Add some functional CORS tests

If you've got selenium installed (and working), the whole thing can be
automated pretty well; run main.py, wait while some windows pop up (or
use xvfb-run to run things on a virtual display), then check out what
tests were run on which browsers and whether any of them failed. Exit
code is the number of failed tests.

Includes tests against:
- Account
- Containers, with various ACLs/CORS settings
- Objects
- /info
- SLOs
- DLOs
- Symlinks

Include a gate job that runs the tests in firefox.

Areas for future work:

- Install chromium and chromedriver in the gate; tests should
  automatically pick up on the fact that it's available
- Capture the web browser's console logs, too, so we can get
  more info when things go wrong

Change-Id: Ic1d3a062419f1133c6e2f00a598867d567358c9f

3 files changed, 70 insertions, 0 deletions

diff --git a/tools/playbooks/cors/install_selenium.yaml b/tools/playbooks/cors/install_selenium.yaml
new file mode 100644
index 000000000..682c36a87
--- /dev/null
+++ b/tools/playbooks/cors/install_selenium.yaml
@@ -0,0 +1,30 @@
+- hosts: all
+  become: true
+  tasks:
+    - name: install virtual frame buffer
+      yum:
+        name: xorg-x11-server-Xvfb
+        state: present
+    - name: install selenium
+      pip:
+        name: selenium
+        state: present
+    - name: install firefox
+      yum:
+        name: firefox
+        state: present
+    - name: fetch firefox driver
+      get_url:
+        url: https://github.com/mozilla/geckodriver/releases/download/v0.26.0/geckodriver-v0.26.0-linux64.tar.gz
+        dest: /tmp/geckodriver.tar.gz
+    - name: unpack firefox driver
+      unarchive:
+        src: /tmp/geckodriver.tar.gz
+        dest: /usr/local/bin
+        remote_src: true
+    - name: check firefox version
+      command: firefox --version
+    #- name: install chromium
+    #  yum:
+    #    name: chromium-headless
+    #    state: present
diff --git a/tools/playbooks/cors/post.yaml b/tools/playbooks/cors/post.yaml
new file mode 100644
index 000000000..b0e4ba438
--- /dev/null
+++ b/tools/playbooks/cors/post.yaml
@@ -0,0 +1,25 @@
+- hosts: all
+  become: true
+  tasks:
+    - name: Copy geckodriver log from worker nodes to executor node
+      synchronize:
+        src: '{{ ansible_env.HOME }}/geckodriver.log'
+        dest: '{{ zuul.executor.log_root }}'
+        mode: pull
+        copy_links: true
+        verify_host: true
+
+    - name: Copy CORS tests output from worker nodes to executor node
+      synchronize:
+        src: '{{ ansible_env.HOME }}/cors-test-results.txt'
+        dest: '{{ zuul.executor.log_root }}'
+        mode: pull
+        copy_links: true
+        verify_host: true
+
+    - zuul_return:
+        data:
+          zuul:
+            artifacts:
+              - name: CORS test results
+                url: cors-test-results.txt
diff --git a/tools/playbooks/cors/run.yaml b/tools/playbooks/cors/run.yaml
new file mode 100644
index 000000000..a6076f82d
--- /dev/null
+++ b/tools/playbooks/cors/run.yaml
@@ -0,0 +1,15 @@
+- hosts: all
+  tasks:
+    - name: Shutdown main swift services
+      shell: "swift-init stop main"
+      ignore_errors: true
+
+    - name: Start main swift services
+      shell: "swift-init start main"
+
+    - name: Run CORS tests
+      shell: >
+        xvfb-run python
+        {{ ansible_env.HOME }}/{{ zuul.project.src_dir }}/test/cors/main.py
+        --output {{ ansible_env.HOME }}/cors-test-results.txt
+        all