diff --git a/test/jasmine/tests/heatmap_test.js b/test/jasmine/tests/heatmap_test.js
index c9a72894da9..1889016a1a6 100644
--- a/test/jasmine/tests/heatmap_test.js
+++ b/test/jasmine/tests/heatmap_test.js
@@ -302,6 +302,18 @@ describe('heatmap calc', function() {
         expect(out.y).toBeCloseToArray([-0.5, 0.5, 1.5]);
         expect(out.z).toBeCloseTo2DArray([[1, 2, 3], [3, 1, 2]]);
     });
+
+    it('should handle the category case', function() {
+        var out = _calc({
+            x: ['a', 'b', 'c'],
+            y: ['z'],
+            z: [[17, 18, 19]]
+        });
+
+        expect(out.x).toBeCloseToArray([-0.5, 0.5, 1.5, 2.5]);
+        expect(out.y).toBeCloseToArray([-0.5, 0.5]);
+        expect(out.z).toBeCloseTo2DArray([[17, 18, 19]]);
+    });
 });
 
 describe('heatmap plot', function() {