synthetics - adjust enabled key for browser monitors (#135017)

x-pack/plugins/synthetics/server/synthetics_service/normalizers/browser.ts

@@ -101,7 +101,7 @@ export const normalizeProjectMonitor = ({
     [ConfigKey.ORIGINAL_SPACE]: namespace || defaultFields[ConfigKey.ORIGINAL_SPACE],
     [ConfigKey.CUSTOM_HEARTBEAT_ID]: `${monitor.id}-${projectId}-${namespace}`,
     [ConfigKey.TIMEOUT]: null,
-    [ConfigKey.ENABLED]: monitor.enabled || defaultFields[ConfigKey.ENABLED],
+    [ConfigKey.ENABLED]: monitor.enabled ?? defaultFields[ConfigKey.ENABLED],
   };
   return {
     ...DEFAULT_FIELDS[DataStream.BROWSER],

x-pack/test/api_integration/apis/uptime/rest/add_monitor_project.ts

@@ -629,5 +629,43 @@ export default function ({ getService }: FtrProviderContext) {
         ]);
       }
     });
+
+    it('project monitors - is able to enable and disable monitors', async () => {
+      try {
+        await supertest
+          .put(API_URLS.SYNTHETICS_MONITORS_PROJECT)
+          .set('kbn-xsrf', 'true')
+          .send(projectMonitors);
+
+        await supertest
+          .put(API_URLS.SYNTHETICS_MONITORS_PROJECT)
+          .set('kbn-xsrf', 'true')
+          .send({
+            ...projectMonitors,
+            monitors: [
+              {
+                ...projectMonitors.monitors[0],
+                enabled: false,
+              },
+            ],
+          })
+          .expect(200);
+        const response = await supertest
+          .get(API_URLS.SYNTHETICS_MONITORS)
+          .query({
+            filter: `${syntheticsMonitorType}.attributes.journey_id: ${projectMonitors.monitors[0].id}`,
+          })
+          .set('kbn-xsrf', 'true')
+          .expect(200);
+        const { monitors } = response.body;
+        expect(monitors[0].attributes.enabled).eql(false);
+      } finally {
+        await Promise.all([
+          projectMonitors.monitors.map((monitor) => {
+            return deleteMonitor(monitor.id, projectMonitors.project);
+          }),
+        ]);
+      }
+    });
   });
 }