fix: spa parameter and full client-side routing example (#72)

Author: bahmutov

.gitignore

@@ -1,3 +1,4 @@
 node_modules/
 cypress/screenshots
 **/cypress/videos
+build

README.md

@@ -166,10 +166,11 @@ SPAs need catch-all redirect setup to make non-root paths accesssible by tests.
 # local Cypress plugin will test our site after it is built
 package = "netlify-plugin-cypress"
   [plugins.inputs]
+  # can also use "spa = true" to use "index.html" by default
   spa = "index.html"
 ```
 
-See [lws-spa](https://github.com/lwsjs/spa) for more options.
+See [lws-spa](https://github.com/lwsjs/spa) for more options and [tests/routing](tests/routing) example.
 
 ### testing the site before build
 

circle.yml

@@ -75,6 +75,20 @@ jobs:
           working_directory: tests/test-twice
           environment:
             DEBUG: netlify-plugin-cypress
+
+  routing:
+    executor: cypress/base-12-14-0
+    steps:
+      # all dependencies were installed in previous job
+      - attach_workspace:
+          at: ~/
+      - run:
+          name: Netlify Build 🏗
+          command: npm run netlify:build
+          working_directory: tests/routing
+          environment:
+            DEBUG: netlify-plugin-cypress
+
 workflows:
   version: 2
   test_and_release:
@@ -93,13 +107,17 @@ workflows:
       - 'test-twice':
           requires:
             - cypress/install
+      - routing:
+          requires:
+            - cypress/install
       - release:
           requires:
             - build
             - 'basic test'
             - 'recommended test'
             - 'recording test'
             - 'test-twice'
+            - 'routing'
           filters:
             branches:
               only: