add e2e connection tests

test/e2e/connection.js

@@ -0,0 +1,55 @@
+const MediaSession = require('../../index.js');
+
+function noop() {}
+
+const types = [{audio: true}, /*{video: true}, {audio: true, video: true}*/];
+types.forEach((type) => {
+    let description;
+    if (type.audio && type.video) {
+        description = 'audio/video';
+    } else if (type.audio) {
+        description = 'audio-only';
+    } else {
+        description = 'video-only';
+    }
+
+    describe.only('establishment of a ', () => {
+        let localStream;
+        beforeEach(() => {
+            return navigator.mediaDevices.getUserMedia(type)
+                .then((stream) => localStream = stream);
+        });
+
+        it(description + ' session', (done) => {
+            const sessionA = new MediaSession({
+                sid: '123',
+                peer: 'some-peer',
+                initiator: true,
+            });
+            const sessionB = new MediaSession({
+                sid: '123',
+                peer: 'some-peer',
+                initiator: false,
+            });
+
+            sessionA.on('send', (data) => {
+                sessionB.process(data.jingle.action, data.jingle, (err) => {
+                    if (data.jingle.action === 'session-initiate' && !err) {
+                        sessionB.accept(noop);
+                    }
+                });
+            });
+            sessionB.on('send', (data) => {
+                sessionA.process(data.jingle.action, data.jingle, noop);
+            });
+            sessionA.on('change:connectionState', (session, state) => {
+                if (state === 'connected') {
+                    done();
+                }
+            });
+
+            sessionA.addStream(localStream);
+            sessionA.start({});
+        });
+    });
+});