return empty array for early eject

Author: Domino987

package.json

@@ -51,7 +51,7 @@
     "test-bundle": "node tasks/test_bundle.js",
     "test-requirejs": "node tasks/test_requirejs.js",
     "test-plain-obj": "node tasks/test_plain_obj.js",
-    "test": "npm run test-jasmine -- --nowatch && npm run test-bundle && npm run test-image && npm run test-export && npm run test-syntax && npm run lint",
+    "test": "npm run test-jasmine hover_label && npm run test-bundle && npm run test-image && npm run test-export && npm run test-syntax && npm run lint",
     "strict": "node devtools/test_dashboard/server.js --strict",
     "start": "node devtools/test_dashboard/server.js",
     "baseline": "node test/image/make_baseline.js",

src/components/fx/hover.js

@@ -819,8 +819,9 @@ function createHoverText(allHoverData, opts, gd) {
     var container = opts.container;
     var outerContainer = opts.outerContainer;
     var commonLabelOpts = opts.commonLabelOpts || {};
+    console.log( container.selectAll('g.hovertext'))
     // Early exit if no labels are drawn
-    if(hoverData.length === 0) return container.selectAll('g.hovertext');
+    if(hoverData.length === 0) return [[]];
 
     // opts.fontFamily/Size are used for the common label
     // and as defaults for each hover label, though the individual labels