Throw animate API errors whne gd is not a plot

Author: rreusser

src/plot_api/plot_api.js

@@ -2486,8 +2486,7 @@ Plotly.animate = function(gd, frameOrGroupNameOrFrameList, animationOpts) {
     gd = getGraphDiv(gd);
 
     if(!Lib.isPlotDiv(gd)) {
-        Lib.warn('This element is not a Plotly plot.', gd);
-        return Promise.reject();
+        throw new Error('This element is not a Plotly plot: ' + gd);
     }
 
     var trans = gd._transitionData;
@@ -2770,8 +2769,7 @@ Plotly.addFrames = function(gd, frameList, indices) {
     gd = getGraphDiv(gd);
 
     if(!Lib.isPlotDiv(gd)) {
-        Lib.warn('This element is not a Plotly plot.', gd);
-        return Promise.reject();
+        throw new Error('This element is not a Plotly plot: ' + gd);
     }
 
     var i, frame, j, idx;
@@ -2780,8 +2778,7 @@ Plotly.addFrames = function(gd, frameList, indices) {
 
 
     if(!Array.isArray(frameList)) {
-        Lib.warn('addFrames failure: frameList must be an Array of frame definitions', frameList);
-        return Promise.reject();
+        throw new Error('addFrames failure: frameList must be an Array of frame definitions' + frameList);
     }
 
     // Create a sorted list of insertions since we run into lots of problems if these
@@ -2859,8 +2856,7 @@ Plotly.deleteFrames = function(gd, frameList) {
     gd = getGraphDiv(gd);
 
     if(!Lib.isPlotDiv(gd)) {
-        Lib.warn('This element is not a Plotly plot.', gd);
-        return Promise.reject();
+        throw new Error('This element is not a Plotly plot: ' + gd);
     }
 
     var i, idx;

test/jasmine/tests/animate_test.js

@@ -94,11 +94,16 @@ describe('Test animate API', function() {
         destroyGraphDiv();
     });
 
-    it('throws an error if the div is not a plot', function(done) {
-        var gd2 = createGraphDiv(gd);
+    it('throws an error if gd is not a graph', function() {
+        var gd2 = document.createElement('div');
+        gd2.id = 'invalidgd';
+        document.body.appendChild(gd2);
 
-        // Then = fail, rejection = success
-        Plotly.animate(gd2).then(fail).catch(done);
+        expect(function() {
+            Plotly.addFrames(gd2, [{}]);
+        }).toThrow(new Error('This element is not a Plotly plot: [object HTMLDivElement]'));
+
+        document.body.removeChild(gd);
     });
 
     runTests(0);