "timeFrom": null,
+      "timeShift": null,
+      "title": "repeat $Servers",
+      "type": "gauge"
+    },
+    {
+      "datasource": "gdev-testdata",
+      "gridPos": {
+        "h": 8,
+        "w": 6,
+        "x": 6,
+        "y": 19
+      },
+      "id": 22,
+      "links": [],
+      "nullPointMode": "null",
+      "options-gauge": {
+        "baseColor": "#299c46",
+        "decimals": "2",
+        "maxValue": 100,
+        "minValue": 0,
+        "options": {
+          "baseColor": "#299c46",
+          "decimals": 0,
+          "maxValue": 100,
+          "minValue": 0,
+          "prefix": "",
+          "showThresholdLabels": false,
+          "showThresholdMarkers": true,
+          "stat": "avg",
+          "suffix": "",
+          "thresholds": [],
+          "unit": "none",
+          "valueMappings": []
+        },
+        "prefix": "$Servers",
+        "showThresholdLabels": false,
+        "showThresholdMarkers": true,
+        "stat": "avg",
+        "suffix": "",
+        "thresholds": [
+          {
+            "color": "#e24d42",
+            "index": 2,
+            "value": 90
+          },
+          {
+            "color": "#ef843c",
+            "index": 1,
+            "value": 75
+          },
+          {
+            "color": "#7EB26D",
+            "index": 0,
+            "value": null
+          }
+        ],
+        "unit": "ms",
+        "valueMappings": []
+      },
+      "repeat": null,
+      "repeatDirection": "h",
+      "repeatIteration": 1547810606599,
+      "repeatPanelId": 7,
+      "scopedVars": {
+        "Servers": {
+          "selected": false,
+          "text": "server2",
+          "value": "server2"
+        }
+      },
+      "targets": [
+        {
+          "refId": "A",
+          "scenarioId": "csv_metric_values",
+          "stringInput": "1,20,90,30,5,0"
+        }
+      ],
+      "timeFrom": null,
+      "timeShift": null,
+      "title": "repeat $Servers",
+      "type": "gauge"
+    },
+    {
+      "datasource": "gdev-testdata",
+      "gridPos": {
+        "h": 8,
+        "w": 6,
+        "x": 12,
+        "y": 19
+      },
+      "id": 23,
+      "links": [],
+      "nullPointMode": "null",
+      "options-gauge": {
+        "baseColor": "#299c46",
+        "decimals": "2",
+        "maxValue": 100,
+        "minValue": 0,
+        "options": {
+          "baseColor": "#299c46",
+          "decimals": 0,
+          "maxValue": 100,
+          "minValue": 0,
+          "prefix": "",
+          "showThresholdLabels": false,
+          "showThresholdMarkers": true,
+          "stat": "avg",
+          "suffix": "",
+          "thresholds": [],
+          "unit": "none",
+          "valueMappings": []
+        },
+        "prefix": "$Servers",
+        "showThresholdLabels": false,
+        "showThresholdMarkers": true,
+        "stat": "avg",
+        "suffix": "",
+        "thresholds": [
+          {
+            "color": "#e24d42",
+            "index": 2,
+            "value": 90
+          },
+          {
+            "color": "#ef843c",
+            "index": 1,
+            "value": 75
+          },
+          {
+            "color": "#7EB26D",
+            "index": 0,
+            "value": null
+          }
+        ],
+        "unit": "ms",
+        "valueMappings": []
+      },
+      "repeat": null,
+      "repeatDirection": "h",
+      "repeatIteration": 1547810606599,
+      "repeatPanelId": 7,
+      "scopedVars": {
+        "Servers": {
+          "selected": false,
+          "text": "server3",
+          "value": "server3"
+        }
+      },
+      "targets": [
+        {
+          "refId": "A",
+          "scenarioId": "csv_metric_values",
+          "stringInput": "1,20,90,30,5,0"
+        }
+      ],
+      "timeFrom": null,
+      "timeShift": null,
+      "title": "repeat $Servers",
+      "type": "gauge"
+    },
+    {
+      "datasource": "gdev-testdata",
+      "gridPos": {
+        "h": 8,
+        "w": 6,
+        "x": 18,
+        "y": 19
+      },
+      "id": 24,
+      "links": [],
+      "nullPointMode": "null",
+      "options-gauge": {
+        "baseColor": "#299c46",
+        "decimals": "2",
+        "maxValue": 100,
+        "minValue": 0,
+        "options": {
+          "baseColor": "#299c46",
+          "decimals": 0,
+          "maxValue": 100,
+          "minValue": 0,
+          "prefix": "",
+          "showThresholdLabels": false,
+          "showThresholdMarkers": true,
+          "stat": "avg",
+          "suffix": "",
+          "thresholds": [],
+          "unit": "none",
+          "valueMappings": []
+        },
+        "prefix": "$Servers",
+        "showThresholdLabels": false,
+        "showThresholdMarkers": true,
+        "stat": "avg",
+        "suffix": "",
+        "thresholds": [
+          {
+            "color": "#e24d42",
+            "index": 2,
+            "value": 90
+          },
+          {
+            "color": "#ef843c",
+            "index": 1,
+            "value": 75
+          },
+          {
+            "color": "#7EB26D",
+            "index": 0,
+            "value": null
+          }
+        ],
+        "unit": "ms",
+        "valueMappings": []
+      },
+      "repeat": null,
+      "repeatDirection": "h",
+      "repeatIteration": 1547810606599,
+      "repeatPanelId": 7,
+      "scopedVars": {
+        "Servers": {
+          "selected": false,
+          "text": "server4",
+          "value": "server4"
+        }
+      },
+      "targets": [
+        {
+          "refId": "A",
+          "scenarioId": "csv_metric_values",
+          "stringInput": "1,20,90,30,5,0"
+        }
+      ],
+      "timeFrom": null,
+      "timeShift": null,
+      "title": "repeat $Servers",
+      "type": "gauge"
+    }
+  ],
+  "refresh": false,
+  "schemaVersion": 17,
+  "style": "dark",
+  "tags": [
+    "gdev",
+    "panel-tests"
+  ],
+  "templating": {
+    "list": [
+      {
+        "allValue": null,
+        "current": {
+          "selected": true,
+          "tags": [],
+          "text": "All",
+          "value": [
+            "$__all"
+          ]
+        },
+        "hide": 0,
+        "includeAll": true,
+        "label": null,
+        "multi": true,
+        "name": "Servers",
+        "options": [
+          {
+            "selected": true,
+            "text": "All",
+            "value": "$__all"
+          },
+          {
+            "selected": false,
+            "text": "server1",
+            "value": "server1"
+          },
+          {
+            "selected": false,
+            "text": "server2",
+            "value": "server2"
+          },
+          {
+            "selected": false,
+            "text": "server3",
+            "value": "server3"
+          },
+          {
+            "selected": false,
+            "text": "server4",
+            "value": "server4"
+          }
+        ],
+        "query": "server1,server2,server3,server4",
+        "skipUrlSync": false,
+        "type": "custom"
+      }
+    ]
+  },
+  "time": {
+    "from": "now-1h",
+    "to": "now"
+  },
+  "timepicker": {
+    "refresh_intervals": [
+      "5s",
+      "10s",
+      "30s",
+      "1m",
+      "5m",
+      "15m",
+      "30m",
+      "1h",
+      "2h",
+      "1d"
+    ],
+    "time_options": [
+      "5m",
+      "15m",
+      "1h",
+      "6h",
+      "12h",
+      "24h",
+      "2d",
+      "7d",
+      "30d"
+    ]
+  },
+  "timezone": "",
+  "title": "Panel Tests - Gauge",
+  "uid": "_5rDmaQiz",
+  "version": 5
+}

packages/grafana-ui/src/utils/processTimeSeries.ts

@@ -50,8 +50,8 @@ export function processTimeSeries({ timeSeries, nullValueMode }: Options): TimeS
         continue;
       }
 
-      if (typeof currentValue !== 'number') {
-        continue;
+      if (currentValue !== null && typeof currentValue !== 'number') {
+        throw {message: 'Time series contains non number values'};
       }
 
       // Due to missing values we could have different timeStep all along the series

public/app/features/dashboard/panel_model.ts

@@ -52,7 +52,6 @@ const mustKeepProps: { [str: string]: boolean } = {
   hasRefreshed: true,
   events: true,
   cacheTimeout: true,
-  nullPointMode: true,
   cachedPluginOptions: true,
   transparent: true,
 };

public/app/plugins/panel/gauge/GaugePanel.tsx

@@ -24,7 +24,7 @@ export class GaugePanel extends PureComponent<Props> {
 
     const vmSeries = processTimeSeries({
       timeSeries: timeSeries,
-      nullValueMode: NullValueMode.Ignore,
+      nullValueMode: NullValueMode.Null,
     });
 
     return (