diff --git a/web/gui2-topo-lib/lib/layer/forcesvg/forcesvg.component.spec.ts b/web/gui2-topo-lib/lib/layer/forcesvg/forcesvg.component.spec.ts
index ce827e7..81fe7ce 100644
--- a/web/gui2-topo-lib/lib/layer/forcesvg/forcesvg.component.spec.ts
+++ b/web/gui2-topo-lib/lib/layer/forcesvg/forcesvg.component.spec.ts
@@ -30,7 +30,7 @@
 import {SubRegionNodeSvgComponent} from './visuals/subregionnodesvg/subregionnodesvg.component';
 import {HostNodeSvgComponent} from './visuals/hostnodesvg/hostnodesvg.component';
 import {LinkSvgComponent} from './visuals/linksvg/linksvg.component';
-import {Device, Host, Link, LinkType, Region} from './models';
+import {Device, Host, Link, LinkType, LinkHighlight, Region} from './models';
 import {ChangeDetectorRef, SimpleChange} from '@angular/core';
 import {TopologyService} from '../../topology.service';
 import {BadgeSvgComponent} from './visuals/badgesvg/badgesvg.component';
@@ -102,6 +102,12 @@
     const odtnSampleData = require('./tests/test-OdtnConfig-topo2CurrentRegion.json');
     const odtnRegionData: Region = <Region><unknown>(odtnSampleData.payload);
 
+    const topo2BaseData = require('./tests/topo2Highlights-base-data.json');
+    const topo2BaseRegionData: Region = <Region><unknown>(topo2BaseData.payload);
+
+    const highlightSampleData = require('./tests/topo2Highlights-sample.json');
+    const linkHightlights: LinkHighlight[] = <LinkHighlight[]><unknown>(highlightSampleData.payload.links);
+
     const emptyRegion: Region = <Region>{devices: [ [], [], [] ], hosts: [ [], [], [] ], links: []};
 
     beforeEach(() => {
@@ -295,4 +301,20 @@
         expect(component.graph.links.length).toBe(6);
 
     });
+
+    it('should handle highlights and match them to existing links', () => {
+        component.regionData = topo2BaseRegionData;
+        component.ngOnChanges(
+            {'regionData' : new SimpleChange(<Region>{}, topo2BaseRegionData, true)});
+
+        expect(component.graph.links.length).toBe(9);
+
+        expect(linkHightlights.length).toBe(6);
+
+        // should be able to find all of the highlighted links in the original data set
+        linkHightlights.forEach((lh: LinkHighlight) => {
+            const foundLink = component.graph.links.find((l: Link) => l.id === Link.linkIdFromShowHighlights(lh.id));
+            expect(foundLink).toBeDefined();
+        });
+    });
 });