add plotly_hover before calling hover in heatmap and contour tests

Author: archmoj

test/jasmine/tests/contour_test.js

@@ -639,13 +639,13 @@ describe('contour hover', function() {
         afterAll(destroyGraphDiv);
 
         it('should not display hover on missing data and hoverongaps is disabled', function() {
-            var pt = _hover(gd, 10, 100)[0];
-
             var hoverData;
             gd.on('plotly_hover', function(data) {
                 hoverData = data;
             });
 
+            var pt = _hover(gd, 10, 100)[0];
+
             expect(hoverData).toEqual(undefined);
             expect(pt).toEqual(undefined);
         });

test/jasmine/tests/heatmap_test.js

@@ -989,13 +989,13 @@ describe('heatmap hover', function() {
         afterAll(destroyGraphDiv);
 
         it('should not display hover on missing data and hoverongaps is disabled', function() {
-            var pt = _hover(gd, 10, 100)[0];
-
             var hoverData;
             gd.on('plotly_hover', function(data) {
                 hoverData = data;
             });
 
+            var pt = _hover(gd, 10, 100)[0];
+
             expect(hoverData).toEqual(undefined);
             expect(pt).toEqual(undefined);
         });