Merge pull request #4938 from plotly/handle-undefined-args-in-validate

handle undefined args in Plotly.validate

Author: archmoj

src/plot_api/validate.js

@@ -39,6 +39,9 @@ var isArrayOrTypedArray = Lib.isArrayOrTypedArray;
  *      error message (shown in console in logger config argument is enable)
  */
 module.exports = function validate(data, layout) {
+    if(data === undefined) data = [];
+    if(layout === undefined) layout = {};
+
     var schema = PlotSchema.get();
     var errorList = [];
     var gd = {_context: Lib.extendFlat({}, dfltConfig)};

test/jasmine/tests/mock_test.js

@@ -2078,7 +2078,7 @@ describe('@noCI mock validation', function() {
             it('validating mock: "' + name + '"', function() {
                 var out = Plotly.validate(
                     figure.data,
-                    figure.layout || {} // shouldn't Plotly.validate handle undefined layout?
+                    figure.layout
                 );
                 assert(name, out);
             });