fix: hide attribute if null

Author: royto

src/entity-helper.ts

@@ -59,11 +59,6 @@ export const extractAttributes = (
     if (item.attributes.hasOwnProperty(c.value)) {
       const attributeValue = item.attributes[c.value];
       if (attributeValue === null) {
-        const attributeName = hass.formatEntityAttributeName ? hass.formatEntityAttributeName(item, c.value) : c.value;
-        p.push({
-          name: c.label ? c.label : attributeName,
-          value: 'null',
-        });
         return p;
       }
       if (typeof attributeValue === 'object' && !Array.isArray(attributeValue)) {

test/history.test.ts

@@ -270,7 +270,7 @@ describe('attributes', () => {
     });
   });
 
-  test('attributes with null', () => {
+  test('attributes with null should be ignored', () => {
     const raw = [
       {
         entity_id: 'sensor.notify_last_redmi_all_attr',
@@ -299,11 +299,8 @@ describe('attributes', () => {
 
     const history = toHistory(raw, hass, configuration);
     history.forEach(h => {
-      expect(h.attributes.length).toBe(2);
-      expect(h.attributes).toEqual([
-        { name: 'Apps', value: 'null' },
-        { name: 'icon', value: 'mdi:message' },
-      ]);
+      expect(h.attributes.length).toBe(1);
+      expect(h.attributes).toEqual([{ name: 'icon', value: 'mdi:message' }]);
     });
   });