Adds a catch for instances to the GSP modal

Where GSP is the group security dashboard

ee/app/assets/javascripts/security_dashboard/store/modules/vulnerabilities/mutations.js

@@ -64,11 +64,17 @@ export default {
     Vue.set(state.modal.data.severity, 'value', vulnerability.severity);
     Vue.set(state.modal.data.confidence, 'value', vulnerability.confidence);
     Vue.set(state.modal.data.solution, 'value', vulnerability.solution);
-    Vue.set(state.modal.data.instances, 'value', vulnerability.instances);
     Vue.set(state.modal, 'vulnerability', vulnerability);
     Vue.set(state.modal.vulnerability, 'hasIssue', Boolean(vulnerability.issue_feedback));
     Vue.set(state.modal.vulnerability, 'isDismissed', Boolean(vulnerability.dismissal_feedback));
     Vue.set(state.modal, 'error', null);
+
+    if (vulnerability.instances && vulnerability.instances.length) {
+      Vue.set(state.modal.data.instances, 'value', vulnerability.instances);
+    } else {
+      Vue.set(state.modal.data.instances, 'value', null);
+    }
+
     if (vulnerability.links && vulnerability.links.length) {
       Vue.set(state.modal.data.links, 'value', vulnerability.links);
     } else {

ee/spec/javascripts/security_dashboard/store/vulnerabilities/data/mock_data_vulnerabilities.json

@@ -47,6 +47,18 @@
         "name": "Cipher does not check for integrity first?",
         "url": "https://crypto.stackexchange.com/questions/31428/pbewithmd5anddes-cipher-does-not-check-for-integrity-first"
       }
+    ],
+    "instances": [
+      {
+        "param": "X-Content-Type-Options",
+        "method": "GET",
+        "uri": "http://bikebilly-spring-auto-devops-review-feature-br-3y2gpb.35.192.176.43.xip.io"
+      },
+      {
+        "param": "X-Content-Type-Options",
+        "method": "GET",
+        "uri": "http://bikebilly-spring-auto-devops-review-feature-br-3y2gpb.35.192.176.43.xip.io/"
+      }
     ]
   },
   {

ee/spec/javascripts/security_dashboard/store/vulnerabilities/mutations_spec.js

@@ -223,6 +223,13 @@ describe('vulnerabilities module mutations', () => {
 
         expect(state.modal.data.links.value).toEqual(null);
       });
+
+      it('should nullify the instances', () => {
+        const payload = { vulnerability: { ...vulnerability, instances: [] } };
+        mutations[types.SET_MODAL_DATA](state, payload);
+
+        expect(state.modal.data.instances.value).toEqual(null);
+      });
     });
   });