create e2e test for auth buttons (#1907)

This PR adds a few helpful additions regarding authentication.

Changes:
* e2e tests are now run on test_oauth via a passed config.yaml 
* node dev server correctly handles `/login` and `/logout` endpoints to make developing for auth easier
* Introduced auth e2e tests to check that buttons display and work

client/__tests__/e2e/cellxgeneActions.js

@@ -322,7 +322,7 @@ export async function login() {
 
   await goToPage(appUrlBase);
 
-  await clickOn("auth-button");
+  await clickOn("log-in");
 
   // (thuang): Auth0 form is unstable and unsafe for input until verified
   await waitUntilFormFieldStable('[name="email"]');
@@ -341,16 +341,15 @@ export async function login() {
 }
 
 export async function logout() {
-  await clickOnUntil("menu", async () => {
-    await expect(page).toMatch("Log Out");
-
+  await clickOnUntil("user-info", async () => {
+    await waitByID("log-out");
     await Promise.all([
       page.waitForNavigation({ waitUntil: "networkidle0" }),
-      expect(page).toClick("a", { text: "Log Out" }),
+      clickOn("log-out"),
     ]);
   });
 
-  await expect(page).toMatch("Log In");
+  await waitByID("log-in");
 }
 
 async function waitUntilFormFieldStable(selector) {

client/__tests__/e2e/e2e.test.js

@@ -17,6 +17,7 @@ import {
   goToPage,
   typeInto,
   waitByID,
+  clickOnUntil,
 } from "./puppeteerUtils";
 
 import {
@@ -521,6 +522,17 @@ test("lasso moves after pan", async () => {
   expect(panCount).toBe(initialCount);
 });
 
+describe("auth buttons", () => {
+  test("login then logout", async () => {
+    await goToPage(appUrlBase);
+    await clickOnUntil("log-in", async () => {
+      await page.waitForNavigation({ waitUntil: "networkidle0" });
+      await waitByID("user-info");
+    });
+    await logout();
+  });
+});
+
 const conditionalDescribe =
   process.env.TEST_AUTH_INTEGRATION === "true" ? describe : describe.skip;
 

client/__tests__/e2e/test_config.yaml

@@ -0,0 +1,47 @@
+server:
+  app:
+    force_https: true
+
+    # By default, cellxgene will serve api requests from the same base url as the webpage.
+    # In general api_base_url and web_base_url will not need to be set.
+    # There are two reasons to set these parameters:
+    #  1. Oauth authentication is used; the oauth server will redirect back to the api_base_url after login,
+    #     which then redirects back to the web_base_url.  If the web_base_url is not set, it will default to
+    #     the api_base_url.  If oauth authentication is used, the api_base_url must be set.
+    #     For a local test (where the server runs on "http://localhost:<port>"), then the api_base_url may be
+    #     set to the string "local".
+    #  2. The cellxgene deploymnent is in an environment where the webpage and api have
+    #     different base urls.  In this case both api_base_url and web_base_url must be set.
+    #     It is up to the server admin to ensure that the networking is setup correctly for this environment.
+    api_base_url: http://localhost:5005
+    web_base_url: http://localhost:3000
+
+  authentication:
+    # The authentication types may be "none", "session", "oauth"
+    # none:  No authentication support, features like user_annotations must not be enabled.
+    # session:  A session based userid is automatically generated. (no params needed)
+    # oauth: oauth2 is used for authentication;  parameters are defined in params_oauth.
+    type: test
+
+dataset:
+  app:
+    about_legal_tos: null
+    about_legal_privacy: null
+
+  presentation:
+    max_categories: 1000
+    custom_colors: true
+
+  user_annotations:
+    enable: false
+    type: local_file_csv
+    local_file_csv:
+      directory: null
+      file: null
+    ontology:
+      enable: false
+      obo_location: null
+
+  embeddings:
+    names: []
+    enable_reembedding: false