diff --git a/web/ui/react-app/src/pages/graph/GraphHeatmapHelpers.test.ts b/web/ui/react-app/src/pages/graph/GraphHeatmapHelpers.test.ts
new file mode 100644
index 000000000..dfc718587
--- /dev/null
+++ b/web/ui/react-app/src/pages/graph/GraphHeatmapHelpers.test.ts
@@ -0,0 +1,27 @@
+import { isHeatmapData } from './GraphHeatmapHelpers';
+
+describe('GraphHeatmapHelpers', () => {
+  it('isHeatmapData should return false for a vector', () => {
+    const data = {
+      resultType: 'vector',
+      result: [
+        {
+          metric: {
+            __name__: 'my_gauge',
+            job: 'target',
+          },
+          value: [1703091180.683, '6'],
+        },
+      ],
+    };
+    expect(isHeatmapData(data)).toBe(false);
+  });
+
+  it('isHeatmapData should return false for scalar resultType', () => {
+    const data = {
+      resultType: 'scalar',
+      result: [1703091180.125, '1703091180.125'],
+    };
+    expect(isHeatmapData(data)).toBe(false);
+  });
+});