bugfix + hardend unit test (Dash-Industry-Forum#4687)

Author: stschr

src/dash/models/DashManifestModel.js

@@ -610,7 +610,7 @@ function DashManifestModel() {
         // repr.legth is always >= 2
         return propertiesOfFirstRepresentation.filter( prop => {
             return repr.slice(1).every( currRep => {
-                return currRep[propertyType].some( e => {
+                return currRep.hasOwnProperty(propertyType) && currRep[propertyType].some( e => {
                     return e.schemeIdUri === prop.schemeIdUri && e.value === prop.value;
                 });
             });

test/unit/test/dash/dash.DashAdapter.js

@@ -152,6 +152,28 @@ const manifest_with_supplemental_properties_on_repr = {
         }]
     }]
 };
+const manifest_with_supplemental_properties_on_not_all_repr = {
+    loadedTime: new Date(),
+    mediaPresentationDuration: 10,
+    Period: [{
+        AdaptationSet: [{
+            id: 0, mimeType: Constants.VIDEO,
+            [DashConstants.REPRESENTATION]: [
+                {
+                    id: 10, bandwidth: 128000,
+                    [DashConstants.SUPPLEMENTAL_PROPERTY]: [
+                        { schemeIdUri: 'test:scheme', value: 'value1' },
+                        { schemeIdUri: 'test:scheme', value: 'value2' },
+                        { schemeIdUri: 'test:scheme', value: 'value3' }
+                    ]
+                },
+                {
+                    id: 11, bandwidth: 160000
+                }
+            ]
+        }]
+    }]
+};
 const manifest_with_essential_properties_on_only_one_repr = {
     loadedTime: new Date(),
     mediaPresentationDuration: 10,
@@ -740,6 +762,22 @@ describe('DashAdapter', function () {
                     expect(mediaInfoArray[0].supplementalProperties[1].value).equals('value2');
                 });
 
+                it('supplemental properties should be filled if set on all representations', function () {
+                    const mediaInfoArray = dashAdapter.getAllMediaInfoForType({
+                        id: 'defaultId_0',
+                        index: 0
+                    }, Constants.VIDEO, manifest_with_supplemental_properties_on_not_all_repr);
+
+                    expect(mediaInfoArray).to.be.instanceOf(Array);
+                    expect(mediaInfoArray.length).equals(1);
+
+                    expect(mediaInfoArray[0].representationCount).equals(2);
+                    expect(mediaInfoArray[0].codec).not.to.be.null;
+
+                    expect(mediaInfoArray[0].supplementalProperties).to.be.instanceOf(Array);
+                    expect(mediaInfoArray[0].supplementalProperties.length).equals(0);
+                });
+
                 it('supplemental properties should not be filled if not set on all representations', function () {
                     const mediaInfoArray = dashAdapter.getAllMediaInfoForType({
                         id: 'defaultId_0',