More app-loading tests

1. fix the 'Clean load' tests which had been broken by
https://github.com/matrix-org/matrix-react-sdk/pull/399: make sure we clear
localStorage between tests.

2. Test the session rehydration properly by setting the localStorage rather
than setting up the MatrixClientPeg before loading the app.

3. Add some tests for the auto-guest-registration flows.

test/app-tests/loading.js

@@ -50,6 +50,8 @@ describe('loading:', function () {
         // document.body.appendChild(parentDiv);
 
         windowLocation = null;
+
+        window.localStorage.clear();
     });
 
     afterEach(function() {
@@ -131,8 +133,7 @@ describe('loading:', function () {
             q.delay(1).then(() => {
                 // at this point, we're trying to do a guest registration;
                 // we expect a spinner
-                ReactTestUtils.findRenderedComponentWithType(
-                    matrixChat, sdk.getComponent('elements.Spinner'));
+                assertAtLoadingSpinner(matrixChat);
 
                 httpBackend.when('POST', '/register').check(function(req) {
                     expect(req.queryParams.kind).toEqual('guest');
@@ -153,8 +154,7 @@ describe('loading:', function () {
             q.delay(1).then(() => {
                 // at this point, we're trying to do a guest registration;
                 // we expect a spinner
-                ReactTestUtils.findRenderedComponentWithType(
-                    matrixChat, sdk.getComponent('elements.Spinner'));
+                assertAtLoadingSpinner(matrixChat);
 
                 httpBackend.when('POST', '/register').check(function(req) {
                     expect(req.queryParams.kind).toEqual('guest');
@@ -193,14 +193,10 @@ describe('loading:', function () {
 
     describe("MatrixClient rehydrated from stored credentials:", function() {
         beforeEach(function() {
-            // start with a logged-in client
-            MatrixClientPeg.replaceUsingCreds({
-                homeserverUrl: 'http://localhost',
-                identityServerUrl: 'http://localhost',
-                userId: '@me:localhost',
-                accessToken: 'access_token',
-                guest: false,
-            });
+            localStorage.setItem("mx_hs_url", "http://localhost" );
+            localStorage.setItem("mx_is_url", "http://localhost" );
+            localStorage.setItem("mx_access_token", "access_token");
+            localStorage.setItem("mx_user_id", "@me:localhost");
         });
 
         it('shows a directory by default if we have no joined rooms', function(done) {
@@ -212,8 +208,8 @@ describe('loading:', function () {
 
             q.delay(1).then(() => {
                 // we expect a spinner
-                ReactTestUtils.findRenderedComponentWithType(
-                    matrixChat, sdk.getComponent('elements.Spinner'));
+                assertAtSyncingSpinner(matrixChat);
+
                 return httpBackend.flush();
             }).then(() => {
                 // once the sync completes, we should have a directory
@@ -233,8 +229,8 @@ describe('loading:', function () {
 
             q.delay(1).then(() => {
                 // we expect a spinner
-                ReactTestUtils.findRenderedComponentWithType(
-                    matrixChat, sdk.getComponent('elements.Spinner'));
+                assertAtSyncingSpinner(matrixChat);
+
                 return httpBackend.flush();
             }).then(() => {
                 // once the sync completes, we should have a room view
@@ -246,4 +242,89 @@ describe('loading:', function () {
 
         });
     });
+
+    describe('Guest auto-registration:', function() {
+        it('shows a directory by default', function (done) {
+            let matrixChat = loadApp("");
+
+            q.delay(1).then(() => {
+                // at this point, we're trying to do a guest registration;
+                // we expect a spinner
+                assertAtLoadingSpinner(matrixChat);
+
+                httpBackend.when('POST', '/register').check(function(req) {
+                    expect(req.queryParams.kind).toEqual('guest');
+                }).respond(200, {
+                    user_id: "@guest:localhost",
+                    access_token: "secret_token",
+                });
+
+                return httpBackend.flush();
+            }).then(() => {
+                // now we should have a spinner with a logout link
+                assertAtSyncingSpinner(matrixChat);
+
+                httpBackend.when('GET', '/sync').respond(200, {});
+                return httpBackend.flush();
+            }).then(() => {
+                // once the sync completes, we should have a directory
+                httpBackend.verifyNoOutstandingExpectation();
+                ReactTestUtils.findRenderedComponentWithType(
+                    matrixChat, sdk.getComponent('structures.RoomDirectory'));
+                expect(windowLocation.hash).toEqual("#/directory");
+            }).done(done, done);
+        });
+
+        it('shows a room view if we followed a room link', function(done) {
+            let matrixChat = loadApp("#/room/!room:id");
+            q.delay(10).then(() => {
+                // at this point, we're trying to do a guest registration;
+                // we expect a spinner
+                assertAtLoadingSpinner(matrixChat);
+
+                httpBackend.when('POST', '/register').check(function(req) {
+                    expect(req.queryParams.kind).toEqual('guest');
+                }).respond(200, {
+                    user_id: "@guest:localhost",
+                    access_token: "secret_token",
+                });
+
+                return httpBackend.flush();
+            }).then(() => {
+                // now we should have a spinner with a logout link
+                assertAtSyncingSpinner(matrixChat);
+
+                httpBackend.when('GET', '/sync').respond(200, {});
+                return httpBackend.flush();
+            }).then(() => {
+                // once the sync completes, we should have a room view
+                httpBackend.verifyNoOutstandingExpectation();
+                ReactTestUtils.findRenderedComponentWithType(
+                    matrixChat, sdk.getComponent('structures.RoomView'));
+                expect(windowLocation.hash).toEqual("#/room/!room:id");
+            }).done(done, done);
+        });
+    });
 });
+
+// assert that we are on the loading page
+function assertAtLoadingSpinner(matrixChat) {
+    var domComponent = ReactDOM.findDOMNode(matrixChat);
+    expect(domComponent.className).toEqual("mx_MatrixChat_splash");
+
+    // just the spinner
+    expect(domComponent.children.length).toEqual(1);
+}
+
+// we've got login creds, and are waiting for the sync to finish.
+// the page includes a logout link.
+function assertAtSyncingSpinner(matrixChat) {
+    var domComponent = ReactDOM.findDOMNode(matrixChat);
+    expect(domComponent.className).toEqual("mx_MatrixChat_splash");
+
+    ReactTestUtils.findRenderedComponentWithType(
+        matrixChat, sdk.getComponent('elements.Spinner'));
+    var logoutLink = ReactTestUtils.findRenderedDOMComponentWithTag(
+        matrixChat, 'a');
+    expect(logoutLink.text).toEqual("Logout");
+}