fix for , non presence of consul-version meta (#18464)

* fix for #18406 , non presence of consul-version meta

* removed redundant checks

* updated mock-api to mimic api response for synthetic nodes

* added test to test getDistinctConsulVersions method with synthetic-node case

* updated typo in comments

* added change log

.changelog/18464.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+UI : Nodes list view was breaking for synthetic-nodes. Fix handles non existence of consul-version meta for node.
+```

ui/packages/consul-ui/app/serializers/application.js

@@ -227,7 +227,7 @@ export default class ApplicationSerializer extends Serializer {
     // create a Set and add version with only major.minor : ex-1.24.6 as 1.24
     let versionSet = new Set();
     payload.forEach(function (item) {
-      if (item.Meta && item.Meta['consul-version'] !== '') {
+      if (item.Meta && item.Meta['consul-version']) {
         const split = item.Meta['consul-version'].split('.');
         versionSet.add(split[0] + '.' + split[1]);
       }

ui/packages/consul-ui/mock-api/v1/internal/ui/nodes

@@ -13,6 +13,7 @@
       function(item, i)
       {
         const peerNameString = i === 0 ? '"PeerName": "billing",' : '"PeerName": "",'
+        const isSyntheticNode = env('CONSUL_AGENTLESS_ENABLED') ? fake.helpers.randomize([true, false, false, false]) : false
         return `
           {
             "ID":"${fake.random.uuid()}",
@@ -25,8 +26,10 @@
             },
             "Meta": {
               "consul-network-segment":"",
+              ${isSyntheticNode ? `` : `
               "consul-version": "${env('CONSUL_VERSION') ? fake.helpers.randomize([env('CONSUL_VERSION'),"1.10.4","1.15.2", "1.17.8","1.7.2","1.12.4", "1.17.2","1.0.9","2.0.2"]) : fake.helpers.randomize(["1.10.4","1.15.2", "1.17.8","1.7.2","1.12.4", "1.17.2","1.0.9","2.0.2"])  }",
-              "synthetic-node": ${env('CONSUL_AGENTLESS_ENABLED') ? fake.helpers.randomize([true, false, false, false]) : false}
+              `}
+              "synthetic-node": ${isSyntheticNode}
             },
             "Services":[
                 ${

ui/packages/consul-ui/tests/unit/serializers/application-test.js

@@ -6,6 +6,7 @@
 import { module, test } from 'qunit';
 import { setupTest } from 'ember-qunit';
 import { HEADERS_SYMBOL as META } from 'consul-ui/utils/http/consul';
+import Node from 'consul-ui/models/node';
 
 module('Unit | Serializer | application', function (hooks) {
   setupTest(hooks);
@@ -122,4 +123,94 @@ module('Unit | Serializer | application', function (hooks) {
     assert.deepEqual(actual, expected);
     // assert.ok(adapter.uidForURL.calledTwice);
   });
+  test('normalizeResponse for Node returns the expected meta in response', function (assert) {
+    const store = this.owner.lookup('service:store');
+    const serializer = store.serializerFor('application');
+    serializer.timestamp = () => 1234567890; //mocks actual timestamp
+    serializer.primaryKey = 'primary-key-name';
+    serializer.slugKey = 'Name';
+    serializer.fingerprint = function (primary, slug, foreignValue) {
+      return function (item) {
+        return {
+          ...item,
+          ...{
+            Datacenter: foreignValue,
+            [primary]: item[slug],
+          },
+        };
+      };
+    };
+
+    const payload = [
+      {
+        Node: 'node-0',
+        Meta: { 'consul-version': '1.7.2' },
+        uid: '1234',
+        SyncTime: 1234567890,
+      },
+      {
+        Node: 'node-1',
+        Meta: { 'consul-version': '1.18.0' },
+        uid: '1235',
+        SyncTime: 1234567891,
+      },
+      // synthetic-node without consul-version meta
+      {
+        Node: 'node-2',
+        Meta: { 'synthetic-node': true },
+        uid: '1236',
+        SyncTime: 1234567891,
+      },
+    ];
+
+    const expected = {
+      data: [
+        {
+          attributes: {
+            Node: 'node-0',
+            Meta: { 'consul-version': '1.7.2' },
+            SyncTime: 1234567890,
+            uid: '1234',
+          },
+          id: '1234',
+          relationships: {},
+          type: 'node',
+        },
+        {
+          attributes: {
+            Node: 'node-1',
+            Meta: { 'consul-version': '1.18.0' },
+            SyncTime: 1234567890,
+            uid: '1235',
+          },
+          id: '1235',
+          relationships: {},
+          type: 'node',
+        },
+        {
+          attributes: {
+            Node: 'node-2',
+            Meta: { 'synthetic-node': true },
+            SyncTime: 1234567890,
+            uid: '1236',
+          },
+          id: '1236',
+          relationships: {},
+          type: 'node',
+        },
+      ],
+      included: [],
+      meta: {
+        versions: ['1.18', '1.7'], //expect distinct major versions sorted
+        cacheControl: undefined,
+        cursor: undefined,
+        date: 1234567890,
+        dc: undefined,
+        nspace: undefined,
+        partition: undefined,
+      },
+    };
+    const actual = serializer.normalizeResponse(store, Node, payload, '2', 'query');
+    assert.deepEqual(actual, expected);
+  });
 });